wangchen61698 opened a new pull request, #10319: URL: https://github.com/apache/nuttx/pull/10319
## Summary refer to https://man7.org/linux/man-pages/man7/ip.7.html IP_MULTICAST_IF (since Linux 1.2) Set the local device for a multicast socket. The argument for setsockopt(2) is an ip_mreqn or (since Linux 3.5) ip_mreq structure similar to IP_ADD_MEMBERSHIP, or an in_addr structure. (The kernel determines which structure is being passed based on the size passed in optlen.) For getsockopt(2), the argument is an in_addr structure. refer to https://man7.org/linux/man-pages/man7/ipv6.7.html IPV6_MULTICAST_IF Set the device for outgoing multicast packets on the socket. This is allowed only for SOCK_DGRAM and SOCK_RAW socket. The argument is a pointer to an interface index (see netdevice(7)) in an integer. ## Impact IP Multicast ## Testing testcase1: TEST_IMPL(udp_multicast_interface) { /* TODO(gengjiawen): Fix test on QEMU. */ RETURN_SKIP("Test does not currently work in QEMU"); int r; uv_udp_send_t req; uv_buf_t buf; struct sockaddr_in addr; struct sockaddr_in baddr; close_cb_called = 0; sv_send_cb_called = 0; ASSERT(0 == uv_ip4_addr("239.255.0.1", TEST_PORT, &addr)); r = uv_udp_init(uv_default_loop(), &server); ASSERT(r == 0); ASSERT(0 == uv_ip4_addr("0.0.0.0", 0, &baddr)); r = uv_udp_bind(&server, (const struct sockaddr*)&baddr, 0); ASSERT(r == 0); r = uv_udp_set_multicast_interface(&server, "0.0.0.0"); ASSERT(r == 0); /* server sends "PING" */ buf = uv_buf_init("PING", 4); r = uv_udp_send(&req, &server, &buf, 1, (const struct sockaddr*)&addr, sv_send_cb); ASSERT(r == 0); ASSERT(close_cb_called == 0); ASSERT(sv_send_cb_called == 0); /* run the loop till all events are processed */ uv_run(uv_default_loop(), UV_RUN_DEFAULT); ASSERT(sv_send_cb_called == 1); ASSERT(close_cb_called == 1); ASSERT(client.send_queue_size == 0); ASSERT(server.send_queue_size == 0); MAKE_VALGRIND_HAPPY(); return 0; } testcase2: TEST_IMPL(udp_multicast_interface6) { /* TODO(gengjiawen): Fix test on QEMU. */ RETURN_SKIP("Test does not currently work in QEMU"); int r; uv_udp_send_t req; uv_buf_t buf; struct sockaddr_in6 addr; struct sockaddr_in6 baddr; if (!can_ipv6()) RETURN_SKIP("IPv6 not supported"); close_cb_called = 0; sv_send_cb_called = 0; ASSERT(0 == uv_ip6_addr("::1", TEST_PORT, &addr)); r = uv_udp_init(uv_default_loop(), &server); ASSERT(r == 0); ASSERT(0 == uv_ip6_addr("::", 0, &baddr)); r = uv_udp_bind(&server, (const struct sockaddr*)&baddr, 0); ASSERT(r == 0); r = uv_udp_set_multicast_interface(&server, "::1%lo0"); r = uv_udp_set_multicast_interface(&server, NULL); ASSERT(r == 0); /* server sends "PING" */ buf = uv_buf_init("PING", 4); r = uv_udp_send(&req, &server, &buf, 1, (const struct sockaddr*)&addr, sv_send_cb); ASSERT(r == 0); ASSERT(close_cb_called == 0); ASSERT(sv_send_cb_called == 0); /* run the loop till all events are processed */ uv_run(uv_default_loop(), UV_RUN_DEFAULT); ASSERT(sv_send_cb_called == 1); ASSERT(close_cb_called == 1); MAKE_VALGRIND_HAPPY(); return 0; } -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
