/* 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 <stdio.h> #include <string.h> static struct sockaddr_in addr; static uv_tcp_t tcp_server; static uv_tcp_t tcp_outgoing[2]; static uv_tcp_t tcp_incoming[ARRAY_SIZE(tcp_outgoing)]; static uv_connect_t connect_reqs[ARRAY_SIZE(tcp_outgoing)]; static uv_tcp_t tcp_check; static uv_connect_t tcp_check_req; static uv_write_t write_reqs[ARRAY_SIZE(tcp_outgoing)]; static unsigned int got_connections; static unsigned int close_cb_called; static unsigned int write_cb_called; static unsigned int read_cb_called; static void close_cb(uv_handle_t* handle) { close_cb_called++; } static void write_cb(uv_write_t* req, int status) { ASSERT(status == 0); write_cb_called++; } static void connect_cb(uv_connect_t* req, int status) { unsigned int i; uv_buf_t buf; uv_stream_t* outgoing; if (req == &tcp_check_req) { ASSERT(status != 0); /* Close check and incoming[0], time to finish test */ uv_close((uv_handle_t*) &tcp_incoming[0], close_cb); uv_close((uv_handle_t*) &tcp_check, close_cb); return; } ASSERT(status == 0); ASSERT(connect_reqs <= req); ASSERT(req <= connect_reqs + ARRAY_SIZE(connect_reqs)); i = req - connect_reqs; buf = uv_buf_init("x", 1); outgoing = (uv_stream_t*) &tcp_outgoing[i]; ASSERT(0 == uv_write(&write_reqs[i], outgoing, &buf, 1, write_cb)); } static uv_buf_t alloc_cb(uv_handle_t* handle, size_t suggested_size) { static char buf[1]; return uv_buf_init(buf, sizeof(buf)); } static void read_cb(uv_stream_t* stream, ssize_t nread, uv_buf_t b) { uv_loop_t* loop; unsigned int i; /* Only first stream should receive read events */ ASSERT(stream == (uv_stream_t*) &tcp_incoming[0]); ASSERT(0 == uv_read_stop(stream)); ASSERT(1 == nread); loop = stream->loop; read_cb_called++; /* Close all active incomings, except current one */ for (i = 1; i < got_connections; i++) uv_close((uv_handle_t*) &tcp_incoming[i], close_cb); /* Create new fd that should be one of the closed incomings */ ASSERT(0 == uv_tcp_init(loop, &tcp_check)); ASSERT(0 == uv_tcp_connect(&tcp_check_req, &tcp_check, addr, connect_cb)); ASSERT(0 == uv_read_start((uv_stream_t*) &tcp_check, alloc_cb, read_cb)); /* Close server, so no one will connect to it */ uv_close((uv_handle_t*) &tcp_server, close_cb); } static void connection_cb(uv_stream_t* server, int status) { unsigned int i; uv_tcp_t* incoming; ASSERT(server == (uv_stream_t*) &tcp_server); /* Ignore tcp_check connection */ if (got_connections == ARRAY_SIZE(tcp_incoming)) return; /* Accept everyone */ incoming = &tcp_incoming[got_connections++]; ASSERT(0 == uv_tcp_init(server->loop, incoming)); ASSERT(0 == uv_accept(server, (uv_stream_t*) incoming)); if (got_connections != ARRAY_SIZE(tcp_incoming)) return; /* Once all clients are accepted - start reading */ for (i = 0; i < ARRAY_SIZE(tcp_incoming); i++) { incoming = &tcp_incoming[i]; ASSERT(0 == uv_read_start((uv_stream_t*) incoming, alloc_cb, read_cb)); } } TEST_IMPL(tcp_close_accept) { unsigned int i; uv_loop_t* loop; uv_tcp_t* client; /* * A little explanation of what goes on below: * * We'll create server and connect to it using two clients, each writing one * byte once connected. * * When all clients will be accepted by server - we'll start reading from them * and, on first client's first byte, will close second client and server. * After that, we'll immediately initiate new connection to server using * tcp_check handle (thus, reusing fd from second client). * * In this situation uv__io_poll()'s event list should still contain read * event for second client, and, if not cleaned up properly, `tcp_check` will * receive stale event of second incoming and invoke `connect_cb` with zero * status. */ loop = uv_default_loop(); addr = uv_ip4_addr("0.0.0.0", TEST_PORT); ASSERT(0 == uv_tcp_init(loop, &tcp_server)); ASSERT(0 == uv_tcp_bind(&tcp_server, addr)); ASSERT(0 == uv_listen((uv_stream_t*) &tcp_server, ARRAY_SIZE(tcp_outgoing), connection_cb)); for (i = 0; i < ARRAY_SIZE(tcp_outgoing); i++) { client = tcp_outgoing + i; ASSERT(0 == uv_tcp_init(loop, client)); ASSERT(0 == uv_tcp_connect(&connect_reqs[i], client, addr, connect_cb)); } uv_run(loop, UV_RUN_DEFAULT); ASSERT(ARRAY_SIZE(tcp_outgoing) == got_connections); ASSERT((ARRAY_SIZE(tcp_outgoing) + 2) == close_cb_called); ASSERT(ARRAY_SIZE(tcp_outgoing) == write_cb_called); ASSERT(1 == read_cb_called); MAKE_VALGRIND_HAPPY(); return 0; }