/// <summary>
/// Queues a write request.
/// </summary>
protected void BeginWriteMessage(ArraySegment <byte> buffer, object state)
{
ServiceResult error = ServiceResult.Good;
IMessageSocketAsyncEventArgs args = m_socket.MessageSocketEventArgs();
try
{
args.SetBuffer(buffer.Array, buffer.Offset, buffer.Count);
args.Completed += OnWriteComplete;
args.UserToken = state;
if (!m_socket.SendAsync(args))
{
// I/O completed synchronously
if (args.IsSocketError || (args.BytesTransferred < buffer.Count))
{
error = ServiceResult.Create(StatusCodes.BadConnectionClosed, args.SocketErrorString);
HandleWriteComplete(null, state, args.BytesTransferred, error);
args.Dispose();
}
else
{
// success, call Complete
OnWriteComplete(null, args);
}
}
}
catch (Exception ex)
{
error = ServiceResult.Create(ex, StatusCodes.BadTcpInternalError, "Unexpected error during write operation.");
HandleWriteComplete(null, state, args.BytesTransferred, error);
args.Dispose();
}
}
/// <summary>
/// Queues a write request.
/// </summary>
protected void BeginWriteMessage(BufferCollection buffers, object state)
{
ServiceResult error = ServiceResult.Good;
IMessageSocketAsyncEventArgs args = m_socket.MessageSocketEventArgs();
try
{
args.BufferList = buffers;
args.Completed += OnWriteComplete;
args.UserToken = state;
if (m_socket == null ||
!m_socket.SendAsync(args))
{
// I/O completed synchronously
if (args.IsSocketError || (args.BytesTransferred < buffers.TotalSize))
{
error = ServiceResult.Create(StatusCodes.BadConnectionClosed, args.SocketErrorString);
HandleWriteComplete(buffers, state, args.BytesTransferred, error);
args.Dispose();
}
else
{
OnWriteComplete(null, args);
}
}
}
catch (Exception ex)
{
error = ServiceResult.Create(ex, StatusCodes.BadTcpInternalError, "Unexpected error during write operation.");
HandleWriteComplete(buffers, state, args.BytesTransferred, error);
args.Dispose();
}
}
/// <summary>
/// Handles a write complete event.
/// </summary>
protected virtual void OnWriteComplete(object sender, IMessageSocketAsyncEventArgs e)
{
lock (DataLock)
{
ServiceResult error = ServiceResult.Good;
try
{
Utils.TraceDebug("Bytes written: {0}", e.BytesTransferred);
if (e.BytesTransferred == 0)
{
error = ServiceResult.Create(StatusCodes.BadConnectionClosed, "The socket was closed by the remote application.");
}
if (e.Buffer != null)
{
BufferManager.ReturnBuffer(e.Buffer, "OnWriteComplete");
}
HandleWriteComplete((BufferCollection)e.BufferList, e.UserToken, e.BytesTransferred, error);
}
catch (Exception ex)
{
error = ServiceResult.Create(ex, StatusCodes.BadTcpInternalError, "Unexpected error during write operation.");
HandleWriteComplete((BufferCollection)e.BufferList, e.UserToken, e.BytesTransferred, error);
}
}
e.Dispose();
}