Fixed crash when client packet failed to decode

native/serverconnection/src/connection/ServerConnection.cpp

@@ -304,6 +304,8 @@ NAN_METHOD(ServerConnection::connect) {
 	}
 
 	this->socket->on_data = [&](const pipes::buffer_view& buffer) { this->protocol_handler->progress_packet(buffer); };
+    this->socket->on_fatal_error = [&](int, int) { this->close_connection(); };
+
 	if(teamspeak->IsBoolean() && teamspeak->BooleanValue(info.GetIsolate()))
 		this->protocol_handler->server_type = server_type::TEAMSPEAK;
 	this->protocol_handler->connect();
@@ -603,6 +605,7 @@ void ServerConnection::close_connection() {
 	if(this->protocol_handler)
 		this->protocol_handler->do_close_connection();
 	this->socket = nullptr;
+
 	this->call_disconnect_result.call(0, true);
 }
 

native/serverconnection/src/connection/Socket.cpp

@@ -83,15 +83,8 @@ void UDPSocket::finalize() {
 	lock.unlock();
 
 	assert(this_thread::get_id() != this->_io_thread.get_id());
-	if(event_read)
+	if(event_read) event_del_block(event_read);
-		event_del_block(event_read);
+	if(event_write) event_del_block(event_write);
-	if(event_write)
-		event_del_block(event_write);
-
-	if(event_write)
-		event_del(event_write);
-	if(event_read)
-		event_del(event_read);
 
 	if(io_base) {
 		timeval seconds{1, 0};
@@ -136,7 +129,7 @@ void UDPSocket::io_execute() {
 }
 void UDPSocket::callback_read(evutil_socket_t fd) {
 	sockaddr source_address{};
-	socklen_t source_address_length = sizeof(sockaddr);
+	socklen_t source_address_length;
 
 	ssize_t read_length = -1;
 	size_t buffer_length = 1600; /* IPv6 MTU is ~1.5k */
@@ -160,8 +153,15 @@ void UDPSocket::callback_read(evutil_socket_t fd) {
             if(errno == EAGAIN)
 				break;
 #endif
-
             logger::warn(category::socket, tr("Failed to receive data: {}"), error);
+            if(auto callback{this->on_fatal_error}; callback)
+                callback(1, error);
+
+            {
+                std::lock_guard lock{this->io_lock};
+                if(this->event_read)
+                    event_del_noblock(this->event_read);
+            }
 			break; /* this should never happen! */
 		}
 
@@ -183,7 +183,12 @@ void UDPSocket::callback_write(evutil_socket_t fd) {
 
 	auto written = sendto(fd, buffer.data_ptr<char>(), (int) buffer.length(), MSG_DONTWAIT, (sockaddr*) &this->_remote_address, sizeof(this->_remote_address));
 	if(written != buffer.length()) {
-		if(errno == EAGAIN) {
+        int error;
+#ifdef WIN32
+        if(error = WSAGetLastError(); error == WSAEWOULDBLOCK) {
+#else
+        if(error = errno; errno == EAGAIN) {
+#endif
 			lock.lock();
 			this->write_queue.push_front(buffer);
 			if(this->event_write)
@@ -191,6 +196,9 @@ void UDPSocket::callback_write(evutil_socket_t fd) {
 			return;
 		}
 
+        logger::warn(category::socket, tr("Failed to send data: {}"), error);
+        if(auto callback{this->on_fatal_error}; callback)
+            callback(2, error);
 		return; /* this should never happen! */
 	} else {
         //logger::trace(category::socket, tr("Wrote {} bytes"), buffer.length());

native/serverconnection/src/connection/Socket.h

@@ -15,11 +15,10 @@
     #include <WinSock2.h>
 #endif
 
-namespace tc {
+namespace tc::connection {
-	namespace connection {
     class UDPSocket {
         public:
-				UDPSocket(const sockaddr_storage& /* target */);
+            explicit UDPSocket(const sockaddr_storage& /* target */);
             ~UDPSocket();
 
             const sockaddr_storage& remote_address() { return this->_remote_address; }
@@ -29,7 +28,9 @@ namespace tc {
 
             void send_message(const pipes::buffer_view& /* message */);
 
+            /* Callbacks are called within the IO loop. Do not call any other functions except send_message! */
             std::function<void(const pipes::buffer_view& /* message */)> on_data;
+            std::function<void(int /* error code */, int /* description */)> on_fatal_error;
 
             const std::thread& io_thread() { return this->_io_thread; }
         private:
@@ -55,4 +56,3 @@ namespace tc {
             std::deque<pipes::buffer> write_queue;
     };
 }
-}

native/serverconnection/src/connection/audio/VoiceClient.cpp

@@ -558,9 +558,13 @@ void VoiceClient::event_execute(const std::chrono::system_clock::time_point &sch
 
 					//TODO: Use statically allocated buffer?
 					auto decoded = this->decode_buffer(audio_codec.codec, replay_head->buffer);
+					if(!decoded) {
+                        log_warn(category::audio, tr("Failed to decode buffer for client {} (nullptr). Dropping buffer."), this->_client_id, error);
+					} else {
                         this->output_source->enqueue_samples(decoded->sample_data, decoded->sample_size);
                         this->set_state(state::playing);
 					}
+				}
 
 				local_last_pid = replay_head->packet_id;
 				replay_head = replay_head->next;

native/serverconnection/test/js/main.ts

@@ -59,11 +59,9 @@ connection.callback_disconnect = reason => {
 const do_connect = () => {
     connection.connect({
         timeout: 5000,
-        remote_host: "51.255.107.151",
+        remote_port: 9987,
-        remote_port: 31515,
-        //remote_port: 9987,
         //remote_host: "188.40.240.20", /* twerion */
-        //remote_host: "localhost",
+        remote_host: "127.0.0.1",
         //remote_host: "ts.teaspeak.de",
         //remote_host: "51.68.181.92",
         //remote_host: "94.130.236.135",
@@ -100,19 +98,11 @@ const do_connect = () => {
                         return_code:91
                     }
                 ], []);
-
-                /*
-                consumer.callback_data = buffer => {
-                    console.log("Sending voice data");
-                    connection.send_voice_data_raw(buffer, consumer.channels, consumer.sample_rate, true);
-                    //stream.write_data_rated(buffer.buffer, true, consumer.sample_rate);
-                };
-                 */
             }
         },
 
         identity_key: "MG4DAgeAAgEgAiBC9JsqB1am6vowj2obomMyxm1GLk8qyRoxpBkAdiVYxwIgWksaSk7eyVQovZwPZBuiYHARz/xQD5zBUBK6e63V7hICIQCZ2glHe3kV62iIRKpkV2lzZGZtfBPRMbwIcU9aE1EVsg==",
-        teamspeak: true /* used here to speed up the handsahke process :) */
+        teamspeak: true /* used here to speed up the handshake process :) */
     });
 
     connection.callback_voice_data = (buffer, client_id, codec_id, flag_head, packet_id) => {
@@ -120,9 +110,19 @@ const do_connect = () => {
         connection.send_voice_data(buffer, codec_id, flag_head);
     };
 
+    connection.callback_disconnect = error => {
+        console.log("Disconnect: %s", error);
+    };
+
     connection.callback_command = (command, arguments1, switches) => {
         console.log("Command: %s: %0", command, arguments1);
+        if(command === "channellistfinished") {
+            setInterval(() => {
+                console.log("XXX");
+                connection.send_command("channelcreate", [{"channel_name": Math.random() + " :D"}], []);
+            }, 10);
         }
+    };
 
     connection._voice_connection.register_client(7);
 };