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179 lines
4.7 KiB
179 lines
4.7 KiB
/* Copyright Joyent, Inc. and other Node contributors. All rights reserved. |
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* |
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* Permission is hereby granted, free of charge, to any person obtaining a copy |
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* of this software and associated documentation files (the "Software"), to |
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* deal in the Software without restriction, including without limitation the |
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
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* sell copies of the Software, and to permit persons to whom the Software is |
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* furnished to do so, subject to the following conditions: |
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* |
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* The above copyright notice and this permission notice shall be included in |
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* all copies or substantial portions of the Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
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* IN THE SOFTWARE. |
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*/ |
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#include "uv.h" |
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#include "task.h" |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#define CHECK_HANDLE(handle) \ |
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ASSERT((uv_udp_t*)(handle) == &server || (uv_udp_t*)(handle) == &client) |
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#define MULTICAST_ADDR "239.255.0.1" |
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static uv_udp_t server; |
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static uv_udp_t client; |
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static uv_udp_send_t req; |
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static uv_udp_send_t req_ss; |
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static int cl_recv_cb_called; |
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static int sv_send_cb_called; |
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static int close_cb_called; |
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static void alloc_cb(uv_handle_t* handle, |
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size_t suggested_size, |
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uv_buf_t* buf) { |
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static char slab[65536]; |
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CHECK_HANDLE(handle); |
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ASSERT(suggested_size <= sizeof(slab)); |
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buf->base = slab; |
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buf->len = sizeof(slab); |
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} |
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static void close_cb(uv_handle_t* handle) { |
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CHECK_HANDLE(handle); |
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close_cb_called++; |
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} |
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static void sv_send_cb(uv_udp_send_t* req, int status) { |
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ASSERT(req != NULL); |
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ASSERT(status == 0); |
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CHECK_HANDLE(req->handle); |
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sv_send_cb_called++; |
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if (sv_send_cb_called == 2) |
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uv_close((uv_handle_t*) req->handle, close_cb); |
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} |
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static int do_send(uv_udp_send_t* send_req) { |
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uv_buf_t buf; |
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struct sockaddr_in addr; |
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buf = uv_buf_init("PING", 4); |
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ASSERT(0 == uv_ip4_addr(MULTICAST_ADDR, TEST_PORT, &addr)); |
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/* client sends "PING" */ |
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return uv_udp_send(send_req, |
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&client, |
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&buf, |
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1, |
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(const struct sockaddr*) &addr, |
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sv_send_cb); |
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} |
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static void cl_recv_cb(uv_udp_t* handle, |
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ssize_t nread, |
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const uv_buf_t* buf, |
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const struct sockaddr* addr, |
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unsigned flags) { |
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CHECK_HANDLE(handle); |
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ASSERT(flags == 0); |
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if (nread < 0) { |
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ASSERT(0 && "unexpected error"); |
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} |
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if (nread == 0) { |
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/* Returning unused buffer. Don't count towards cl_recv_cb_called */ |
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ASSERT(addr == NULL); |
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return; |
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} |
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ASSERT(addr != NULL); |
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ASSERT(nread == 4); |
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ASSERT(!memcmp("PING", buf->base, nread)); |
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cl_recv_cb_called++; |
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if (cl_recv_cb_called == 2) { |
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/* we are done with the server handle, we can close it */ |
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uv_close((uv_handle_t*) &server, close_cb); |
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} else { |
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int r; |
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char source_addr[64]; |
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r = uv_ip4_name((const struct sockaddr_in*)addr, source_addr, sizeof(source_addr)); |
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ASSERT(r == 0); |
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r = uv_udp_set_membership(&server, MULTICAST_ADDR, NULL, UV_LEAVE_GROUP); |
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ASSERT(r == 0); |
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r = uv_udp_set_source_membership(&server, MULTICAST_ADDR, NULL, source_addr, UV_JOIN_GROUP); |
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ASSERT(r == 0); |
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r = do_send(&req_ss); |
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ASSERT(r == 0); |
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} |
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} |
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TEST_IMPL(udp_multicast_join) { |
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int r; |
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struct sockaddr_in addr; |
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ASSERT(0 == uv_ip4_addr("0.0.0.0", TEST_PORT, &addr)); |
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r = uv_udp_init(uv_default_loop(), &server); |
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ASSERT(r == 0); |
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r = uv_udp_init(uv_default_loop(), &client); |
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ASSERT(r == 0); |
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/* bind to the desired port */ |
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r = uv_udp_bind(&server, (const struct sockaddr*) &addr, 0); |
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ASSERT(r == 0); |
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/* join the multicast channel */ |
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r = uv_udp_set_membership(&server, MULTICAST_ADDR, NULL, UV_JOIN_GROUP); |
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if (r == UV_ENODEV) |
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RETURN_SKIP("No multicast support."); |
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ASSERT(r == 0); |
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r = uv_udp_recv_start(&server, alloc_cb, cl_recv_cb); |
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ASSERT(r == 0); |
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r = do_send(&req); |
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ASSERT(r == 0); |
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ASSERT(close_cb_called == 0); |
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ASSERT(cl_recv_cb_called == 0); |
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ASSERT(sv_send_cb_called == 0); |
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/* run the loop till all events are processed */ |
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uv_run(uv_default_loop(), UV_RUN_DEFAULT); |
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ASSERT(cl_recv_cb_called == 2); |
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ASSERT(sv_send_cb_called == 2); |
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ASSERT(close_cb_called == 2); |
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MAKE_VALGRIND_HAPPY(); |
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return 0; |
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}
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