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 28 typedef struct { 29 uv_tcp_t handle; 30 uv_shutdown_t shutdown_req; 31 } conn_rec; 32 33 static uv_tcp_t tcp_server; 34 35 static void connection_cb(uv_stream_t* stream, int status); 36 static void alloc_cb(uv_handle_t* handle, size_t suggested_size, uv_buf_t* buf); 37 static void read_cb(uv_stream_t* stream, ssize_t nread, const uv_buf_t* buf); 38 static void shutdown_cb(uv_shutdown_t* req, int status); 39 static void close_cb(uv_handle_t* handle); 40 41 42 static void connection_cb(uv_stream_t* stream, int status) { 43 conn_rec* conn; 44 int r; 45 46 ASSERT(status == 0); 47 ASSERT(stream == (uv_stream_t*)&tcp_server); 48 49 conn = malloc(sizeof *conn); 50 ASSERT(conn != NULL); 51 52 r = uv_tcp_init(stream->loop, &conn->handle); 53 ASSERT(r == 0); 54 55 r = uv_accept(stream, (uv_stream_t*)&conn->handle); 56 ASSERT(r == 0); 57 58 r = uv_read_start((uv_stream_t*)&conn->handle, alloc_cb, read_cb); 59 ASSERT(r == 0); 60 } 61 62 63 static void alloc_cb(uv_handle_t* handle, 64 size_t suggested_size, 65 uv_buf_t* buf) { 66 static char slab[65536]; 67 buf->base = slab; 68 buf->len = sizeof(slab); 69 } 70 71 72 static void read_cb(uv_stream_t* stream, ssize_t nread, const uv_buf_t* buf) { 73 conn_rec* conn; 74 int r; 75 76 if (nread >= 0) 77 return; 78 79 ASSERT(nread == UV_EOF); 80 81 conn = container_of(stream, conn_rec, handle); 82 83 r = uv_shutdown(&conn->shutdown_req, stream, shutdown_cb); 84 ASSERT(r == 0); 85 } 86 87 88 static void shutdown_cb(uv_shutdown_t* req, int status) { 89 conn_rec* conn = container_of(req, conn_rec, shutdown_req); 90 uv_close((uv_handle_t*)&conn->handle, close_cb); 91 } 92 93 94 static void close_cb(uv_handle_t* handle) { 95 conn_rec* conn = container_of(handle, conn_rec, handle); 96 free(conn); 97 } 98 99 100 HELPER_IMPL(tcp4_blackhole_server) { 101 struct sockaddr_in addr; 102 uv_loop_t* loop; 103 int r; 104 105 loop = uv_default_loop(); 106 ASSERT(0 == uv_ip4_addr("127.0.0.1", TEST_PORT, &addr)); 107 108 r = uv_tcp_init(loop, &tcp_server); 109 ASSERT(r == 0); 110 111 r = uv_tcp_bind(&tcp_server, (const struct sockaddr*) &addr, 0); 112 ASSERT(r == 0); 113 114 r = uv_listen((uv_stream_t*)&tcp_server, 128, connection_cb); 115 ASSERT(r == 0); 116 117 r = uv_run(loop, UV_RUN_DEFAULT); 118 ASSERT(0 && "Blackhole server dropped out of event loop."); 119 120 return 0; 121 } 122