private static void VerifyMessage(ZmqMessage message)
{
if (message == null)
{
throw new ArgumentNullException("message");
}
}
/// <summary>
/// Receive all parts of a multi-part message from a remote socket in non-blocking mode.
/// </summary>
/// <remarks>
/// The <paramref name="frameTimeout"/> will be used for each underlying Receive operation. If the timeout
/// elapses before the last message is received, an incomplete message will be returned.
/// </remarks>
/// <param name="socket">A <see cref="ZmqSocket"/> object.</param>
/// <param name="message">The <see cref="ZmqMessage"/> to which message-parts will be appended.</param>
/// <param name="frameTimeout">A <see cref="TimeSpan"/> specifying the receive timeout for each frame.</param>
/// <returns>A <see cref="ZmqMessage"/> containing newly received <see cref="Frame"/> objects.</returns>
/// <exception cref="ZmqSocketException">An error occurred receiving data from a remote endpoint.</exception>
/// <exception cref="ObjectDisposedException">The <see cref="ZmqSocket"/> has been closed.</exception>
/// <exception cref="NotSupportedException">The current socket type does not support Receive operations.</exception>
public static ZmqMessage ReceiveMessage(this ZmqSocket socket, ZmqMessage message, TimeSpan frameTimeout)
{
VerifySocket(socket);
VerifyMessage(message);
Frame frame;
do
{
frame = socket.ReceiveFrame(frameTimeout);
if (frame.ReceiveStatus == ReceiveStatus.Received)
{
message.AppendShallowCopy(frame);
}
}while (frame.ReceiveStatus == ReceiveStatus.Received && frame.HasMore);
return(message);
}
/// <summary>
/// Queue a multi-part message to be sent by the socket in blocking mode.
/// </summary>
/// <param name="socket">A <see cref="ZmqSocket"/> object.</param>
/// <param name="message">A <see cref="ZmqMessage"/> that contains the message parts to be sent.</param>
/// <returns>A <see cref="SendStatus"/> describing the outcome of the send operation.</returns>
/// <exception cref="ArgumentNullException"><paramref name="message"/> is null.</exception>
/// <exception cref="ArgumentException"><paramref name="message"/> is incomplete.</exception>
/// <exception cref="ZmqSocketException">An error occurred sending data to a remote endpoint.</exception>
/// <exception cref="ObjectDisposedException">The <see cref="ZmqSocket"/> has been closed.</exception>
/// <exception cref="NotSupportedException">The current socket type does not support Send operations.</exception>
public static SendStatus SendMessage(this ZmqSocket socket, ZmqMessage message)
{
VerifySocket(socket);
VerifyMessage(message);
if (message.IsEmpty)
{
return(SendStatus.Sent);
}
if (!message.IsComplete)
{
throw new ArgumentException("Unable to send an incomplete message. Ensure HasMore on the last Frame is set to 'false'.", "message");
}
foreach (Frame frame in message)
{
socket.SendFrame(frame);
}
return(socket.SendStatus);
}
/// <summary>
/// Receive all parts of a multi-part message from a remote socket in blocking mode
/// and append them to a given message.
/// </summary>
/// <param name="socket">A <see cref="ZmqSocket"/> object.</param>
/// <param name="message">The <see cref="ZmqMessage"/> to which message-parts will be appended.</param>
/// <returns>The supplied <see cref="ZmqMessage"/> with newly received <see cref="Frame"/> objects appended.</returns>
/// <exception cref="ArgumentNullException"><paramref name="message"/> is null.</exception>
/// <exception cref="ZmqSocketException">An error occurred receiving data from a remote endpoint.</exception>
/// <exception cref="ObjectDisposedException">The <see cref="ZmqSocket"/> has been closed.</exception>
/// <exception cref="NotSupportedException">The current socket type does not support Receive operations.</exception>
public static ZmqMessage ReceiveMessage(this ZmqSocket socket, ZmqMessage message)
{
return(ReceiveMessage(socket, message, TimeSpan.MaxValue));
}