tcpconnect.c revision 146251 
1/*-
2 * Copyright (c) 2004-2005 Robert N. M. Watson
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: head/tools/regression/netinet/tcpconnect/tcpconnect.c 146251 2005-05-16 00:54:47Z rwatson $
27 */
28
29#include <sys/types.h>
30#include <sys/socket.h>
31
32#include <netinet/in.h>
33
34#include <arpa/inet.h>
35
36#include <errno.h>
37#include <stdio.h>
38#include <stdlib.h>
39#include <string.h>
40#include <unistd.h>
41
42static void
43usage(void)
44{
45
46	fprintf(stderr, "tcpconnect server port\n");
47	fprintf(stderr, "tcpconnect client ip port count\n");
48	exit(-1);
49}
50
51static void
52tcpconnect_server(int argc, char *argv[])
53{
54	int listen_sock, accept_sock;
55	struct sockaddr_in sin;
56	char *dummy;
57	long port;
58
59	if (argc != 1)
60		usage();
61
62	bzero(&sin, sizeof(sin));
63	sin.sin_len = sizeof(sin);
64	sin.sin_family = AF_INET;
65	sin.sin_addr.s_addr = htonl(INADDR_ANY);
66
67	port = strtoul(argv[0], &dummy, 10);
68	if (port < 1 || port > 65535 || *dummy != '\0')
69		usage();
70	sin.sin_port = htons(port);
71
72	listen_sock = socket(PF_INET, SOCK_STREAM, 0);
73	if (listen_sock == -1)
74		errx(-1, "socket: %s", strerror(errno));
75
76	if (bind(listen_sock, (struct sockaddr *)&sin, sizeof(sin)) == -1)
77		errx(-1, "bind: %s", strerror(errno));
78
79	if (listen(listen_sock, -1) == -1)
80		errx(-1, "listen: %s", strerror(errno));
81
82	while (1) {
83		accept_sock = accept(listen_sock, NULL, NULL);
84		close(accept_sock);
85	}
86}
87
88static void
89tcpconnect_client(int argc, char *argv[])
90{
91	struct sockaddr_in sin;
92	long count, i, port;
93	char *dummy;
94	int sock;
95
96	if (argc != 3)
97		usage();
98
99	bzero(&sin, sizeof(sin));
100	sin.sin_len = sizeof(sin);
101	sin.sin_family = AF_INET;
102	if (inet_aton(argv[0], &sin.sin_addr) == 0)
103		errx(-1, "listen: %x", strerror(errno));
104
105	port = strtoul(argv[1], &dummy, 10);
106	if (port < 1 || port > 65535 || *dummy != '\0')
107		usage();
108	sin.sin_port = htons(port);
109
110	count = strtoul(argv[2], &dummy, 10);
111	if (count < 1 || count > 100000 || *dummy != '\0')
112		usage();
113
114	for (i = 0; i < count; i++) {
115		sock = socket(PF_INET, SOCK_STREAM, 0);
116		if (sock == -1)
117			errx(-1, "socket: %s", strerror(errno));
118
119#ifdef NONBLOCK
120		if (fcntl(sock, F_SETFL, O_NONBLOCK) != 0)
121			errx(-1, "fcntl(F_SETFL): %s", strerror(errno));
122
123		if (connect(sock, (struct sockaddr *)&sin, sizeof(sin)) == -1
124		    && errno != EINPROGRESS)
125			errx(-1, "connect: %s", strerror(errno));
126#else
127		if (connect(sock, (struct sockaddr *)&sin, sizeof(sin)) == -1)
128			errx(-1, "connect: %s", strerror(errno));
129#endif
130
131		close(sock);
132	}
133}
134
135int
136main(int argc, char *argv[])
137{
138
139	if (argc < 2)
140		usage();
141
142	if (strcmp(argv[1], "server") == 0)
143		tcpconnect_server(argc - 2, argv + 2);
144	else if (strcmp(argv[1], "client") == 0)
145		tcpconnect_client(argc - 2, argv + 2);
146	else
147		usage();
148
149	exit(0);
150}
151