read "not string" data not work

[ngocvung90]

I'm using socket PCL for receive .3gp data (in byte array) using TCP socket client (server is an native android app). Client already received data by using
int bytesRec = client.ReadStream.Read(buffer, 0, buffer.Length);
After read end of stream (byteRec = 0), Read function still run continuously, so I cannot received new package.
What should I do now.
Thank you !