1 files changed, 125 insertions, 0 deletions
diff --git a/contrib/testserver.c b/contrib/testserver.c
new file mode 100644
index 0000000..b9e3f0a
--- /dev/null
+++ b/contrib/testserver.c
@@ -0,0 +1,125 @@
+/*
+ *  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 < 2) {
+    fprintf(stderr, "Usage: %s <port>\n", argv[0]);
+    return -1;
+  }
+
+  int s = socket(AF_INET, SOCK_STREAM, 0);
+  if(!s) {
+    perror("socket()");
+    return -1;
+  }
+
+  int on = 1;
+  int ret = setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
+  if(ret) {
+    perror("setsockopt(SO_REUSEADDR)");
+    return -1;
+  }
+
+  struct sockaddr_in laddr;
+  laddr.sin_family = AF_INET;
+  laddr.sin_port = htons(atoi(argv[1]));
+  laddr.sin_addr.s_addr = htonl(INADDR_ANY);
+  ret = bind(s, (struct sockaddr*)(&laddr), sizeof(struct sockaddr_in));
+  if(ret) {
+    perror("bind()");
+    return -1;
+  }
+
+  ret = listen(s, 1);
+  if(ret) {
+    perror("listen()");
+    return -1;
+  }
+
+  struct sockaddr_in caddr;
+  socklen_t len = sizeof(struct sockaddr_in);
+  int c = accept(s, (struct sockaddr*)(&caddr), &len);
+  if(c < 0) {
+    perror("accept()");
+    return -1;
+  }
+  char addr_str[64];
+  if(!inet_ntop(AF_INET, (&caddr.sin_addr), addr_str, sizeof(addr_str))) {
+    perror("inet_ntop");
+    return -1;
+  }
+  printf("connection from %s:%d\n", addr_str, caddr.sin_port);
+
+
+  char buf[10 * 1024];
+  for(;;) {
+    int nbread = recv(c, buf, sizeof(buf), 0);
+    if(nbread <= 0) {
+      if(!nbread) {
+        fprintf(stderr, "connection closed\n");
+        return 0;
+      } else if (errno != EAGAIN && errno != EWOULDBLOCK && errno != EINTR) {
+        perror("recv()");
+        return -1;
+      }
+      continue;
+    }
+
+    printf("%d bytes received\n", nbread);
+
+    int len = 0;
+    for(;;) {
+      int nbwritten = send(c, &(buf[len]), nbread - len, 0);
+      if(nbwritten <= 0) {
+        if(nbwritten < 0 && (errno != EAGAIN && errno != EWOULDBLOCK && errno != EINTR)) {
+          perror("send()");
+          return -1;
+        }
+        continue;
+      }
+      printf("%d bytes sent\n", nbwritten);
+      len += nbwritten;
+      if(len >= nbread) {
+        break;
+      }
+    }
+  }
+
+  return 0;
+}