Add debug logging to trace http.Serve connection handling

- Log before and after http.Serve calls
- Add debugging comments to connection wrapper
- Should reveal why http.Serve is not calling handlers
- Helps diagnose connection reset issue

Co-authored-by: f0ssel <[email protected]>

Author: blink-so[bot]

proxy/proxy.go

@@ -541,7 +541,9 @@ func (p *Server) handleConnectionWithTLSDetection(conn net.Conn) {
 	} else {
 		p.logger.Debug("Detected HTTP request, handling normally")
 		// Use HTTP server with regular connection
-		http.Serve(&singleConnectionListener{conn: connWrapper}, http.HandlerFunc(p.handleHTTP))
+		p.logger.Debug("About to call http.Serve for HTTP connection")
+		err = http.Serve(&singleConnectionListener{conn: connWrapper}, http.HandlerFunc(p.handleHTTP))
+		p.logger.Debug("http.Serve completed", "error", err)
 	}
 }
 
@@ -830,6 +832,8 @@ func (c *connectionWrapper) Read(p []byte) (int, error) {
 	if !c.bufUsed && len(c.buf) > 0 {
 		n := copy(p, c.buf)
 		c.bufUsed = true
+		// Debug: log that we're returning the unread byte
+		// p.logger.Debug("connectionWrapper returning unread byte", "byte", c.buf[0])
 		return n, nil
 	}
 	return c.Conn.Read(p)