1 | /* Copyright libuv project 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 cl_recv_cb_called; |
37 | |
38 | static int sv_send_cb_called; |
39 | static int sv_recv_cb_called; |
40 | |
41 | static int close_cb_called; |
42 | |
43 | |
44 | static void sv_alloc_cb(uv_handle_t* handle, |
45 | size_t suggested_size, |
46 | uv_buf_t* buf) { |
47 | static char slab[65536]; |
48 | CHECK_HANDLE(handle); |
49 | buf->base = slab; |
50 | buf->len = sizeof(slab); |
51 | } |
52 | |
53 | |
54 | static void cl_alloc_cb(uv_handle_t* handle, |
55 | size_t suggested_size, |
56 | uv_buf_t* buf) { |
57 | /* Do nothing, recv_cb should be called with UV_ENOBUFS. */ |
58 | } |
59 | |
60 | |
61 | static void close_cb(uv_handle_t* handle) { |
62 | CHECK_HANDLE(handle); |
63 | ASSERT(1 == uv_is_closing(handle)); |
64 | close_cb_called++; |
65 | } |
66 | |
67 | |
68 | static void cl_recv_cb(uv_udp_t* handle, |
69 | ssize_t nread, |
70 | const uv_buf_t* buf, |
71 | const struct sockaddr* addr, |
72 | unsigned flags) { |
73 | CHECK_HANDLE(handle); |
74 | ASSERT(flags == 0); |
75 | ASSERT(nread == UV_ENOBUFS); |
76 | |
77 | cl_recv_cb_called++; |
78 | |
79 | uv_close((uv_handle_t*) handle, close_cb); |
80 | } |
81 | |
82 | |
83 | static void cl_send_cb(uv_udp_send_t* req, int status) { |
84 | int r; |
85 | |
86 | ASSERT(req != NULL); |
87 | ASSERT(status == 0); |
88 | CHECK_HANDLE(req->handle); |
89 | |
90 | r = uv_udp_recv_start(req->handle, cl_alloc_cb, cl_recv_cb); |
91 | ASSERT(r == 0); |
92 | |
93 | cl_send_cb_called++; |
94 | } |
95 | |
96 | |
97 | static void sv_send_cb(uv_udp_send_t* req, int status) { |
98 | ASSERT(req != NULL); |
99 | ASSERT(status == 0); |
100 | CHECK_HANDLE(req->handle); |
101 | |
102 | uv_close((uv_handle_t*) req->handle, close_cb); |
103 | free(req); |
104 | |
105 | sv_send_cb_called++; |
106 | } |
107 | |
108 | |
109 | static void sv_recv_cb(uv_udp_t* handle, |
110 | ssize_t nread, |
111 | const uv_buf_t* rcvbuf, |
112 | const struct sockaddr* addr, |
113 | unsigned flags) { |
114 | uv_udp_send_t* req; |
115 | uv_buf_t sndbuf; |
116 | int r; |
117 | |
118 | if (nread < 0) { |
119 | ASSERT(0 && "unexpected error" ); |
120 | } |
121 | |
122 | if (nread == 0) { |
123 | /* Returning unused buffer. Don't count towards sv_recv_cb_called */ |
124 | ASSERT(addr == NULL); |
125 | return; |
126 | } |
127 | |
128 | CHECK_HANDLE(handle); |
129 | ASSERT(flags == 0); |
130 | |
131 | ASSERT(addr != NULL); |
132 | ASSERT(nread == 4); |
133 | ASSERT(!memcmp("PING" , rcvbuf->base, nread)); |
134 | |
135 | r = uv_udp_recv_stop(handle); |
136 | ASSERT(r == 0); |
137 | |
138 | req = malloc(sizeof *req); |
139 | ASSERT(req != NULL); |
140 | |
141 | sndbuf = uv_buf_init("PONG" , 4); |
142 | r = uv_udp_send(req, handle, &sndbuf, 1, addr, sv_send_cb); |
143 | ASSERT(r == 0); |
144 | |
145 | sv_recv_cb_called++; |
146 | } |
147 | |
148 | |
149 | TEST_IMPL(udp_alloc_cb_fail) { |
150 | struct sockaddr_in addr; |
151 | uv_udp_send_t req; |
152 | uv_buf_t buf; |
153 | int r; |
154 | |
155 | ASSERT(0 == uv_ip4_addr("0.0.0.0" , TEST_PORT, &addr)); |
156 | |
157 | r = uv_udp_init(uv_default_loop(), &server); |
158 | ASSERT(r == 0); |
159 | |
160 | r = uv_udp_bind(&server, (const struct sockaddr*) &addr, 0); |
161 | ASSERT(r == 0); |
162 | |
163 | r = uv_udp_recv_start(&server, sv_alloc_cb, sv_recv_cb); |
164 | ASSERT(r == 0); |
165 | |
166 | ASSERT(0 == uv_ip4_addr("127.0.0.1" , TEST_PORT, &addr)); |
167 | |
168 | r = uv_udp_init(uv_default_loop(), &client); |
169 | ASSERT(r == 0); |
170 | |
171 | buf = uv_buf_init("PING" , 4); |
172 | r = uv_udp_send(&req, |
173 | &client, |
174 | &buf, |
175 | 1, |
176 | (const struct sockaddr*) &addr, |
177 | cl_send_cb); |
178 | ASSERT(r == 0); |
179 | |
180 | ASSERT(close_cb_called == 0); |
181 | ASSERT(cl_send_cb_called == 0); |
182 | ASSERT(cl_recv_cb_called == 0); |
183 | ASSERT(sv_send_cb_called == 0); |
184 | ASSERT(sv_recv_cb_called == 0); |
185 | |
186 | uv_run(uv_default_loop(), UV_RUN_DEFAULT); |
187 | |
188 | ASSERT(cl_send_cb_called == 1); |
189 | ASSERT(cl_recv_cb_called == 1); |
190 | ASSERT(sv_send_cb_called == 1); |
191 | ASSERT(sv_recv_cb_called == 1); |
192 | ASSERT(close_cb_called == 2); |
193 | |
194 | MAKE_VALGRIND_HAPPY(); |
195 | return 0; |
196 | } |
197 | |