remove global error tracking (#1777)

Co-authored-by: Asim Aslam <asim@aslam.me>

server/rpc_server.go

@@ -131,8 +131,6 @@ func (s *rpcServer) HandleEvent(e broker.Event) error {
 
 // ServeConn serves a single connection
 func (s *rpcServer) ServeConn(sock transport.Socket) {
-	// global error tracking
-	var gerr error
 	// streams are multiplexed on Micro-Stream or Micro-Id header
 	pool := socket.NewPool()
 
@@ -147,11 +145,8 @@ func (s *rpcServer) ServeConn(sock transport.Socket) {
 	}
 
 	defer func() {
-		// only wait if there's no error
-		if gerr == nil {
-			// wait till done
-			wg.Wait()
-		}
+		// wait till done
+		wg.Wait()
 
 		// close all the sockets for this connection
 		pool.Close()
@@ -172,10 +167,6 @@ func (s *rpcServer) ServeConn(sock transport.Socket) {
 		var msg transport.Message
 		// process inbound messages one at a time
 		if err := sock.Recv(&msg); err != nil {
-			// set a global error and return
-			// we're saying we essentially can't
-			// use the socket anymore
-			gerr = err
 			return
 		}
 
@@ -193,7 +184,6 @@ func (s *rpcServer) ServeConn(sock transport.Socket) {
 			if err := sock.Send(&transport.Message{
 				Header: msg.Header,
 			}); err != nil {
-				gerr = err
 				break
 			}
 			// we're done
@@ -303,14 +293,12 @@ func (s *rpcServer) ServeConn(sock transport.Socket) {
 			// try get a new codec
 			if cf, err = s.newCodec(ct); err != nil {
 				// no codec found so send back an error
-				if err := sock.Send(&transport.Message{
+				sock.Send(&transport.Message{
 					Header: map[string]string{
 						"Content-Type": "text/plain",
 					},
 					Body: []byte(err.Error()),
-				}); err != nil {
-					gerr = err
-				}
+				})
 
 				// release the socket we just created
 				pool.Release(psock)