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Problem: use of TCP loopback fastpath not available for user sockets

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Solution: add socket option
This commit is contained in:
Simon Giesecke
2018-02-05 17:09:39 +01:00
parent 490d76da2f
commit a5e763039d
10 changed files with 87 additions and 19 deletions
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18
src/signaler.cpp
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@@ -65,6 +65,7 @@
#include "err.hpp"
#include "fd.hpp"
#include "ip.hpp"
#include "tcp.hpp"
#if defined ZMQ_HAVE_EVENTFD
#include <sys/eventfd.h>
@@ -392,22 +393,7 @@ static void tune_socket (const SOCKET socket)
(char *) &tcp_nodelay, sizeof tcp_nodelay);
wsa_assert (rc != SOCKET_ERROR);
int sio_loopback_fastpath = 1;
DWORD numberOfBytesReturned = 0;
rc = WSAIoctl (socket, SIO_LOOPBACK_FAST_PATH, &sio_loopback_fastpath,
sizeof sio_loopback_fastpath, NULL, 0,
&numberOfBytesReturned, 0, 0);
if (SOCKET_ERROR == rc) {
DWORD lastError = ::WSAGetLastError ();
if (WSAEOPNOTSUPP == lastError) {
// This system is not Windows 8 or Server 2012, and the call is not supported.
} else {
wsa_assert (false);
}
}
zmq::tcp_tune_loopback_fast_path (socket);
}
#endif