1 files changed, 73 insertions, 0 deletions
diff --git a/tools/tcp.c b/tools/tcp.c
new file mode 100644
index 0000000..e78b588
--- /dev/null
+++ b/tools/tcp.c
@@ -0,0 +1,73 @@
+/*	@(#)tcp.c	1.4 99/02/11 Connectathon Testsuite	*/
+/*
+ *  client for simple tcp ping program.
+ *  open connection with server, who will echo request back.
+ */
+#define TCP_PORT        3456
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netdb.h>
+
+static void
+xxit(s)
+	char *s;
+{
+	perror(s);
+	exit(1);
+}
+
+int
+main(argc, argv)
+	int argc;
+	char **argv;
+{
+	int s, len, ret;
+	struct sockaddr_in addr;        /* socket address */
+	size_t addrlen = sizeof(struct sockaddr_in);
+	struct hostent *hp;
+	char *peer;
+	char buf[BUFSIZ];
+	char *msg = "This is a test message!";
+
+	if (argc != 2) {
+		fprintf(stderr, "usage: %s hostname\n", argv[0]);
+		exit(1);
+	}
+	peer = argv[1];
+
+	if ((hp = gethostbyname(peer)) == NULL) {
+		fprintf(stderr, "Can't find host %s\n", peer);
+		exit(1);
+	}
+
+        if ((s = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0)
+                xxit("socket");
+	addr.sin_family = AF_INET;
+	addr.sin_port = htons(TCP_PORT);
+	addr.sin_addr = *(struct in_addr *)hp->h_addr;
+	fprintf(stderr, "Connecting to %s (%x)\n", peer, 
+			addr.sin_addr.s_addr);
+	if (connect(s, (struct sockaddr *)&addr, addrlen) < 0)
+		xxit("connect");
+
+	strcpy(buf, msg);
+	len = strlen(buf);
+
+	ret = write(s, buf, len);
+	fprintf(stderr, " write ret %d (len %d)\n", ret, len);
+	ret = read(s, buf, BUFSIZ);
+	fprintf(stderr, " read ret %d\n", ret);
+
+	if (ret != len || *buf != *msg + 1 || strcmp(buf+1, msg+1))
+		fprintf(stderr, "Message error: sent '%s' recv '%s'\n",
+			msg, buf);
+	else
+		fprintf(stderr, "tcp ping to %s ok\n", peer);
+}
+