Enable RPCX gateway

socket.go

@@ -46,6 +46,7 @@ var (
 	ErrDFUInvalidFile    = errors.New("provided file is invalid for given upgrade type")
 	ErrDFUNotEnoughFiles = errors.New("not enough files provided for given upgrade type")
 	ErrDFUInvalidUpgType = errors.New("invalid upgrade type")
+	ErrRPCXUsingGateway  = errors.New("bidirectional requests are unsupported over gateway")
 )
 
 type DoneMap map[string]chan struct{}
@@ -116,7 +117,7 @@ func startSocket(dev *infinitime.Device) error {
 		return err
 	}
 
-	go srv.ServeListener("unix", ln)
+	go srv.ServeListener("tcp", ln)
 
 	// Log socket start
 	log.Info().Str("path", k.String("socket.path")).Msg("Started control socket")
@@ -136,7 +137,12 @@ func (i *ITD) HeartRate(_ context.Context, _ none, out *uint8) error {
 }
 
 func (i *ITD) WatchHeartRate(ctx context.Context, _ none, out *string) error {
-	clientConn := ctx.Value(server.RemoteConnContextKey).(net.Conn)
+	// Get client's connection
+	clientConn, ok := ctx.Value(server.RemoteConnContextKey).(net.Conn)
+	// If user is using gateway, the client connection will not be available
+	if !ok {
+		return ErrRPCXUsingGateway
+	}
 
 	heartRateCh, cancel, err := i.dev.WatchHeartRate()
 	if err != nil {
@@ -178,7 +184,12 @@ func (i *ITD) BatteryLevel(_ context.Context, _ none, out *uint8) error {
 }
 
 func (i *ITD) WatchBatteryLevel(ctx context.Context, _ none, out *string) error {
-	clientConn := ctx.Value(server.RemoteConnContextKey).(net.Conn)
+	// Get client's connection
+	clientConn, ok := ctx.Value(server.RemoteConnContextKey).(net.Conn)
+	// If user is using gateway, the client connection will not be available
+	if !ok {
+		return ErrRPCXUsingGateway
+	}
 
 	battLevelCh, cancel, err := i.dev.WatchBatteryLevel()
 	if err != nil {
@@ -220,7 +231,12 @@ func (i *ITD) Motion(_ context.Context, _ none, out *infinitime.MotionValues) er
 }
 
 func (i *ITD) WatchMotion(ctx context.Context, _ none, out *string) error {
-	clientConn := ctx.Value(server.RemoteConnContextKey).(net.Conn)
+	// Get client's connection
+	clientConn, ok := ctx.Value(server.RemoteConnContextKey).(net.Conn)
+	// If user is using gateway, the client connection will not be available
+	if !ok {
+		return ErrRPCXUsingGateway
+	}
 
 	motionValsCh, cancel, err := i.dev.WatchMotion()
 	if err != nil {
@@ -262,7 +278,12 @@ func (i *ITD) StepCount(_ context.Context, _ none, out *uint32) error {
 }
 
 func (i *ITD) WatchStepCount(ctx context.Context, _ none, out *string) error {
-	clientConn := ctx.Value(server.RemoteConnContextKey).(net.Conn)
+	// Get client's connection
+	clientConn, ok := ctx.Value(server.RemoteConnContextKey).(net.Conn)
+	// If user is using gateway, the client connection will not be available
+	if !ok {
+		return ErrRPCXUsingGateway
+	}
 
 	stepCountCh, cancel, err := i.dev.WatchStepCount()
 	if err != nil {
@@ -365,8 +386,10 @@ func (i *ITD) FirmwareUpgrade(ctx context.Context, reqData api.FwUpgradeData, ou
 	id := uuid.New().String()
 	*out = id
 
-	clientConn := ctx.Value(server.RemoteConnContextKey).(net.Conn)
+	// Get client's connection
-
+	clientConn, ok := ctx.Value(server.RemoteConnContextKey).(net.Conn)
+	// If user is using gateway, the client connection will not be available
+	if ok {
 		go func() {
 			// For every progress event
 			for event := range i.dev.DFU.Progress() {
@@ -382,6 +405,7 @@ func (i *ITD) FirmwareUpgrade(ctx context.Context, reqData api.FwUpgradeData, ou
 			firmwareUpdating = false
 			i.srv.SendMessage(clientConn, id, "Done", nil, nil)
 		}()
+	}
 
 	// Set firmwareUpdating
 	firmwareUpdating = true
@@ -463,7 +487,6 @@ func (fs *FS) ReadDir(_ context.Context, dir string, out *[]api.FileInfo) error
 
 func (fs *FS) Upload(ctx context.Context, paths [2]string, out *string) error {
 	fs.updateFS()
-	clientConn := ctx.Value(server.RemoteConnContextKey).(net.Conn)
 
 	localFile, err := os.Open(paths[1])
 	if err != nil {
@@ -483,6 +506,10 @@ func (fs *FS) Upload(ctx context.Context, paths [2]string, out *string) error {
 	id := uuid.New().String()
 	*out = id
 
+	// Get client's connection
+	clientConn, ok := ctx.Value(server.RemoteConnContextKey).(net.Conn)
+	// If user is using gateway, the client connection will not be available
+	if ok {
 		go func() {
 			// For every progress event
 			for sent := range remoteFile.Progress() {
@@ -500,6 +527,7 @@ func (fs *FS) Upload(ctx context.Context, paths [2]string, out *string) error {
 
 			fs.srv.SendMessage(clientConn, id, "Done", nil, nil)
 		}()
+	}
 
 	go func() {
 		io.Copy(remoteFile, localFile)
@@ -512,7 +540,6 @@ func (fs *FS) Upload(ctx context.Context, paths [2]string, out *string) error {
 
 func (fs *FS) Download(ctx context.Context, paths [2]string, out *string) error {
 	fs.updateFS()
-	clientConn := ctx.Value(server.RemoteConnContextKey).(net.Conn)
 	
 	localFile, err := os.Create(paths[0])
 	if err != nil {
@@ -527,6 +554,10 @@ func (fs *FS) Download(ctx context.Context, paths [2]string, out *string) error
 	id := uuid.New().String()
 	*out = id
 	
+	// Get client's connection
+	clientConn, ok := ctx.Value(server.RemoteConnContextKey).(net.Conn)
+	// If user is using gateway, the client connection will not be available
+	if ok {
 		go func() {
 			// For every progress event
 			for rcvd := range remoteFile.Progress() {
@@ -546,6 +577,7 @@ func (fs *FS) Download(ctx context.Context, paths [2]string, out *string) error
 			localFile.Close()
 			remoteFile.Close()
 		}()
+	}
 
 	go io.Copy(localFile, remoteFile)