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Implementations of TCP and IPC transports separated

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Signed-off-by: Martin Sustrik <sustrik@250bpm.com>
This commit is contained in:
Martin Sustrik
2011-07-28 13:19:55 +02:00
parent 6e987428d4
commit 5ac63140b0
11 changed files with 1008 additions and 45 deletions
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20
src/tcp_listener.cpp
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@@ -87,6 +87,26 @@ void zmq::tcp_listener_t::in_event ()
if (fd == retired_fd)
return;
// Disable Nagle's algorithm. We are doing data batching on 0MQ level,
// so using Nagle wouldn't improve throughput in anyway, but it would
// hurt latency.
int nodelay = 1;
int rc = setsockopt (fd, IPPROTO_TCP, TCP_NODELAY, (char*) &nodelay,
sizeof (int));
#ifdef ZMQ_HAVE_WINDOWS
wsa_assert (rc != SOCKET_ERROR);
#else
errno_assert (rc == 0);
#endif
#ifdef ZMQ_HAVE_OPENVMS
// Disable delayed acknowledgements as they hurt latency is serious manner.
int nodelack = 1;
rc = setsockopt (fd, IPPROTO_TCP, TCP_NODELACK, (char*) &nodelack,
sizeof (int));
errno_assert (rc != SOCKET_ERROR);
#endif
// Create the engine object for this connection.
tcp_engine_t *engine = new (std::nothrow) tcp_engine_t (fd, options);
alloc_assert (engine);