static int Main(string[] args)
{
if (args.Length != 3)
{
Console.WriteLine("usage: remote_lat remote_lat <connect-to> <message-size> <roundtrip-count>");
return 1;
}
string connectTo = args[0];
int messageSize = int.Parse(args[1]);
int roundtripCount = int.Parse(args[2]);
var context = ZMQ.CtxNew();
var reqSocket = ZMQ.Socket(context, ZmqSocketType.Req);
bool connected = reqSocket.Connect(connectTo);
if (!connected)
{
Console.WriteLine("error in zmq_connect");
}
var message = new Msg(messageSize);
var stopWatch = Stopwatch.StartNew();
for (int i = 0; i != roundtripCount; i++)
{
bool sent = reqSocket.Send(message, SendRecieveOptions.None);
if (!sent)
{
Console.WriteLine("error in zmq_sendmsg");
return -1;
}
message = reqSocket.Recv(SendRecieveOptions.None);
if (message.Size != messageSize)
{
Console.WriteLine("message of incorrect size received. Received: " + message.Size + " Expected: " + messageSize);
return -1;
}
}
stopWatch.Stop();
message.Close();
double elapsedMicroseconds = stopWatch.ElapsedTicks * 1000000 / Stopwatch.Frequency;
double latency = elapsedMicroseconds / (roundtripCount * 2);
Console.WriteLine("message size: {0} [B]", messageSize);
Console.WriteLine("roundtrip count: {0}", roundtripCount);
Console.WriteLine("average latency: {0:0.000} [µs]", latency);
reqSocket.Close();
context.Terminate();
return 0;
}
public void Plug(IOThread ioThread, SessionBase session)
{
m_encoder.SetMsgSource(session);
AddFd(m_socket);
SetPollout(m_socket);
// get the first message from the session because we don't want to send identities
Msg msg = new Msg();
msg.InitEmpty();
bool ok = session.PullMsg(ref msg);
if (ok)
{
msg.Close();
}
}
// Remove any half processed messages. Flush unflushed messages.
// Call this function when engine disconnect to get rid of leftovers.
private void CleanPipes()
{
if (m_pipe != null)
{
// Get rid of half-processed messages in the out pipe. Flush any
// unflushed messages upstream.
m_pipe.Rollback();
m_pipe.Flush();
// Remove any half-read message from the in pipe.
while (m_incompleteIn)
{
Msg msg = PullMsg();
if (msg == null)
{
Debug.Assert(!m_incompleteIn);
break;
}
msg.Close();
}
}
}
static XSub()
{
s_sendSubscription = (data, size, arg) => {
Pipe pipe = (Pipe) arg;
// Create the subsctription message.
Msg msg = new Msg(size + 1);
msg.Put((byte)1);
msg.Put(data,1, size);
// Send it to the pipe.
bool sent = pipe.Write (msg);
// If we reached the SNDHWM, and thus cannot send the subscription, drop
// the subscription message instead. This matches the behaviour of
// zmq_setsockopt(ZMQ_SUBSCRIBE, ...), which also drops subscriptions
// when the SNDHWM is reached.
if (!sent)
msg.Close ();
};
}
static XSub()
{
s_sendSubscription = (data, size, arg) => {
Pipe pipe = (Pipe)arg;
// Create the subsctription message.
Msg msg = new Msg(size + 1);
msg.Put((byte)1);
msg.Put(data, 1, size);
// Send it to the pipe.
bool sent = pipe.Write(msg);
// If we reached the SNDHWM, and thus cannot send the subscription, drop
// the subscription message instead. This matches the behaviour of
// zmq_setsockopt(ZMQ_SUBSCRIBE, ...), which also drops subscriptions
// when the SNDHWM is reached.
if (!sent)
{
msg.Close();
}
};
}
protected override void ProcessPipeTermAck()
{
// Notify the user that all the references to the pipe should be dropped.
Debug.Assert(m_sink != null);
m_sink.Terminated(this);
// In terminating and double_terminated states there's nothing to do.
// Simply deallocate the pipe. In terminated state we have to ack the
// peer before deallocating this side of the pipe. All the other states
// are invalid.
if (m_state == State.Terminated)
{
m_outboundPipe = null;
SendPipeTermAck(m_peer);
}
else
{
Debug.Assert(m_state == State.Terminating || m_state == State.DoubleTerminated);
}
// We'll deallocate the inbound pipe, the peer will deallocate the outbound
// pipe (which is an inbound pipe from its point of view).
// First, delete all the unread messages in the pipe. We have to do it by
// hand because msg_t doesn't have automatic destructor. Then deallocate
// the ypipe itself.
var msg = new Msg();
if (m_inboundPipe != null)
{
while (m_inboundPipe.Read(ref msg))
{
msg.Close();
}
}
m_inboundPipe = null;
}
protected override void XReadActivated(Pipe pipe)
{
// There are some subscriptions waiting. Let's process them.
Msg sub = new Msg();
while (pipe.Read(ref sub))
{
// Apply the subscription to the trie.
byte[] data = sub.Data;
int size = sub.Size;
if (size > 0 && (data[0] == 0 || data[0] == 1))
{
bool unique;
if (data[0] == 0)
{
unique = m_subscriptions.Remove(data, 1, size - 1, pipe);
}
else
{
unique = m_subscriptions.Add(data, 1, size - 1, pipe);
}
// If the subscription is not a duplicate, store it so that it can be
// passed to used on next recv call.
if (m_options.SocketType == ZmqSocketType.Xpub && (unique || m_verbose))
{
m_pending.Enqueue(new Blob(sub.Data, sub.Size));
}
}
else // process message unrelated to sub/unsub
{
m_pending.Enqueue(new Blob(sub.Data, sub.Size));
}
sub.Close();
}
}
protected override void ProcessHiccup(object pipe)
{
// Destroy old out-pipe. Note that the read end of the pipe was already
// migrated to this thread.
Debug.Assert(m_outboundPipe != null);
m_outboundPipe.Flush();
var msg = new Msg();
while (m_outboundPipe.Read(ref msg))
{
msg.Close();
}
// Plug in the new out-pipe.
Debug.Assert(pipe != null);
m_outboundPipe = (YPipe <Msg>)pipe;
m_outActive = true;
// If appropriate, notify the user about the hiccup.
if (m_state == State.Active)
{
m_sink.Hiccuped(this);
}
}
public virtual void PushMsg(ref Msg msg)
{
// First message to receive is identity (if required).
if (!m_identityReceived)
{
msg.SetFlags(MsgFlags.Identity);
m_identityReceived = true;
if (!m_options.RecvIdentity)
{
msg.Close();
msg.InitEmpty();
return;
}
}
if (m_pipe != null && m_pipe.Write(ref msg))
{
msg.InitEmpty();
return;
}
throw AgainException.Create();
}
public virtual bool PushMsg(ref Msg msg)
{
// First message to receive is identity (if required).
if (!m_identityReceived)
{
msg.SetFlags(MsgFlags.Identity);
m_identityReceived = true;
if (!m_options.RecvIdentity)
{
msg.Close();
msg.InitEmpty();
return(true);
}
}
if (m_pipe != null && m_pipe.Write(ref msg))
{
msg.InitEmpty();
return(true);
}
return(false);
}
protected override void ProcessHiccup(object pipe)
{
// Destroy old out-pipe. Note that the read end of the pipe was already
// migrated to this thread.
Debug.Assert(m_outboundPipe != null);
m_outboundPipe.Flush();
var msg = new Msg();
while (m_outboundPipe.Read(out msg))
{
msg.Close();
}
// Plug in the new out-pipe.
Debug.Assert(pipe != null);
m_outboundPipe = (YPipe<Msg>)pipe;
m_outActive = true;
// If appropriate, notify the user about the hiccup.
if (m_state == State.Active)
m_sink.Hiccuped(this);
}
protected override bool XSend(ref Msg msg, SendReceiveOptions flags)
{
// If this is the first part of the message it's the ID of the
// peer to send the message to.
if (!m_moreOut)
{
Debug.Assert(m_currentOut == null);
// If we have malformed message (prefix with no subsequent message)
// then just silently ignore it.
// TODO: The connections should be killed instead.
if (msg.HasMore)
{
m_moreOut = true;
// Find the pipe associated with the identity stored in the prefix.
// If there's no such pipe just silently ignore the message, unless
// mandatory is set.
Blob identity = new Blob(msg.Data, msg.Size);
Outpipe op;
if (m_outpipes.TryGetValue(identity, out op))
{
m_currentOut = op.Pipe;
if (!m_currentOut.CheckWrite())
{
op.Active = false;
m_currentOut = null;
if (m_mandatory)
{
m_moreOut = false;
return(false);
}
}
}
else if (m_mandatory)
{
m_moreOut = false;
throw NetMQException.Create(ErrorCode.EHOSTUNREACH);
}
}
// Detach the message from the data buffer.
msg.Close();
msg.InitEmpty();
return(true);
}
if (m_options.RawSocket)
{
msg.ResetFlags(MsgFlags.More);
}
// Check whether this is the last part of the message.
m_moreOut = msg.HasMore;
// Push the message into the pipe. If there's no out pipe, just drop it.
if (m_currentOut != null)
{
// Close the remote connection if user has asked to do so
// by sending zero length message.
// Pending messages in the pipe will be dropped (on receiving term- ack)
if (m_rawSocket && msg.Size == 0)
{
m_currentOut.Terminate(false);
msg.Close();
msg.InitEmpty();
m_currentOut = null;
return(true);
}
bool ok = m_currentOut.Write(ref msg);
if (!ok)
{
m_currentOut = null;
}
else if (!m_moreOut)
{
m_currentOut.Flush();
m_currentOut = null;
}
}
else
{
msg.Close();
}
// Detach the message from the data buffer.
msg.InitEmpty();
return(true);
}
public bool Send(Msg msg, SendRecieveOptions flags)
{
// Drop the message if required. If we are at the end of the message
// switch back to non-dropping mode.
if (m_dropping) {
m_more = msg.HasMore;
m_dropping = m_more;
msg.Close ();
return true;
}
while (m_active > 0) {
if (m_pipes[m_current].Write (msg))
break;
Debug.Assert(!m_more);
m_active--;
if (m_current < m_active)
Utils.Swap (m_pipes, m_current, m_active);
else
m_current = 0;
}
// If there are no pipes we cannot send the message.
if (m_active == 0) {
ZError.ErrorNumber = ErrorNumber.EAGAIN;
return false;
}
// If it's part of the message we can fluch it downstream and
// continue round-robinning (load balance).
m_more = msg.HasMore;
if (!m_more) {
m_pipes[m_current].Flush();
if (m_active > 1)
m_current = (m_current + 1) % m_active;
}
return true;
}
// Remove any half processed messages. Flush unflushed messages.
// Call this function when engine disconnect to get rid of leftovers.
private void CleanPipes()
{
if (m_pipe != null)
{
// Get rid of half-processed messages in the out pipe. Flush any
// unflushed messages upstream.
m_pipe.Rollback();
m_pipe.Flush();
// Remove any half-read message from the in pipe.
while (m_incompleteIn)
{
var msg = new Msg();
msg.InitEmpty();
if (!PullMsg(ref msg))
{
Debug.Assert(!m_incompleteIn);
break;
}
msg.Close();
}
}
}
private bool IdentifyPeer(Pipe pipe)
{
Blob identity;
if (m_options.RawSocket)
{
// Always assign identity for raw-socket
byte[] buf = new byte[5];
buf[0] = 0;
byte[] result = BitConverter.GetBytes(m_nextPeerId++);
Buffer.BlockCopy(result, 0, buf, 1, 4);
identity = new Blob(buf, buf.Length);
}
else
{
// Pick up handshake cases and also case where next identity is set
Msg msg = new Msg();
msg.InitEmpty();
bool ok = pipe.Read(ref msg);
if (!ok)
{
return(false);
}
if (msg.Size == 0)
{
// Fall back on the auto-generation
byte[] buf = new byte[5];
buf[0] = 0;
byte[] result = BitConverter.GetBytes(m_nextPeerId++);
Buffer.BlockCopy(result, 0, buf, 1, 4);
identity = new Blob(buf, buf.Length);
msg.Close();
}
else
{
identity = new Blob(msg.Data, msg.Size);
// Ignore peers with duplicate ID.
if (m_outpipes.ContainsKey(identity))
{
msg.Close();
return(false);
}
msg.Close();
}
}
pipe.Identity = identity;
// Add the record into output pipes lookup table
Outpipe outpipe = new Outpipe(pipe, true);
m_outpipes.Add(identity, outpipe);
return(true);
}
/// <summary>
/// Remove unfinished parts of the outbound message from the pipe.
/// </summary>
public void Rollback()
{
// Remove incomplete message from the outbound pipe.
if (m_outboundPipe != null)
{
var msg = new Msg();
while (m_outboundPipe.Unwrite(ref msg))
{
Debug.Assert(msg.HasMore);
msg.Close();
}
}
}
public override void Destroy()
{
base.Destroy();
m_prefetchedMsg.Close();
}
public override void Destroy()
{
base.Destroy();
m_message.Close();
}
protected override void ProcessPipeTermAck()
{
// Notify the user that all the references to the pipe should be dropped.
Debug.Assert(m_sink != null);
m_sink.Terminated(this);
// In terminating and double_terminated states there's nothing to do.
// Simply deallocate the pipe. In terminated state we have to ack the
// peer before deallocating this side of the pipe. All the other states
// are invalid.
if (m_state == State.Terminated)
{
m_outboundPipe = null;
SendPipeTermAck(m_peer);
}
else
Debug.Assert(m_state == State.Terminating || m_state == State.DoubleTerminated);
// We'll deallocate the inbound pipe, the peer will deallocate the outbound
// pipe (which is an inbound pipe from its point of view).
// First, delete all the unread messages in the pipe. We have to do it by
// hand because msg_t doesn't have automatic destructor. Then deallocate
// the ypipe itself.
var msg = new Msg();
while (m_inboundPipe.Read(out msg))
{
msg.Close();
}
m_inboundPipe = null;
}
public virtual bool PushMsg(ref Msg msg)
{
// First message to receive is identity (if required).
if (!m_identityReceived)
{
msg.SetFlags(MsgFlags.Identity);
m_identityReceived = true;
if (!m_options.RecvIdentity)
{
msg.Close();
msg.InitEmpty();
return true;
}
}
if (m_pipe != null && m_pipe.Write(ref msg))
{
msg.InitEmpty();
return true;
}
return false;
}