private void BeginSending()
{
// If write buffer is empty, try to read new data from the encoder.
if (m_writeSize == 0)
{
// First two bytes (sizeof uint16_t) are used to store message
// offset in following steps. Note that by passing our buffer to
// the get data function we prevent it from returning its own buffer.
ushort offset = 0xffff;
var buffer = new ByteArraySegment(m_outBuffer, sizeof(ushort));
int bufferSize = m_outBufferSize - sizeof(ushort);
int bytes = m_encoder.Encode(ref buffer, bufferSize);
while (bytes < bufferSize)
{
if (!m_moreFlag && offset == 0xffff)
{
offset = (ushort)bytes;
}
Msg msg = new Msg();
if (m_session.PullMsg(ref msg) != PullMsgResult.Ok)
{
break;
}
m_moreFlag = msg.HasMore;
m_encoder.LoadMsg(ref msg);
buffer = buffer + bytes;
var n = m_encoder.Encode(ref buffer, bufferSize - bytes);
bytes += n;
}
// If there are no data to write stop polling for output.
if (bytes == 0)
{
m_state = State.ActiveSendingIdle;
return;
}
// Put offset information in the buffer.
m_writeSize = bytes + sizeof(ushort);
m_outBuffer.PutUnsignedShort(m_options.Endian, offset, 0);
}
try
{
m_socket.Send((byte[])m_outBuffer, m_outBuffer.Offset, m_writeSize, SocketFlags.None);
}
catch (SocketException ex)
{
if (ex.SocketErrorCode == SocketError.ConnectionReset)
{
Error();
}
else
{
throw NetMQException.Create(ex.SocketErrorCode, ex);
}
}
}
