diff --git a/libs/hbb_common b/libs/hbb_common
index 4eca5b45b..3afaf6494 160000
--- a/libs/hbb_common
+++ b/libs/hbb_common
@@ -1 +1 @@
-Subproject commit 4eca5b45b95b2f3d71789dc001595149c015fe72
+Subproject commit 3afaf6494475ef58dcaaae6b4e6d2303cc3d632b
diff --git a/src/rendezvous_mediator.rs b/src/rendezvous_mediator.rs
index d8ec3c102..f731a58de 100644
--- a/src/rendezvous_mediator.rs
+++ b/src/rendezvous_mediator.rs
@@ -383,14 +383,8 @@ impl RendezvousMediator {
     pub async fn start(server: ServerPtr, host: String) -> ResultType<()> {
         log::info!("start rendezvous mediator of {}", host);
         //If the investment agent type is http or https, then tcp forwarding is enabled.
-        let is_http_proxy = if let Some(conf) = Config::get_socks() {
-            let proxy = Proxy::from_conf(&conf, None)?;
-            proxy.is_http_or_https()
-        } else {
-            false
-        };
         if (cfg!(debug_assertions) && option_env!("TEST_TCP").is_some())
-            || is_http_proxy
+            || Config::is_proxy() 
             || get_builtin_option(config::keys::OPTION_DISABLE_UDP) == "Y"
         {
             Self::start_tcp(server, host).await