1 /* Copyright Joyent, Inc. and other Node contributors. All rights reserved. 2 * 3 * Permission is hereby granted, free of charge, to any person obtaining a copy 4 * of this software and associated documentation files (the "Software"), to 5 * deal in the Software without restriction, including without limitation the 6 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or 7 * sell copies of the Software, and to permit persons to whom the Software is 8 * furnished to do so, subject to the following conditions: 9 * 10 * The above copyright notice and this permission notice shall be included in 11 * all copies or substantial portions of the Software. 12 * 13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 16 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 17 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 18 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 19 * IN THE SOFTWARE. 20 */ 21 22 #include "uv.h" 23 #include "task.h" 24 25 #include <stdio.h> 26 #include <stdlib.h> 27 #include <string.h> 28 29 #define CHECK_HANDLE(handle) \ 30 ASSERT((uv_udp_t*)(handle) == &server || (uv_udp_t*)(handle) == &client) 31 32 static uv_udp_t server; 33 static uv_udp_t client; 34 35 static int cl_send_cb_called; 36 static int sv_recv_cb_called; 37 static int close_cb_called; 38 39 40 static void alloc_cb(uv_handle_t* handle, 41 size_t suggested_size, 42 uv_buf_t* buf) { 43 static char slab[65536]; 44 CHECK_HANDLE(handle); 45 ASSERT(suggested_size <= sizeof(slab)); 46 buf->base = slab; 47 buf->len = sizeof(slab); 48 } 49 50 51 static void close_cb(uv_handle_t* handle) { 52 CHECK_HANDLE(handle); 53 ASSERT(1 == uv_is_closing(handle)); 54 close_cb_called++; 55 } 56 57 58 static void cl_send_cb(uv_udp_send_t* req, int status) { 59 ASSERT_NOT_NULL(req); 60 ASSERT(status == 0); 61 CHECK_HANDLE(req->handle); 62 63 cl_send_cb_called++; 64 } 65 66 67 static void sv_recv_cb(uv_udp_t* handle, 68 ssize_t nread, 69 const uv_buf_t* rcvbuf, 70 const struct sockaddr* addr, 71 unsigned flags) { 72 if (nread < 0) { 73 ASSERT(0 && "unexpected error"); 74 } 75 76 if (nread == 0) { 77 /* Returning unused buffer. Don't count towards sv_recv_cb_called */ 78 ASSERT_NULL(addr); 79 return; 80 } 81 82 CHECK_HANDLE(handle); 83 ASSERT(flags == 0); 84 85 ASSERT_NOT_NULL(addr); 86 ASSERT(nread == 4); 87 ASSERT(memcmp("PING", rcvbuf->base, nread) == 0 || 88 memcmp("PANG", rcvbuf->base, nread) == 0); 89 90 if (++sv_recv_cb_called == 2) { 91 uv_close((uv_handle_t*) &server, close_cb); 92 uv_close((uv_handle_t*) &client, close_cb); 93 } 94 } 95 96 97 TEST_IMPL(udp_send_immediate) { 98 struct sockaddr_in addr; 99 uv_udp_send_t req1, req2; 100 uv_buf_t buf; 101 int r; 102 103 ASSERT(0 == uv_ip4_addr("0.0.0.0", TEST_PORT, &addr)); 104 105 r = uv_udp_init(uv_default_loop(), &server); 106 ASSERT(r == 0); 107 108 r = uv_udp_bind(&server, (const struct sockaddr*) &addr, 0); 109 ASSERT(r == 0); 110 111 r = uv_udp_recv_start(&server, alloc_cb, sv_recv_cb); 112 ASSERT(r == 0); 113 114 ASSERT(0 == uv_ip4_addr("127.0.0.1", TEST_PORT, &addr)); 115 116 r = uv_udp_init(uv_default_loop(), &client); 117 ASSERT(r == 0); 118 119 /* client sends "PING", then "PANG" */ 120 buf = uv_buf_init("PING", 4); 121 122 r = uv_udp_send(&req1, 123 &client, 124 &buf, 125 1, 126 (const struct sockaddr*) &addr, 127 cl_send_cb); 128 ASSERT(r == 0); 129 130 buf = uv_buf_init("PANG", 4); 131 132 r = uv_udp_send(&req2, 133 &client, 134 &buf, 135 1, 136 (const struct sockaddr*) &addr, 137 cl_send_cb); 138 ASSERT(r == 0); 139 140 uv_run(uv_default_loop(), UV_RUN_DEFAULT); 141 142 ASSERT(cl_send_cb_called == 2); 143 ASSERT(sv_recv_cb_called == 2); 144 ASSERT(close_cb_called == 2); 145 146 MAKE_VALGRIND_HAPPY(); 147 return 0; 148 } 149