public SessionBase(IOThread ioThread, bool connect,
SocketBase socket, Options options, Address addr)
: base(ioThread, options)
{
m_ioObject = new IOObject(ioThread);
m_connect = connect;
m_pipe = null;
m_incompleteIn = false;
m_pending = false;
m_engine = null;
m_socket = socket;
m_ioThread = ioThread;
m_hasLingerTimer = false;
m_identitySent = false;
m_identityReceived = false;
m_addr = addr;
if (options.RawSocket)
{
m_identitySent = true;
m_identityReceived = true;
}
m_terminatingPipes = new HashSet<Pipe>();
}
public PgmSender(IOThread ioThread, Options options, Address addr)
: base(ioThread)
{
m_options = options;
m_addr = addr;
m_encoder = null;
m_outBuffer = null;
m_outBufferSize = 0;
m_writeSize = 0;
m_encoder = new Encoder(0, m_options.Endian);
}
public TcpConnecter(IOThread ioThread,
SessionBase session, Options options,
Address addr, bool delayedStart)
: base(ioThread, options)
{
m_ioObject = new IOObject(ioThread);
m_addr = addr;
m_handle = null;
m_handleValid = false;
m_delayedStart = delayedStart;
m_timerStarted = false;
m_session = session;
m_currentReconnectIvl = m_options.ReconnectIvl;
Debug.Assert(m_addr != null);
m_endpoint = m_addr.ToString();
m_socket = session.Socket;
}
public PairSession(IOThread ioThread, bool connect,
SocketBase socket, Options options,
Address addr)
: base(ioThread, connect, socket, options, addr)
{
}
public ReqSession(IOThread ioThread, bool connect,
SocketBase socket, Options options,
Address addr)
: base(ioThread, connect, socket, options, addr)
{
m_state = State.Identity;
}
public static SessionBase Create(IOThread ioThread, bool connect,
SocketBase socket, Options options, Address addr)
{
SessionBase s;
switch (options.SocketType)
{
case ZmqSocketType.Req:
s = new Req.ReqSession(ioThread, connect,
socket, options, addr);
break;
case ZmqSocketType.Dealer:
s = new Dealer.DealerSession(ioThread, connect,
socket, options, addr);
break;
case ZmqSocketType.Rep:
s = new Rep.RepSession(ioThread, connect,
socket, options, addr);
break;
case ZmqSocketType.Router:
s = new Router.RouterSession(ioThread, connect,
socket, options, addr);
break;
case ZmqSocketType.Pub:
s = new Pub.PubSession(ioThread, connect,
socket, options, addr);
break;
case ZmqSocketType.Xpub:
s = new XPub.XPubSession(ioThread, connect,
socket, options, addr);
break;
case ZmqSocketType.Sub:
s = new Sub.SubSession(ioThread, connect,
socket, options, addr);
break;
case ZmqSocketType.Xsub:
s = new XSub.XSubSession(ioThread, connect,
socket, options, addr);
break;
case ZmqSocketType.Push:
s = new Push.PushSession(ioThread, connect,
socket, options, addr);
break;
case ZmqSocketType.Pull:
s = new Pull.PullSession(ioThread, connect,
socket, options, addr);
break;
case ZmqSocketType.Pair:
s = new Pair.PairSession(ioThread, connect,
socket, options, addr);
break;
case ZmqSocketType.Stream:
s = new Stream.StreamSession(ioThread, connect, socket, options, addr);
break;
default:
throw InvalidException.Create("type=" + options.SocketType);
}
return s;
}
public void Connect(String addr)
{
if (m_ctxTerminated)
{
throw TerminatingException.Create();
}
// Process pending commands, if any.
ProcessCommands(0, false);
string address;
string protocol;
DecodeAddress(addr, out address, out protocol);
CheckProtocol(protocol);
if (protocol.Equals(Address.InProcProtocol))
{
// TODO: inproc connect is specific with respect to creating pipes
// as there's no 'reconnect' functionality implemented. Once that
// is in place we should follow generic pipe creation algorithm.
// Find the peer endpoint.
Ctx.Endpoint peer = FindEndpoint(addr);
// The total HWM for an inproc connection should be the sum of
// the binder's HWM and the connector's HWM.
int sndhwm;
int rcvhwm;
if (m_options.SendHighWatermark == 0 || peer.Options.ReceiveHighWatermark == 0)
sndhwm = 0;
else
sndhwm = m_options.SendHighWatermark + peer.Options.ReceiveHighWatermark;
if (m_options.ReceiveHighWatermark == 0 || peer.Options.SendHighWatermark == 0)
rcvhwm = 0;
else
rcvhwm = m_options.ReceiveHighWatermark + peer.Options.SendHighWatermark;
// Create a bi-directional pipe to connect the peers.
ZObject[] parents = { this, peer.Socket };
int[] hwms = { sndhwm, rcvhwm };
bool[] delays = { m_options.DelayOnDisconnect, m_options.DelayOnClose };
Pipe[] pipes = Pipe.PipePair(parents, hwms, delays);
// Attach local end of the pipe to this socket object.
AttachPipe(pipes[0]);
// If required, send the identity of the peer to the local socket.
if (peer.Options.RecvIdentity)
{
Msg id = new Msg(peer.Options.IdentitySize);
id.Put(peer.Options.Identity, 0, peer.Options.IdentitySize);
id.SetFlags(MsgFlags.Identity);
bool written = pipes[0].Write(id);
Debug.Assert(written);
pipes[0].Flush();
}
// If required, send the identity of the local socket to the peer.
if (m_options.RecvIdentity)
{
Msg id = new Msg(m_options.IdentitySize);
id.Put(m_options.Identity, 0, m_options.IdentitySize);
id.SetFlags(MsgFlags.Identity);
bool written = pipes[1].Write(id);
Debug.Assert(written);
pipes[1].Flush();
}
// Attach remote end of the pipe to the peer socket. Note that peer's
// seqnum was incremented in find_endpoint function. We don't need it
// increased here.
SendBind(peer.Socket, pipes[1], false);
// Save last endpoint URI
m_options.LastEndpoint = addr;
return;
}
// Choose the I/O thread to run the session in.
IOThread ioThread = ChooseIOThread(m_options.Affinity);
if (ioThread == null)
{
throw NetMQException.Create("Empty IO Thread", ErrorCode.EMTHREAD);
}
Address paddr = new Address(protocol, address);
// Resolve address (if needed by the protocol)
if (protocol.Equals(Address.TcpProtocol))
{
paddr.Resolved = (new TcpAddress());
paddr.Resolved.Resolve(
address, m_options.IPv4Only);
}
else if (protocol.Equals(Address.IpcProtocol))
{
paddr.Resolved = (new IpcAddress());
paddr.Resolved.Resolve(address, true);
}
else if (protocol.Equals(Address.PgmProtocol) || protocol.Equals(Address.EpgmProtocol))
{
if (m_options.SocketType == ZmqSocketType.Sub || m_options.SocketType == ZmqSocketType.Xsub)
{
Bind(addr);
return;
}
paddr.Resolved = new PgmAddress();
paddr.Resolved.Resolve(address, m_options.IPv4Only);
}
// Create session.
SessionBase session = SessionBase.Create(ioThread, true, this, m_options, paddr);
Debug.Assert(session != null);
// PGM does not support subscription forwarding; ask for all data to be
// sent to this pipe.
bool icanhasall = protocol.Equals(Address.PgmProtocol) || protocol.Equals(Address.EpgmProtocol);
if (!m_options.DelayAttachOnConnect || icanhasall)
{
// Create a bi-directional pipe.
ZObject[] parents = { this, session };
int[] hwms = { m_options.SendHighWatermark, m_options.ReceiveHighWatermark };
bool[] delays = { m_options.DelayOnDisconnect, m_options.DelayOnClose };
Pipe[] pipes = Pipe.PipePair(parents, hwms, delays);
// Attach local end of the pipe to the socket object.
AttachPipe(pipes[0], icanhasall);
// Attach remote end of the pipe to the session object later on.
session.AttachPipe(pipes[1]);
}
// Save last endpoint URI
m_options.LastEndpoint = paddr.ToString();
AddEndpoint(addr, session);
return;
}