public int Receive(byte[] buffer, int flags)
{
int bytesReceived;
// Use zmq_buffer_recv method if appropriate -> results in fewer P/Invoke calls
if (buffer.Length <= MaxBufferSize && LibZmq.zmq_buffer_recv != null)
{
bytesReceived = Retry.IfInterrupted(LibZmq.zmq_buffer_recv.Invoke, SocketHandle, _buffer, MaxBufferSize, flags);
int size = Math.Min(buffer.Length, bytesReceived);
if (size > 0)
{
Marshal.Copy(_buffer, buffer, 0, size);
}
return size;
}
if (_msg.Init(buffer.Length) == -1)
{
return -1;
}
bytesReceived = Retry.IfInterrupted(LibZmq.zmq_msg_recv.Invoke, _msg.Ptr, SocketHandle, flags);
if (bytesReceived == 0 && LibZmq.MajorVersion < 3)
{
// 0MQ 2.x does not return number of bytes received
bytesReceived = _msg.Size();
}
if (bytesReceived > 0)
{
Marshal.Copy(_msg.Data(), buffer, 0, bytesReceived);
}
if (_msg.Close() == -1)
{
return -1;
}
return bytesReceived;
}
public byte[] Receive(byte[] buffer, int flags, out int size)
{
size = -1;
using (var message = new ZmqMsgT())
{
if (message.Init() == -1)
{
return buffer;
}
int bytesReceived = RetryIfInterrupted(() => LibZmq.zmq_msg_recv(message, SocketHandle, flags));
if (bytesReceived >= 0)
{
if (bytesReceived == 0 && LibZmq.MajorVersion < 3)
{
// 0MQ 2.x does not return number of bytes received
bytesReceived = message.Size();
}
size = bytesReceived;
if (buffer == null || size > buffer.Length)
{
buffer = new byte[size];
}
Marshal.Copy(message.Data(), buffer, 0, size);
}
if (message.Close() == -1)
{
size = -1;
}
return buffer;
}
}
public int Send(byte[] buffer, int size, int flags)
{
using (var message = new ZmqMsgT())
{
if (message.Init(size) == -1)
{
return -1;
}
if (size > 0)
{
Marshal.Copy(buffer, 0, message.Data(), size);
}
int bytesSent = RetryIfInterrupted(() => LibZmq.zmq_msg_send(message, SocketHandle, flags));
if (bytesSent == 0 && LibZmq.MajorVersion < 3)
{
// 0MQ 2.x does not report number of bytes sent, so this may be inaccurate/misleading
bytesSent = size;
}
if (message.Close() == -1)
{
return -1;
}
return bytesSent;
}
}
public int Receive(byte[] buffer, int flags)
{
using (var message = new ZmqMsgT())
{
if (message.Init(buffer.Length) == -1)
{
return -1;
}
int bytesReceived = RetryIfInterrupted(() => LibZmq.zmq_msg_recv(message, SocketHandle, flags));
if (bytesReceived == 0 && LibZmq.MajorVersion < 3)
{
// 0MQ 2.x does not return number of bytes received
bytesReceived = message.Size();
}
if (bytesReceived > 0)
{
Marshal.Copy(message.Data(), buffer, 0, bytesReceived);
}
if (message.Close() == -1)
{
return -1;
}
return bytesReceived;
}
}
