StartWrite(IList <ArraySegment <byte> > buffer, int offset, AsyncCallback callback, object state, out bool completed)
{
Debug.Assert(_fd != null);
Debug.Assert(_writeEventArgs != null);
Debug.Assert(offset == 0);
bool completedSynchronously;
if (!_incoming && _state < StateConnected)
{
Debug.Assert(_addr != null);
completed = false;
if (_sourceAddr != null)
{
_fd.Bind(_sourceAddr);
}
_writeEventArgs.UserToken = state;
return(!_fd.ConnectAsync(_writeEventArgs));
}
// The caller is supposed to check the send size before by calling checkSendSize
Debug.Assert(Math.Min(MaxPacketSize, _sndSize - UdpOverhead) >= buffer.GetByteCount());
try
{
_writeCallback = callback;
if (_state == StateConnected)
{
_writeEventArgs.UserToken = state;
_writeEventArgs.BufferList = buffer;
completedSynchronously = !_fd.SendAsync(_writeEventArgs);
}
else
{
if (_peerAddr == null)
{
throw new Ice.SocketException();
}
_writeEventArgs.RemoteEndPoint = _peerAddr;
_writeEventArgs.UserToken = state;
ArraySegment <byte> data = buffer.GetSegment(0, buffer.GetByteCount());
_writeEventArgs.SetBuffer(data.Array, 0, data.Count);
completedSynchronously = !_fd.SendToAsync(_writeEventArgs);
}
}
catch (System.Net.Sockets.SocketException ex)
{
if (Network.ConnectionLost(ex))
{
throw new Ice.ConnectionLostException(ex);
}
else
{
throw new Ice.SocketException(ex);
}
}
completed = true;
return(completedSynchronously);
}
/// <summary>Finish an asynchronous write operation, the offset is increase with the
/// number of bytes actually wrote to the socket.</summary>
/// <param name="buffer">The buffer of data to write to the socket.</param>
/// <param name="offset">The offset at what the write operation starts, the offset is increase
/// with the number of bytes successfully wrote to the socket.</param>
public void FinishWrite(IList <ArraySegment <byte> > buffer, ref int offset)
{
if (_writeEventArgs.BufferList != null)
{
_writeEventArgs.BufferList.Clear();
_writeEventArgs.BufferList = null;
}
if (_fd == null) // Transceiver was closed
{
int remaining = buffer.GetByteCount() - offset;
if (remaining <= _maxSendPacketSize)
{
offset += remaining; // Assume all the data was sent for at-most-once semantics.
}
return;
}
Debug.Assert(_fd != null && _writeEventArgs != null);
if (_state < StateConnected && _state != StateProxyWrite)
{
return;
}
try
{
if (_writeEventArgs.SocketError != SocketError.Success)
{
throw new SocketException((int)_writeEventArgs.SocketError);
}
int ret = _writeEventArgs.BytesTransferred;
if (ret == 0)
{
throw new ConnectionLostException();
}
Debug.Assert(ret > 0);
if (_state == StateProxyWrite)
{
Debug.Assert(_proxy != null);
_state = ToState(_proxy.EndWrite(buffer, ret));
}
offset += ret;
}
catch (SocketException ex)
{
if (Network.ConnectionLost(ex))
{
throw new ConnectionLostException(ex);
}
throw new TransportException(ex);
}
catch (ObjectDisposedException ex)
{
throw new ConnectionLostException(ex);
}
}
private int Write(ByteBuffer buf)
{
Debug.Assert(_fd != null);
if (AssemblyUtil.IsMono)
{
//
// Mono on Android and iOS don't support the use of synchronous socket
// operations on a non-blocking socket. Returning 0 here forces the caller to schedule
// an asynchronous operation.
//
return(0);
}
int packetSize = buf.Remaining();
if (AssemblyUtil.IsWindows)
{
//
// On Windows, limiting the buffer size is important to prevent
// poor throughput performances when transfering large amount of
// data. See Microsoft KB article KB823764.
//
if (_maxSendPacketSize > 0 && packetSize > _maxSendPacketSize / 2)
{
packetSize = _maxSendPacketSize / 2;
}
}
int sent = 0;
while (buf.HasRemaining())
{
try
{
int ret = _fd.Send(buf.RawBytes(), buf.Position(), packetSize, SocketFlags.None);
Debug.Assert(ret > 0);
sent += ret;
buf.Position(buf.Position() + ret);
if (packetSize > buf.Remaining())
{
packetSize = buf.Remaining();
}
}
catch (SocketException ex)
{
if (Network.WouldBlock(ex))
{
return(sent);
}
else if (Network.ConnectionLost(ex))
{
throw new Ice.ConnectionLostException(ex);
}
throw new Ice.SocketException(ex);
}
}
return(sent);
}
public void FinishWrite(Buffer buf)
{
Debug.Assert(_writeEventArgs != null);
if (_fd == null)
{
buf.B.Position(buf.Size()); // Assume all the data was sent for at-most-once semantics.
_writeEventArgs = null;
return;
}
if (!_incoming && _state < StateConnected)
{
if (_writeEventArgs.SocketError != SocketError.Success)
{
var ex = new SocketException((int)_writeEventArgs.SocketError);
if (Network.ConnectionRefused(ex))
{
throw new Ice.ConnectionRefusedException(ex);
}
else
{
throw new Ice.ConnectFailedException(ex);
}
}
return;
}
int ret;
try
{
if (_writeEventArgs.SocketError != SocketError.Success)
{
throw new SocketException((int)_writeEventArgs.SocketError);
}
ret = _writeEventArgs.BytesTransferred;
}
catch (SocketException ex)
{
if (Network.ConnectionLost(ex))
{
throw new Ice.ConnectionLostException(ex);
}
else
{
throw new Ice.SocketException(ex);
}
}
if (ret == 0)
{
throw new Ice.ConnectionLostException();
}
Debug.Assert(ret > 0);
Debug.Assert(ret == buf.B.Limit());
buf.B.Position(buf.B.Position() + ret);
}
private int WriteData(IList <ArraySegment <byte> > buffer, int offset, int count)
{
Debug.Assert(_fd != null);
if (AssemblyUtil.IsMono)
{
//
// Mono on Android and iOS don't support the use of synchronous socket
// operations on a non-blocking socket. Returning 0 here forces the caller to schedule
// an asynchronous operation.
//
return(0);
}
int packetSize = _maxSendPacketSize;
if (AssemblyUtil.IsWindows)
{
//
// On Windows, limiting the buffer size is important to prevent
// poor throughput performances when transferring large amount of
// data. See Microsoft KB article KB823764.
//
if (_maxSendPacketSize > 0 && packetSize > _maxSendPacketSize / 2)
{
packetSize = _maxSendPacketSize / 2;
}
}
int remaining = count - offset;
int sent = 0;
while (remaining - sent > 0)
{
try
{
buffer.FillSegments(offset + sent, _sendSegments, Math.Min(remaining - sent, packetSize));
int ret = _fd.Send(_sendSegments, SocketFlags.None);
_sendSegments.Clear();
Debug.Assert(ret > 0);
sent += ret;
}
catch (SocketException ex)
{
if (Network.WouldBlock(ex))
{
return(sent);
}
else if (Network.ConnectionLost(ex))
{
throw new ConnectionLostException(ex);
}
throw new TransportException(ex);
}
}
return(sent);
}
/// <summary>Starts an asynchronous write operation of the buffer data to the socket
/// starting at the given offset, completed is set to true if the write operation
/// account for the remaining of the buffer data or false otheriwse, returns whenever
/// the asynchronous operation completed synchronously or not.</summary>
/// <param name="buffer">The data to write to the socket as a list of byte array segments.</param>
/// <param name="offset">The zero based byte offset into the buffer at what start writing.</param>
/// <param name="callback">The asyncrhonous completion callback.</param>
/// <param name="state">A state object that is asocciated with the asynchronous operation.</param>
/// <param name="completed">True if the write operation accounts for the buffer remaining data, from
/// offset to the end of the buffer.</param>
/// <returns>True if the asynchronous operation compled synchronously otherwise false.</returns>
public bool StartWrite(IList <ArraySegment <byte> > buffer, int offset, AsyncCallback callback, object state,
out bool completed)
{
Debug.Assert(_fd != null && _writeEventArgs != null);
if (_state == StateConnectPending)
{
completed = false;
_writeCallback = callback;
try
{
EndPoint addr;
if (_proxy != null)
{
addr = _proxy.GetAddress();
}
else
{
Debug.Assert(_addr != null);
addr = _addr;
}
_writeEventArgs.RemoteEndPoint = addr;
_writeEventArgs.UserToken = state;
return(!_fd.ConnectAsync(_writeEventArgs));
}
catch (System.Exception ex)
{
throw new Ice.TransportException(ex);
}
}
try
{
int count = buffer.GetByteCount();
int remaining = count - offset;
buffer.FillSegments(offset, _sendSegments, Math.Min(remaining, _maxSendPacketSize));
_writeCallback = callback;
_writeEventArgs.UserToken = state;
_writeEventArgs.BufferList = _sendSegments;
bool completedSynchronously = !_fd.SendAsync(_writeEventArgs);
completed = _maxSendPacketSize >= remaining;
return(completedSynchronously);
}
catch (System.Net.Sockets.SocketException ex)
{
if (Network.ConnectionLost(ex))
{
throw new ConnectionLostException(ex);
}
throw new Ice.TransportException(ex);
}
catch (ObjectDisposedException ex)
{
throw new ConnectionLostException(ex);
}
}
public void FinishWrite(Buffer buf)
{
if (_fd == null) // Transceiver was closed
{
if (buf.Size() - buf.B.Position() < _maxSendPacketSize)
{
buf.B.Position(buf.B.Limit()); // Assume all the data was sent for at-most-once semantics.
}
return;
}
Debug.Assert(_fd != null && _writeEventArgs != null);
if (_state < StateConnected && _state != StateProxyWrite)
{
return;
}
try
{
if (_writeEventArgs.SocketError != SocketError.Success)
{
throw new SocketException((int)_writeEventArgs.SocketError);
}
int ret = _writeEventArgs.BytesTransferred;
_writeEventArgs.SetBuffer(null, 0, 0);
if (ret == 0)
{
throw new Ice.ConnectionLostException();
}
Debug.Assert(ret > 0);
buf.B.Position(buf.B.Position() + ret);
if (_state == StateProxyWrite)
{
Debug.Assert(_proxy != null);
_state = ToState(_proxy.EndWrite(buf));
}
}
catch (SocketException ex)
{
if (Network.ConnectionLost(ex))
{
throw new Ice.ConnectionLostException(ex);
}
throw new Ice.SocketException(ex);
}
catch (ObjectDisposedException ex)
{
throw new Ice.ConnectionLostException(ex);
}
}
public bool StartWrite(Buffer buf, AsyncCallback callback, object state, out bool completed)
{
Debug.Assert(_fd != null && _writeEventArgs != null);
if (_state == StateConnectPending)
{
completed = false;
_writeCallback = callback;
try
{
EndPoint addr;
if (_proxy != null)
{
addr = _proxy.GetAddress();
}
else
{
Debug.Assert(_addr != null);
addr = _addr;
}
_writeEventArgs.RemoteEndPoint = addr;
_writeEventArgs.UserToken = state;
return(!_fd.ConnectAsync(_writeEventArgs));
}
catch (Exception ex)
{
throw new Ice.SocketException(ex);
}
}
int packetSize = GetSendPacketSize(buf.B.Remaining());
try
{
_writeCallback = callback;
_writeEventArgs.UserToken = state;
_writeEventArgs.SetBuffer(buf.B.RawBytes(), buf.B.Position(), packetSize);
bool completedSynchronously = !_fd.SendAsync(_writeEventArgs);
completed = packetSize == buf.B.Remaining();
return(completedSynchronously);
}
catch (SocketException ex)
{
if (Network.ConnectionLost(ex))
{
throw new Ice.ConnectionLostException(ex);
}
throw new Ice.SocketException(ex);
}
catch (ObjectDisposedException ex)
{
throw new Ice.ConnectionLostException(ex);
}
}
public bool StartRead(Buffer buf, AsyncCallback callback, object state)
{
Debug.Assert(_fd != null);
Debug.Assert(buf.B.Position() == 0);
int packetSize = Math.Min(MaxPacketSize, _rcvSize - UdpOverhead);
buf.Resize(packetSize, true);
buf.B.Position(0);
try
{
// TODO: Workaround for https://github.com/dotnet/corefx/issues/31182
if (_state == StateConnected ||
(AssemblyUtil.IsMacOS && _fd.AddressFamily == AddressFamily.InterNetworkV6 && _fd.DualMode))
{
_readCallback = callback;
_readEventArgs.UserToken = state;
_readEventArgs.SetBuffer(buf.B.RawBytes(), buf.B.Position(), packetSize);
return(!_fd.ReceiveAsync(_readEventArgs));
}
else
{
Debug.Assert(_incoming);
_readCallback = callback;
_readEventArgs.UserToken = state;
_readEventArgs.SetBuffer(buf.B.RawBytes(), 0, buf.B.Limit());
return(!_fd.ReceiveFromAsync(_readEventArgs));
}
}
catch (SocketException ex)
{
if (Network.RecvTruncated(ex))
{
// Nothing todo
return(true);
}
else
{
if (Network.ConnectionLost(ex))
{
throw new Ice.ConnectionLostException(ex);
}
else
{
throw new Ice.SocketException(ex);
}
}
}
}
private int ReadData(ArraySegment <byte> buffer, int offset)
{
Debug.Assert(_fd != null);
if (AssemblyUtil.IsMono)
{
//
// Mono on Android and iOS don't support the use of synchronous socket
// operations on a non-blocking socket. Returning 0 here forces the caller to schedule
// an asynchronous operation.
//
return(0);
}
int bytesTransferred = 0;
int bufferOffset = buffer.Offset + offset;
while (buffer.Count - (offset + bytesTransferred) > 0)
{
try
{
int ret = _fd.Receive(buffer.Array, bufferOffset + bytesTransferred,
GetRecvPacketSize(buffer.Count - (offset + bytesTransferred)),
SocketFlags.None);
if (ret == 0)
{
throw new ConnectionLostException();
}
bytesTransferred += ret;
}
catch (SocketException ex)
{
if (Network.WouldBlock(ex))
{
return(bytesTransferred);
}
else if (Network.Interrupted(ex))
{
continue;
}
else if (Network.ConnectionLost(ex))
{
throw new ConnectionLostException(ex);
}
throw new TransportException(ex);
}
}
return(bytesTransferred);
}
public bool StartRead(ref ArraySegment <byte> buffer, ref int offset, AsyncCallback callback, object state)
{
Debug.Assert(_fd != null);
Debug.Assert(offset == 0, $"offset: {offset}\n{Environment.StackTrace}");
int packetSize = Math.Min(MaxPacketSize, _rcvSize - UdpOverhead);
Debug.Assert(buffer.Count == 0);
buffer = new byte[packetSize];
try
{
// TODO: Workaround for https://github.com/dotnet/corefx/issues/31182
_readCallback = callback;
_readEventArgs.UserToken = state;
_readEventArgs.SetBuffer(buffer.Array, 0, packetSize);
if (_state == StateConnected ||
(AssemblyUtil.IsMacOS && _fd.AddressFamily == AddressFamily.InterNetworkV6 && _fd.DualMode))
{
return(!_fd.ReceiveAsync(_readEventArgs));
}
else
{
Debug.Assert(_incoming);
return(!_fd.ReceiveFromAsync(_readEventArgs));
}
}
catch (System.Net.Sockets.SocketException ex)
{
if (Network.RecvTruncated(ex))
{
// Nothing todo
return(true);
}
else
{
if (Network.ConnectionLost(ex))
{
throw new Ice.ConnectionLostException(ex);
}
else
{
throw new Ice.SocketException(ex);
}
}
}
}
private int Read(ByteBuffer buf)
{
Debug.Assert(_fd != null);
if (AssemblyUtil.IsMono)
{
//
// Mono on Android and iOS don't support the use of synchronous socket
// operations on a non-blocking socket. Returning 0 here forces the caller to schedule
// an asynchronous operation.
//
return(0);
}
int read = 0;
while (buf.HasRemaining())
{
try
{
int ret = _fd.Receive(buf.RawBytes(), buf.Position(), buf.Remaining(), SocketFlags.None);
if (ret == 0)
{
throw new Ice.ConnectionLostException();
}
read += ret;
buf.Position(buf.Position() + ret);
}
catch (SocketException ex)
{
if (Network.WouldBlock(ex))
{
return(read);
}
else if (Network.Interrupted(ex))
{
continue;
}
else if (Network.ConnectionLost(ex))
{
throw new Ice.ConnectionLostException(ex);
}
throw new Ice.SocketException(ex);
}
}
return(read);
}
public void FinishRead(Buffer buf)
{
if (_fd == null) // Transceiver was closed
{
return;
}
Debug.Assert(_fd != null && _readEventArgs != null);
try
{
if (_readEventArgs.SocketError != SocketError.Success)
{
throw new SocketException((int)_readEventArgs.SocketError);
}
int ret = _readEventArgs.BytesTransferred;
_readEventArgs.SetBuffer(null, 0, 0);
if (ret == 0)
{
throw new Ice.ConnectionLostException();
}
Debug.Assert(ret > 0);
buf.B.Position(buf.B.Position() + ret);
if (_state == StateProxyRead)
{
Debug.Assert(_proxy != null);
_state = ToState(_proxy.EndRead(buf));
}
}
catch (SocketException ex)
{
if (Network.ConnectionLost(ex))
{
throw new Ice.ConnectionLostException(ex);
}
throw new Ice.SocketException(ex);
}
catch (ObjectDisposedException ex)
{
throw new Ice.ConnectionLostException(ex);
}
}
public void FinishRead(ref ArraySegment <byte> buffer, ref int offset)
{
if (_fd == null) // Transceiver was closed
{
return;
}
Debug.Assert(_fd != null && _readEventArgs != null);
try
{
if (_readEventArgs.SocketError != SocketError.Success)
{
throw new System.Net.Sockets.SocketException((int)_readEventArgs.SocketError);
}
int ret = _readEventArgs.BytesTransferred;
_readEventArgs.SetBuffer(null, 0, 0);
if (ret == 0)
{
throw new ConnectionLostException();
}
Debug.Assert(ret > 0);
offset += ret;
if (_state == StateProxyRead)
{
Debug.Assert(_proxy != null);
_state = ToState(_proxy.EndRead(ref buffer, offset));
}
}
catch (System.Net.Sockets.SocketException ex)
{
if (Network.ConnectionLost(ex))
{
throw new Ice.ConnectionLostException(ex);
}
throw new Ice.TransportException(ex);
}
catch (ObjectDisposedException ex)
{
throw new ConnectionLostException(ex);
}
}
public bool StartRead(ArraySegment <byte> buffer, int offset, AsyncCallback callback, object state)
{
Debug.Assert(_fd != null && _readEventArgs != null);
int packetSize = GetRecvPacketSize(buffer.Count - offset);
try
{
_readCallback = callback;
_readEventArgs.UserToken = state;
_readEventArgs.SetBuffer(buffer.Array, buffer.Offset + offset, packetSize);
return(!_fd.ReceiveAsync(_readEventArgs));
}
catch (SocketException ex)
{
if (Network.ConnectionLost(ex))
{
throw new ConnectionLostException(ex);
}
throw new TransportException(ex);
}
}
public bool StartRead(Buffer buf, AsyncCallback callback, object state)
{
Debug.Assert(_fd != null && _readEventArgs != null);
int packetSize = GetRecvPacketSize(buf.B.Remaining());
try
{
_readCallback = callback;
_readEventArgs.UserToken = state;
_readEventArgs.SetBuffer(buf.B.RawBytes(), buf.B.Position(), packetSize);
return(!_fd.ReceiveAsync(_readEventArgs));
}
catch (SocketException ex)
{
if (Network.ConnectionLost(ex))
{
throw new Ice.ConnectionLostException(ex);
}
throw new Ice.SocketException(ex);
}
}
public void FinishWrite(IList <ArraySegment <byte> > buffer, ref int offset)
{
Debug.Assert(_writeEventArgs != null);
Debug.Assert(offset == 0);
if (_fd == null)
{
int count = buffer.GetByteCount(); // Assume all the data was sent for at-most-once semantics.
_writeEventArgs = null;
offset = count;
return;
}
if (!_incoming && _state < StateConnected)
{
if (_writeEventArgs.SocketError != SocketError.Success)
{
var ex = new System.Net.Sockets.SocketException((int)_writeEventArgs.SocketError);
if (Network.ConnectionRefused(ex))
{
throw new ConnectionRefusedException(ex);
}
else
{
throw new ConnectFailedException(ex);
}
}
return;
}
int ret;
try
{
if (_writeEventArgs.SocketError != SocketError.Success)
{
throw new System.Net.Sockets.SocketException((int)_writeEventArgs.SocketError);
}
ret = _writeEventArgs.BytesTransferred;
_writeEventArgs.SetBuffer(null, 0, 0);
if (_writeEventArgs.BufferList != null && _writeEventArgs.BufferList != buffer)
{
_writeEventArgs.BufferList.Clear();
}
_writeEventArgs.BufferList = null;
}
catch (System.Net.Sockets.SocketException ex)
{
if (Network.ConnectionLost(ex))
{
throw new ConnectionLostException(ex);
}
else
{
throw new Ice.SocketException(ex);
}
}
if (ret == 0)
{
throw new ConnectionLostException();
}
Debug.Assert(ret > 0);
Debug.Assert(ret == buffer.GetByteCount());
offset = ret;
return;
}
public int Write(IList <ArraySegment <byte> > buffer, ref int offset)
{
int count = buffer.GetByteCount();
int remaining = count - offset;
if (remaining == 0)
{
return(SocketOperation.None);
}
Debug.Assert(_fd != null && _state >= StateConnected);
// The caller is supposed to check the send size before by calling checkSendSize
Debug.Assert(Math.Min(MaxPacketSize, _sndSize - UdpOverhead) >= count);
int ret;
while (true)
{
try
{
if (_state == StateConnected)
{
ret = _fd.Send(buffer, SocketFlags.None);
}
else
{
if (_peerAddr == null)
{
throw new Ice.SocketException();
}
ArraySegment <byte> data = buffer.GetSegment(0, count);
ret = _fd.SendTo(data.Array, 0, data.Count, SocketFlags.None, _peerAddr);
Debug.Assert(ret == count);
}
offset += ret;
break;
}
catch (System.Net.Sockets.SocketException ex)
{
if (Network.Interrupted(ex))
{
continue;
}
if (Network.WouldBlock(ex))
{
return(SocketOperation.Write);
}
if (Network.ConnectionLost(ex))
{
throw new Ice.ConnectionLostException(ex);
}
else
{
throw new Ice.SocketException(ex);
}
}
}
return(SocketOperation.None);
}
public int Write(Buffer buf)
{
if (!buf.B.HasRemaining())
{
return(SocketOperation.None);
}
Debug.Assert(buf.B.Position() == 0);
Debug.Assert(_fd != null && _state >= StateConnected);
// The caller is supposed to check the send size before by calling checkSendSize
Debug.Assert(Math.Min(MaxPacketSize, _sndSize - UdpOverhead) >= buf.Size());
int ret;
while (true)
{
try
{
if (_state == StateConnected)
{
ret = _fd.Send(buf.B.RawBytes(), 0, buf.Size(), SocketFlags.None);
}
else
{
if (_peerAddr == null)
{
throw new Ice.SocketException();
}
ret = _fd.SendTo(buf.B.RawBytes(), 0, buf.Size(), SocketFlags.None, _peerAddr);
}
break;
}
catch (SocketException ex)
{
if (Network.Interrupted(ex))
{
continue;
}
if (Network.WouldBlock(ex))
{
return(SocketOperation.Write);
}
if (Network.ConnectionLost(ex))
{
throw new Ice.ConnectionLostException(ex);
}
else
{
throw new Ice.SocketException(ex);
}
}
catch (Exception e)
{
throw new Ice.SyscallException(e);
}
}
Debug.Assert(ret > 0);
Debug.Assert(ret == buf.B.Limit());
buf.B.Position(buf.B.Limit());
return(SocketOperation.None);
}
public int Read(Buffer buf, ref bool hasMoreData)
{
if (!buf.B.HasRemaining())
{
return(SocketOperation.None);
}
Debug.Assert(buf.B.Position() == 0);
Debug.Assert(_fd != null);
int packetSize = Math.Min(MaxPacketSize, _rcvSize - UdpOverhead);
buf.Resize(packetSize, true);
buf.B.Position(0);
int ret;
while (true)
{
try
{
EndPoint?peerAddr = _peerAddr;
if (peerAddr == null)
{
if (_addr.AddressFamily == AddressFamily.InterNetwork)
{
peerAddr = new IPEndPoint(IPAddress.Any, 0);
}
else
{
Debug.Assert(_addr.AddressFamily == AddressFamily.InterNetworkV6);
peerAddr = new IPEndPoint(IPAddress.IPv6Any, 0);
}
}
// TODO: Workaround for https://github.com/dotnet/corefx/issues/31182
if (_state == StateConnected ||
(AssemblyUtil.IsMacOS && _fd.AddressFamily == AddressFamily.InterNetworkV6 && _fd.DualMode))
{
ret = _fd.Receive(buf.B.RawBytes(), 0, buf.B.Limit(), SocketFlags.None);
}
else
{
ret = _fd.ReceiveFrom(buf.B.RawBytes(), 0, buf.B.Limit(), SocketFlags.None, ref peerAddr);
_peerAddr = (IPEndPoint)peerAddr;
}
break;
}
catch (SocketException e)
{
if (Network.RecvTruncated(e))
{
// The message was truncated and the whole buffer is filled. We ignore
// this error here, it will be detected at the connection level when
// the Ice message size is checked against the buffer size.
ret = buf.Size();
break;
}
if (Network.Interrupted(e))
{
continue;
}
if (Network.WouldBlock(e))
{
return(SocketOperation.Read);
}
if (Network.ConnectionLost(e))
{
throw new Ice.ConnectionLostException();
}
else
{
throw new Ice.SocketException(e);
}
}
catch (Exception e)
{
throw new Ice.SyscallException(e);
}
}
if (ret == 0)
{
throw new Ice.ConnectionLostException();
}
if (_state == StateNeedConnect)
{
Debug.Assert(_incoming);
//
// If we must connect, then we connect to the first peer that sends us a packet.
//
Debug.Assert(_peerAddr != null);
bool connected = Network.DoConnect(_fd, _peerAddr, null);
Debug.Assert(connected);
_state = StateConnected; // We're connected now
if (_instance.TraceLevel >= 1)
{
_instance.Logger.Trace(_instance.TraceCategory, $"connected {Transport()} socket\n{this}");
}
}
buf.Resize(ret, true);
buf.B.Position(ret);
return(SocketOperation.None);
}
public void FinishRead(Buffer buf)
{
if (_fd == null)
{
return;
}
int ret;
try
{
if (_readEventArgs.SocketError != SocketError.Success)
{
throw new SocketException((int)_readEventArgs.SocketError);
}
ret = _readEventArgs.BytesTransferred;
// TODO: Workaround for https://github.com/dotnet/corefx/issues/31182
if (_state != StateConnected &&
!(AssemblyUtil.IsMacOS && _fd.AddressFamily == AddressFamily.InterNetworkV6 && _fd.DualMode))
{
_peerAddr = _readEventArgs.RemoteEndPoint;
}
}
catch (SocketException ex)
{
if (Network.RecvTruncated(ex))
{
// The message was truncated and the whole buffer is filled. We ignore
// this error here, it will be detected at the connection level when
// the Ice message size is checked against the buffer size.
ret = buf.Size();
}
else
{
if (Network.ConnectionLost(ex))
{
throw new Ice.ConnectionLostException(ex);
}
if (Network.ConnectionRefused(ex))
{
throw new Ice.ConnectionRefusedException(ex);
}
else
{
throw new Ice.SocketException(ex);
}
}
}
if (ret == 0)
{
throw new Ice.ConnectionLostException();
}
Debug.Assert(ret > 0);
if (_state == StateNeedConnect)
{
Debug.Assert(_incoming);
//
// If we must connect, then we connect to the first peer that
// sends us a packet.
//
bool connected = !_fd.ConnectAsync(_readEventArgs);
Debug.Assert(connected);
_state = StateConnected; // We're connected now
if (_instance.TraceLevel >= 1)
{
_instance.Logger.Trace(_instance.TraceCategory, $"connected {Transport()} socket\n{this}");
}
}
buf.Resize(ret, true);
buf.B.Position(ret);
}
public bool StartWrite(Buffer buf, AsyncCallback callback, object state, out bool completed)
{
Debug.Assert(_fd != null);
Debug.Assert(_writeEventArgs != null);
if (!_incoming && _state < StateConnected)
{
Debug.Assert(_addr != null);
completed = false;
if (_sourceAddr != null)
{
_fd.Bind(_sourceAddr);
}
_writeEventArgs.UserToken = state;
return(!_fd.ConnectAsync(_writeEventArgs));
}
// The caller is supposed to check the send size before by calling checkSendSize
Debug.Assert(Math.Min(MaxPacketSize, _sndSize - UdpOverhead) >= buf.Size());
Debug.Assert(buf.B.Position() == 0);
bool completedSynchronously;
try
{
_writeCallback = callback;
if (_state == StateConnected)
{
_writeEventArgs.UserToken = state;
_writeEventArgs.SetBuffer(buf.B.RawBytes(), 0, buf.B.Limit());
completedSynchronously = !_fd.SendAsync(_writeEventArgs);
}
else
{
if (_peerAddr == null)
{
throw new Ice.SocketException();
}
_writeEventArgs.RemoteEndPoint = _peerAddr;
_writeEventArgs.UserToken = state;
_writeEventArgs.SetBuffer(buf.B.RawBytes(), 0, buf.B.Limit());
completedSynchronously = !_fd.SendToAsync(_writeEventArgs);
}
}
catch (SocketException ex)
{
if (Network.ConnectionLost(ex))
{
throw new Ice.ConnectionLostException(ex);
}
else
{
throw new Ice.SocketException(ex);
}
}
completed = true;
return(completedSynchronously);
}
