diff options
author | Robert Watson <rwatson@FreeBSD.org> | 2004-10-09 20:58:28 +0000 |
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committer | Robert Watson <rwatson@FreeBSD.org> | 2004-10-09 20:58:28 +0000 |
commit | 6a671583a4bb96e0aaeb8f1fcdaee1f659342bc2 (patch) | |
tree | 6bd4523eb309bfc7abc495797e82b2d66f9e3e16 /tools/regression | |
parent | 894d8d3c032547557ab8201925272094ec304d48 (diff) | |
download | src-6a671583a4bb96e0aaeb8f1fcdaee1f659342bc2.tar.gz src-6a671583a4bb96e0aaeb8f1fcdaee1f659342bc2.zip |
Add a simple C-based TCP connection generator, which generates and
closes the specified number of TCP connections sequentially and
synchronously. Useful for trying to trigger races in the accept
code.
Notes
Notes:
svn path=/head/; revision=136337
Diffstat (limited to 'tools/regression')
-rw-r--r-- | tools/regression/netinet/tcpconnect/Makefile | 8 | ||||
-rw-r--r-- | tools/regression/netinet/tcpconnect/tcpconnect.c | 152 |
2 files changed, 160 insertions, 0 deletions
diff --git a/tools/regression/netinet/tcpconnect/Makefile b/tools/regression/netinet/tcpconnect/Makefile new file mode 100644 index 000000000000..abc9535e93e6 --- /dev/null +++ b/tools/regression/netinet/tcpconnect/Makefile @@ -0,0 +1,8 @@ +# +# $FreeBSD$ +# + +PROG= tcpconnect +NOMAN= yes + +.include <bsd.prog.mk> diff --git a/tools/regression/netinet/tcpconnect/tcpconnect.c b/tools/regression/netinet/tcpconnect/tcpconnect.c new file mode 100644 index 000000000000..5738e63bee49 --- /dev/null +++ b/tools/regression/netinet/tcpconnect/tcpconnect.c @@ -0,0 +1,152 @@ +/*- + * Copyright (c) 2004 Robert N. M. Watson + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#include <sys/types.h> +#include <sys/socket.h> + +#include <netinet/in.h> + +#include <arpa/inet.h> + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +static void +usage(volid) +{ + + fprintf(stderr, "tcpconnect server port\n"); + fprintf(stderr, "tcpconnect client ip port count\n"); + exit(-1); +} + +static void +tcpconnect_server(int argc, char *argv[]) +{ + int listen_sock, accept_sock; + struct sockaddr_in sin; + char *dummy; + long port; + + if (argc != 1) + usage(); + + bzero(&sin, sizeof(sin)); + sin.sin_len = sizeof(sin); + sin.sin_family = AF_INET; + sin.sin_addr.s_addr = htonl(INADDR_ANY); + + port = strtoul(argv[0], &dummy, 10); + if (port < 1 || port > 65535 || *dummy != '\0') + usage(); + sin.sin_port = htons(port); + + listen_sock = socket(PF_INET, SOCK_STREAM, 0); + if (listen_sock == -1) { + perror("socket"); + exit(-1); + } + + if (bind(listen_sock, (struct sockaddr *)&sin, sizeof(sin)) == -1) { + perror("bind"); + exit(-1); + } + + if (listen(listen_sock, -1) == -1) { + perror("listen"); + exit(1); + } + + while (1) { + accept_sock = accept(listen_sock, NULL, NULL); + close(accept_sock); + } +} + +static void +tcpconnect_client(int argc, char *argv[]) +{ + struct sockaddr_in sin; + long count, i, port; + char *dummy; + int sock; + + if (argc != 3) + usage(); + + bzero(&sin, sizeof(sin)); + sin.sin_len = sizeof(sin); + sin.sin_family = AF_INET; + if (inet_aton(argv[0], &sin.sin_addr) == 0) { + perror(argv[0]); + exit(-1); + } + + port = strtoul(argv[1], &dummy, 10); + if (port < 1 || port > 65535 || *dummy != '\0') + usage(); + sin.sin_port = htons(port); + + count = strtoul(argv[2], &dummy, 10); + if (count < 1 || count > 100000 || *dummy != '\0') + usage(); + + for (i = 0; i < count; i++) { + sock = socket(PF_INET, SOCK_STREAM, 0); + if (sock == -1) { + perror("socket"); + exit(-1); + } + + if (connect(sock, (struct sockaddr *)&sin, sizeof(sin)) == -1) { + perror("connect"); + exit(-1); + } + + close(sock); + } +} + +int +main(int argc, char *argv[]) +{ + + if (argc < 2) + usage(); + + if (strcmp(argv[1], "server") == 0) + tcpconnect_server(argc - 2, argv + 2); + else if (strcmp(argv[1], "client") == 0) + tcpconnect_client(argc - 2, argv + 2); + else + usage(); + + exit(0); +} |