/// <summary>
/// Receive a single frame from <paramref name="socket"/>, asynchronously.
/// </summary>
/// <param name="socket">The socket to receive from.</param>
/// <param name="expectedFrameCount">Specifies the initial capacity of the <see cref="List{T}"/> used
/// to buffer results. If the number of frames is known, set it here. If more frames arrive than expected,
/// an extra allocation will occur, but the result will still be correct.</param>
/// <param name="cancellationToken">The token used to propagate notification that this operation should be canceled.</param>
/// <returns>The content of the received message.</returns>
public static async Task <NetMQMessage> ReceiveMultipartMessageAsync(
this NetMQSocket socket,
int expectedFrameCount = 4,
CancellationToken cancellationToken = default(CancellationToken))
{
var message = new NetMQMessage(expectedFrameCount);
while (true)
{
(byte[] bytes, bool more) = await socket.ReceiveFrameBytesAsync(cancellationToken);
message.Append(bytes);
if (!more)
{
break;
}
}
return(message);
}
/// <summary>
/// Receive a routing-key from <paramref name="socket"/>, blocking until one arrives.
/// </summary>
/// <param name="socket">The socket to receive from.</param>
/// <returns>The routing key and a boolean indicate if another frame of the same message follows.</returns>
public static async Task <(RoutingKey, bool)> ReceiveRoutingKeyAsync(this NetMQSocket socket)
{
var(bytes, more) = await socket.ReceiveFrameBytesAsync();
return(new RoutingKey(bytes), more);
}
