| /* 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 <stdlib.h> |
| #include <string.h> |
| |
| #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 uv_buf_t alloc_cb(uv_handle_t* handle, size_t suggested_size) { |
| static char slab[65536]; |
| |
| CHECK_HANDLE(handle); |
| ASSERT(suggested_size <= sizeof slab); |
| |
| return uv_buf_init(slab, sizeof slab); |
| } |
| |
| |
| static void close_cb(uv_handle_t* handle) { |
| CHECK_HANDLE(handle); |
| ASSERT(uv_is_closing(handle)); |
| close_cb_called++; |
| } |
| |
| |
| static void cl_recv_cb(uv_udp_t* handle, |
| ssize_t nread, |
| uv_buf_t buf, |
| 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, |
| uv_buf_t buf, |
| struct sockaddr* addr, |
| unsigned flags) { |
| uv_udp_send_t* req; |
| 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", buf.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); |
| |
| buf = uv_buf_init("PONG", 4); |
| |
| r = uv_udp_send(req, |
| handle, |
| &buf, |
| 1, |
| *(struct sockaddr_in*)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; |
| |
| addr = uv_ip4_addr("0.0.0.0", TEST_PORT); |
| |
| r = uv_udp_init(uv_default_loop(), &server); |
| ASSERT(r == 0); |
| |
| r = uv_udp_bind(&server, addr, 0); |
| ASSERT(r == 0); |
| |
| r = uv_udp_recv_start(&server, alloc_cb, sv_recv_cb); |
| ASSERT(r == 0); |
| |
| addr = uv_ip4_addr("127.0.0.1", TEST_PORT); |
| |
| 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, 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); |
| |
| MAKE_VALGRIND_HAPPY(); |
| return 0; |
| } |