diff --git a/rtmp/rtmp.go b/rtmp/rtmp.go
index 02811cb8..752b8beb 100644
--- a/rtmp/rtmp.go
+++ b/rtmp/rtmp.go
@@ -355,7 +355,7 @@ func (s *session) Write(data []byte) (int, error) {
 		return 0, Err(3)
 	}
 	// TODO: port this
-	if C.RTMP_IsConnected(s.rtmp) == 0 {
+	if rtmpIsConnected(s.rtmp) == 0 {
 		return 0, Err(1)
 	}
 	//if C.RTMP_Write(s.rtmp,(*C.char)(unsafe.Pointer(&data[0])),C.int(len(data))) == 0 {
@@ -365,6 +365,13 @@ func (s *session) Write(data []byte) (int, error) {
 	return len(data), nil
 }
 
+func rtmpIsConnected(r *C.RTMP) int {
+	if r.m_sb.sb_socket != -1 {
+		return 1
+	}
+	return 0
+}
+
 func startSession(rtmp *C.RTMP, u string, timeout uint32) (*C.RTMP, error) {
 	connect_timeout := C.int(timeout)
 	rtmp = rtmpAlloc()
@@ -489,7 +496,7 @@ func rtmpClose(r *C.RTMP) {
 func closeInternal(r *C.RTMP, reconnect int32) {
 	var i int32
 
-	if C.RTMP_IsConnected(r) != 0 {
+	if rtmpIsConnected(r) != 0 {
 		if r.m_stream_id > 0 {
 			i = int32(r.m_stream_id)
 			if r.Link.protocol&RTMP_FEATURE_WRITE != 0 {
@@ -691,7 +698,7 @@ func rtmpConnectStream(r *C.RTMP, seekTime int32) int {
 	r.m_mediaChannel = 0
 
 	// TODO: port is connected and read packet
-	for r.m_bPlaying == 0 && C.RTMP_IsConnected(r) != 0 &&
+	for r.m_bPlaying == 0 && rtmpIsConnected(r) != 0 &&
 		C.RTMP_ReadPacket(r, &packet) != 0 {
 
 		// TODO: port is ready