tcp proxy (#14633)

* tcp proxy

* fix per review

* fix per review

* Suppress secure_tcp info logs for TCP proxy requests

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

* copilot review: redact tcp proxy logs, dedupe headers, and avoid body clone

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

* format common.rs

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

* copilot review: test function name

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

* copilot review: format IPv6 tcp proxy log targets correctly

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

* copilot review: normalize HTTP method before direct request dispatch

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

* review: extract fallback helper, fix Content-Type override, add overall timeout

- Extract duplicated TCP proxy fallback logic into generic
  `with_tcp_proxy_fallback` helper used by both `post_request` and
  `http_request_sync`, eliminating code drift risk
- Allow caller-supplied Content-Type to override the default in
  `parse_simple_header` instead of silently dropping it
- Take body by reference in `post_request_http` to avoid eager clone
  when no fallback is needed
- Wrap entire `tcp_proxy_request` flow (connect + handshake + send +
  receive) in an overall timeout to prevent indefinite stalls

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* review: make is_public case-insensitive and cover mixed-case rustdesk URLs

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

* oidc: route auth requests through shared HTTP/tcp-proxy path while keeping TLS warmup

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

* refactor: replace unused TryFrom<Response> with HbbHttpResponse::parse method

  Remove TryFrom<Response> impl that was never called and replace the
  private parse_hbb_http_response helper in account.rs with a public
  parse() method on HbbHttpResponse, eliminating code duplication.

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

---------

Signed-off-by: 21pages <sunboeasy@gmail.com>
Co-authored-by: 21pages <sunboeasy@gmail.com>
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

src/hbbs_http.rs

@@ -1,4 +1,4 @@
-use reqwest::blocking::Response;
+use hbb_common::ResultType;
 use serde::de::DeserializeOwned;
 use serde_json::{Map, Value};
 
@@ -21,11 +21,9 @@ pub enum HbbHttpResponse<T> {
     Data(T),
 }
 
-impl<T: DeserializeOwned> TryFrom<Response> for HbbHttpResponse<T> {
-    type Error = reqwest::Error;
-
-    fn try_from(resp: Response) -> Result<Self, <Self as TryFrom<Response>>::Error> {
-        let map = resp.json::<Map<String, Value>>()?;
+impl<T: DeserializeOwned> HbbHttpResponse<T> {
+    pub fn parse(body: &str) -> ResultType<Self> {
+        let map = serde_json::from_str::<Map<String, Value>>(body)?;
         if let Some(error) = map.get("error") {
             if let Some(err) = error.as_str() {
                 Ok(Self::Error(err.to_owned()))