From 619fba5838cd85a0cf9a264498cece547b6c3180 Mon Sep 17 00:00:00 2001
From: RustDesk <71636191+rustdesk@users.noreply.github.com>
Date: Mon, 26 Apr 2021 11:46:20 +0800
Subject: [PATCH] recreate udp socket

---
 src/rendezvous_mediator.rs | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/rendezvous_mediator.rs b/src/rendezvous_mediator.rs
index bcb4cc4ac..0e5c9cfa1 100644
--- a/src/rendezvous_mediator.rs
+++ b/src/rendezvous_mediator.rs
@@ -211,7 +211,11 @@ impl RendezvousMediator {
                                 Config::update_latency(&host, -1);
                                 old_latency = 0;
                                 if now.duration_since(last_dns_check).map(|d| d.as_millis() as i64).unwrap_or(0) > DNS_INTERVAL {
-                                    allow_err!(rz.dns_check());
+                                    if let Ok(_) = rz.dns_check() {
+                                        // in some case of network reconnect (dial IP network),
+                                        // old UDP socket not work any more after network recover
+                                        socket = FramedSocket::new(Config::get_any_listen_addr()).await?;
+                                    }
                                     last_dns_check = now;
                                 }
                             } else if fails > MAX_FAILS1 {