2 * This file is part of net-yy-inet strace test.
4 * Copyright (c) 2014-2016 Dmitry V. Levin <ldv@altlinux.org>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 #include <sys/socket.h>
37 #include <netinet/in.h>
38 #include <netinet/tcp.h>
39 #include <arpa/inet.h>
44 skip_if_unavailable("/proc/self/fd/");
46 const struct sockaddr_in addr = {
47 .sin_family = AF_INET,
48 .sin_addr.s_addr = htonl(INADDR_LOOPBACK)
50 struct sockaddr * const listen_sa = tail_memdup(&addr, sizeof(addr));
51 TAIL_ALLOC_OBJECT_CONST_PTR(socklen_t, len);
54 const int listen_fd = socket(AF_INET, SOCK_STREAM, 0);
56 perror_msg_and_skip("socket");
57 const unsigned long listen_inode = inode_of_sockfd(listen_fd);
58 printf("socket(AF_INET, SOCK_STREAM, IPPROTO_IP) = %d<TCP:[%lu]>\n",
59 listen_fd, listen_inode);
61 if (bind(listen_fd, listen_sa, *len))
62 perror_msg_and_skip("bind");
63 printf("bind(%d<TCP:[%lu]>, {sa_family=AF_INET, sin_port=htons(0)"
64 ", sin_addr=inet_addr(\"127.0.0.1\")}, %u) = 0\n",
65 listen_fd, listen_inode, (unsigned) *len);
67 if (listen(listen_fd, 1))
68 perror_msg_and_skip("listen");
69 printf("listen(%d<TCP:[%lu]>, 1) = 0\n", listen_fd, listen_inode);
71 memset(listen_sa, 0, sizeof(addr));
73 if (getsockname(listen_fd, listen_sa, len))
74 perror_msg_and_fail("getsockname");
75 const unsigned int listen_port =
76 ntohs(((struct sockaddr_in *) listen_sa) -> sin_port);
77 printf("getsockname(%d<TCP:[127.0.0.1:%u]>, {sa_family=AF_INET"
78 ", sin_port=htons(%u), sin_addr=inet_addr(\"127.0.0.1\")}"
80 listen_fd, listen_port, listen_port, (unsigned) *len);
82 TAIL_ALLOC_OBJECT_CONST_PTR(unsigned int, optval);
83 *len = sizeof(*optval);
84 if (getsockopt(listen_fd, SOL_TCP, TCP_MAXSEG, optval, len))
85 perror_msg_and_fail("getsockopt");
86 printf("getsockopt(%d<TCP:[127.0.0.1:%u]>, SOL_TCP, TCP_MAXSEG"
87 ", [%u], [%u]) = 0\n",
88 listen_fd, listen_port, *optval, (unsigned) *len);
90 const int connect_fd = socket(AF_INET, SOCK_STREAM, 0);
92 perror_msg_and_fail("socket");
93 const unsigned long connect_inode = inode_of_sockfd(connect_fd);
94 printf("socket(AF_INET, SOCK_STREAM, IPPROTO_IP) = %d<TCP:[%lu]>\n",
95 connect_fd, connect_inode);
98 if (connect(connect_fd, listen_sa, *len))
99 perror_msg_and_fail("connect");
100 printf("connect(%d<TCP:[%lu]>, {sa_family=AF_INET, sin_port=htons(%u)"
101 ", sin_addr=inet_addr(\"127.0.0.1\")}, %u) = 0\n",
102 connect_fd, connect_inode, listen_port, (unsigned) *len);
104 struct sockaddr * const accept_sa = tail_alloc(sizeof(addr));
105 memset(accept_sa, 0, sizeof(addr));
107 const int accept_fd = accept(listen_fd, accept_sa, len);
109 perror_msg_and_fail("accept");
110 const unsigned int connect_port =
111 ntohs(((struct sockaddr_in *) accept_sa) -> sin_port);
112 printf("accept(%d<TCP:[127.0.0.1:%u]>, {sa_family=AF_INET"
113 ", sin_port=htons(%u), sin_addr=inet_addr(\"127.0.0.1\")}"
114 ", [%u]) = %d<TCP:[127.0.0.1:%u->127.0.0.1:%u]>\n",
115 listen_fd, listen_port, connect_port, (unsigned) *len,
116 accept_fd, listen_port, connect_port);
118 memset(accept_sa, 0, sizeof(addr));
120 if (getpeername(accept_fd, accept_sa, len))
121 perror_msg_and_fail("getpeername");
122 printf("getpeername(%d<TCP:[127.0.0.1:%u->127.0.0.1:%u]>"
123 ", {sa_family=AF_INET, sin_port=htons(%u)"
124 ", sin_addr=inet_addr(\"127.0.0.1\")}, [%u]) = 0\n",
125 accept_fd, listen_port, connect_port, connect_port,
128 memset(listen_sa, 0, sizeof(addr));
130 if (getpeername(connect_fd, listen_sa, len))
131 perror_msg_and_fail("getpeername");
132 printf("getpeername(%d<TCP:[127.0.0.1:%u->127.0.0.1:%u]>"
133 ", {sa_family=AF_INET, sin_port=htons(%u)"
134 ", sin_addr=inet_addr(\"127.0.0.1\")}, [%u]) = 0\n",
135 connect_fd, connect_port, listen_port, listen_port,
138 *len = sizeof(*optval);
139 if (setsockopt(connect_fd, SOL_TCP, TCP_MAXSEG, optval, *len))
140 perror_msg_and_fail("setsockopt");
141 printf("setsockopt(%d<TCP:[127.0.0.1:%u->127.0.0.1:%u]>"
142 ", SOL_TCP, TCP_MAXSEG, [%u], %u) = 0\n",
143 connect_fd, connect_port, listen_port, *optval,
146 char text[] = "text";
147 assert(sendto(connect_fd, text, sizeof(text) - 1,
148 MSG_DONTROUTE | MSG_DONTWAIT, NULL, 0) == sizeof(text) - 1);
149 printf("sendto(%d<TCP:[127.0.0.1:%u->127.0.0.1:%u]>, \"%s\", %u"
150 ", MSG_DONTROUTE|MSG_DONTWAIT, NULL, 0) = %u\n",
151 connect_fd, connect_port, listen_port, text,
152 (unsigned) sizeof(text) - 1, (unsigned) sizeof(text) - 1);
154 assert(close(connect_fd) == 0);
155 printf("close(%d<TCP:[127.0.0.1:%u->127.0.0.1:%u]>) = 0\n",
156 connect_fd, connect_port, listen_port);
158 assert(recvfrom(accept_fd, text, sizeof(text) - 1, MSG_WAITALL,
159 NULL, NULL) == sizeof(text) - 1);
160 printf("recvfrom(%d<TCP:[127.0.0.1:%u->127.0.0.1:%u]>, \"%s\", %u"
161 ", MSG_WAITALL, NULL, NULL) = %u\n",
162 accept_fd, listen_port, connect_port, text,
163 (unsigned) sizeof(text) - 1, (unsigned) sizeof(text) - 1);
165 assert(close(accept_fd) == 0);
166 printf("close(%d<TCP:[127.0.0.1:%u->127.0.0.1:%u]>) = 0\n",
167 accept_fd, listen_port, connect_port);
169 assert(close(listen_fd) == 0);
170 printf("close(%d<TCP:[127.0.0.1:%u]>) = 0\n",
171 listen_fd, listen_port);
173 puts("+++ exited with 0 +++");