gate send actions based on whether the peer is connected.

request.go

@@ -292,6 +292,7 @@ func (m *RequestManager) Cancel(id string) error {
 	}
 
 	if req.active {
+		if m.envoy.IsConnected() {
 			go func() {
 				err := m.envoy.Send(envelope.EncloseClose(id))
 				if err != nil {
@@ -304,6 +305,7 @@ func (m *RequestManager) Cancel(id string) error {
 					m.logger.Debug("close sent", "req", req.id)
 				}
 			}()
+		}
 		req.active = false
 	}
 
@@ -324,7 +326,7 @@ func (m *RequestManager) Close() {
 	defer m.mu.Unlock()
 
 	for id, req := range m.reqs {
-		if req.active {
+		if m.envoy.IsConnected() && req.active {
 			go m.envoy.Send(envelope.EncloseClose(id))
 		}
 		req.deregisterOnce.Do(func() {
@@ -336,6 +338,9 @@ func (m *RequestManager) Close() {
 }
 
 func (m *RequestManager) activate(req *request) {
+	if !m.envoy.IsConnected() {
+		return
+	}
 	req.active = true
 	go func() {
 		err := m.envoy.Send(envelope.EncloseReq(req.id, req.filters))
@@ -477,6 +482,7 @@ func (m *RequestManager) routeEOSE(msg InboxMessage) {
 		req.active = false
 		close(req.buffer)
 		delete(m.reqs, req.id)
+		if m.envoy.IsConnected() {
 			go func() {
 				err := m.envoy.Send(envelope.EncloseClose(subID))
 				if err != nil {
@@ -491,6 +497,7 @@ func (m *RequestManager) routeEOSE(msg InboxMessage) {
 			}()
 		}
 	}
+}
 
 func (m *RequestManager) routeClosed(msg InboxMessage) {
 	subID, message, err := envelope.FindClosed(msg.Data)