Add tcpstream, a simple TCP stream generator that uses a pseudo-random

sequence to detect data corruption visible to an application.

2 files changed, 253 insertions, 0 deletions

diff --git a/tools/regression/netinet/tcpstream/Makefile b/tools/regression/netinet/tcpstream/Makefile
new file mode 100644
index 0000000..296eebb
--- /dev/null
+++ b/tools/regression/netinet/tcpstream/Makefile
@@ -0,0 +1,9 @@
+#
+# $FreeBSD$
+#
+
+CFLAGS+=	-Wall
+PROG=	tcpstream
+NOMAN=	yes
+
+.include <bsd.prog.mk>
diff --git a/tools/regression/netinet/tcpstream/tcpstream.c b/tools/regression/netinet/tcpstream/tcpstream.c
new file mode 100644
index 0000000..5417d08
--- /dev/null
+++ b/tools/regression/netinet/tcpstream/tcpstream.c
@@ -0,0 +1,244 @@
+/*-
+ * 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.
+ *
+ * $FreeBSD$
+ */
+
+/*
+ * tcpstream sets up a simple TCP client and server, and then streams a
+ * predictable pseudo-random byte sequence through it using variable block
+ * sizes.  The intent is to to detect corruption of data in the TCP stream.
+ */
+
+#include <sys/types.h>
+#include <sys/errno.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>
+
+#define	MAX_LOOPS	10240
+#define	MAX_LONGS	1024
+
+static void
+usage(void)
+{
+
+	fprintf(stderr, "tcpstream client [ip] [port] [seed]\n");
+	fprintf(stderr, "tcpstream server [port] [seed]\n");
+	exit(-1);
+}
+
+static void
+fill_buffer(long *buffer, int len)
+{
+	int i;
+
+	for (i = 0; i < len; i++)
+		buffer[i] = htonl(random());
+}
+
+static int
+check_buffer(long *buffer, int len)
+{
+	int i;
+
+	for (i = 0; i < len; i++) {
+		if (buffer[i] != htonl(random()))
+			return (0);
+	}
+	return (1);
+}
+
+static void
+tcpstream_client(struct sockaddr_in sin, long seed)
+{
+	long buffer[MAX_LONGS];
+	ssize_t len;
+	int i, j, sock;
+
+	srandom(seed);
+
+	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);
+	}
+
+	for (j = 0; j < MAX_LOOPS; j++) {
+		for (i = 0; i < MAX_LONGS; i++) {
+			fill_buffer(buffer, i);
+			len = send(sock, buffer, i * sizeof(long), 0);
+			if (len == -1) {
+				printf("%d bytes written of %d expected\n",
+				    len, i * sizeof(long));
+				fflush(stdout);
+				perror("send");
+				goto done;
+			}
+		}
+	}
+
+done:
+	close(sock);
+}
+
+static void
+tcpstream_server(struct sockaddr_in sin, long seed)
+{
+	int i, j, listen_sock, accept_sock;
+	struct sockaddr_in other_sin;
+	long buffer[MAX_LONGS];
+	socklen_t addrlen;
+	ssize_t len;
+
+	int input_byte_counter;
+
+	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) {
+		bzero(&other_sin, sizeof(other_sin));
+		addrlen = sizeof(other_sin);
+
+		accept_sock = accept(listen_sock, (struct sockaddr *)
+		    &other_sin, &addrlen);
+		if (accept_sock == -1) {
+			perror("accept");
+			continue;
+		}
+		printf("connection opened from %s:%d\n",
+		    inet_ntoa(other_sin.sin_addr), ntohs(other_sin.sin_port));
+		input_byte_counter = 0;
+
+		srandom(seed);
+
+		for (j = 0; j < MAX_LOOPS; j++) {
+			for (i = 0; i < MAX_LONGS; i++) {
+				len = recv(accept_sock, buffer,
+				    i * sizeof(long), MSG_WAITALL);
+				if (len != i * sizeof(long)) {
+					perror("recv");
+					goto done;
+				}
+				if (check_buffer(buffer, i) == 0) {
+					fprintf(stderr,
+    "Corruption in block beginning %d and ending %d\n", input_byte_counter,
+    input_byte_counter + len);
+					fprintf(stderr,
+    "Block size %d\n", i * sizeof(long));
+					goto done;
+				}
+				input_byte_counter += len;
+			}
+		}
+done:
+		printf("connection closed\n");
+		close(accept_sock);
+	}
+}
+
+int
+main(int argc, char *argv[])
+{
+	struct sockaddr_in sin;
+	long port, seed;
+	char *dummy;
+
+	if (argc < 2)
+		usage();
+	if (strcmp(argv[1], "client") == 0) {
+		if (argc != 5)
+			usage();
+
+		bzero(&sin, sizeof(sin));
+		sin.sin_len = sizeof(sin);
+		sin.sin_family = AF_INET;
+
+		if (inet_aton(argv[2], &sin.sin_addr) != 1) {
+			errno = EINVAL;
+			perror(argv[2]);
+			exit(-1);
+		}
+
+		port = strtoul(argv[3], &dummy, 10);
+		if (port < 1 || port > 65535 || *dummy != '\0')
+			usage();
+		sin.sin_port = htons(port);
+
+		seed = strtoul(argv[4], &dummy, 10);
+		if (*dummy != '\0')
+			usage();
+
+		tcpstream_client(sin, seed);
+
+	} else if (strcmp(argv[1], "server") == 0) {
+		if (argc != 4)
+			usage();
+
+		bzero(&sin, sizeof(sin));
+		sin.sin_len = sizeof(sin);
+		sin.sin_family = AF_INET;
+		sin.sin_addr.s_addr = INADDR_ANY;
+
+		port = strtoul(argv[2], &dummy, 10);
+		if (port < 1 || port > 65535 || *dummy != '\0')
+			usage();
+		sin.sin_port = htons(port);
+
+		seed = strtoul(argv[3], &dummy, 10);
+		if (*dummy != '\0')
+			usage();
+
+		tcpstream_server(sin, seed);
+	} else
+		usage();
+
+	return (0);
+}