public void InEvent()
{
// If still handshaking, receive and process the greeting message.
if (m_handshaking)
{
if (!Handshake())
{
return;
}
}
Debug.Assert(m_decoder != null);
bool disconnection = false;
int processed;
// If there's no data to process in the buffer...
if (m_insize == 0)
{
// Retrieve the buffer and read as much data as possible.
// Note that buffer can be arbitrarily large. However, we assume
// the underlying TCP layer has fixed buffer size and thus the
// number of bytes read will be always limited.
m_decoder.GetBuffer(ref m_inpos, ref m_insize);
m_insize = Read(m_inpos, m_insize);
// Check whether the peer has closed the connection.
if (m_insize == -1)
{
m_insize = 0;
disconnection = true;
}
}
if (m_options.RawSocket)
{
if (m_insize == 0 || !m_decoder.MessageReadySize(m_insize))
{
processed = 0;
}
else
{
processed = m_decoder.ProcessBuffer(m_inpos, m_insize);
}
}
else
{
// Push the data to the decoder.
processed = m_decoder.ProcessBuffer(m_inpos, m_insize);
}
if (processed == -1)
{
disconnection = true;
}
else
{
// Stop polling for input if we got stuck.
if (processed < m_insize)
{
m_ioObject.ResetPollin(m_handle);
}
m_inpos.AdvanceOffset(processed);
m_insize -= processed;
}
// Flush all messages the decoder may have produced.
m_session.Flush();
// An input error has occurred. If the last decoded message
// has already been accepted, we terminate the engine immediately.
// Otherwise, we stop waiting for socket events and postpone
// the termination until after the message is accepted.
if (disconnection)
{
if (m_decoder.Stalled())
{
m_ioObject.RmFd(m_handle);
m_inputError = true;
}
else
{
Error();
}
}
}
public void InEvent()
{
if (m_pendingBytes > 0)
{
return;
}
// Get new batch of data.
// Note the workaround made not to break strict-aliasing rules.
data.Reset();
int received = 0;
try
{
received = m_handle.Receive((byte[])data);
}
catch (SocketException ex)
{
if (ex.SocketErrorCode == SocketError.WouldBlock)
{
return;
//break;
}
else
{
m_joined = false;
Error();
return;
}
}
// No data to process. This may happen if the packet received is
// neither ODATA nor ODATA.
if (received == 0)
{
return;
}
// Read the offset of the fist message in the current packet.
Debug.Assert(received >= sizeof(ushort));
ushort offset = data.GetUnsignedShort(m_options.Endian, 0);
data.AdvanceOffset(sizeof(ushort));
received -= sizeof(ushort);
// Join the stream if needed.
if (!m_joined)
{
// There is no beginning of the message in current packet.
// Ignore the data.
if (offset == 0xffff)
{
return;
}
Debug.Assert(offset <= received);
Debug.Assert(m_decoder == null);
// We have to move data to the begining of the first message.
data.AdvanceOffset(offset);
received -= offset;
// Mark the stream as joined.
m_joined = true;
// Create and connect decoder for the peer.
m_decoder = new Decoder(0, m_options.Maxmsgsize, m_options.Endian);
m_decoder.SetMsgSink(m_session);
}
// Push all the data to the decoder.
int processed = m_decoder.ProcessBuffer(data, received);
if (processed < received)
{
// Save some state so we can resume the decoding process later.
m_pendingBytes = received - processed;
m_pendingData = new ByteArraySegment(data, processed);
// Stop polling.
m_ioObject.ResetPollin(m_handle);
return;
}
m_session.Flush();
}
