func sockReadMessage(buf *streambuf.Buffer, in io.Reader) (*message, error) {
for {
// try parse message from buffered data
msg, err := readMessage(buf)
if msg != nil || (err != nil && err != streambuf.ErrNoMoreBytes) {
return msg, err
}
// read next bytes from socket if incomplete message in buffer
buffer := make([]byte, 1024)
n, err := in.Read(buffer)
if err != nil {
return nil, err
}
buf.Write(buffer[:n])
}
}