Increase response read timeout to 30 seconds

- Allows more time for wsssht to send HTTP responses
- Prevents premature timeout that causes connection closure

wssshd2/web_proxy.c

@@ -638,7 +638,7 @@ static int handle_proxy_request(int client_fd, wssshd_state_t *state, const wsss
         while (1) {
             FD_ZERO(&read_fds);
             FD_SET(tunnel_fd, &read_fds);
-            tv.tv_sec = 10; // 10 second timeout
+            tv.tv_sec = 30; // 30 second timeout
             tv.tv_usec = 0;
 
             int activity = select(tunnel_fd + 1, &read_fds, NULL, NULL, &tv);