1 files changed, 130 insertions, 0 deletions
diff --git a/contrib/testclient.c b/contrib/testclient.c
new file mode 100644
index 0000000..a8dbf2e
--- /dev/null
+++ b/contrib/testclient.c
@@ -0,0 +1,130 @@
+/*
+ *  tcpproxy
+ *
+ *  tcpproxy is a simple tcp connection proxy which combines the
+ *  features of rinetd and 6tunnel. tcpproxy supports IPv4 and
+ *  IPv6 and also supports connections from IPv6 to IPv4
+ *  endpoints and vice versa.
+ *
+ *
+ *  Copyright (C) 2010-2015 Christian Pointner <equinox@spreadspace.org>
+ *
+ *  This file is part of tcpproxy.
+ *
+ *  tcpproxy is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  any later version.
+ *
+ *  tcpproxy is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with tcpproxy. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <errno.h>
+#include <string.h>
+#include <unistd.h>
+
+int main(int argc, char* argv[])
+{
+  if(argc < 3) {
+    fprintf(stderr, "Usage: %s <addr> <port>\n", argv[0]);
+    return -1;
+  }
+
+  int c = socket(AF_INET, SOCK_STREAM, 0);
+  if(!c) {
+    perror("socket()");
+    return -1;
+  }
+
+  struct sockaddr_in addr;
+  addr.sin_family = AF_INET;
+  addr.sin_port = htons(atoi(argv[2]));
+  int ret = inet_pton(AF_INET, argv[1], &(addr.sin_addr));
+  if (ret <= 0) {
+    if (ret == 0)
+      fprintf(stderr, "inet_pton(): Not in presentation format\n");
+    else
+      perror("inet_pton()");
+    return -1;
+  }
+
+  ret = connect(c, (struct sockaddr*)(&addr), sizeof(struct sockaddr_in));
+  if(ret) {
+    perror("connect()");
+    return -1;
+  }
+
+  char buf[123456];
+  unsigned int i;
+  for(i = 0; i<sizeof(buf); ++i) {
+    buf[i] = 'A' + i%62;
+  }
+  buf[sizeof(buf)-1] = '\n';
+
+  int nbwritten = send(c, buf, sizeof(buf), 0);
+  if(nbwritten <= 0) {
+    if(nbwritten < 0)
+      perror("send()");
+    else
+      fprintf(stderr, "nothing sent... aborting\n");
+    return -1;
+  }
+  printf("%d bytes sent\n", nbwritten);
+  if(nbwritten != sizeof(buf)) {
+    fprintf(stderr, "to few bytes sent ... aborting!");
+    return -1;
+  }
+
+  shutdown(c, SHUT_WR);
+
+  int len = 0;
+  for(;;) {
+    int nbread = recv(c, &(buf[len]), sizeof(buf) - len, 0);
+    if(nbread <= 0) {
+      if(!nbread) {
+        fprintf(stderr, "connection closed\n");
+      } else if (errno != EAGAIN && errno != EWOULDBLOCK && errno != EINTR) {
+        perror("recv()");
+      } else
+        continue;
+
+      return -1;
+    }
+
+    printf("%d bytes received", nbread);
+    len += nbread;
+    if(len == nbwritten) {
+      printf(" .. finished\n");
+      for(i = 0; i<nbwritten-1; ++i) {
+        if(buf[i] != ('A' + i%62)) {
+          fprintf(stderr, "error at index %d (expected 0x%02X, got 0x%02X)\n", i, 'A' + i%62, (unsigned int)(buf[i]));
+          return -1;
+        }
+      }
+      if(buf[nbwritten-1] != '\n') {
+        fprintf(stderr, "string doesn't end with new-line\n");
+        return -1;
+      }
+      break;
+    }
+
+    printf("\n");
+  }
+
+  while(recv(c, buf, 1, 0) > 0);
+
+  return 0;
+}