1372 Commits

Author SHA1 Message Date
RustDesk
ae6af2de43 Webrtc (#15684)
* feat: add rendezvous WebRTC signaling fields

* feat: route WebRTC ICE on controlled side

* feat: race WebRTC as a direct transport enhancement

* fix: route WebRTC ICE through rendezvous paths

* feat: WebRTC transport racing, DTLS identity binding, and pc-leak fixes

- prefer-P2P racing (race_transports_prefer_webrtc) across punch and RelayResponse; ICE bridge with 400ms candidate resend
- controlled-side answerer and ICE routing; sign local DTLS fingerprint into SignedId, controller verifies the binding fail-closed
- fix pc leaks: close_webrtc() on insecure-decline paths (io_loop, port_forward); compute direct before disarming the offerer guard
- point hbb_common to the WebRTC data-plane commit 9f5a296

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

* fix: preserve WebRTC transport preference

* feat: decouple WebRTC from UDP punch, route controlled signaling over TCP

- the WebRTC offer now rides any punch request; only an offer-less request
  may close and reuse the rendezvous socket for TCP punching
  (request_allows_tcp_punch replaces the udp_port-based invariant), with a
  separate offer-less request racing as the TCP fallback
- WebSocket mode no longer disables WebRTC — ws only tunnels the
  signaling/relay legs while ICE stays the only P2P path there; SOCKS proxy
  still disables it (ICE would bypass the proxy and leak the real IP)
- controlled side: WebRTC-only punch replies and trickled ICE candidates go
  over dedicated TCP connections to the rendezvous server instead of the UDP
  mediator channel, for ws/TCP-only hbbs deployments; drop the now-redundant
  rz_sender plumbing and the 400ms candidate re-send on that leg
- guard is_udp handling against responses to requests that advertised no
  udp_port; skip the IPv6 socket bind under force-relay
- test_udp_uat: drop the STUN port race — the punch port must come from the
  rendezvous server's TestNatResponse observing this socket's mapping, a
  STUN probe from another socket can advertise an unreachable port
- bump hbb_common (webrtc 0.13 MSRV pin rationale + upgrade checklist docs)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* fix: KCP/UDP resilience to ICMP resets; optional KCP congestion control

- treat ICMP-driven UDP socket errors (WSAECONNRESET 10054 on Windows,
  ECONNREFUSED on Linux) as packet loss in punch_udp and the KCP pump
  instead of tearing the session down; KCP retransmits through them and a
  truly dead link is still reaped by the pong/app-level timeouts
- resolve STUN hostnames via tokio::net::lookup_host so DNS never blocks a
  runtime worker; fix the inverted non-IPv4 error message
- add enable-kcp-congestion-control option (default on): switch the turbo
  profile to nc=0 so brief loss on constrained links no longer spirals into
  stalls; sender-side only, no wire negotiation
- pin kcp-sys to the rustdesk-patches branch: upstream main lost the
  RustDesk patches on the EasyTier sync, and this branch also wires
  set_kcp_config_factory into connection setup, making the option effective

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* fix: carry switch_code through WebRTC relay fallbacks after rebase

The rebase onto master (switch-code feature) added an 8th request_relay
parameter; pass the interface's switch code from both WebRTC->relay
fallback paths so a role-swap session survives the fallback. Also drop
a duplicate bindgen 0.72.1 entry the Cargo.lock merge produced.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01ExUfAkYbq8UC9pQCiLy8TQ

* fix: don't let the preferred branch's own relay preempt a direct fallback

race_transports_prefer_webrtc committed any success from its first argument
outright, on the assumption that it is the WebRTC connect. It is not: the call
site passes a whole punch attempt, which internally falls back to request_relay
when its direct transports fail. That relay was therefore committed instantly
while the offer-less fallback's TCP punch was still in flight — inverting the
preference this function exists to enforce, since the is_p2p predicate the
caller already supplies was applied only to the `others` branch.

Apply it to both branches: a direct result from either side still commits
immediately, and a relayed result from either side is held for the window so
the other side can land something direct. Also commit a held connection when
the surviving branch errors, which the previous code only did on the first
branch's failure path.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01ExUfAkYbq8UC9pQCiLy8TQ

* fix: evict the oldest pending ICE candidate, not the newest

Candidates arrive in gathering order — host, then srflx, then relay — so a
full buffer was discarding exactly the ones that traverse NAT while keeping
host ones that only work on a shared LAN. Evict from the front instead.

Also document why the controller's ICE bridge must not reconnect on error, in
contrast to the controlled side's per-candidate retry: its socket address is
the return route itself (mangled into PunchHole.socket_addr, echoed back in
IceCandidate.socket_addr, resolved through tcp_punch), so a reconnect would
arrive from an address no route points at, and the server drops the old entry
when the connection closes. Once it dies both directions are dead, and
abandoning WebRTC is the correct response rather than retrying.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01ExUfAkYbq8UC9pQCiLy8TQ

* fix: bound log volume on sites whose rate a peer or retry loop controls

Debug output goes to the log file, so a site that fires per received message
or per retry lets someone else decide how much a machine writes to disk. The
WebRTC work added the first such sites.

- KCP io loop: absorbing ICMP errors as packet loss made a broken socket write
  ~100 lines a second for the 60s until the pong timeout reaps it. Log by run
  instead: one line when a run starts, one per ~5s while it persists so a stuck
  socket stays visible, and one on recovery with the total.
- punch_udp: the recv error retries every 10ms for up to MAX_TIME, so one line
  per occurrence wrote thousands per punch. Log the first, report the count in
  the timeout message.
- ICE candidate paths (client, mediator): the peer sets the candidate rate and
  the rendezvous route carrying them needs no prior punch, so throttle to one
  line a minute each with the suppressed count.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01ExUfAkYbq8UC9pQCiLy8TQ

* fix: the KCP io throttle reset itself every cycle, so it never throttled

The send and recv arms shared one counter, and an ICMP error on a connected
socket is reported once and then cleared — so the steady state is an
alternation: the send succeeds and clears the counter, the next recv reports
the error and finds the counter at 1, and logs. Every error still wrote a
line, at the ~100/s the previous commit set out to stop, while the
persistent-failure and recovery branches were unreachable.

Use one LogThrottle per direction instead of a hand-rolled counter. That
removes the shared state the bug lived in, drops a third throttling mechanism
in favour of the one already added, and leaves the surrounding `if let Err`
untouched rather than reshaping it into a match.

Also fix test_udp_uat's socket-error arm, the untreated twin of the punch_udp
site: it had no backoff at all, so a persistent error re-armed recv
immediately and spun the loop at CPU speed, one warn line per iteration.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01ExUfAkYbq8UC9pQCiLy8TQ

* bump kcp-sys: 14 review fixes on rustdesk-patches (6e44b93 -> fa51c15)

Picks up the handshake-recovery work plus the review round on top of it:
ABBA deadlock between the endpoint's two DashMaps, graceful-close tail
truncation, mid-stream hole on ikcp_send failure, FIN retransmission for
lost-FIN half-open hangs, SYN-ACK budget burned on dropped packets,
spurious ConnectTimeout after a completed handshake, accept-backlog
overflow stranding conns, aliasing UB in the output callback, and the
log-facade/throttling cleanup (per-packet sites no longer reach the
debug-level file logger, peer-rate warns throttled).

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01ExUfAkYbq8UC9pQCiLy8TQ

* ws: decouple ICE policy from force_relay — full-ICE WebRTC over WebSocket

WebSocket support folds into force_relay because a ws tunnel kills
classic TCP/UDP punching — but that conflated transport necessity with
relay policy, and the WebRTC decisions keyed off the merged flag: a ws
client built no offerer at all without TURN, and only a Relay-only-ICE
one with it. ws deployments could never reach a direct WebRTC
connection, which is exactly the path they are supposed to live on.

Split the flag. LoginConfigHandler now tracks policy_relay (the
force-always-relay option, an explicit relay request — /r ids and
retry-via-relay included — and proxy) separately; force_relay stays
policy_relay || use_ws() and keeps governing the classic paths, so
non-ws behavior is unchanged everywhere:

- the offerer's existence and ICE policy follow policy_relay: under
  pure ws the offer gathers every candidate type and may go direct;
  under relay-by-policy it stays Relay-only ICE, TURN-gated, exactly
  as before;
- the RelayResponse race applies the prefer-P2P window under ws (a
  direct ICE path is worth delaying an already-ready relay for) while
  policy relay keeps first-success semantics;
- the request carries webrtc_all_ice (hbb_common 64b54ab) so the
  controlled side knows the offer is full-ICE: it answers with full ICE
  and no TURN requirement, while offers without the bit keep today's
  relay-only answer path on every version-skew combination.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01ExUfAkYbq8UC9pQCiLy8TQ

* bump kcp-sys: 7 review fixes on rustdesk-patches (fa51c15 -> 023a006)

Reverts the connect/accept/add_conn changes that regressed concurrent
connects (the state_map guard held across add_conn is load-bearing), states
the single-conn contract on KcpEndpoint so shared-endpoint behaviour stops
consuming review effort, pins the two invariants that keep truncated input
from aborting under panic='abort', and fixes three findings from external
review: sendwnd() echoing raw config instead of KCP's effective window (a
non-positive factory value stalled sending forever), the passive closer's
lost final FIN delaying EOF by up to ~20s, and the doubled window
overflowing for extreme factory values.

Lock-only change: cargo update -p kcp-sys also re-picked libloading's
windows-targets between two versions already present in the lock; that was
reverted to keep this commit to the one line it is about. cargo metadata
--locked passes on the result.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* ws: read the all-ICE declaration from the offer envelope, drop the proto field

Companion to hbb_common 68d2729: the full-ICE declaration now lives as
an `ice_policy: "all"` key inside the webrtc:// envelope, so the request
assembly no longer sets webrtc_all_ice and the controlled side asks the
envelope (endpoint_declares_all_ice) instead of a PunchHole field. The
rendezvous server carries the offer opaquely — no forwarding to keep in
sync. Skew behavior is unchanged: an unmarked or unparseable envelope
reads as the old Relay-only semantics.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01ExUfAkYbq8UC9pQCiLy8TQ

* add enable-webrtc option; gate test_ipv6 under forced relay

OPTION_ENABLE_WEBRTC (hbb_common 48c2d4d) follows the udp/ipv6 punch
options end to end: default on against the public server, off against
private ones, same settings UI placement on desktop and mobile, and the
same bool2option local-option handling. Gates:

- controller: should_create_webrtc_offerer checks it first — no pc, no
  STUN/TURN gathering, no offer in the request;
- controlled: unlike the udp/ipv6 legs, which deliberately follow the
  request, answering builds a pc that gathers ICE from this host, so
  the answerer honors this machine's own switch too.

Translations for "Enable WebRTC P2P connection" added to all 50 lang
files next to the IPv6 entry (IPv6 and WebRTC are invariant terms in
the same grammatical slot in every one of them).

Also stop probing v6 reachability (test_ipv6) under any forced relay:
the v6 punch socket is never bound there, so the probe was wasted work
on every ws/proxy/relay connection.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01ExUfAkYbq8UC9pQCiLy8TQ

* kcp: client-side integration tests over real loopback sockets

kcp-sys has been through two review rounds of behavioral fixes; the
client wrapper (kcp_io pumps, connect/accept deadlines, framed-stream
adaptation, guard lifetimes) had no tests pinning what rustdesk actually
relies on. Four now do, each through real 127.0.0.1 UDP sockets and the
BytesCodec framing sessions use:

- handshake + bidirectional framed roundtrip + graceful close: the peer
  observes end-of-stream instead of hanging (guard outlives the framed
  stream so the FIN goes out);
- a writer that queues 50 frames and closes immediately loses none of
  them - the client-side pin for the close-tail-drain semantics;
- socket errors after the peer vanishes are treated as loss: writes keep
  succeeding, nothing tears down (ICMP is advisory on connected UDP);
- the connect deadline holds when nothing answers.

Mutation-checked: dropping inbound forwarding in kcp_io reddens exactly
the three tests that need the pump, and the timeout test alone stays
green.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01ExUfAkYbq8UC9pQCiLy8TQ

* ipc/auth: replace the local throttle with the shared throttled_log!

auth.rs predated hbb_common's LogThrottle and grew its own equivalent:
same shape (last_log_at + suppressed), same 5s interval, plus a helper
and three OnceLock<Mutex<..>> statics. It also counted the other way -
excluding the event being reported - so each of the three sites carried
two near-identical log::warn! arms to avoid printing "suppressed 0".

The shared macro covers all of it: one static per call site declared by
the expansion, and the multiplicity suffix appears only when there is
one, which is what those duplicated arms were for. 102 lines out, 27 in.

Behavior difference, deliberate: a burst now reads "(x47)" - the total
including this line - instead of "(suppressed 46 similar events)". One
number, no arithmetic, and one convention across the codebase.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01ExUfAkYbq8UC9pQCiLy8TQ

* kcp: make the congestion-control profile opt-in, not the default

The branch had flipped KCP to nc=0 (built-in congestion window) for
every session. That is a transport-behavior change for all users made on
reasoning alone, and the reasoning does not decide it: which profile wins
depends on why packets are being lost.

nc=1 - what RustDesk has always shipped - never shrinks the send window,
so on a genuinely congested uplink it deepens the loss it is reacting to.
But nc=0's backoff is blunt: a fast retransmit halves the window while an
RTO sets cwnd = 1 outright (ikcp.c) and recovery slow-starts from one
packet, so on a link with random loss and no congestion - Wi-Fi
interference, a long-haul path - it reads loss as congestion and can
stall an interactive stream for seconds. That failure mode is also the
more visible one to a remote-desktop user.

No benchmark settles this either: a loopback A/B has no bottleneck queue,
hence no congestion to control, and would flatter nc=1 by construction.
Deciding it needs a shaped link or field data.

So keep the profile users already run and let the other one be asked for
("enable-kcp-congestion-control" = "Y"). Flipping the default later is a
one-line change once there is evidence. kcp-sys keeps its own test
covering the nc=0 path.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01ExUfAkYbq8UC9pQCiLy8TQ

* android: define getifaddrs/freeifaddrs for the api-21 sysroot

Turning on hbb_common's "webrtc" feature pulls webrtc-util into the android
link, and its ifaces() -- reached from vnet::Net::new() on every ICE gather --
calls getifaddrs(). bionic exports getifaddrs/freeifaddrs only from API 24,
while flutter/ndk_*.sh builds against --platform 21, so every abi failed to
link on the undefined symbols.

Raising the platform to 24 would have to drag minSdkVersion 22 with it and
turn the link error into a load-time one on Android 5.1/6.0, so define the
two symbols instead, using the RTM_GETLINK + RTM_GETADDR netlink dump bionic
itself uses. The definition also shadows bionic's on API >= 24 rather than
delegating to it, so the path that ships is the path every test device runs.

Checked against synthesised netlink dumps on the host -- link/address parsing,
prefix masks, point-to-point, ipv6 scope ids, malformed and truncated messages
-- under UBSan and byte-exact guard malloc, with a deliberately unsigned
remainder as the negative control.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix three ways ws + WebRTC could not work in practice

Review of #15684 and hbb_common#579. Each of these left the code reading
correct while the feature did not function.

- The RelayResponse race classified P2P with `result.2 == "IPv6"`, but
  that site's futures are only ever the relay ("Relay"/"WebSocket") and
  the WebRTC branch's own "WebRTC" — so the predicate was constantly
  false. When the relay landed first the result was still right (the
  webrtc arm's `others_fut.is_none()` fallback), but when WebRTC
  connected FIRST it was parked as if it were a relay and the relay was
  committed on arrival, discarding a live direct connection. That is the
  LAN case: the better the network, the worse the outcome. Classify by
  what the label means, via is_direct_transport, and test both orderings
  — only the relay-first one was covered.

- handle_peer_info wrote "force-always-relay=Y" into the peer's saved
  config whenever force_relay was set, which now includes the WebSocket
  transport. One ws session therefore turned the peer into a permanent
  relay-by-policy peer, and relay-by-policy means Relay-only ICE, so
  WebRTC could never go direct to it again — the flagship path worked
  exactly once. Persist policy_relay, which is the user's choice; the
  transport is a property of this client, not of the peer.

- The answerer gated on this machine's enable-webrtc option, but that is
  LocalConfig: the UI process writes it and never syncs it over IPC,
  while handle_punch_hole runs in the server process, which on Windows
  resolves LocalConfig under a different profile and reads the
  private-server default of "N". The gate refused to answer in exactly
  the self-hosted deployments the transport exists for. Drop it: the
  answerer follows the request, like the udp/ipv6 legs, and the option
  still gates the feature where it can — an offer only exists because
  some controller had it enabled.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01ExUfAkYbq8UC9pQCiLy8TQ

* webrtc: close without an await point; do not report an unknown path as direct

- close_webrtc is no longer async (hbb_common 88f965f), so the ten call
  sites in port_forward and io_loop - all inside select! arms or futures
  the UI can abandon - can no longer be cancelled mid-teardown, which
  left the pc unclosable and its session entry stranded. Client's own
  spawn_close_webrtc went with it: the runtime-teardown guard it existed
  for now lives in close_detached, so both Drop paths share one
  implementation.

- webrtc_relayed() returns None when no candidate pair is selected or
  the pc closed under a concurrent teardown, and both call sites read
  that as "not relayed", i.e. direct. A TURN-relayed session could
  therefore be shown to the user as peer-to-peer. Claiming a direct path
  needs evidence of one, so an unknown answer now counts as relayed.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01ExUfAkYbq8UC9pQCiLy8TQ

* scrap/benchmark: give the Duration divisor an explicit u32

The webrtc feature pulls time 0.3 into scrap's graph (hbb_common ->
webrtc -> webrtc-dtls -> der-parser -> asn1-rs), and that crate carries
an `impl Div<time::Duration> for std::time::Duration`. Orphan rules
allow it because the RHS is its own type, and trait impls are visible
across the whole dependency graph without a use, so std::time::Duration
now has two Div candidates. `yuv_count as _` casts to a plain inference
variable, which both candidates fit, so it stops resolving:

  error[E0282]: type annotations needed
    --> libs/scrap/examples/benchmark.rs:146:33

Only two of the four sites are reported - rustc emits one E0282 per
function body - so all four are annotated. The already-explicit
`as u32` at the hwcodec site and `start.elapsed() / cnt` are unaffected,
the latter because an integer literal's variable can only unify with an
integral type and rules the time impl out on its own.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* webrtc: judge the race by the resolved path, not the label; bound the ICE queue

Third review round. Two of these are regressions from the previous one.

- The RelayResponse race predicate was `is_direct_transport(result.2)`,
  which answers true for the label "WebRTC" - but WebRTC is only a
  direct path when ICE nominated a non-TURN pair. A TURN-relayed WebRTC
  result therefore committed instantly and cancelled the IPv6 attempt
  racing beside it, which is the same inversion the previous fix removed
  in the other direction. (That fix was also argued from a wrong premise:
  the site does carry an IPv6 future, pushed ~50 lines earlier than the
  relay one.) Each future now resolves whether its path is direct and
  the predicate reads that bool, matching the outer race, and the
  downstream recomputation goes away.

- policy_relay still folded in Config::is_proxy(), and that is what gets
  persisted into the peer's config as force-always-relay - so one
  session through a proxy pinned the peer to relay forever and disabled
  WebRTC for it, exactly the latch the previous round fixed for
  WebSocket. Split out peer_relay: the saved option or an explicit
  request for THIS peer, and the only part written back.

- The controlled side buffered remote ICE candidates in an unbounded
  channel while the controller caps the same buffer at 64, and draining
  one costs a JSON parse plus the ICE agent's lock. Whoever can reach a
  session's route could grow it without limit inside the long-lived
  service process. Bounded, with the overflow logged through the
  existing throttle.

- That route was also removed by key alone when an answerer finished, so
  a punch retry that built a fresh answerer under the same fingerprint
  had its live sender deleted by the previous one's cleanup - after
  which it received no candidates at all. Evict only our own sender, the
  way the session cache already guards the analogous case.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01ExUfAkYbq8UC9pQCiLy8TQ

* webrtc: trim the comments to AGENTS.md length; drop is_direct_transport

386 added comment lines down to 287 across client, mediator, kcp_stream
and common. Same rule as hbb_common 3d64e43: out go past-bug narration,
rejected alternatives, measurements and restatements of the code; the
non-derivable why stays.

is_direct_transport goes with them. Judging the race by a transport
label was replaced by the resolved direct flag, leaving it used only by
its own test — and, having been inserted between the doc comment and
race_transports_prefer_webrtc, it had also taken that function's
contract with it. Removing it reattaches the doc where it belongs.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01ExUfAkYbq8UC9pQCiLy8TQ

* webrtc: fix race edge cases that discard or mislabel a direct connection

Three correctness fixes in the transport race, plus three convention
cleanups.

- race_transports_prefer_webrtc committed a relayed result while a direct
  attempt was still in flight: the others arm returned on
  webrtc_fut.is_none() even with an unfinished direct future, and the
  WebRTC-error arm returned a held relay without checking others_fut. A
  relay is now committed only when nothing direct can still arrive (or
  the window expires); a parked relay is also preferred over composing
  an error when both sides fail. Three regression tests, mutation-checked.

- connect()'s plain select_ok let a TURN-relayed WebRTC win as "first
  success", dropping still-racing UDP/IPv6 direct attempts and reporting
  the relayed pair as direct. It now runs through the same prefer-P2P
  race with each attempt carrying whether its path is direct, and the
  WebRTC future resolves is_relayed() so a TURN win is held behind
  direct attempts, not committed as one.

- The RelayResponse path kept direct == true when a WebRTC win's DTLS
  handshake failed and it fell back to relay, so the relay was reported
  P2P. Clear the flag with the transport switch.

- Trim the OffererGuard doc to the three-line max; move the new
  enable-webrtc localization key to the end of every lang list; the KCP
  option constant moved to hbb_common config::keys (0f663aa).

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01ExUfAkYbq8UC9pQCiLy8TQ

* bump hbb_common: WebRTC peer connections own their I/O runtime

Closing the controlling window left the controlled side waiting out
ICE decay — ~25-30s in the peer's log, its disconnected/failed ladder
running to completion — where TCP delivers a FIN at once. The session
end closed the pc by spawning onto io_loop's own
`#[tokio::main(flavor = "current_thread")]` runtime, which is dropped
the moment io_loop returns, and nothing after that call yields: the
task was never polled even once, so no DTLS close_notify ever left.

Every attempt to fix that on the caller's side failed the same way,
because the mismatch was never about where the close ran: a pc's UDP
sockets register with the reactor, and its ICE/DTLS/SCTP pumps spawn
on the runtime, that is current while it is built — so a pc created
by a session outlives the only runtime that can drive its I/O, and a
close driven anywhere else completes without reaching the wire.

The bump homes them where they can outlive any caller: WebRTCStream
builds on a process-lifetime runtime and every detached close runs
there as its own never-cancelled task. io_loop keeps its plain
close_webrtc() calls and only documents why nothing here may spawn or
await the teardown on the dying session runtime.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016HV43uh1ztv6Wm5qi3Y1ne

* fix: give the UDP NAT test a real window when the TCP clock is faked

The punch request carries udp_port only if the rendezvous server's
TestNatResponse has arrived, and the wait for it was bounded by
rtt / 2 — half the TCP connect time, on the assumption that TCP and
UDP round trips are comparable and the test, started earlier, has
already answered.

A transparent TCP proxy breaks that assumption: a TUN-mode VPN on the
host, or a redirect-mode proxy on the LAN gateway serving every device
behind it, completes the handshake locally in ~3ms while the real UDP
round trip is hundreds of ms. Log-confirmed against 5.161.65.208: ping
341ms, TCP connect 3.7ms, connect to a dead port there "succeeds" just
as fast. The window collapsed to ~1.5ms, udp_port stayed 0 on every
attempt, and UDP punch was never even requested — although UDP itself
passes such gateways untouched.

So use the TCP clock only when it is believable: below a plausible WAN
round trip it says nothing about the UDP path, and a flat ceiling
applies instead. The loop still exits the moment the port arrives, so
a genuinely nearby server pays nothing and only a UDP-dead network
waits out the ceiling — on the udp-carrying round alone, while the
parallel pure-TCP round is unaffected.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016HV43uh1ztv6Wm5qi3Y1ne

* feat: make the TCP punch a user option, with TCP as the backstop

TCP punching was the one direct transport without a switch, while UDP,
IPv6 and WebRTC each had one. Add "Enable TCP hole punching" above the
UDP toggle on both desktop and mobile, default on — including on
self-hosted servers, since unlike the other three (whose default-off
there guards against an hbbs that cannot forward their fields) TCP
punching has always been supported by every server.

Turning all four off would leave no way to punch at all, so TCP runs
regardless in that case. That backstop keys off the switches alone: a
transport that is enabled but fails to materialize — no public v6
address, no NAT port, a failed offerer — is already covered by the
relay fallback for a round that ends up with no usable direct
transport. With the TCP punch off, the fallback request is skipped
too: it exists only to carry that punch, and would otherwise reach
connect() with nothing to try and merely open a second relay.

Known cost, unchanged behavior for the peer: the request carries no
field for this choice, so a peer that receives one with no udp_port and
no offer still punches a TCP hole and listens for a connection the
controller will not make. Representing the transport choice on the
wire needs a proto field and the server forwarding it.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016HV43uh1ztv6Wm5qi3Y1ne

* bump hbb_common: name the punch by every transport it carries

`get_local_endpoint_trickle` became `local_endpoint() -> &str`, which
cannot fail, so both call sites lose an unreachable error arm — the
mediator's closed a pc against a failure that no longer exists.

`punch_type` named one transport, and picked it off `allow_tcp_punch`.
A round carries several at once — a NAT port and a v6 address and an
offer — and since the TCP punch became a switch it can carry none, so
one name had to misreport both: the logs of the round that broke WebRTC
read "#1 UDP punch attempt" while the request also carried the v6
address and the offer that was actually failing, and a round with
nothing to punch with was labelled "WebRTC". List them instead —
"UDP+IPv6+WebRTC" — and call the empty round "Relay", which is what it
can still end as and what `typ` prints for it.

The offer is moved into the request rather than cloned into it; that
was its last use.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019UzcMTdYTEv2QbMHcTSUy3

* bump hbb_common: drop link-local IPv6 from ICE gathering

Also pin webrtc-util to a fork of 0.11.0 carrying a Windows IPv6 enumeration fix.
`ifaces` reads the adapter list's on-wire IPv6 bytes as host-order `[u16; 8]`, so on a
little-endian host every group comes out byte-swapped and unbindable: a peer's real
240e:369:9606:4600:f52a:7a8d:2530:4de0 is enumerated as e24:6903:696:46:2af5:8d7a:3025:e04d,
::1 as ::100 and fe80:: as 80fe::. Each fails to bind with WSAEADDRNOTAVAIL, so ICE gathers
no IPv6 host candidate at all on Windows - where a globally routable address is the one
NAT-free path a CGNAT'd peer has.

Never reported upstream; the unix twin of the same bug was fixed in webrtc-rs#475 (2023).
Fork: rustdesk-org/webrtc, branch rustdesk-patches, tag webrtc-util-0.11.0-win-ipv6.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019UzcMTdYTEv2QbMHcTSUy3

* bump hbb_common: name the family a WebRTC session runs over

`stream_type` reaches the UI as the transport that won the race, and every other transport
already carries the family in that label - the v6 punch reports `IPv6`. WebRTC does not: one
label covers both families, and it is the one path whose real remote address can differ from
the rendezvous-observed one the session is identified by.

Refine it at the hand-off to the UI rather than at the source: five sites in client.rs
compare `typ == "WebRTC"`, so widening the label there would silently move control flow.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019UzcMTdYTEv2QbMHcTSUy3

* bump hbb_common: one STUN list, and drop the dead IPv4 half

`test_ipv6` kept its own hand-written copy of the STUN servers. It now reads
`WebRTCStream::stun_servers()`, so an operator who points OPTION_ICE_SERVERS at their own
server gets it on both paths instead of one.

`test_bind_ipv6` sends nothing - `connect` only makes the kernel pick a route and a source
address - so the whole cost is DNS. It races the lookups rather than betting this host's
IPv6 support on whether the first entry happens to publish a AAAA where the user resolves
from; google's does not, from a Chinese resolver, and it was the entry being bet on.

`stun_ipv4_test`, `STUNS_V4` and `test_nat_ipv4` have had no callers since the punch stopped
taking its port from a second socket, and go.

`get_kcp_cc_enabled` reads the renamed option through `option2bool`, like every other one.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019UzcMTdYTEv2QbMHcTSUy3

* webrtc: take dcsctp's retransmission timings and IPv6-safe MTU

webrtc-sctp ships RFC 4960's RTO.Initial/RTO.Min (3000/1000), TCP's values for
arbitrary public paths. On this workload they set the recovery time outright:
a request/response exchange keeps one chunk in flight, so no later SACK ever
raises miss_indicator to the 3 that arms fast retransmit, and the T3 floor is
the only way back. A single loss during a handshake or a first keyframe
therefore costs whole seconds.

The fork now carries dcsctp's numbers instead - the SCTP implementation Google
wrote to replace usrsctp for Chrome's WebRTC data channels, the same realtime
workload: rto_initial 500, rto_min 400, a 220ms floor under the RTT variance,
and mtu 1191. INITIAL_MTU 1228 plus DTLS/UDP/IPv6 overhead is 1313, past the
1280 minimum, so every full-size chunk fragmented on an IPv6 path.

Both patch entries move to the new branch, which also carries the Windows IPv6
byte-swap fix, so one rev matches the whole webrtc 0.13 stack.

* udp: make the punch prove itself, and keep the listener answering

punch_udp sent a zero-length datagram and called the hole open on whatever
arrived next. The rendezvous NAT test's own leftover replies satisfy that
immediately - connect() does not flush the receive queue - so the retry loop
never ran and success meant nothing. The dead socket then cost KCP its full
timeout to rediscover, which is how a failed punch came to take 18 seconds.

Probes now carry a magic and a 64-bit transaction id, and both ends answer
each other's probes, so returning is a fact: a reply echoing our own id is the
one thing that proves the pair carries traffic both ways. With failure now
distinguishable from 'not yet', the window drops from 20s to 3s.

Two asymmetries fall out of that:

Only the connector stops on its own acknowledgement, because only it has
something to send next. An acknowledgement proves our probe came back, not
that the peer's probe was answered - and after punch_udp returns nothing
answers probes any more, since KCP's io loop drops anything shorter than its
header. A listener that stopped there would go mute while a peer whose own
probe or answer was lost - the normal state of a hole still opening - kept
probing an endpoint that works, until it timed out.

So the listener stops on the peer's first real packet instead, and hands that
packet to KcpStream::accept as its init_packet: its arrival proves the pair as
well as an acknowledgement would, and KCP never retransmits its SYN.

* webrtc: correct the RTT variance floor to dcsctp's scaling

The earlier commit took dcsctp's min_rtt_variance = 220 as a raw floor under
rttvar. dcsctp divides the option by kHeuristicVarianceAdjustment = 8.0 first,
a historical accident it kept because downstream users had measured good
values with it, so the intended floor is 27.5ms of variance contributing 110ms
to RTO. Flooring at 220 contributed 880ms instead, which on a 50ms path left
RTO within 7% of the 1000ms default this change exists to escape.

The fork also now records why T1/T2 share T3's RTO manager here, unlike
dcsctp's separate control timers: RTO_INITIAL is the T3 value for the first
DATA chunk, since no RTT sample exists before the first SACK.

* webrtc: skip the controller's ICE re-send instead of queueing it twice

The controller sends every candidate twice, because the server's hop to a
peer registered over UDP can lose one. The ICE agent that dedups repeats
sits downstream of the answerer's queue, so the answerer paid for both
copies: a slot, a JSON parse, and the ICE agent's lock, once per repeat.

Remember a digest of what was queued and skip the repeat. Recorded only
once queued, so a candidate a full queue refused stays repairable by the
re-send.

The queue's depth is unchanged. A real peer gathers well under it - four
STUN servers, link-local IPv6 filtered, one component - and the drain
empties it as candidates trickle in, so what this removes is the redundant
work, not an overflow.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019aokqJuhjvB3kijXtAg5Ns

* tcp: repeat the punch across the controller's dial window

The single punch leaves before hbbs has told the controller where to dial, so
it is never in flight at the same time as the controller's SYN: it opens our
NAT, meets nothing, and a gateway that answers it with RST takes the mapping
down with it, leaving the listener waiting on a hole that no longer exists.

Punch again while the controller may still be dialing, and race those punches
against the accept. That is two ways in where there was one: the mapping is
rebuilt if a RST took it, and once the controller sits in SYN_SENT one of the
punches meets its SYN and completes as a simultaneous open - which a punch sent
before the controller had been told anything never could. The crossing reaches
the punch rather than the listener because the two sockets share the address
but only the punch matches the four-tuple, which the tests now pin down.

There is no instant to aim at, and no window either. `Client::connect` sizes
the controller's dial only after our PunchHoleSent, from its own rendezvous
time and the direct failures it has recorded for us: CONNECT_TIMEOUT between
two known-asymmetric NATs that never failed, punch_time_used times three or
six otherwise, floored at a second - so a peer that failed once dials for a
second or two from then on, and none of that reaches this side. The repeats
therefore cover our own ceiling instead, CONNECT_TIMEOUT, which is exactly as
long as the accept has always been willing to take a connection through the
hole, and back off across it: dense at the start, where every window begins
and the short ones end, sparse afterwards, which is `punch_udp`'s shape for
the same reason. A window past that ceiling was lost before this change too,
and mostly to the controller's own kernel - Windows gives a SYN up at 21s,
Linux's next re-send after 15s is at 31s; a window short of it costs a few
SYNs to a port already closed.

No punch is cut on a per-attempt timeout; one in flight is bounded only by
the shared deadline plus PUNCH_GRACE. A punch is cancel-safe only while it is
still in SYN_SENT; once the controller's SYN has crossed it the socket is half
way through a handshake, and cutting it there cuts the connection the
controller is opening - whose `connect` has already returned, so that attempt
fails outright, there being no relay fallback after a failed TCP handshake. A
timer cannot tell the two states apart, and none is needed: a gateway that
answers with RST fails the connect at once and the loop punches again, while
one that drops the SYN in silence leaves the socket in SYN_SENT, holding the
mapping open while the kernel re-sends, which any SYN of the controller's then
crosses - a second punch has nothing to add. The deadline decides whether
another punch starts; one in flight runs a grace past it, enough for a
crossing begun just before it to complete. The last sleep is cut at the
deadline rather than run out past it, so the window ends on a punch given
that grace and not on a gap of up to the backoff ceiling: the controller's
window opened after ours, on the PunchHoleSent hbbs relayed, so one as long
as ours is still open through our tail.

Only the accept races the punch, never `accept_connection`: that one does not
return until the session it goes on to run has ended, so racing it would tear a
live session down.

Whichever arrives first is the one connection the request produces. `meta`
carries the control permissions hbbs granted for this one controller, so
serving the loser as well would hand them to a second peer - and nothing about
a connection tells the two apart before `create_tcp_connection` has spoken to
it, least of all its address: a carrier NAT shares one between subscribers,
and a NAT that pools its external addresses may dial us from a different one
than hbbs saw the controller through. So the address is not checked, as
`accept_connection` never checked it; the handshake says who arrived, and what
holds the invariant is that there is no second serve. Those
permissions are a ceiling and not a grant either way: `Connection` gates every
message on `authorized`, and latches the login scope of the first request it
accepts, so a peer that reached the hole still arrives with nothing.

The accept loops rather than taking a single connection, so that a transient
accept error does not spend the window the controller still has to arrive in.

libp2p's DCUtR reaches the same place by having both peers dial at one instant
agreed over the relay. Nothing we send reaches the controller directly, so we
cover its dial window rather than name an instant inside it.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019aokqJuhjvB3kijXtAg5Ns

* hbb_common: bump to the webrtc branch rebased on main

Picks up upstream's session-cache eviction by pc identity (#589, adopted without its
unused insert-path helper), the 90-day log retention, and the wlroots output fixes.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019aokqJuhjvB3kijXtAg5Ns

* webrtc: send over SCTP without a congestion window, as KCP does

The same link that streams over KCP crawls over WebRTC. webrtc-sctp runs
RFC 4960's AIMD: a fast retransmit halves cwnd, a T3 drops it to one MTU, and
slow start only rebuilds it while data is queued behind it. Where the loss is
random rather than congestion - a lossy long-haul link - the rate settles at
the Mathis ceiling MSS/(RTT*sqrt(p)) however idle the link is: about 1.3 Mbps
at 70ms RTT and 1% loss, 0.6 Mbps at 5%, while 1080p wants 2-5 Mbps. KCP's
turbo profile (nc=1) has no congestion window at all.

The fork now carries a switch that bypasses the two places gating sends on
cwnd, and hbb_common turns it on for every peer connection unless
`allow-webrtc-congestion-control` is set - the same opt-in KCP has in
`allow-kcp-congestion-control`, for the reason at `get_kcp_cc_enabled`.
Sender-side only; a browser or an older build on the other end interoperates.

Measured over a simulated link (35ms one-way, random loss both ways, 12 KB
frames at 30fps, 300 frames): at 1% loss the window stretches 9.9s of video to
20.7s with a mean latency of 5.5s; without it the stream stays realtime at a
mean of 113ms. At 3%: 47s and 15s against 10.2s and 290ms.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019aokqJuhjvB3kijXtAg5Ns

* webrtc: take the fork's loss recovery for sending without a congestion window

rustdesk-org/webrtc 825a0a48: without a congestion window a chunk is lost
once three chunks sent after its latest transmission are acked, counted in
send order so retransmitted chunks are covered too, and the fast retransmit
sends every lost chunk at once, as KCP nc=1 does; before, a lost
retransmission waited for T3-rtx. Also fixes the delayed SACK timer never
re-arming, the switch applying to established associations, T3-rtx
resending one chunk when the peer's window is full, and bounds new data to
1 MiB / 1024 chunks in flight like KCP's snd_wnd.

Simulated 35ms one-way, random loss both ways, 30 fps, frames later than
200ms out of 1200: 12 KB at 5% loss 996 -> 55 (KCP 61); 40 KB at 2% loss
1183 -> 20 (KCP 39).

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019aokqJuhjvB3kijXtAg5Ns

* bump hbb_common: decode TURN userinfo, add the webrtc_echo example

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01JXJJGEGdgu26wgCppvUXdZ

* web: show the WebRTC toggle and transport in the web UI

The web client now speaks WebRTC, but the desktop settings page hides
the punch options on web and the remote page opens without the session
tab that carries the transport name. Let the existing "Enable WebRTC P2P
connection" checkbox through on web (the other punch options stay
native-only), and add a Transport row to the quality monitor for WebRTC
sessions only (with "(TURN)" when ICE relayed), on every platform.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01JXJJGEGdgu26wgCppvUXdZ

* bump hbb_common: end the ICE forwarder at gathering complete, drop the closes Drop covers

hbb_common now closes the local-candidate channel when gathering
completes, so the controlled side's forwarder in spawn_webrtc_answerer
ends there, and its signaling connection to hbbs with it, instead of
sitting on a socket hbbs closed at 90s idle for the rest of the session.
It also keeps the reassembly buffer across fragmented frames.

Stream closes the WebRTC peer connection on drop (hbb_common b0b624d),
so the close_webrtc() calls in port_forward and io_loop that sat
immediately before a return or the end of scope did nothing Drop was
not about to do, while the comments beside them still said a bare drop
leaked the pc. Remove both.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019aokqJuhjvB3kijXtAg5Ns

* bump hbb_common: quiet the webrtc-rs warnings that describe the race's normal outcome

Cancelling the transport that lost the race, and trickle checking before it
holds a pair, are what the design does on every session that connects - and
webrtc-rs reports both at warn, 90 lines of a 386-line controlled-side log,
beside connections that succeeded. agent_internal and peer_connection drop to
error; agent_gather keeps warn, since an unreachable STUN server is the one
upstream signal that explains a session which never connected.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01M54JAqUK4RynudFou89hod

* port_forward: restore the `?` the close removal left as a match

Dropping the explicit close_webrtc() from the parse-error arm left a match
that only re-spells `?`; master just reworked this function, so the branch
now leaves port_forward.rs untouched.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019aokqJuhjvB3kijXtAg5Ns

* l10n: the two WebRTC keys were missing from Urdu

Every other lang file on the branch carries them; ur.rs was skipped when
they were added.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019aokqJuhjvB3kijXtAg5Ns

* udp: make the punch deadline absolute, so a talking peer cannot defer it

`select!` rebuilds every arm each iteration, so the relative retry sleep was
restarted by each datagram that arrived before it fired. The peer sets that
rate, and an old-build peer's empty datagrams match no arm and loop without
even the recv-error pause, so MAX_TIME went unchecked and the retransmit was
starved with it. `udp_nat_connect` awaits the punch ahead of the KCP timeout
and nothing above it bounds the phase, so the punch held the direct race open
and the relay fallback out of reach for as long as the peer kept sending.

Absolute instants for both clocks. The new test floods empty datagrams for
four times the deadline: the punch now ends at 3s where it ran the full 12s.

Also note at the symmetric-NAT branch that WebRTC not following the legacy
relay decision there is deliberate, so it is not later "fixed" into agreement.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019aokqJuhjvB3kijXtAg5Ns

* bump webrtc fork: MTU-safe bundles, a reordering window, tail loss within the RTT

rustdesk-org/webrtc cc6633bc, three commits on 825a0a48, all on the path
that sends without a congestion window:

Both bundlers counted a DATA chunk by its payload alone; with the header and
padding counted, bundles of small chunks stay within the MTU, and the fragment
payload rounds down to 1160 so a full chunk does too. A chunk is fast
retransmitted at most five times, KCP's IKCP_FASTACK_LIMIT.

A frame's chunks go out within microseconds of each other, so on a path that
jitters the send-order rule resent every chunk that landed behind three of
its siblings: 2.7x the payload on the wire at 10ms of jitter, and on a link
without the room for that, a queue that fed on itself. A reordering window,
RACK's, makes evidence count only from what was sent a quarter of an srtt
after the chunk once the path is seen to reorder, widening on the duplicate
TSNs the receiver reports. 5 Mbps, 1% loss, 20ms jitter: 600 of 600 frames
at a 98ms mean where 290 arrived at 6.2s.

A chunk lost at the tail of a burst has only T3-rtx, which ran from floors
sized for a 200ms delayed ack and restarted only on the tail's predecessor's
ack: 600ms and more. Every DATA chunk now carries the I bit, the floors are
KCP's shape, and a fast retransmission restarts the timer. One 200-byte
message per frame at 5% loss: 9 of 600 later than 200ms, from 42.

Random loss without jitter is unchanged at every rate and frame size.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019aokqJuhjvB3kijXtAg5Ns

* bump webrtc fork: T3-rtx restarts only for the earliest chunk's fast retransmission

rustdesk-org/webrtc 2b8e55bc. Sending without a congestion window, a fast
retransmission of any chunk restarted T3-rtx, so a chunk past the fast
retransmission cap - left to that timer - never reached it while later
chunks kept being resent, which a lossy stream does every couple of frames.
The timer is the earliest in-flight chunk's, and only its resend restarts
it now. Nothing else changes; the benchmark is unchanged.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019aokqJuhjvB3kijXtAg5Ns

* bump webrtc fork: T3-rtx restart on fast retransmission while shutting down too

rustdesk-org/webrtc 48100bf1. The restart for the earliest chunk's fast
retransmission reached only the Established branch of the write loop; the
shutdown states still carry data in flight and recover it the same way, so a
closing association could still resend everything on a loss its fast
retransmit had already recovered. Both branches share one helper now.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019aokqJuhjvB3kijXtAg5Ns

---------

Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
2026-09-06 00:21:28 +08:00
RustDesk
3fc11c0f81 port forward shared conn (#16062)
* hbb_common: bump to the port-forward-mux proto

Also latches PortForward.multiplex into login_scope_digest, which
destructures PortForward's fields exhaustively by design (a new field
must be latched or deliberately ignored to compile).

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EZ49AbZJYfm8NTp5yDPMab

* port_forward_mux: window accounting and channel frame builders

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EZ49AbZJYfm8NTp5yDPMab

* port_forward_mux: fix RecvWindow counter overflow on long transfers

Replace cumulative accounting (granted/received) with remaining credit
tracking to prevent u32 overflow after 4 GiB of data on a single channel.
Wire behavior is identical, but the fix allows large file transfers
without mid-stream channel closure.

Add regression test for 8 GiB transfer to verify fix.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EZ49AbZJYfm8NTp5yDPMab

* port_forward_mux: credit-windowed relay halves and channel coordinator

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EZ49AbZJYfm8NTp5yDPMab

* server: PortForwardMux channel table and per-channel tasks

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EZ49AbZJYfm8NTp5yDPMab

* server: multiplexed port-forward connections stay in the protobuf loop

Wire PortForwardMux into Connection: take the multiplexed path at login
when the controller sets PortForward.multiplex, route
PortForwardChannel frames to it from on_message, sweep the channel
table's targets after open/close, and clean it up on connection close.

Introduce is_port_forward() (socket-based or multiplexed) and use it
at the four sites that classify the connection, so a multiplexed
connection stays in the message loop, gets TestDelay keepalives, and
reports features.port_forward_mux in PeerInfo. The three sites that
break into the raw pipe loop or gate the keepalive still check
port_forward_socket specifically, since a multiplexed connection must
not take that path.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EZ49AbZJYfm8NTp5yDPMab

* cm: update a port-forward row's targets as tunnel channels come and go

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EZ49AbZJYfm8NTp5yDPMab

* port_forward_mux: controller tunnel with a single-writer stream loop

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EZ49AbZJYfm8NTp5yDPMab

* port_forward_mux: publish Muxed before spawning the tunnel loop

Publishing after spawn let a loop that dies immediately reset the state
first, so the later publish pinned it at Muxed with a dead handle
forever. Also adds a test pinning open-before-data ordering across many
concurrently opened channels, and drops an unused Clone derive.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EZ49AbZJYfm8NTp5yDPMab

* port forward: share one multiplexed tunnel across a window's listeners

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EZ49AbZJYfm8NTp5yDPMab

* port forward: fix round 1 review findings

Drop the mux default-false assignment now that definite-assignment proves
every path that reads it has set it; the enable-port-forward-mux config
commit picks up the missing attribution trailers; the default-on test
pins the enable- prefix itself rather than option2bool's weaker fallback.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EZ49AbZJYfm8NTp5yDPMab

* port_forward_mux: end-to-end tests over a loopback tunnel

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EZ49AbZJYfm8NTp5yDPMab

* port_forward_mux: fix bulk test's premature half-close, pin the half-close limitation

many_channels_echo_concurrently_and_a_bulk_one_does_not_starve_them dropped
its bulk write half as soon as writing finished, which shuts down the write
side of the socket and, by design (see the design doc's TCP half-close
non-goal; today's run_forward does the same), ends the whole channel. Keep
the write half alive until the reader is done so the test measures
starvation, not half-close. Add a_local_half_close_ends_the_whole_channel to
pin that limitation in code.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EZ49AbZJYfm8NTp5yDPMab

* port_forward_mux: cap send credit and other final review fixes

Fix 1 (critical): clamp SendCredit to MAX_SEND_CREDIT (= CHANNEL_WINDOW)
in both new() and add(), so a peer with tunnel permission can no longer
advertise an unbounded window and force the controlled side's unbounded
FrameSink::Direct sink to buffer unlimited target data per channel.

Fix 2: rename the "starve" test to many_channels_echo_concurrently and
drop its (untrue) starvation claim, since it opens every channel before
the bulk transfer starts. Add a_channel_opened_during_a_bulk_transfer_
is_served_promptly, which opens the small channel while the bulk one is
demonstrably mid-flight.

Fix 3: only look up the tunnel permission for `open` frames in the
PortForwardChannel arm of on_message, instead of once per data frame.

Fix 4: two rustfmt deviations in connection.rs (matches! wrapping and a
tuple literal), fixed by hand without a blanket cargo fmt run.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EZ49AbZJYfm8NTp5yDPMab

* port_forward_mux: report a refused channel's reason as an error dialog

The controlled side already answers a refused port-forward channel with
opened { success: false, message }; on the multiplexed path TunnelHandle::
on_frame only logged that message at debug and closed the channel, so the
user saw a closed connection with no explanation, worst on the RDP path
where only the RDP client's own error remained. on_frame now returns the
message the window should show, deduplicated per distinct reason (capped
at MAX_REPORTED_OPEN_ERRORS) so one page load's dozen refused connections
surface one dialog per reason instead of a dozen.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EZ49AbZJYfm8NTp5yDPMab

* Use on_error for refused-channel dialog in tunnel_loop

Redirect the refused-channel error through the standard on_error path
instead of calling msgbox directly, for consistency with other errors
in the port-forward flow.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EZ49AbZJYfm8NTp5yDPMab

* port forward: apply the whole-branch review

Correctness:
- listen(): the Legacy arm is merged with the Claimed arm. On its own it
  ignored outcome.local_eof, so a client that hung up during login still
  got a target connect, an audit record and a CM row on the controlled
  side, and ignored outcome.mux, so a peer upgraded while a legacy window
  stayed open answered as a tunnel while the controller went raw.
- Refusal dialogs are deduplicated per quiet spell (10 s) rather than per
  tunnel lifetime; the lifetime set went silent for the rest of a
  long-lived window after the first burst.
- Android's CM listener handles UpdatePortForward; it fell into `_ => {}`.
- relay_socket_to_tunnel reads into one scratch buffer per channel and
  sends an exact-size copy. A frame owning its 64 KiB read allocation
  pinned it until sent, once per byte on interactive traffic.

Consistency and cleanups:
- The controlled side's refusal text is the raw pipe's wording, RDP
  substitution included.
- connection.rs: the PortForwardChannel arm is a one-line hook, the CM
  label is pushed from the 1 s tick alone, and the unreachable inner.tx
  fall-through is gone.
- The Ready enum is removed; wait_ready() returns Option<Claim>.
- SendCredit::add wakes with notify_one alone.
- on_ui_command() replaces the two ui_receiver handlers in listen().
- TunnelHandle is no longer re-exported (unused-import warning).

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EZ49AbZJYfm8NTp5yDPMab

* port forward: a legacy window stays legacy until it is reopened

Review: the merged `Claimed | Legacy` arm gave a legacy window a hot
transition to a tunnel — every accept re-negotiated, and a peer upgraded
while the window stayed open was promoted underneath live connections.
The product does not need a mode switch inside a window's lifetime, and
the transition was extra state-machine surface for nothing: reopening
the window picks up an upgraded peer.

The two arms are separate again. `Claimed` negotiates once and the
peer's answer fixes the window's mode. `Legacy` logs in for every accept
as before, asks for no tunnel — `LoginConfigHandler::port_forward_mux`
carries the request per login, so the raw pipe never has to talk to a
peer that thinks it agreed to multiplex — and ignores what the peer
reports. Both arms keep skipping a local socket that hung up during
login.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EZ49AbZJYfm8NTp5yDPMab

* hbb_common: bump to main with rustdesk/hbb_common#594 merged

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EZ49AbZJYfm8NTp5yDPMab

* server: admit only INITIAL_WINDOW on a channel before opened

The demultiplexer accepted CHANNEL_WINDOW into a pending channel's
unbounded queue, four times the bound the channel task enforces once
it polls. The window now starts at INITIAL_WINDOW and is widened right
before `opened` advertises the rest.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EZ49AbZJYfm8NTp5yDPMab

* port_forward_mux: a tunnel ends when its window drops the Tunnel

The loop held its own handle and state sender, so once the window
closed nothing was left to stop it: it kept answering TestDelay and the
peer connection, CM row included, lived on until the peer went away.
`Tunnel` now owns a watch sender nobody sends on; the loop's receiver
errors when the last `Tunnel` drops, and the loop ends.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EZ49AbZJYfm8NTp5yDPMab

* port forward: one tunnel per mapping, bound to the authenticated target

The login latches `PortForward.host`/`port` into the session scope and
approval is shown that target, but a window-wide tunnel let any later
`open` name another target with only `enable-tunnel` rechecked. A
tunnel now belongs to one listener and serves the one target its login
authenticated: the controlled side refuses an `open` for any other
target, and a window with several targets uses one connection each,
approved on its own.

With one owner per tunnel the claim needs no waiters: `Establishing`,
`Claim::Wait` and `wait_ready` go, and `try_claim` becomes a plain
read. The CM label that followed a tunnel's targets goes with them; a
row shows its mapping's target, as before.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EZ49AbZJYfm8NTp5yDPMab

* port forward: the legacy comment names the mapping, not the window

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EZ49AbZJYfm8NTp5yDPMab

* port_forward_mux: a window violation drops the channel on the spot

Both demultiplexers only queued a `Violation` and left the entry until
the channel task woke and exited, so a peer that kept sending past the
window queued one more entry per frame in the meantime, bounded by
nothing. The entry now goes the moment `accept` fails; later frames for
that id are unknown-channel noise.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EZ49AbZJYfm8NTp5yDPMab

* port forward: the login's target travels with the accept, not the handler

`listen()` wrote `lc.port_forward` (and, on this branch, `port_forward_mux`)
into the window's shared `LoginConfigHandler` before connecting, and
`create_login_msg` read them back only when the peer's `Hash` arrived.
Two mappings logging in at the same time could therefore swap targets:
on master that bridged a local socket to the wrong target, and with a
tunnel bound to its login's target it also left the mapping refusing
every later accept until it was recreated.

The target is now a `PortForward` carried by the interface clone that
handles one accept, passed explicitly down to `create_login_msg`; the
handler no longer has a field to race on. No lock spans the login.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EZ49AbZJYfm8NTp5yDPMab

* port_forward_mux: pin permission revocation and whole-tunnel failure in tests

Both already hold; the review asked for them to be stated. `enable-tunnel`
turned off mid-session refuses the next `open` while the live channel
keeps relaying, and a dead tunnel ends every channel on it together,
after which the next accept establishes again on the same `Tunnel`.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EZ49AbZJYfm8NTp5yDPMab

* port forward: the legacy comment names re-adding the mapping only

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EZ49AbZJYfm8NTp5yDPMab

* port forward: the raw pipe runs the code it always ran

The multiplexed login had replaced `connect_and_login`, so a mapping
with the setting off, a peer without the feature, or a listener latched
`Legacy` still went through the tunnel's state machine, the capped
pre-read and the changed local-EOF rule. Feature off now means the old
code: `listen()` keeps its accept arm and `connect_and_login` as they
were, and the tunnel is a branch taken only when the setting is on, in
`establish_tunnel` with its own `connect_and_login_mux`. The one line
the raw path does differently is the target riding with the accept's
interface clone instead of the shared handler.

`get_port_forward_mux_enabled` had one caller and moves in here, so
`common.rs` is untouched.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EZ49AbZJYfm8NTp5yDPMab

* port forward: a UI login answers the challenge its own connection was given

`handle_login_from_ui` hashed the typed password against `lc.hash`, the
window's shared handler field, and the window's password prompt is
broadcast to every listener. With two mappings both waiting on that
prompt, the `Hash` that arrived last had overwritten the other's, so
one of the two answered the wrong challenge and failed to log in.
Master shares the same state and broadcasts the same way.

The `Hash` is now a parameter of the login; `Session` keeps it beside
the connection it belongs to, and the per-accept clone that
`with_port_forward` makes gets a slot of its own. `lc.hash` stays for
`handle_peer_info`, which only needs the salt, and that is per peer.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EZ49AbZJYfm8NTp5yDPMab

* port forward: a mapping without its hash waits for it before answering the prompt

The window's password prompt is broadcast to every mapping, and can
reach one whose own connection has not received its `Hash` yet. That
mapping used to answer anyway, with a digest over an empty challenge:
the peer refused it and counted a failed attempt, and the empty-salt
result was written into the shared `lc.password`, where the mapping that
prompted had just stored the right one and the next `handle_peer_info`
would persist whatever was there.

The connection's challenge is now `Option<Hash>`, `None` until
`handle_hash` runs, and `handle_login_from_ui` sends nothing without it.
The mapping that prompted stores the salted password in the shared
handler, and the waiting one logs in with that against its own challenge
when its `Hash` arrives, without prompting again.

Test: A answers its prompt, the same broadcast reaches B before its
hash, B sends nothing, B's hash arrives and its login carries B's
challenge and B's target with no dialog. It runs the real `handle_hash`
for B.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EZ49AbZJYfm8NTp5yDPMab

* port forward: the tunnel's login is the raw pipe's, asked for by a window flag

Master's fix for the shared login slots (#16069) keeps the target and
the challenge in the window's `LoginConfigHandler` and serializes the
mappings' logins with a turn lock, all inside `port_forward.rs`. This
branch had carried a broader shape of the same fix, a `with_port_forward`
on `Interface` and the target and `Hash` as parameters through the login
functions, which every caller had to follow. That is gone: `Interface`,
`Session`, `create_login_msg`, `send_login`, `handle_hash` and
`handle_login_from_ui` are as on master.

What the tunnel needs on top is one bit in the login, `multiplex`. It is
a window flag beside `port_forward` in the handler, set once in `io_loop`
before the window's mappings start, so an accept's claim and its login
read the same value; the setting takes effect for windows opened after
it changes. `connect_and_login_mux` is now master's `connect_and_login`
with the tunnel's three differences and the same `hash_arrived` and
`login_from_ui` calls. The raw pipe is master's, line for line.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EZ49AbZJYfm8NTp5yDPMab

* hbb_common: bump to main with rustdesk/hbb_common#595 merged

840c8ec..f94e3fe is that one merge: the five local settings custom
clients could not preset.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EZ49AbZJYfm8NTp5yDPMab

* port forward: the off switch gets a checkbox in Settings → General

`enable-port-forward-mux` was readable only by editing the config file.
It is a local setting of the controlling side, so it sits with the other
outgoing ones, after "Open connection in new tab", with a tooltip saying
what it does.

The two new keys are translated in every language. The three that the
mobile file manager added, "Export", "Export Logs" and "Import Folder",
were empty everywhere but five languages; they are filled in too, and
Korean's "xdp-portal-unavailable" with them.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EZ49AbZJYfm8NTp5yDPMab

* Urdu: fill the backlog of empty and missing translations

ur.rs had fallen behind: 104 keys carried an empty value and 35 keys the
other languages have were absent altogether. Both are filled in, the
missing ones in the order template.rs lists them.

Eight entries stay empty on purpose. They are keys that only ur.rs still
carries, absent from template.rs and from every other language, so their
English source cannot be recovered and nothing reads them:
remember_account_tip, os_account_desk_tip, another_user_login_*_tip,
xorg_not_found_*_tip and no_desktop_*_tip. Twelve more dead keys keep
the values they have; removing either group is a separate decision.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EZ49AbZJYfm8NTp5yDPMab

* Urdu: drop the keys template.rs no longer lists

The twenty keys removed here are absent from template.rs and from every
other language file; ur.rs was the only one still carrying them, eight
of them with no value at all. They are leftovers of features that are
gone: the plugin menu, the OS-account login prompts, the Xorg and
no-desktop errors.

ur.rs now holds exactly the template's key set, all of it translated.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EZ49AbZJYfm8NTp5yDPMab

* port forward: closing the tunnel reaches channels parked on their socket

A channel whose far end neither reads nor writes has both relays parked
on the socket, not on the inbound queue, so `close_all` dropping the
queue's sender woke neither: the socket and both tasks lived on until
the far end hung up. Both sides now hold a per-tunnel teardown signal
that `run_channel` selects on beside its own cancel, and `close_all`
sends it after clearing the map.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EZ49AbZJYfm8NTp5yDPMab

* port forward: a mapping latched to the raw pipe logs in without asking for the tunnel

The login copied the window's `port_forward_mux` into `multiplex`, so a
mapping that had latched to the raw pipe on an old peer kept asking for
the tunnel. Once that peer was upgraded it answered with a tunnel while
the controller switched to raw framing, and every later connection on
the mapping was dead until it was re-added. The login now carries its
own `port_forward_multiplex`, filled with the target under the turn
lock: the probe asks, the raw pipe does not.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EZ49AbZJYfm8NTp5yDPMab

* port forward: a channel opened as its tunnel closes still gets the teardown

`open` can straddle `close_all`: the claim passed, the frame receiver was
still alive, and the channel subscribed after the signal had gone out.
`watch::subscribe` marks earlier sends as seen, and the entry sits in a
map that was already cleared, so nothing would ever end it. The signal is
now a level: `close_all` raises it with `send_replace`, which stores even
with no channel live, and `run_channel` waits for the value rather than
for a change.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EZ49AbZJYfm8NTp5yDPMab

* port forward: the connect guard counts a live tunnel as connected

`connect_port_forward_if_needed` returned early only for a raw-pipe
socket; called again with a tunnel up it would have built a second
`PortForwardMux` and dropped every channel of the first. Not reachable
today, since the logon response is sent once, but the other checks in
this change already read `is_port_forward()`.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EZ49AbZJYfm8NTp5yDPMab

* Urdu: the two terminal clipboard keys master added

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EZ49AbZJYfm8NTp5yDPMab

* port forward: a tunnel's TCP stream refuses packets over twice MAX_FRAME

The codec takes a header declaring up to 1 GiB and hands the packet up
only once it has all arrived, so the channel window bounded what the
peer may send, not what this side buffers. Both sides now cap the codec
at 2 * MAX_FRAME as soon as multiplexing is agreed: a data frame with
its envelope and MAC fits with room to spare, and a header over the cap
ends the tunnel before a byte of payload is read. TCP only; the
WebSocket and WebRTC codecs carry caps of their own.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EZ49AbZJYfm8NTp5yDPMab

* port forward: a channel id still live when the counter comes round is skipped

The controller handed out `next_id` unchecked. 2^32 opens later it lands
on a channel still up: the entry here was replaced, while the peer,
which ignores an `open` for a live id, kept routing that id to the old
socket, so the new local connection's bytes went into the old target
connection. The id is now taken under the map's lock and advanced past
any id in use.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EZ49AbZJYfm8NTp5yDPMab

---------

Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
2026-09-05 14:59:51 +08:00
fufesou
618bf37deb feat(terminal): add opt-in OSC 52 clipboard writes (#16072)
* feat(terminal): add opt-in OSC 52 clipboard writes

* Remove dup tr

Signed-off-by: fufesou <linlong1266@gmail.com>

---------

Signed-off-by: fufesou <linlong1266@gmail.com>
2026-09-05 13:21:49 +08:00
RustDesk
c1a587cfa4 connection page: the Connect menu offers TCP tunneling, as the peer card does (#16075)
The dropdown beside Connect listed file transfer, camera and terminal
but not port forwarding, so reaching it meant having a card for the
peer. `connect` already takes `isTcpTunneling`; only the menu entry and
the parameter that carries it were missing.

Shown on desktop only. The peer card gates the same entry on `isDesktop`
because `connect` routes a tunnel through the desktop path alone; on web
it would have opened a plain remote session instead.


Claude-Session: https://claude.ai/code/session_01EZ49AbZJYfm8NTp5yDPMab

Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
2026-09-05 01:28:27 +08:00
palmoni5
f28ac38ccf feat: optionally sync clipboard between connected sessions (#15934)
* feat(clipboard): optionally sync clipboard between connected sessions

Clipboard content received from a remote session is written to the local
clipboard with an owner marker, so the client clipboard loop deliberately
skips re-broadcasting it to avoid echo loops. As a result, text copied in
one remote window could not be pasted in another connected remote window.

Add an opt-in local option (allow-sync-clipboard-between-sessions) that
relays Clipboard/MultiClipboards messages received from one session to
all other connected sessions, excluding the source session. Per-session
clipboard permissions and view-only mode are still respected via the
existing send path, and the owner marker on the receiving peers prevents
any echo back.

Desktop (flutter) only; file clipboard is not affected.

* fix(lang): propagate sync-clipboard-between-sessions-tip to all locale files

Add the new key to template.rs and every locale file per the localization
convention, move the en.rs entry to the end of the list, and drop comments
that only restated the names next to them.

* fix(lang): add the 'Sync clipboard between sessions' label to the localization catalog

The checkbox label goes through translate(), so add it to template.rs
and every locale file so non-English locales can translate it. en.rs is
skipped since the English display text is identical to the key.

* fix(clipboard): check the source session's full clipboard permission before relaying

The relay was gated only by the incoming clipboard_allowed check
(!disable_clipboard && !view_only). Gate it with
is_text_clipboard_required() instead, which additionally respects the
source session's server_clipboard_enabled and server_keyboard_enabled
state, matching the predicate already applied to destination sessions.
A message arriving after the source permission was revoked (or from a
non-conforming peer) is no longer propagated to other sessions. The
existing local update_clipboard behavior is unchanged.

* fix(lang): translate the new clipboard sync entries in all locale files

Fill the 'Sync clipboard between sessions' label and its tooltip in
every locale file instead of leaving them blank, following each file's
existing terminology. template.rs keeps the empty master entries.
2026-09-01 10:47:26 +08:00
fufesou
0b08a83d4b fix(file-transfer): improve large directory loading (#15830)
* fix(file-transfer): improve large directory loading

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(file-transfer): avoid failing newer directory reads

Track each remote directory request by its registered completer and only remove
the task when it still matches, preventing stale failures from affecting newer
requests for the same path.

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(file-transfer): handle slow directory listings safely

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(file transfer): correlate directory responses with requests

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(file transfer): prevent automatic directory responses from matching requests

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(file-transfer): handle large remote directory listings reliably

- build file rows lazily
- register remote reads before sending requests
- handle Home paths, stale responses, errors, and timeouts
- serialize same-path reads with different hidden-file options

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(file transfer): reduce diffs

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix: build

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix: invalidate pending dir reads on reconnect

Signed-off-by: fufesou <linlong1266@gmail.com>

* test(file-transfer): cover remote directory read lifecycle

Signed-off-by: fufesou <linlong1266@gmail.com>

---------

Signed-off-by: fufesou <linlong1266@gmail.com>
2026-08-27 13:01:11 +08:00
fufesou
fd471fcf02 fix: show speed in desktop file transfer status (#15980)
* fix: show speed in desktop file transfer status

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix: move file transfer speed beside progress bar

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix: move file transfer speed into progress bar

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix: refine file transfer speed display

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix: adapt file transfer progress text colors

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix: reduce file transfer speed text weight

Signed-off-by: fufesou <linlong1266@gmail.com>

---------

Signed-off-by: fufesou <linlong1266@gmail.com>
2026-08-27 11:08:58 +08:00
Mariano Abad
3f207e91f6 fix(linux): a session logout should hand the peer to the login screen (#15905)
* fix(linux): a session logout should hand the peer to the login screen

Logging out closes every window in the session, the connection manager's
included, and its close handler kicks every peer with the reason a person
gets when they disconnect one by hand. That reason is the one thing the
client never retries on, so the remote session dies on a frozen frame
instead of reconnecting to the greeter that is already there.

The close carries nothing to tell the two apart: measured on KDE, the CM
receives no signal and logind still reports the session active at that
instant, and the server is killed within a few hundred ms either way, so
neither a state check nor a grace period can decide it. What is
distinguishable is the ACTION: disconnecting a peer is not the same event
as this window going away. So the window-close path now says so, and the
server ends the session without poisoning the retry; the Disconnect
button and the app's own close control keep kicking exactly as before.
Linux only, since that is where a logout closes the window.

Verified on plasma/sddm with a client attached: a logout now reconnects
to the greeter with no dialog, while closing the manager window still
shows Closed manually by the peer.

* fix(linux): close the tunnel too, and keep the web build compiling

Three seams the first pass missed. The web bridge is hand written, not
generated, so the new call needs its stub there or flutter build web
stops compiling - and that job is disabled in CI, so it would have gone
green. try_port_forward_loop is a second consumer of the same channel
and only knew Close, so a forwarded tunnel outlived the window it was
supposed to die with. And the variant had landed inside the DRM section,
whose comment says everything below it is drm-gated.
2026-08-26 18:26:26 +08:00
palmoni5
61ddade049 fix(windows): restore keyboard focus when the cursor re-enters the remote image (#15880)
* fix(windows): restore keyboard focus when the cursor re-enters the remote image

On Windows the raw key focus node is unfocused on window blur and nothing
requests it back, so returning to an already connected session left the
keyboard dead until the remote image was clicked.

Request focus from enterView(), gated on the window being active, the tab
being selected and no blocking overlay, so a background window cannot grab
system keys. enterOrLeave(true) is still driven by RawKeyFocusScope's
onFocusChange, so it is not called twice.

* fix(windows): refocus on window focus when the cursor already hovers the image

Alt+Tab or a taskbar click returns focus without a PointerEnter, so
enterView() cannot restore the keyboard. Reuse _cursorOverImage, gated
on the selected tab and no blocking overlay.

* refactor(windows): share one focus predicate for every requestFocus path

The relative-mouse-mode restore on window focus could hand remote input
to this page while a blocking dialog was up or the tab was not selected.
2026-08-21 17:07:25 +08:00
fufesou
0a4b431ea2 fix: correct terminal mouse selection and scroll coordinates (#15915)
Signed-off-by: fufesou <linlong1266@gmail.com>
2026-08-20 13:10:45 +08:00
21pages
5679670506 fix(flutter): make Adjust Window reliable across desktop platforms (#15853)
* fix(flutter): make Adjust Window reliable across desktop platforms

  - Fix incorrect sizing on scaled displays by calculating the target from the
    rendered canvas scale and platform-specific window coordinate units.
  - Fix adjustments using the wrong monitor by querying the current remote
    window's screen, with the main window as fallback.
  - Fix stale geometry after fullscreen or maximized transitions by refreshing
    metrics before calculating and applying the target frame.
  - Fix fullscreen availability checks on Windows and macOS by predicting the
    restored window borders and caching each macOS window's pre-fullscreen work area.
  - Fix incorrect Linux work areas by handling GNOME Wayland fractional scaling
    and caching compositor/X11 work-area measurements when visibleFrame is wrong.
  - Prevent unsafe adjustments by rejecting invalid, oversized, or implausibly
    small target frames.
  - Avoid failures during window teardown by skipping adjustment when the view,
    screen, or native window frame is unavailable.

Signed-off-by: 21pages <sunboeasy@gmail.com>

* fix(flutter): harden Adjust Window handling

  - Use the dynamic Linux resize edge when predicting restored window bounds.
  - Treat GNOME fractional-scaling lookup failures as unknown without repeating
    the lookup for the remote window.
  - Stop adjustment safely when native window calls fail during window teardown.

Signed-off-by: 21pages <sunboeasy@gmail.com>

* fix(flutter): correct Linux monitor selection

Update window_size to use monitor height for vertical bounds, preventing incorrect screen selection with vertically stacked displays.

Signed-off-by: 21pages <sunboeasy@gmail.com>

* docs(flutter): simplify Linux screen handling comments

Keep the source rationale concise and move platform measurements and investigation details out of the implementation.

Signed-off-by: 21pages <sunboeasy@gmail.com>

* fix(flutter): align Adjust Window resize padding

Use the shared drag-to-resize padding for Linux restored-window predictions so menu validation matches the applied frame dimensions.

Signed-off-by: 21pages <sunboeasy@gmail.com>

* fix(flutter): remove Adjust Window screen fallback

Return null when the current window screen is unavailable instead of using the main window's scale factor and work area.

Signed-off-by: 21pages <sunboeasy@gmail.com>

* fix(linux): query Mutter monitor layout mode

  Use DisplayConfig.GetCurrentState instead of inferring scaling from
  experimental features, and handle Ubuntu's UI-scaled logical mode.

Signed-off-by: 21pages <sunboeasy@gmail.com>

* fix(flutter): use native maximized state for Wayland cache

Signed-off-by: 21pages <sunboeasy@gmail.com>

* fix(flutter): allow Adjust Window to fill work area

Signed-off-by: 21pages <sunboeasy@gmail.com>

* fix(flutter): avoid racing screen info updates

Signed-off-by: 21pages <sunboeasy@gmail.com>

* refactor(flutter): remove dead Adjust Window web plumbing

Signed-off-by: 21pages <sunboeasy@gmail.com>

* fix(flutter): tolerate near-unity Wayland scale factors

Signed-off-by: 21pages <sunboeasy@gmail.com>

* fix(flutter): harden window screen detection

Signed-off-by: 21pages <sunboeasy@gmail.com>

* fix(linux): drop deprecated GNOME session detection

Signed-off-by: 21pages <sunboeasy@gmail.com>

* fix(flutter): remove GNOME monitor layout mode flutter cache

Signed-off-by: 21pages <sunboeasy@gmail.com>

---------

Signed-off-by: 21pages <sunboeasy@gmail.com>
2026-08-19 15:08:58 +08:00
RustDesk
1984678785 Hide printer tab when settings disabled (#15901)
* fix: hide the printer settings tab when settings are disabled

The Security and Network tabs already honour `disable-settings`, but the
Printer tab was gated only on `hide-remote-printer-settings`, so custom
clients built with settings disabled still exposed it.

https://github.com/rustdesk/rustdesk-server-pro/issues/1001

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* feat: add hide-general-settings builtin option

Hides the General tab of the settings page. Unlike the other
hide-*-settings options this one is still useful when settings are
disabled, since `disable-settings` does not cover the General tab.

https://github.com/rustdesk/rustdesk-server-pro/issues/1001

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-19 10:48:30 +08:00
fufesou
b0008edcb5 refact: remove linux headless (#15866)
* refact: remove linux headless

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(linux): probe DRM availability asynchronously on login

Signed-off-by: fufesou <linlong1266@gmail.com>

* revert changes in drm_capturer.rs

Signed-off-by: fufesou <linlong1266@gmail.com>

* Update submodule hbb_common

Signed-off-by: fufesou <linlong1266@gmail.com>

* docs(linux): clarify DRM availability comments

Remove stale headless and unauthenticated-request
wording, and document the Available-only login-screen gate.

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(linux): remove unreachable session cleanup branch

Remove the obsolete empty-session path and
clarify the intended use of cached DRM availability.

Signed-off-by: fufesou <linlong1266@gmail.com>

---------

Signed-off-by: fufesou <linlong1266@gmail.com>
2026-08-18 15:02:50 +08:00
RustDesk
7aa98d43cf Refact/plugin removal leftovers (#15864)
* fix(flutter): dispose the settings PageController and order dispose() correctly

`dispose()` began with `super.dispose()`, so the mixin chain marked the State
defunct before the WidgetsBindingObserver registration and the periodic timer
were released. The `PageController` was never disposed at all: `Get.delete`
only runs `onDelete()` for a `GetLifeCycleBase`, and a plain `ChangeNotifier`
is not one, so every open/close of the Settings tab leaked one controller with
its listener still attached.

Also guard `switch2page` on the `Rx<SettingsTabKey>` registration it actually
reads rather than only the `PageController` — now that both are really
deleted, a partial teardown would throw into the catch and silently open the
wrong tab — and re-check `mounted` after the await in the `_videoConnTimer`
tick, which `Timer::cancel` cannot stop once the body has started.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* refact: finish the plugin-framework removal sweep

#15854 removed the feature but stopped short of its leftovers:

- `Uninstall`, `Enable`, `Disable`, `Options` and `Please install plugins`
  were consumed only by the deleted `flutter/lib/plugin/**`; drop them from
  template.rs and the 50 locale files (250 dead entries). `Update` and
  `Install` stay, still used by desktop_home_page.dart.
- The server no longer sends `PrvOnFailedPlugin`, and the client no longer
  offers to install plugins when privacy mode fails to turn on.
- Drop the MSI `F_Client_Plugins` / `F_Server_Plugins` localization strings;
  no `.wxs` references them.
- `_DisplayMenu`'s constructor became a pure pass-through once `pluginItem`
  was removed, and the cfg inside `handle_input` repeats the one on the
  function itself.
- Normalize `src/lang/sl.rs` to 0644, the only executable file under src/.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

* fix(client): handle legacy privacy mode plugin failures

Signed-off-by: fufesou <linlong1266@gmail.com>

---------

Signed-off-by: fufesou <linlong1266@gmail.com>
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
Co-authored-by: fufesou <linlong1266@gmail.com>
2026-08-14 18:52:03 +08:00
fufesou
d1da05c4db refact: remove feature plugin-framework (#15854)
* refact: remove feature plugin-framework

Signed-off-by: fufesou <linlong1266@gmail.com>

* refact: remove unused translations

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix: delete settings tab observable with correct type

Signed-off-by: fufesou <linlong1266@gmail.com>

---------

Signed-off-by: fufesou <linlong1266@gmail.com>
2026-08-14 14:31:13 +08:00
RustDesk
d6ea170061 Id whitelist (#15586)
* id whitelist

* hbb_common

* Update flutter/lib/common/widgets/dialog.dart

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

* support wss:// for web client

Signed-off-by: 21pages <sunboeasy@gmail.com>

* fix: handle ID copying separately and remove whitelist logs

Signed-off-by: 21pages <sunboeasy@gmail.com>

* fix en translation

Signed-off-by: 21pages <sunboeasy@gmail.com>

* fix: check switch-side ID whitelist after login initialization

Signed-off-by: 21pages <sunboeasy@gmail.com>

* track pending 2FA challenge state

Signed-off-by: 21pages <sunboeasy@gmail.com>

* support Unicode IDs in whitelist settings

Signed-off-by: 21pages <sunboeasy@gmail.com>

* refactor: unify client ID resolution

Signed-off-by: 21pages <sunboeasy@gmail.com>

---------

Signed-off-by: 21pages <sunboeasy@gmail.com>
Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>
Co-authored-by: 21pages <sunboeasy@gmail.com>
2026-07-27 23:24:32 +08:00
fufesou
eefd22b205 fix(macos): prevent remote keyboard focus leaks (#15629)
* fix(macos): prevent remote keyboard focus leaks

Gate keyboard grabbing on window, tab, lifecycle, and primary focus state.
Release grabs on focus loss or minimize and avoid duplicate grab transitions.

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix: macos, keyboard focus, comments known issue

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix: macos, keyboard, fullscreen space switch

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix: macos, keyboard, focus, relative mouse mode

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(macOS): preserve local overlay focus during input recovery

Prevent fullscreen and relative-mouse focus recovery from reclaiming
remote keyboard input while a local chat or dialog overlay owns focus.

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix: macos, keyboard, comments trade-off

Signed-off-by: fufesou <linlong1266@gmail.com>

---------

Signed-off-by: fufesou <linlong1266@gmail.com>
2026-07-26 11:54:01 +08:00
21pages
cefff781d4 feat(recording): add visibility and service storage options (#15662)
* feat(recording): add visibility and service storage options

  - support hide-recording-button in Flutter and Sciter
  - allow a custom save directory for Windows service recordings
  - sanitize peer IDs used in recording filenames

  Tested:
  - with hide-recording-button=Y and allow-auto-record-outgoing=Y,
    outgoing sessions are recorded automatically while the recording button
    remains hidden and cannot be stopped from the UI; verified on Flutter
    desktop, Sciter, and Android
  - windows-service-video-save-directory takes effect when the Windows client
    runs as an installed service
  - the Windows controlling side can save recordings for direct IP:port
    connections

Signed-off-by: 21pages <sunboeasy@gmail.com>

* update hbb_common

Signed-off-by: 21pages <sunboeasy@gmail.com>

* fix(recording): validate configured save directories

  - trim configured recording directory paths
  - reject non-absolute paths and fall back to defaults
  - warn when a non-empty path is invalid

Signed-off-by: 21pages <sunboeasy@gmail.com>

* fix(recording): validate configured save directories

Signed-off-by: 21pages <sunboeasy@gmail.com>

---------

Signed-off-by: 21pages <sunboeasy@gmail.com>
2026-07-25 15:21:13 +08:00
bmmh1
929e989f17 feat(macos): silent auto-update with security hardening (#15550)
Co-authored-by: bmmh1 <bmmh1@users.noreply.github.com>
2026-07-23 00:22:10 +08:00
RustDesk
082a5a2a4e Revert "Fix Adjust Window sizing across DPI (#15592)" (#15620)
This reverts commit 61f0944990.
2026-07-18 16:37:30 +08:00
21pages
61f0944990 Fix Adjust Window sizing across DPI (#15592)
* Fix Adjust Window sizing across DPI and fullscreen transitions

Signed-off-by: 21pages <sunboeasy@gmail.com>

* Use visible screen frame for Adjust Window

Signed-off-by: 21pages <sunboeasy@gmail.com>

* Tolerate floating-point errors in Adjust Window sizing

Signed-off-by: 21pages <sunboeasy@gmail.com>

* Fix review, fix Adjust Window async metric guards

Capture the current screen before awaiting window geometry so one target-frame calculation uses consistent screen metrics.

Return early when adjusting without a context and the Flutter view list is empty, instead of calling views.first after the window or engine may have been torn
    down.

Clarify the platform coordinate units used for Adjust Window scaling.

* Fix Adjust Window for maximized Linux windows

Unmaximize Linux remote windows before applying Adjust Window because native setFrame may be ignored while the window is maximized.

* Fix Adjust Window screen refresh guards

Refresh screen metrics before checking Adjust Window availability and again after exiting fullscreen so target-frame calculation uses current window geometry.

Hide Adjust Window on web because resizing relies on desktop window APIs.

* Fix review, handle missing window frame in Adjust Window

Return null when WindowController.getFrame fails so Adjust Window availability checks and resize attempts skip cleanly if the window is hidden or disposed.

---------

Signed-off-by: 21pages <sunboeasy@gmail.com>
2026-07-18 16:32:58 +08:00
rustdesk
94a2a2bb4a fix https://github.com/rustdesk/rustdesk/issues/15566 2026-07-11 21:43:04 +08:00
alonginwind
a2b79462ab fix: auto-close terminal tab/window when shell exits (#15448) 2026-07-02 16:43:27 +08:00
rustdesk
435f6ec61d update copyright 2026-06-30 11:02:28 +08:00
fufesou
58ee593e26 fix(custom-client): show options, incoming-only (#15394)
Signed-off-by: fufesou <linlong1266@gmail.com>
2026-06-24 00:26:09 +08:00
rustdesk
16570ee34f fix https://github.com/rustdesk/rustdesk/discussions/15355 2026-06-22 22:57:08 +08:00
StealUrKill
bff47e2b81 Feature: Add monitor-switch buttons to remote toolbars (#15342)
* Feature: add monitor-switch buttons to remote toolbars

Add buttons to cycle through the remote displays from the toolbars:

- A main-toolbar button and a minimized-handle button, both using a shared SVG icon with the current monitor number overlaid.
- Two opt-in settings under Settings/Other. The minimized-toolbar option is nested under the main-toolbar option.
- The minimized button only appears once the toolbar is collapsed.
- Cycling does not move the remote cursor, matching the existing in-toolbar monitor buttons.

Signed-off-by: StealUrKill <35749471+StealUrKill@users.noreply.github.com>

* fix: respect individual-window display mode when cycling

In "Show displays as individual windows" mode, route the cycle button through openMonitorInNewTabOrWindow like the monitor selector, so each display keeps its own window instead of repurposing the current one.

Signed-off-by: StealUrKill <35749471+StealUrKill@users.noreply.github.com>

---------

Signed-off-by: StealUrKill <35749471+StealUrKill@users.noreply.github.com>
2026-06-20 01:22:20 +08:00
RustDesk
a658e987b7 Revert "Feature: Add monitor-switch buttons to remote toolbars (#15314)" (#15338)
This reverts commit 7c8b0adc1e.
2026-06-19 12:34:59 +08:00
StealUrKill
7c8b0adc1e Feature: Add monitor-switch buttons to remote toolbars (#15314)
* Feature: add monitor-switch buttons to remote toolbars

Add a one-click "switch to next monitor" control to both desktop toolbars:
- Main toolbar: always shown when the remote has more than one monitor,
  styled to match the existing blue icon buttons (white screen, black number).
- Minimized (draggable show/hide) toolbar: off by default, toggled via a new
  "Show monitor switch on minimized toolbar" checkbox in the Display menu and
  persisted as a local option.

Signed-off-by: StealUrKill <35749471+StealUrKill@users.noreply.github.com>

* Update remote_toolbar.dart

* refact: unify monitor-switch button icons, share tooltip

Addressing the review feedback on the monitor-switch toolbar buttons:

- Add assets/display_switcher.svg and use it for both the main and minimized buttons. This replaces the hand-drawn glyph (Containers + magic numbers) on the main toolbar. The icon scales with DPI/theme and the two toolbars stay visually consistent.
- Flip the minimized button's label to white for contrast, since the new icon has a solid screen.
- Move the tooltip string into a shared _MonitorCycle.tooltip getter so both buttons use one source of truth.
- Use const Offstage() for consistency with the surrounding returns.

Signed-off-by: StealUrKill <35749471+StealUrKill@users.noreply.github.com>

* Improve monitor-switch settings and toolbar behavior

- Nest the minimized-toolbar option under the main one in settings only show when the main option is enabled.

- Only show the minimized switch button on the collapsed toolbar handle, so it no longer duplicates the main switch while the toolbar is expanded.

Signed-off-by: StealUrKill <35749471+StealUrKill@users.noreply.github.com>

---------

Signed-off-by: StealUrKill <35749471+StealUrKill@users.noreply.github.com>
Co-authored-by: RustDesk <71636191+rustdesk@users.noreply.github.com>
2026-06-19 11:19:08 +08:00
fufesou
0797ebb695 Refact/privacy mode 1 multi monitors (#15321)
* refact: privacy mdoe 1, multi-monitors

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix: harden privacy mode overlay & capture cleanup

Signed-off-by: fufesou <linlong1266@gmail.com>

* Fix privacy mode edge cases after multi-monitor overlay changes

Signed-off-by: fufesou <linlong1266@gmail.com>

* Add missing changes

Signed-off-by: fufesou <linlong1266@gmail.com>

---------

Signed-off-by: fufesou <linlong1266@gmail.com>
2026-06-18 21:27:44 +08:00
RustDesk
f4a0535289 autocomplete online (#15313)
* autocomplete online

* review fix

* review fix

* remove literalInput
2026-06-17 22:04:34 +08:00
RustDesk
6665242edf Revert "refact: privacy mdoe 1, multi-monitors (#15318)" (#15320)
This reverts commit 3cdf1cce54.
2026-06-17 21:46:40 +08:00
fufesou
3cdf1cce54 refact: privacy mdoe 1, multi-monitors (#15318)
* refact: privacy mdoe 1, multi-monitors

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix: harden privacy mode overlay & capture cleanup

Signed-off-by: fufesou <linlong1266@gmail.com>

---------

Signed-off-by: fufesou <linlong1266@gmail.com>
2026-06-17 21:43:57 +08:00
fufesou
6426269d41 Refact/printer driver default unchecked (#15191)
* refact: installation, printer driver, default unchecked

Signed-off-by: fufesou <linlong1266@gmail.com>

* refact: silent install, get option from the reg values

Signed-off-by: fufesou <linlong1266@gmail.com>

* refact: silent install, arg printer=[0|1]

Signed-off-by: fufesou <linlong1266@gmail.com>

---------

Signed-off-by: fufesou <linlong1266@gmail.com>
2026-06-06 08:51:08 +08:00
fufesou
3217125dd3 fix(keyboard): wayland clipboard input prompt (#14700)
* fix(keyboard): wayland clipboard input prompt

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(wayland): Simple refactor

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(wayland): clipboard input, remove unused code

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(wayland): Simple refactor

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(wayland): dialog, better enableAndContinue

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(wayland): input dialog consent

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(wayland): prompt text

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(wayland): text input

1. Use `keysym` for the installed version if possible.
2. Use the clipboard if the string cannot be fully handled by `keysym`.

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(wayland): input prompt dialog

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(wayland): translations

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(wayland): dialog, title type

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(wayland): better decode_utf8_prefix()

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(wayland): better process_chr()

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(wayland): unit tests

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(wayland): input prompt dialog, no icon

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(wayland): input dialog, Toast show the result

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(wayland): input dialog, showToast() on persist failed

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(wayland): input prompt, better dialog

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(wayland): input prompt dialog, translations

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(input): better wayland clipboard input prompt

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(input): wayland clipboard, link external app

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(input): trivial changes

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(input): wayland clipboard input, dialog content

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(input): tranlsations

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(input): translations

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(input): translations

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(input): translations

Signed-off-by: fufesou <linlong1266@gmail.com>

---------

Signed-off-by: fufesou <linlong1266@gmail.com>
2026-06-02 16:06:35 +08:00
Luke
6ad56075d6 Drag whole toolbar; snap to all four edges of the remote session window (#15051)
* Drag whole toolbar; snap to all four edges

Today the drag handle on the remote-session toolbar repositions only
the handle row -- the icons themselves stay centered at the top. This
change applies the position to the entire toolbar wrapper so dragging
the handle moves the whole thing, and extends snapping from top-only
to any of the four window edges.

When docked left/right the toolbar reflows vertically. A live ghost
preview shows where the toolbar will land while you drag, with a small
hysteresis bias to keep the preview from flickering near corners.

The legacy 'remote-menubar-drag-x' session option is read as a fallback
on first load so existing users keep their saved horizontal position;
new option keys are 'remote-menubar-edge' and 'remote-menubar-frac'.

Tested locally on Windows. macOS / Linux / web desktop use the same
shared widget with no platform-specific calls, but I did not verify
them.

* Load edge independently and clamp loaded fraction

Addresses CodeRabbit review on #15051: parse the saved edge regardless
of whether the new fraction option is present so a partial write of
frac doesn't reset the toolbar back to top, and clamp the loaded
fraction to the kOptionRemoteMenubarDragLeft/Right contract so a
corrupted or out-of-range saved value can't bypass the bounds until
the user drags again.

* Require edge activation zone to switch dock; preserve horizontal slide

Per review feedback on #15051: nearest-edge-wins made a low-intent
horizontal slide too easy to escalate into a high-impact orientation
change (vertical reflow on left/right dock). The default drag now
keeps the toolbar on its current dock edge and just updates the
fraction along that edge -- the prior horizontal-slide behavior.

An alternate edge is only previewed/committed when the cursor enters
its 32 px activation zone; once previewed, the cursor has to move
back 64 px before reverting (hysteresis at the zone boundary).

* Gate multi-edge docking behind a settings toggle; default = horizontal slide

Replaces the activation-zone approach with an explicit opt-in setting
in Settings -> Other ("Allow docking remote toolbar to any window
edge"). This addresses the concern that a low-intent horizontal drag
shouldn't be able to trigger a high-impact orientation change, while
still letting users who want multi-edge docking opt in cleanly.

Default (toggle off):
  - The original horizontal slide is preserved.
  - The bug fix from the first commit still applies: dragging the
    handle moves the whole toolbar, and the position persists across
    collapse/expand (no more re-center on re-open).
  - Draggable is axis-locked to horizontal so the feedback widget
    stays on the top line during drag.

Opt-in (toggle on):
  - Full nearest-edge wins with the live preview ghost and corner
    hysteresis; toolbar reflows vertically on left/right docks.
  - Draggable is unlocked for 2D drag.

Reads the option via mainGetLocalBoolOptionSync so the toolbar's
default state matches what the settings checkbox shows; the option
key uses the allow- prefix so unset defaults to off.

Takes effect on next session (setting is read at session init).

The setting key (allow-multi-edge-toolbar-dock) is read by the
existing local-options machinery and persists per-install without
needing to be registered in libs/hbb_common's KEYS_LOCAL_SETTINGS.
Can add that registration in a parallel hbb_common PR if preferred.

* Fix remote toolbar drag positioning & persistence

Align drag fraction calculation with the toolbar's actual travel range,
keep preview sizing stable during drag, and preserve legacy horizontal
position storage when multi-edge docking is disabled.

Signed-off-by: fufesou <linlong1266@gmail.com>

* Remote toolbar snap edges

1. Translations
2. Apply option to remote windows on changed

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix: avoid remote toolbar docking jumps on setting reload

Signed-off-by: fufesou <linlong1266@gmail.com>

* Fix remote toolbar docking updates and drag sync

Signed-off-by: fufesou <linlong1266@gmail.com>

* refact: translation key

Signed-off-by: fufesou <linlong1266@gmail.com>

* feat(toolbar-snap-edges): test web

Signed-off-by: fufesou <linlong1266@gmail.com>

* Fix remote toolbar docking sync and vertical layout

Signed-off-by: fufesou <linlong1266@gmail.com>

* Fix remote toolbar monitor controls on side docks

Signed-off-by: fufesou <linlong1266@gmail.com>

---------

Signed-off-by: fufesou <linlong1266@gmail.com>
Co-authored-by: fufesou <linlong1266@gmail.com>
2026-05-24 19:08:45 +08:00
Yan Wang
d8808baa83 Allow macOS monitor switching in privacy mode (#15004)
Co-authored-by: Codex <codex@openai.local>
2026-05-11 12:58:49 +08:00
fufesou
1978020d27 fix(custom-client): desktop, incoming only, touch drag (#14928)
Signed-off-by: fufesou <linlong1266@gmail.com>
2026-05-11 12:58:32 +08:00
RustDesk
6c20fc936d Terminal utf8 and reconnect (#14895)
* fix: handle incomplete UTF-8 sequences in terminal output, rework on https://github.com/rustdesk/rustdesk/pull/14736

* Fix terminal auto-reconnect freeze:  reconnect resumes terminal output, while multi-tab reconnect avoids restoring duplicate tabs for terminals that are already open.

* fix(terminal): subtract with overflow

```
thread '<unnamed>' panicked at src\server\terminal_service.rs:476:17:
attempt to subtract with overflow
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
thread 'tokio-runtime-worker' panicked at src\server\terminal_service.rs:1576:50:
called `Result::unwrap()` on an `Err` value: PoisonError { .. }
[2026-04-25T07:17:34Z ERROR librustdesk::server::service] Failed to join thread for service ts_9badd3fe-2411-4996-9f40-93c979009edd, Any { .. }
```

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix ios enter: https://github.com/rustdesk/rustdesk/issues/14907

* fix(terminal): reconnect, error handling

1. Terminal shows "^[[1;1R^[[2;2R^[[>0;0;0c"
2. NaN

```
[ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled Exception: Converting object to an encodable object failed: NaN
...
```

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(terminal): dialog, close window

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(terminal): close terminal window on disconnect dialog

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(terminal): merge reconnect backlog into replay output

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(terminal): avoid reconnect stalls and delayed layout writes

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(terminal): remove invalid test

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(terminal): schedule frame before flushing buffered output

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(terminal): windows&macos, charset utf-8

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(terminal): reconnect suppress next output

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix: cap terminal reconnect replay output

  - split reconnect replay backlog into capped chunks
  - mark terminal data replay chunks for client-side suppression
  - avoid using open-message text to suppress xterm replies
  - reuse default terminal padding value
  - remove misleading Enter-key normalization PR link

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(terminal): env en_US.UTF-8

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(terminal): reconnect, refactor

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(terminal): flag, retry output

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(terminal): update hbb_common

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(terminal): comments

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(terminal): comments utf-8 chunk accumulator

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(terminal): update hbb_common

Signed-off-by: fufesou <linlong1266@gmail.com>

---------

Signed-off-by: fufesou <linlong1266@gmail.com>
Co-authored-by: fufesou <linlong1266@gmail.com>
2026-05-07 13:27:13 +08:00
21pages
5439ec38b6 Revert "fix web break introduced in 38f130071 fix(linux): enable mouse side buttons in remote sessions (#14848)" (#14973)
This reverts commit d5d0b01266.
2026-05-06 20:20:17 +08:00
rustdesk
d5d0b01266 fix web break introduced in 38f130071 fix(linux): enable mouse side buttons in remote sessions (#14848) 2026-05-06 18:27:34 +08:00
fufesou
383a5c3478 feat: option, enable-privacy-mode & enable-perm-change-in-accept-window (#14875)
* feat: option, privacy mode

Signed-off-by: fufesou <linlong1266@gmail.com>

* feat(privacy mode): update libs/hbb_common

Signed-off-by: fufesou <linlong1266@gmail.com>

* feat(privacy mode): turn off on disable privacy mode

Signed-off-by: fufesou <linlong1266@gmail.com>

* feat(privacy mode): better check if supported

Signed-off-by: fufesou <linlong1266@gmail.com>

* feat(option): enable perm change in accept window

Signed-off-by: fufesou <linlong1266@gmail.com>

---------

Signed-off-by: fufesou <linlong1266@gmail.com>
2026-05-02 00:44:22 +08:00
fufesou
170516572e refact(password): Store permanent password as hashed verifier (#14619)
* refact(password): Store permanent password as hashed verifier

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(password): remove unused code

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(password): mobile, password dialog, width 500

Signed-off-by: fufesou <linlong1266@gmail.com>

---------

Signed-off-by: fufesou <linlong1266@gmail.com>
2026-03-26 14:49:54 +08:00
21pages
c457b0e7d3 add option to hide stop-service when service is running (#14563)
* add option to hide stop-service when service is running

Signed-off-by: 21pages <sunboeasy@gmail.com>

* update hbb_common to upstream

Signed-off-by: 21pages <sunboeasy@gmail.com>

---------

Signed-off-by: 21pages <sunboeasy@gmail.com>
2026-03-19 20:04:10 +08:00
21pages
1abc897c45 fix avatar fallback (#14458)
* fix avatar fallback

Signed-off-by: 21pages <sunboeasy@gmail.com>

* fix(ui): improve avatar fallback handling and layout consistency

  - Always show spacing in account section regardless of avatar presence
  - Handle null return from buildAvatarWidget with proper fallback
  - Adjust mobile settings avatar size to 28

Signed-off-by: 21pages <sunboeasy@gmail.com>

---------

Signed-off-by: 21pages <sunboeasy@gmail.com>
2026-03-05 12:30:40 +08:00
RustDesk
ab64a32f30 avatar (#14440)
* avatar

* refactor avatar display: unify rendering and resolve at use time

  - Extract buildAvatarWidget() in common.dart to share avatar rendering
    logic across desktop settings, desktop CM and mobile CM
  - Add resolve_avatar_url() in Rust, exposed via FFI (SyncReturn),
    to resolve relative avatar paths (e.g. "/avatar/xxx") to absolute URLs
  - Store avatar as-is in local config, only resolve when displaying
    (settings page) or sending (LoginRequest)
  - Resolve avatar in LoginRequest before sending to remote peer
  - Add error handling for network image load failures
  - Guard against empty client.name[0] crash
  - Show avatar in mobile settings page account tile

Signed-off-by: 21pages <sunboeasy@gmail.com>

* web: implement mainResolveAvatarUrl via js getByName

Signed-off-by: 21pages <sunboeasy@gmail.com>

* increase ipc Data enum size limit to 120 bytes

Signed-off-by: 21pages <sunboeasy@gmail.com>

---------

Signed-off-by: 21pages <sunboeasy@gmail.com>
Co-authored-by: 21pages <sunboeasy@gmail.com>
2026-03-04 21:43:19 +08:00
fufesou
e4208aa9cf fix(update): revert check (#14423)
Signed-off-by: fufesou <linlong1266@gmail.com>
2026-02-28 16:33:54 +08:00
fufesou
4abdb2e08b feat: windows, custom client, update (#13687)
Signed-off-by: fufesou <linlong1266@gmail.com>
2026-02-27 21:50:20 +08:00
fufesou
0016033937 feat(terminal): add reconnection buffer support for persistent sessions (#14377)
* feat(terminal): add reconnection buffer support for persistent sessions

Fix two related issues:
1. Reconnecting to persistent sessions shows blank screen - server now
   automatically sends historical buffer on reconnection via SessionState
   machine with pending_buffer, eliminating the need for client-initiated
   buffer requests.
2. Terminal output before view ready causes NaN errors - buffer output
   chunks on client side until terminal view has valid dimensions, then
   flush in order on first valid resize.

Rust side:
- Introduce SessionState enum (Closed/Active) replacing bool is_opened
- Auto-attach pending buffer on reconnection in handle_open()
- Always drain output channel in read_outputs() to prevent overflow
- Increase channel buffer from 100 to 500
- Optimize get_recent() to collect whole chunks (avoids ANSI truncation)
- Extract create_terminal_data_response() helper (DRY)
- Add reconnected flag to TerminalOpened protobuf message

Flutter side:
- Buffer output chunks until terminal view has valid dimensions
- Flush buffered output on first valid resize via _markViewReady()
- Clear terminal on reconnection to avoid duplicate output from buffer replay
- Fix max_bytes type (u32) to match protobuf definition
- Pass reconnected field through FlutterHandler event

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(terminal): add two-phase SIGWINCH for TUI app redraw and session remap on reconnection

Fix TUI apps (top, htop) not redrawing after reconnection. A single
resize-then-restore is too fast for ncurses to detect a size change,
so split across two read_outputs() polling cycles (~30ms apart) to
force a full redraw.

Also fix reconnection failure when client terminal_id doesn't match
any surviving server-side session ID by remapping the lowest surviving
session to the requested ID.

Rust side:
- Add two-phase SIGWINCH state machine (SigwinchPhase: TempResize →
  Restore → Idle) with retry logic (max 3 attempts per phase)
- Add do_sigwinch_resize() for cross-platform PTY resize (direct PTY
  and Windows helper mode)
- Add session remap logic for non-contiguous terminal_id reconnection
- Extract try_send_output() helper with rate-limited drop logging (DRY)
- Add 3-byte limit to UTF-8 continuation byte skipping in get_recent()
  to prevent runaway on non-UTF-8 binary data
- Remove reconnected flag from flutter.rs (unused on client side)

Flutter side:
- Add reconnection screen clear and deferred flush logic
- Filter self from persistent_sessions restore list
- Add comments for web-related changes

Signed-off-by: fufesou <linlong1266@gmail.com>

---------

Signed-off-by: fufesou <linlong1266@gmail.com>
2026-02-24 21:12:06 +08:00
RustDesk
6c3515588f - UI display: display_name first (#14358)
* - UI display: display_name first
  - Fallback: name
  - Technical identity: still name

  ### What changed

  - Added account display helpers and display_name state in user model:
      - flutter/lib/models/user_model.dart:16
  - Account/logout label now uses display_name (@name) when both exist:
      - flutter/lib/mobile/pages/settings_page.dart:689
      - flutter/lib/desktop/pages/desktop_setting_page.dart:2016
      - flutter/lib/desktop/pages/desktop_setting_page.dart:2135
  - Desktop Account info now shows both when applicable:
      - Display Name: ...
      - Username: ...
      - flutter/lib/desktop/pages/desktop_setting_page.dart:2039
  - Previously done group-list behavior remains:
      - group user list displays display_name with name fallback
      - flutter/lib/common/widgets/my_group.dart:187
  - Persistence path for display_name remains enabled (including group cache/submodule field):
      - libs/hbb_common/src/config.rs:2347
  - src/client.rs:2630
  - LoginRequest.my_name now resolves as:
      1. OPTION_DISPLAY_NAME (manual override)
      2. user_info.display_name
      3. user_info.name
      4. OS username fallback

* 1. GUID key (...Uninstall\{GUID}) is MSI-native metadata generated by Windows Installer.
  2. Non-GUID key (...Uninstall\RustDesk) is explicitly written by RustDesk’s MSI compatibility component in res/msi/Package/Components/Regs.wxs:44, populated by preprocess.py --arp from .github/workflows/
     flutter-build.yml:262.

  So they were not using the same EstimatedSize logic:

  - MSI GUID key: MSI-calculated size (KB).
  - RustDesk key: custom script value from res/msi/preprocess.py:339 (previously bytes, now fixed to KB).

  That mismatch is exactly why you saw different sizes.

* improve display name handling

  - Append (@username) when multiple users share the same display name
  - Trim whitespace from display_name before comparison and display
  - Add missing translate() for Logout button on desktop

Signed-off-by: 21pages <sunboeasy@gmail.com>

* group peer filter match both user's display name and user's name

Signed-off-by: 21pages <sunboeasy@gmail.com>

* case-insensitive search in group peer filter

Signed-off-by: 21pages <sunboeasy@gmail.com>

---------

Signed-off-by: 21pages <sunboeasy@gmail.com>
Co-authored-by: 21pages <sunboeasy@gmail.com>
2026-02-22 14:59:25 +08:00