dropping messages if there are no clients connected

server/src/quic_server.rs

@@ -7,6 +7,7 @@ use super::quiche_server_loop::server_loop;
 pub struct QuicServer {
     pub data_channel_sender: mio_channel::Sender<ChannelMessage>,
     pub quic_plugin_config: ConfigQuicPlugin,
+    _server_loop_jh: std::thread::JoinHandle<()>,
 }
 
 impl Debug for QuicServer {
@@ -38,6 +39,7 @@ impl QuicServer {
         Ok(QuicServer {
             data_channel_sender,
             quic_plugin_config: config,
+            _server_loop_jh,
         })
     }
 

server/src/quiche_server_loop.rs

@@ -230,6 +230,12 @@ pub fn server_loop(
         }
 
         if events.iter().any(|x| x.token() == Token(1)) {
+            if clients.is_empty() {
+                // no clients, no need to process messages
+                while message_send_queue.try_recv().is_ok() {
+                    // do nothing / clearing the queue
+                }
+            }
             // check if streams are already full, avoid depiling messages if it is full
             if !clients.iter().all(|x| {
                 if x.1.partial_responses.is_empty() {