Implement WebSocket clean close detection.

modules/websocket/emws_client.cpp

@@ -57,7 +57,7 @@ EMSCRIPTEN_KEEPALIVE void _esws_on_close(void *obj, int code, char *reason, int
 	EMWSClient *client = static_cast<EMWSClient *>(obj);
 	client->_on_close_request(code, String(reason));
 	client->_is_connecting = false;
-	client->_on_disconnect();
+	client->_on_disconnect(was_clean != 0);
 }
 }
 
@@ -146,7 +146,7 @@ Error EMWSClient::connect_to_host(String p_host, String p_path, uint16_t p_port,
 			if (!Module.IDHandler.has($0))
 				return; // Godot Object is gone!
 			var was_clean = 0;
-			if (event.was_clean)
+			if (event.wasClean)
 				was_clean = 1;
 			ccall("_esws_on_close",
 				"void",

modules/websocket/emws_peer.cpp

@@ -140,7 +140,7 @@ void EMWSPeer::close(int p_code, String p_reason) {
 			var reason = UTF8ToString($2);
 			sock.close(code, reason);
 			Module.IDHandler.remove($0);
-		}, peer_sock, p_code);
+		}, peer_sock, p_code, p_reason.utf8().get_data());
 		/* clang-format on */
 	}
 	peer_sock = -1;

modules/websocket/lws_client.cpp

@@ -129,6 +129,7 @@ int LWSClient::_handle_cb(struct lws *wsi, enum lws_callback_reasons reason, voi
 			peer->set_wsi(wsi);
 			peer_data->peer_id = 0;
 			peer_data->force_close = false;
+			peer_data->clean_close = false;
 			_on_connect(lws_get_protocol(wsi)->name);
 			break;
 
@@ -140,6 +141,7 @@ int LWSClient::_handle_cb(struct lws *wsi, enum lws_callback_reasons reason, voi
 		case LWS_CALLBACK_WS_PEER_INITIATED_CLOSE: {
 			int code;
 			String reason = peer->get_close_reason(in, len, code);
+			peer_data->clean_close = true;
 			_on_close_request(code, reason);
 			return 0;
 		}
@@ -147,7 +149,7 @@ int LWSClient::_handle_cb(struct lws *wsi, enum lws_callback_reasons reason, voi
 		case LWS_CALLBACK_CLIENT_CLOSED:
 			peer->close();
 			destroy_context();
-			_on_disconnect();
+			_on_disconnect(peer_data->clean_close);
 			return 0; // We can end here
 
 		case LWS_CALLBACK_CLIENT_RECEIVE:

modules/websocket/lws_peer.cpp

@@ -216,6 +216,7 @@ void LWSPeer::close(int p_code, String p_reason) {
 		close_reason = p_reason;
 		PeerData *data = ((PeerData *)lws_wsi_user(wsi));
 		data->force_close = true;
+		data->clean_close = true;
 		lws_callback_on_writable(wsi); // Notify that we want to disconnect
 	} else {
 		close_code = -1;

modules/websocket/lws_peer.h

@@ -60,6 +60,7 @@ public:
 	struct PeerData {
 		uint32_t peer_id;
 		bool force_close;
+		bool clean_close;
 	};
 
 	RingBuffer<uint8_t> rbw;

modules/websocket/lws_server.cpp

@@ -90,6 +90,7 @@ int LWSServer::_handle_cb(struct lws *wsi, enum lws_callback_reasons reason, voi
 
 			peer_data->peer_id = id;
 			peer_data->force_close = false;
+			peer_data->clean_close = false;
 			_on_connect(id, lws_get_protocol(wsi)->name);
 			break;
 		}
@@ -103,6 +104,7 @@ int LWSServer::_handle_cb(struct lws *wsi, enum lws_callback_reasons reason, voi
 				int code;
 				Ref<LWSPeer> peer = _peer_map[id];
 				String reason = peer->get_close_reason(in, len, code);
+				peer_data->clean_close = true;
 				_on_close_request(id, code, reason);
 			}
 			return 0;
@@ -112,11 +114,12 @@ int LWSServer::_handle_cb(struct lws *wsi, enum lws_callback_reasons reason, voi
 			if (peer_data == NULL)
 				return 0;
 			int32_t id = peer_data->peer_id;
+			bool clean = peer_data->clean_close;
 			if (_peer_map.has(id)) {
 				_peer_map[id]->close();
 				_peer_map.erase(id);
 			}
-			_on_disconnect(id);
+			_on_disconnect(id, clean);
 			return 0; // we can end here
 		}
 

modules/websocket/websocket_client.cpp

@@ -112,12 +112,12 @@ void WebSocketClient::_on_close_request(int p_code, String p_reason) {
 	emit_signal("server_close_request", p_code, p_reason);
 }
 
-void WebSocketClient::_on_disconnect() {
+void WebSocketClient::_on_disconnect(bool p_was_clean) {
 
 	if (_is_multiplayer) {
 		emit_signal("connection_failed");
 	} else {
-		emit_signal("connection_closed");
+		emit_signal("connection_closed", p_was_clean);
 	}
 }
 
@@ -141,6 +141,6 @@ void WebSocketClient::_bind_methods() {
 	ADD_SIGNAL(MethodInfo("data_received"));
 	ADD_SIGNAL(MethodInfo("connection_established", PropertyInfo(Variant::STRING, "protocol")));
 	ADD_SIGNAL(MethodInfo("server_close_request", PropertyInfo(Variant::INT, "code"), PropertyInfo(Variant::STRING, "reason")));
-	ADD_SIGNAL(MethodInfo("connection_closed"));
+	ADD_SIGNAL(MethodInfo("connection_closed", PropertyInfo(Variant::BOOL, "was_clean_close")));
 	ADD_SIGNAL(MethodInfo("connection_error"));
 }

modules/websocket/websocket_client.h

@@ -63,7 +63,7 @@ public:
 	void _on_peer_packet();
 	void _on_connect(String p_protocol);
 	void _on_close_request(int p_code, String p_reason);
-	void _on_disconnect();
+	void _on_disconnect(bool p_was_clean);
 	void _on_error();
 
 	WebSocketClient();

modules/websocket/websocket_server.cpp

@@ -49,7 +49,7 @@ void WebSocketServer::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("disconnect_peer", "id", "code", "reason"), &WebSocketServer::disconnect_peer, DEFVAL(1000), DEFVAL(""));
 
 	ADD_SIGNAL(MethodInfo("client_close_request", PropertyInfo(Variant::INT, "id"), PropertyInfo(Variant::INT, "code"), PropertyInfo(Variant::STRING, "reason")));
-	ADD_SIGNAL(MethodInfo("client_disconnected", PropertyInfo(Variant::INT, "id")));
+	ADD_SIGNAL(MethodInfo("client_disconnected", PropertyInfo(Variant::INT, "id"), PropertyInfo(Variant::BOOL, "was_clean_close")));
 	ADD_SIGNAL(MethodInfo("client_connected", PropertyInfo(Variant::INT, "id"), PropertyInfo(Variant::STRING, "protocol")));
 	ADD_SIGNAL(MethodInfo("data_received", PropertyInfo(Variant::INT, "id")));
 }
@@ -86,14 +86,14 @@ void WebSocketServer::_on_connect(int32_t p_peer_id, String p_protocol) {
 	}
 }
 
-void WebSocketServer::_on_disconnect(int32_t p_peer_id) {
+void WebSocketServer::_on_disconnect(int32_t p_peer_id, bool p_was_clean) {
 
 	if (_is_multiplayer) {
 		// Send delete to clients
 		_send_del(p_peer_id);
 		emit_signal("peer_disconnected", p_peer_id);
 	} else {
-		emit_signal("client_disconnected", p_peer_id);
+		emit_signal("client_disconnected", p_peer_id, p_was_clean);
 	}
 }
 

modules/websocket/websocket_server.h

@@ -58,7 +58,7 @@ public:
 
 	void _on_peer_packet(int32_t p_peer_id);
 	void _on_connect(int32_t p_peer_id, String p_protocol);
-	void _on_disconnect(int32_t p_peer_id);
+	void _on_disconnect(int32_t p_peer_id, bool p_was_clean);
 	void _on_close_request(int32_t p_peer_id, int p_code, String p_reason);
 
 	WebSocketServer();