Add StreamInfo for streaming types

reflection/serverreflection.go

@@ -228,7 +228,7 @@ func (s *serverReflectionServer) serviceMetadataForSymbol(name string) (interfac
 
 	// Search for stream in info.Streams.
 	for _, m := range info.Streams {
-		if m == name[pos+1:] {
+		if m.Name == name[pos+1:] {
 			found = true
 			break
 		}

server.go

@@ -245,12 +245,22 @@ func (s *Server) register(sd *ServiceDesc, ss interface{}) {
 	s.m[sd.ServiceName] = srv
 }
 
-// ServiceInfo contains unary rpc names, streaming rpc names and metadata for a service.
+// StreamInfo contains information about a streaming RPC.
+type StreamInfo struct {
+	// Name is the RPC name only, without the service name or package name.
+	Name string
+	// IsClientStream indicates whether the RPC is a client streaming RPC.
+	IsClientStream bool
+	// IsServerStream indicates whether the RPC is a server streaming RPC.
+	IsServerStream bool
+}
+
+// ServiceInfo contains unary RPC names, streaming RPC infos and metadata for a service.
 type ServiceInfo struct {
-	// Methods are unary rpc names only, without the service name or package name.
+	// Methods are unary RPC names only, without the service name or package name.
 	Methods []string
-	// Streams are streaming rpc names only, without the service name or package name.
+	// Streams are streaming RPC names and streaming types.
-	Streams []string
+	Streams []*StreamInfo
 	// Metadata is the metadata specified in ServiceDesc when registering service.
 	Metadata interface{}
 }
@@ -264,9 +274,13 @@ func (s *Server) GetServiceInfo() map[string]*ServiceInfo {
 		for m := range srv.md {
 			methods = append(methods, m)
 		}
-		streams := make([]string, 0, len(srv.sd))
+		streams := make([]*StreamInfo, 0, len(srv.sd))
-		for s := range srv.sd {
+		for s, d := range srv.sd {
-			streams = append(streams, s)
+			streams = append(streams, &StreamInfo{
+				Name:           s,
+				IsClientStream: d.ClientStreams,
+				IsServerStream: d.ServerStreams,
+			})
 		}
 
 		ret[n] = &ServiceInfo{

server_test.go

@@ -79,7 +79,7 @@ func TestGetServiceInfo(t *testing.T) {
 			{
 				StreamName:    "EmptyStream",
 				Handler:       nil,
-				ServerStreams: true,
+				ServerStreams: false,
 				ClientStreams: true,
 			},
 		},
@@ -95,9 +95,11 @@ func TestGetServiceInfo(t *testing.T) {
 			Methods: []string{
 				"EmptyCall",
 			},
-			Streams: []string{
+			Streams: []*StreamInfo{&StreamInfo{
-				"EmptyStream",
+				Name:           "EmptyStream",
-			},
+				IsClientStream: true,
+				IsServerStream: false,
+			}},
 			Metadata: []int{0, 2, 1, 3},
 		},
 	}