2 * Copyright (c) 2005 Robert N. M. Watson
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
30 * Back end to a variety of TCP-related benchmarks. This program accepts TCP
31 * connections on a port, and echoes all received data back to the sender.
32 * It is capable of handling only one connection at a time out of a single
35 #include <sys/types.h>
36 #include <sys/socket.h>
38 #include <netinet/in.h>
40 #include <arpa/inet.h>
48 * Simple micro-benchmark to see how many connections/second can be created
49 * in a serialized fashion against a given server. A timer signal is used
50 * to interrupt the loop and assess the cost, and uses a fixed maximum
51 * buffer size. It makes no attempt to time out old connections.
53 #define BUFFERSIZE 128*1024
57 handle_connection(int accept_sock)
59 u_char buffer[BUFFERSIZE];
60 ssize_t len, recvlen, sofar;
63 s = accept(accept_sock, NULL, NULL);
70 recvlen = recv(s, buffer, BUFFERSIZE, 0);
71 if (recvlen < 0 || recvlen == 0) {
76 while (sofar < recvlen) {
77 len = send(s, buffer + sofar, recvlen - sofar, 0);
88 main(int argc, char *argv[])
90 struct sockaddr_in sin;
93 accept_sock = socket(PF_INET, SOCK_STREAM, 0);
95 err(-1, "socket(PF_INET, SOCKET_STREAM, 0)");
97 bzero(&sin, sizeof(sin));
98 sin.sin_family = AF_INET;
99 sin.sin_len = sizeof(sin);
100 sin.sin_addr.s_addr = INADDR_ANY;
101 sin.sin_port = htons(PORT);
103 if (bind(accept_sock, (struct sockaddr *)&sin, sizeof(sin)) < 0)
106 if (listen(accept_sock, -1) < 0)
110 handle_connection(accept_sock);