/* Copyright Joyent, Inc. and other Node contributors. All rights reserved. * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to * deal in the Software without restriction, including without limitation the * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or * sell copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS * IN THE SOFTWARE. */ #include "uv.h" #include "task.h" #include #include #include #define CHECK_HANDLE(handle) \ ASSERT((uv_udp_t*)(handle) == &server || (uv_udp_t*)(handle) == &client) static uv_udp_t server; static uv_udp_t client; static int cl_send_cb_called; static int cl_recv_cb_called; static int sv_send_cb_called; static int sv_recv_cb_called; static int close_cb_called; static void alloc_cb(uv_handle_t* handle, size_t suggested_size, uv_buf_t* buf) { static char slab[65536]; CHECK_HANDLE(handle); ASSERT(suggested_size <= sizeof(slab)); buf->base = slab; buf->len = sizeof(slab); } static void close_cb(uv_handle_t* handle) { CHECK_HANDLE(handle); ASSERT(1 == uv_is_closing(handle)); close_cb_called++; } static void cl_recv_cb(uv_udp_t* handle, ssize_t nread, const uv_buf_t* buf, const struct sockaddr* addr, unsigned flags) { CHECK_HANDLE(handle); ASSERT(flags == 0); if (nread < 0) { ASSERT(0 && "unexpected error"); } if (nread == 0) { /* Returning unused buffer */ /* Don't count towards cl_recv_cb_called */ ASSERT(addr == NULL); return; } ASSERT(addr != NULL); ASSERT(nread == 4); ASSERT(!memcmp("PONG", buf->base, nread)); cl_recv_cb_called++; uv_close((uv_handle_t*) handle, close_cb); } static void cl_send_cb(uv_udp_send_t* req, int status) { int r; ASSERT(req != NULL); ASSERT(status == 0); CHECK_HANDLE(req->handle); r = uv_udp_recv_start(req->handle, alloc_cb, cl_recv_cb); ASSERT(r == 0); cl_send_cb_called++; } static void sv_send_cb(uv_udp_send_t* req, int status) { ASSERT(req != NULL); ASSERT(status == 0); CHECK_HANDLE(req->handle); uv_close((uv_handle_t*) req->handle, close_cb); free(req); sv_send_cb_called++; } static void sv_recv_cb(uv_udp_t* handle, ssize_t nread, const uv_buf_t* rcvbuf, const struct sockaddr* addr, unsigned flags) { uv_udp_send_t* req; uv_buf_t sndbuf; int r; if (nread < 0) { ASSERT(0 && "unexpected error"); } if (nread == 0) { /* Returning unused buffer */ /* Don't count towards sv_recv_cb_called */ ASSERT(addr == NULL); return; } CHECK_HANDLE(handle); ASSERT(flags == 0); ASSERT(addr != NULL); ASSERT(nread == 4); ASSERT(!memcmp("PING", rcvbuf->base, nread)); /* FIXME? `uv_udp_recv_stop` does what it says: recv_cb is not called * anymore. That's problematic because the read buffer won't be returned * either... Not sure I like that but it's consistent with `uv_read_stop`. */ r = uv_udp_recv_stop(handle); ASSERT(r == 0); req = malloc(sizeof *req); ASSERT(req != NULL); sndbuf = uv_buf_init("PONG", 4); r = uv_udp_send(req, handle, &sndbuf, 1, addr, sv_send_cb); ASSERT(r == 0); sv_recv_cb_called++; } TEST_IMPL(udp_send_and_recv) { struct sockaddr_in addr; uv_udp_send_t req; uv_buf_t buf; int r; ASSERT(0 == uv_ip4_addr("0.0.0.0", TEST_PORT, &addr)); r = uv_udp_init(uv_default_loop(), &server); ASSERT(r == 0); r = uv_udp_bind(&server, (const struct sockaddr*) &addr, 0); ASSERT(r == 0); r = uv_udp_recv_start(&server, alloc_cb, sv_recv_cb); ASSERT(r == 0); ASSERT(0 == uv_ip4_addr("127.0.0.1", TEST_PORT, &addr)); r = uv_udp_init(uv_default_loop(), &client); ASSERT(r == 0); /* client sends "PING", expects "PONG" */ buf = uv_buf_init("PING", 4); r = uv_udp_send(&req, &client, &buf, 1, (const struct sockaddr*) &addr, cl_send_cb); ASSERT(r == 0); ASSERT(close_cb_called == 0); ASSERT(cl_send_cb_called == 0); ASSERT(cl_recv_cb_called == 0); ASSERT(sv_send_cb_called == 0); ASSERT(sv_recv_cb_called == 0); uv_run(uv_default_loop(), UV_RUN_DEFAULT); ASSERT(cl_send_cb_called == 1); ASSERT(cl_recv_cb_called == 1); ASSERT(sv_send_cb_called == 1); ASSERT(sv_recv_cb_called == 1); ASSERT(close_cb_called == 2); ASSERT(client.send_queue_size == 0); ASSERT(server.send_queue_size == 0); MAKE_VALGRIND_HAPPY(); return 0; }