LRN: Here's a patch. See if it doesn't break anything for you.

[oweals/gnunet.git] / src / tun / test_tun.c

diff --git a/src/tun/test_tun.c b/src/tun/test_tun.c
index 0177ea462e7c58d98a3598f3e51455556adefce9..3539fd177ebe640122bff6ad7316e5b54c855faf 100644 (file)
--- a/src/tun/test_tun.c
+++ b/src/tun/test_tun.c
@@ -26,8 +26,12 @@
 #include "platform.h"
 #include "gnunet_tun_lib.h"
 
+static int ret;
+
 static void
-test_udp (size_t pll)
+test_udp (size_t pll,
+         int pl_fill,
+         uint16_t crc)
 {
   struct GNUNET_TUN_IPv4Header ip;
   struct GNUNET_TUN_UdpHeader udp;
@@ -35,25 +39,36 @@ test_udp (size_t pll)
   struct in_addr src;
   struct in_addr dst;
 
-  inet_pton (AF_INET, "1.2.3.4", &src);
-  inet_pton (AF_INET, "122.2.3.5", &dst);
-  memset (payload, 42, sizeof (payload));
+  GNUNET_assert (1 == inet_pton (AF_INET, "1.2.3.4", &src));
+  GNUNET_assert (1 == inet_pton (AF_INET, "122.2.3.5", &dst));
+  memset (payload, pl_fill, sizeof (payload));
   GNUNET_TUN_initialize_ipv4_header (&ip,
                                     IPPROTO_UDP,
                                     pll + sizeof (udp),
                                     &src,
                                     &dst);
+  udp.source_port = htons (4242);
+  udp.destination_port = htons (4242);
+  udp.len = htons (pll);
   GNUNET_TUN_calculate_udp4_checksum (&ip,
                                      &udp,
                                      payload,
                                      pll);
-  fprintf (stderr, "CRC: %u\n", 
-          ntohs (udp.crc));
+  if (crc != ntohs (udp.crc))
+  {
+    fprintf (stderr, "Got CRC: %u, wanted: %u\n", 
+            ntohs (udp.crc),
+            crc);
+    ret = 1;
+  }
 }
 
 int main (int argc,
          char **argv)
 {
-  test_udp (4);
-  return 0;
+  test_udp (4, 3, 22439);
+  test_udp (4, 1, 23467);
+  test_udp (7, 17, 6516);
+  test_udp (12451, 251, 42771);
+  return ret;
 }