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https://github.com/zeromq/libzmq.git
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b963542e8f
Linux now supports Virtual Routing and Forwarding (VRF) as per: https://www.kernel.org/doc/Documentation/networking/vrf.txt In order for an application to bind or connect to a socket with an address in a VRF, they need to first bind the socket to the VRF device: setsockopt(sd, SOL_SOCKET, SO_BINDTODEVICE, dev, strlen(dev)+1); Note "dev" is the VRF device, eg. VRF "blue", rather than an interface enslaved to the VRF. Add a new socket option, ZMQ_BINDTODEVICE, to bind a socket to a device. In general, if a socket is bound to a device, eg. an interface, only packets received from that particular device are processed by the socket. If device is a VRF device, then subsequent binds/connects to that socket use addresses in the VRF routing table.
152 lines
4.1 KiB
C++
152 lines
4.1 KiB
C++
/*
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Copyright (c) 2007-2016 Contributors as noted in the AUTHORS file
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This file is part of libzmq, the ZeroMQ core engine in C++.
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libzmq is free software; you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License (LGPL) as published
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by the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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As a special exception, the Contributors give you permission to link
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this library with independent modules to produce an executable,
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regardless of the license terms of these independent modules, and to
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copy and distribute the resulting executable under terms of your choice,
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provided that you also meet, for each linked independent module, the
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terms and conditions of the license of that module. An independent
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module is a module which is not derived from or based on this library.
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If you modify this library, you must extend this exception to your
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version of the library.
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libzmq is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "testutil.hpp"
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void test_setsockopt_tcp_recv_buffer (void)
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{
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int rc;
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void *ctx = zmq_ctx_new ();
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void *socket = zmq_socket (ctx, ZMQ_PUSH);
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int val = 0;
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size_t placeholder = sizeof (val);
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rc = zmq_getsockopt (socket, ZMQ_RCVBUF, &val, &placeholder);
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assert (rc == 0);
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assert (val == -1);
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val = 16384;
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rc = zmq_setsockopt (socket, ZMQ_RCVBUF, &val, sizeof (val));
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assert (rc == 0);
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assert (val == 16384);
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rc = zmq_getsockopt (socket, ZMQ_RCVBUF, &val, &placeholder);
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assert (rc == 0);
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assert (val == 16384);
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zmq_close (socket);
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zmq_ctx_term (ctx);
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}
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void test_setsockopt_tcp_send_buffer (void)
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{
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int rc;
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void *ctx = zmq_ctx_new ();
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void *socket = zmq_socket (ctx, ZMQ_PUSH);
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int val = 0;
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size_t placeholder = sizeof (val);
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rc = zmq_getsockopt (socket, ZMQ_SNDBUF, &val, &placeholder);
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assert (rc == 0);
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assert (val == -1);
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val = 16384;
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rc = zmq_setsockopt (socket, ZMQ_SNDBUF, &val, sizeof (val));
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assert (rc == 0);
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assert (val == 16384);
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rc = zmq_getsockopt (socket, ZMQ_SNDBUF, &val, &placeholder);
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assert (rc == 0);
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assert (val == 16384);
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zmq_close (socket);
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zmq_ctx_term (ctx);
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}
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void test_setsockopt_use_fd ()
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{
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int rc;
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void *ctx = zmq_ctx_new ();
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void *socket = zmq_socket (ctx, ZMQ_PUSH);
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int val = 0;
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size_t placeholder = sizeof (val);
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rc = zmq_getsockopt (socket, ZMQ_USE_FD, &val, &placeholder);
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assert(rc == 0);
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assert(val == -1);
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val = 3;
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rc = zmq_setsockopt (socket, ZMQ_USE_FD, &val, sizeof(val));
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assert(rc == 0);
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assert(val == 3);
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rc = zmq_getsockopt (socket, ZMQ_USE_FD, &val, &placeholder);
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assert(rc == 0);
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assert(val == 3);
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zmq_close (socket);
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zmq_ctx_term (ctx);
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}
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#define BOUNDDEVBUFSZ 16
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void test_setsockopt_bindtodevice ()
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{
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int rc;
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void *ctx = zmq_ctx_new ();
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void *socket = zmq_socket (ctx, ZMQ_PUSH);
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char devname[BOUNDDEVBUFSZ];
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size_t buflen = BOUNDDEVBUFSZ;
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rc = zmq_getsockopt (socket, ZMQ_BINDTODEVICE, devname, &buflen);
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assert(rc == 0);
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assert(devname[0] == '\0');
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assert(buflen == 1);
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sprintf(devname, "testdev");
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buflen = strlen(devname);
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rc = zmq_setsockopt (socket, ZMQ_BINDTODEVICE, devname, buflen);
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assert(rc == 0);
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buflen = BOUNDDEVBUFSZ;
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memset(devname, 0, buflen);
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rc = zmq_getsockopt (socket, ZMQ_BINDTODEVICE, devname, &buflen);
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assert(rc == 0);
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assert(!strncmp("testdev", devname, buflen));
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zmq_close (socket);
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zmq_ctx_term (ctx);
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}
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int main (void)
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{
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test_setsockopt_tcp_recv_buffer ();
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test_setsockopt_tcp_send_buffer ();
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test_setsockopt_use_fd ();
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test_setsockopt_bindtodevice ();
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}
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