Corrected a hang in UDP and TCP mode when the server is behind a firewall that doesn't allow outbound traffic and reverse-mode is requested

Author: flan

src/stream/tcp.rs

@@ -133,7 +133,13 @@ pub mod receiver {
             )?;
             let mut events = Events::with_capacity(1);
 
+            let start = Instant::now();
+            
             while self.active {
+                if start.elapsed() >= RECEIVE_TIMEOUT {
+                    return Err(Box::new(simple_error::simple_error!("TCP listening for stream {} timed out", self.stream_idx)));
+                }
+                
                 poll.poll(&mut events, Some(POLL_TIMEOUT))?;
                 for event in events.iter() {
                     match event.token() {

src/stream/udp.rs

@@ -282,8 +282,7 @@ pub mod receiver {
                             }
                         },
                         Err(e) if e.kind() == std::io::ErrorKind::WouldBlock => { //receive timeout
-                            //break;
-                            continue;
+                            break;
                         },
                         Err(e) => {
                             return Some(Err(Box::new(e)));