linting the code

hub/connection.go

@@ -47,6 +47,7 @@ func (c *connection) write(packet conntypes.Packet) error {
 		c.pending = 0
 		c.mutex.Unlock()
 	}
+
 	return err
 }
 
@@ -89,6 +90,7 @@ func (c *connection) run() {
 			logger.Debugw("Failed response", "error", err)
 			continue
 		}
+
 		if response.Type == rpc.ProxyResponseTypeCloseExt {
 			logger.Debugw("Proxy has closed connection")
 			return

hub/connection_hub.go

@@ -50,11 +50,11 @@ func (c *connectionHub) runGC() {
 		case conn.closed():
 			logger.Debugw("Delete closed socket", "key", key)
 			delete(c.sockets, key)
-
 		case conn.idle():
 			logger.Debugw("Delete idle socket", "key", key)
 			conn.shutdown()
 			delete(c.sockets, key)
+
 			return
 		}
 	}
@@ -65,12 +65,14 @@ func (c *connectionHub) runConnectionRequest(req *connectionHubRequest) {
 
 	for key, conn := range c.sockets {
 		delete(c.sockets, key)
+
 		if !conn.closed() {
 			logger.Debugw("Choose connection",
 				"id", conn.id,
 				"remote_addr", conn.conn.RemoteAddr())
 			req.response <- conn
 			close(req.response)
+
 			return
 		}
 	}
@@ -81,6 +83,7 @@ func (c *connectionHub) runConnectionRequest(req *connectionHubRequest) {
 			"remote_addr", conn.conn.RemoteAddr())
 		req.response <- conn
 	}
+
 	close(req.response)
 }
 
@@ -93,6 +96,7 @@ func (c *connectionHub) runReturnConnection(conn *connection) {
 	c.logger.Named("return-connection").Debugw("Return connection",
 		"id", conn.id,
 		"remote_addr", conn.conn.RemoteAddr())
+
 	c.sockets[conn.id] = conn
 }
 

hub/ctx_channel.go

@@ -46,11 +46,13 @@ func (c *ctxChannel) sendBack(response *rpc.ProxyResponse) error {
 func (c *ctxChannel) Close() error {
 	c.cancel()
 	c.channel = nil
+
 	return nil
 }
 
 func newCtxChannel(ctx context.Context) *ctxChannel {
 	ctx, cancel := context.WithCancel(ctx)
+
 	return &ctxChannel{
 		channel: make(chan *rpc.ProxyResponse),
 		ctx:     ctx,

hub/hub.go

@@ -42,9 +42,9 @@ func (h *hub) Write(packet conntypes.Packet, req *protocol.TelegramRequest) erro
 
 func (h *hub) getHub(req *protocol.TelegramRequest) *connectionHub {
 	keyBuilder := strings.Builder{}
-	binary.Write(&keyBuilder, binary.LittleEndian, int16(req.ClientProtocol.DC()))
+	binary.Write(&keyBuilder, binary.LittleEndian, int16(req.ClientProtocol.DC())) // nolint: errcheck
 	keyBuilder.WriteRune('_')
-	binary.Write(&keyBuilder, binary.LittleEndian, uint8(req.ClientProtocol.ConnectionProtocol()))
+	binary.Write(&keyBuilder, binary.LittleEndian, uint8(req.ClientProtocol.ConnectionProtocol())) // nolint: errcheck
 	key := keyBuilder.String()
 
 	h.mutex.RLock()
@@ -60,6 +60,7 @@ func (h *hub) getHub(req *protocol.TelegramRequest) *connectionHub {
 			h.logger.Debugw("Create new connection hub",
 				"dc", req.ClientProtocol.DC(),
 				"protocol", req.ClientProtocol.ConnectionProtocol())
+
 			rv = newConnectionHub(h.logger.With(
 				"dc", req.ClientProtocol.DC(),
 				"protocol", req.ClientProtocol.ConnectionProtocol(),

hub/registry.go

@@ -40,5 +40,6 @@ func (r *registry) getChannel(id conntypes.ConnID) (*ctxChannel, bool) {
 	if value, ok := r.conns[string(id[:])]; ok {
 		return value, true
 	}
+
 	return nil, false
 }