this way can not get right extern ip

src/rendezvous_server.rs

@@ -66,10 +66,6 @@ struct PeerMap {
     db: super::SledAsync,
 }
 
-lazy_static::lazy_static! {
-    static ref PUBLIC_IP: Arc<RwLock<String>> = Default::default();
-}
-
 pub const DEFAULT_PORT: &'static str = "21116";
 
 impl PeerMap {
@@ -223,12 +219,6 @@ impl RendezvousServer {
                 }
                 Ok((stream, addr)) = listener.accept() => {
                     log::debug!("Tcp connection from {:?}", addr);
-                    if let Ok(local_addr) = stream.local_addr() {
-                        if PUBLIC_IP.write().unwrap().is_empty() {
-                            log::info!("Public ip is {}", local_addr.ip().to_string());
-                        }
-                        *PUBLIC_IP.write().unwrap() = local_addr.ip().to_string();
-                    }
                     let (a, mut b) = Framed::new(stream, BytesCodec::new()).split();
                     let tcp_punch = rs.tcp_punch.clone();
                     let mut rs = rs.clone();
@@ -604,7 +594,7 @@ impl RendezvousServer {
                 };
                 msg_out.set_fetch_local_addr(FetchLocalAddr {
                     socket_addr,
-                    relay_server: check_relay_server(&self.relay_servers[i]),
+                    relay_server: self.relay_servers[i].clone(),
                     ..Default::default()
                 });
             } else {
@@ -621,7 +611,7 @@ impl RendezvousServer {
                 msg_out.set_punch_hole(PunchHole {
                     socket_addr,
                     nat_type: ph.nat_type,
-                    relay_server: check_relay_server(&self.relay_servers[i]),
+                    relay_server: self.relay_servers[i].clone(),
                     ..Default::default()
                 });
             }
@@ -709,10 +699,3 @@ pub fn test_if_valid_server(host: &str, name: &str) -> ResultType<SocketAddr> {
     }
     res
 }
-
-fn check_relay_server(addr: &str) -> String {
-    if addr.contains("0.0.0.0") {
-        return addr.replace("0.0.0.0", &PUBLIC_IP.read().unwrap());
-    }
-    addr.to_owned()
-}