new operation queue for limiting overlay connects
[oweals/gnunet.git] / src / transport / gnunet-transport.c
index 68f508f5b360b0b9bf104e1738eb036c4a717177..5978de6bbc30d014c1373a3ffa3432ccfc1252c0 100644 (file)
@@ -1,6 +1,6 @@
 /*
      This file is part of GNUnet.
-     (C) 2009 Christian Grothoff (and other contributing authors)
+     (C) 2011 Christian Grothoff (and other contributing authors)
 
      GNUnet is free software; you can redistribute it and/or modify
      it under the terms of the GNU General Public License as published
  */
 
 #include "platform.h"
-#include "gnunet_program_lib.h"
+#include "gnunet_util_lib.h"
+#include "gnunet_resolver_service.h"
 #include "gnunet_protocols.h"
 #include "gnunet_transport_service.h"
+#include "gnunet_nat_lib.h"
+
+/**
+ * How long do we wait for the NAT test to report success?
+ * Should match NAT_SERVER_TIMEOUT in 'nat_test.c'.
+ */
+#define TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 30)
+#define RESOLUTION_TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 10)
 
 /**
  * Which peer should we connect to?
@@ -63,11 +72,31 @@ static int benchmark_receive;
  */
 static int iterate_connections;
 
+/**
+ * Option -t.
+ */
+static int test_configuration;
+
+/**
+ * Option -m.
+ */
+static int monitor_connections;
+
+/**
+ * Option -n.
+ */
+static int numeric;
+
 /**
  * Global return value (0 success).
  */
 static int ret;
 
+/**
+ * Current number of connections in monitor mode
+ */
+static int monitor_connections_counter;
+
 /**
  * Number of bytes of traffic we received so far.
  */
@@ -99,19 +128,191 @@ static struct GNUNET_PeerIdentity pid;
  */
 static GNUNET_SCHEDULER_TaskIdentifier end;
 
+static struct GNUNET_CONTAINER_MultiHashMap *peers;
+
 /**
  * Selected level of verbosity.
  */
 static int verbosity;
 
+/**
+ * Resolver process handle.
+ */
+struct GNUNET_OS_Process *resolver;
+
+/**
+ * Number of tasks running that still need the resolver.
+ */
+static unsigned int resolver_users;
+
+
+/**
+ * Context for a plugin test.
+ */
+struct TestContext
+{
+
+  /**
+   * Handle to the active NAT test.
+   */
+  struct GNUNET_NAT_Test *tst;
+
+  /**
+   * Task identifier for the timeout.
+   */
+  GNUNET_SCHEDULER_TaskIdentifier tsk;
+
+  /**
+   * Name of plugin under test.
+   */
+  const char *name;
+
+};
+
+
+/**
+ * Display the result of the test.
+ *
+ * @param tc test context
+ * @param result GNUNET_YES on success
+ */
+static void
+display_test_result (struct TestContext *tc, int result)
+{
+  if (GNUNET_YES != result)
+  {
+    FPRINTF (stderr, "Configuration for plugin `%s' did not work!\n", tc->name);
+  }
+  else
+  {
+    FPRINTF (stderr, "Configuration for plugin `%s' is working!\n", tc->name);
+  }
+  if (GNUNET_SCHEDULER_NO_TASK != tc->tsk)
+  {
+    GNUNET_SCHEDULER_cancel (tc->tsk);
+    tc->tsk = GNUNET_SCHEDULER_NO_TASK;
+  }
+  if (NULL != tc->tst)
+  {
+    GNUNET_NAT_test_stop (tc->tst);
+    tc->tst = NULL;
+  }
+  GNUNET_free (tc);
+  resolver_users--;
+  if ((0 == resolver_users) && (NULL != resolver))
+  {
+    GNUNET_break (0 == GNUNET_OS_process_kill (resolver, SIGTERM));
+    GNUNET_OS_process_destroy (resolver);
+    resolver = NULL;
+  }
+}
+
+
+/**
+ * Function called by NAT on success.
+ * Clean up and update GUI (with success).
+ *
+ * @param cls test context
+ * @param success currently always GNUNET_OK
+ */
+static void
+result_callback (void *cls, int success)
+{
+  struct TestContext *tc = cls;
+
+  display_test_result (tc, success);
+}
+
+
+/**
+ * Function called if NAT failed to confirm success.
+ * Clean up and update GUI (with failure).
+ *
+ * @param cls test context
+ * @param tc scheduler callback
+ */
+static void
+fail_timeout (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+  struct TestContext *tstc = cls;
+
+  tstc->tsk = GNUNET_SCHEDULER_NO_TASK;
+  display_test_result (tstc, GNUNET_NO);
+}
+
+
+/**
+ * Test our plugin's configuration (NAT traversal, etc.).
+ *
+ * @param cfg configuration to test
+ */
+static void
+do_test_configuration (const struct GNUNET_CONFIGURATION_Handle *cfg)
+{
+  char *plugins;
+  char *tok;
+  unsigned long long bnd_port;
+  unsigned long long adv_port;
+  struct TestContext *tc;
+
+  if (GNUNET_OK !=
+      GNUNET_CONFIGURATION_get_value_string (cfg, "transport", "plugins",
+                                             &plugins))
+  {
+    FPRINTF (stderr,
+             "%s",
+            _
+             ("No transport plugins configured, peer will never communicate\n"));
+    ret = 4;
+    return;
+  }
+  for (tok = strtok (plugins, " "); tok != NULL; tok = strtok (NULL, " "))
+  {
+    char section[12 + strlen (tok)];
+
+    GNUNET_snprintf (section, sizeof (section), "transport-%s", tok);
+    if (GNUNET_OK !=
+        GNUNET_CONFIGURATION_get_value_number (cfg, section, "PORT", &bnd_port))
+    {
+      FPRINTF (stderr,
+               _("No port configured for plugin `%s', cannot test it\n"), tok);
+      continue;
+    }
+    if (GNUNET_OK !=
+        GNUNET_CONFIGURATION_get_value_number (cfg, section, "ADVERTISED_PORT",
+                                               &adv_port))
+      adv_port = bnd_port;
+    if (NULL == resolver)
+      resolver =
+         GNUNET_OS_start_process (GNUNET_YES, GNUNET_OS_INHERIT_STD_OUT_AND_ERR, NULL, NULL, "gnunet-service-resolver",
+                                   "gnunet-service-resolver", NULL);
+    resolver_users++;
+    GNUNET_RESOLVER_connect (cfg);
+    tc = GNUNET_malloc (sizeof (struct TestContext));
+    tc->name = GNUNET_strdup (tok);
+    tc->tst =
+        GNUNET_NAT_test_start (cfg,
+                               (0 ==
+                                strcasecmp (tok,
+                                            "udp")) ? GNUNET_NO : GNUNET_YES,
+                               (uint16_t) bnd_port, (uint16_t) adv_port,
+                               &result_callback, tc);
+    if (NULL == tc->tst)
+    {
+      display_test_result (tc, GNUNET_SYSERR);
+      continue;
+    }
+    tc->tsk = GNUNET_SCHEDULER_add_delayed (TIMEOUT, &fail_timeout, tc);
+  }
+  GNUNET_free (plugins);
+}
 
 
 /**
  * Shutdown, print statistics.
  */
 static void
-do_disconnect (void *cls,
-              const struct GNUNET_SCHEDULER_TaskContext *tc)
+do_disconnect (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
 {
   struct GNUNET_TIME_Relative duration;
 
@@ -124,20 +325,17 @@ do_disconnect (void *cls,
   if (benchmark_receive)
   {
     duration = GNUNET_TIME_absolute_get_duration (start_time);
-    fprintf (stdout,
-            _("Received %llu bytes/s (%llu bytes in %llu ms)\n"),
-            1000 * traffic_received / (1+duration.rel_value),
-            traffic_received,
-            (unsigned long long) duration.rel_value);
+    FPRINTF (stdout, _("Received %llu bytes/s (%llu bytes in %s)\n"),
+             1000 * traffic_received / (1 + duration.rel_value),
+             traffic_received,
+            GNUNET_STRINGS_relative_time_to_string (duration, GNUNET_YES));
   }
   if (benchmark_send)
   {
     duration = GNUNET_TIME_absolute_get_duration (start_time);
-    fprintf (stdout,
-            _("Transmitted %llu bytes/s (%llu bytes in %llu ms)\n"),
-            1000 * traffic_sent / (1+duration.rel_value),
-            traffic_sent,
-            (unsigned long long) duration.rel_value);
+    FPRINTF (stdout, _("Transmitted %llu bytes/s (%llu bytes in %s)\n"),
+             1000 * traffic_sent / (1 + duration.rel_value), traffic_sent,
+             GNUNET_STRINGS_relative_time_to_string (duration, GNUNET_YES));
   }
 }
 
@@ -154,28 +352,28 @@ do_disconnect (void *cls,
  * @return number of bytes written to buf
  */
 static size_t
-transmit_data (void *cls, size_t size,
-              void *buf)
+transmit_data (void *cls, size_t size, void *buf)
 {
   struct GNUNET_MessageHeader *m = buf;
 
+  if ((NULL == buf) && (0 == size))
+  {
+    th = NULL;
+    return 0;
+  }
+
   GNUNET_assert (size >= sizeof (struct GNUNET_MessageHeader));
   GNUNET_assert (size < GNUNET_SERVER_MAX_MESSAGE_SIZE);
   m->size = ntohs (size);
   m->type = ntohs (GNUNET_MESSAGE_TYPE_DUMMY);
   memset (&m[1], 52, size - sizeof (struct GNUNET_MessageHeader));
   traffic_sent += size;
-  th = GNUNET_TRANSPORT_notify_transmit_ready (handle,
-                                              &pid,
-                                              32 * 1024,
-                                              0,
-                                              GNUNET_TIME_UNIT_FOREVER_REL,
-                                              &transmit_data, NULL);
+  th = GNUNET_TRANSPORT_notify_transmit_ready (handle, &pid, 32 * 1024, 0,
+                                               GNUNET_TIME_UNIT_FOREVER_REL,
+                                               &transmit_data, NULL);
   if (verbosity > 0)
-    fprintf (stdout,
-            _("Transmitting %u bytes to %s\n"),
-            (unsigned int) size,
-            GNUNET_i2s (&pid));
+    FPRINTF (stdout, _("Transmitting %u bytes to %s\n"), (unsigned int) size,
+             GNUNET_i2s (&pid));
   return size;
 }
 
@@ -190,39 +388,28 @@ transmit_data (void *cls, size_t size,
  * @param ats_count number of entries in ats (excluding 0-termination)
  */
 static void
-notify_connect (void *cls,
-               const struct GNUNET_PeerIdentity
-               * peer,
-               const struct
-               GNUNET_ATS_Information
-               * ats, uint32_t ats_count)
+notify_connect (void *cls, const struct GNUNET_PeerIdentity *peer,
+                const struct GNUNET_ATS_Information *ats, uint32_t ats_count)
 {
   if (verbosity > 0)
-    fprintf (stdout,
-            _("Connected to %s\n"),
-            GNUNET_i2s (peer));
-  if (0 != memcmp (&pid,
-                  peer,
-                  sizeof (struct GNUNET_PeerIdentity)))
+    FPRINTF (stdout, _("Connected to %s\n"), GNUNET_i2s (peer));
+  if (0 != memcmp (&pid, peer, sizeof (struct GNUNET_PeerIdentity)))
     return;
   ret = 0;
-  if (benchmark_send) 
+  if (benchmark_send)
   {
     start_time = GNUNET_TIME_absolute_get ();
-    th = GNUNET_TRANSPORT_notify_transmit_ready (handle,
-                                                peer,
-                                                32 * 1024,
-                                                0,
-                                                GNUNET_TIME_UNIT_FOREVER_REL,
-                                                &transmit_data, NULL);
+    if (NULL == th)
+      th = GNUNET_TRANSPORT_notify_transmit_ready (handle, peer, 32 * 1024, 0,
+                                                 GNUNET_TIME_UNIT_FOREVER_REL,
+                                                 &transmit_data, NULL);
   }
   else
   {
     /* all done, terminate instantly */
     GNUNET_SCHEDULER_cancel (end);
-    end = GNUNET_SCHEDULER_add_now (&do_disconnect,
-                                   NULL);    
-  }  
+    end = GNUNET_SCHEDULER_add_now (&do_disconnect, NULL);
+  }
 }
 
 
@@ -234,28 +421,68 @@ notify_connect (void *cls,
  * @param peer the peer that disconnected
  */
 static void
-notify_disconnect (void *cls,
-                  const struct
-                  GNUNET_PeerIdentity * peer)
+notify_disconnect (void *cls, const struct GNUNET_PeerIdentity *peer)
 {
   if (verbosity > 0)
-    fprintf (stdout,
-            _("Disconnected from %s\n"),
-            GNUNET_i2s (peer));
-  if ( (0 == memcmp (&pid,
-                    peer,
-                    sizeof (struct GNUNET_PeerIdentity))) &&
-       (NULL != th) )
+    FPRINTF (stdout, _("Disconnected from %s\n"), GNUNET_i2s (peer));
+  if (NULL != th)
   {
     GNUNET_TRANSPORT_notify_transmit_ready_cancel (th);
     th = NULL;
-    GNUNET_SCHEDULER_cancel (end);
-    end = GNUNET_SCHEDULER_add_now (&do_disconnect,
-                                   NULL);    
   }
+
+}
+
+/**
+ * Function called to notify transport users that another
+ * peer connected to us.
+ *
+ * @param cls closure
+ * @param peer the peer that connected
+ * @param ats performance data
+ * @param ats_count number of entries in ats (excluding 0-termination)
+ */
+static void
+monitor_notify_connect (void *cls, const struct GNUNET_PeerIdentity *peer,
+                const struct GNUNET_ATS_Information *ats, uint32_t ats_count)
+{
+  monitor_connections_counter ++;
+  struct GNUNET_TIME_Absolute now = GNUNET_TIME_absolute_get();
+  const char *now_str = GNUNET_STRINGS_absolute_time_to_string (now);
+
+  FPRINTF (stdout, _("%24s: %-17s %4s   (%u connections in total)\n"),
+           now_str,
+           _("Connected to"),
+           GNUNET_i2s (peer),
+           monitor_connections_counter);
 }
 
 
+/**
+ * Function called to notify transport users that another
+ * peer disconnected from us.
+ *
+ * @param cls closure
+ * @param peer the peer that disconnected
+ */
+static void
+monitor_notify_disconnect (void *cls, const struct GNUNET_PeerIdentity *peer)
+{
+  struct GNUNET_TIME_Absolute now = GNUNET_TIME_absolute_get();
+  const char *now_str = GNUNET_STRINGS_absolute_time_to_string (now);
+
+  GNUNET_assert (monitor_connections_counter > 0);
+  monitor_connections_counter --;
+
+  FPRINTF (stdout, _("%24s: %-17s %4s   (%u connections in total)\n"),
+           now_str,
+           _("Disconnected from"),
+           GNUNET_i2s (peer),
+           monitor_connections_counter);
+}
+
+
+
 /**
  * Function called by the transport for each received message.
  *
@@ -263,115 +490,226 @@ notify_disconnect (void *cls,
  * @param peer (claimed) identity of the other peer
  * @param message the message
  * @param ats performance data
- * @param ats_count number of entries in ats 
+ * @param ats_count number of entries in ats
  */
 static void
-notify_receive (void *cls,
-               const struct
-               GNUNET_PeerIdentity * peer,
-               const struct
-               GNUNET_MessageHeader *
-               message,
-               const struct
-               GNUNET_ATS_Information
-               * ats, uint32_t ats_count)
+notify_receive (void *cls, const struct GNUNET_PeerIdentity *peer,
+                const struct GNUNET_MessageHeader *message,
+                const struct GNUNET_ATS_Information *ats, uint32_t ats_count)
 {
-  if (! benchmark_receive)
+  if (!benchmark_receive)
+    return;
+  if (GNUNET_MESSAGE_TYPE_DUMMY != ntohs (message->type))
     return;
   if (verbosity > 0)
-    fprintf (stdout,
-            _("Received %u bytes from %s\n"),
-            (unsigned int) ntohs (message->size),
-            GNUNET_i2s (peer));
+    FPRINTF (stdout, _("Received %u bytes from %s\n"),
+             (unsigned int) ntohs (message->size), GNUNET_i2s (peer));
   if (traffic_received == 0)
     start_time = GNUNET_TIME_absolute_get ();
   traffic_received += ntohs (message->size);
 }
 
+struct ResolutionContext
+{
+  struct GNUNET_HELLO_Address *addrcp;
+
+  int printed;
+};
+
+
+static void
+process_string (void *cls, const char *address)
+{
+  struct ResolutionContext *rc = cls;
+  struct GNUNET_HELLO_Address *addrcp = rc->addrcp;
+
+  if (address != NULL)
+  {
+    FPRINTF (stdout, _("Peer `%s': %s %s\n"), GNUNET_i2s (&addrcp->peer), addrcp->transport_name, address);
+    rc->printed = GNUNET_YES;
+  }
+  else
+  {
+    /* done */
+    if (GNUNET_NO == rc->printed)
+      FPRINTF (stdout, _("Peer `%s': %s <unable to resolve address>\n"), GNUNET_i2s (&addrcp->peer), addrcp->transport_name);
+    GNUNET_free (rc->addrcp);
+    GNUNET_free (rc);
+  }
+}
 
 /**
- * Function to call with a human-readable format of an address
+ * Function to call with a binary address
  *
  * @param cls closure
- * @param address NULL on error, otherwise 0-terminated printable UTF-8 string
+ * @param peer identity of the peer
+ * @param address binary address (NULL on disconnect)
  */
 static void
 process_address (void *cls, const struct GNUNET_PeerIdentity *peer,
-                 const char *transport, const void *addr, size_t addrlen)
+                 const struct GNUNET_HELLO_Address *address)
 {
-  if ((peer != NULL) || (transport != NULL) ||
-      ((addr != NULL) && (addrlen > 0)))
-    fprintf (stdout, 
-            _("Peer `%s' plugin: `%s' address `%s'\n"),
-             (peer != NULL) ? GNUNET_i2s (peer) : "<unknown>",
-             (transport != NULL) ? transport : "<unknown>", 
-            ((addr != NULL) && (addrlen > 0) && (transport != NULL)) ?
-             "how do i resolve the name without transport service?" :
-             "<unknown>");
+  const struct GNUNET_CONFIGURATION_Handle *cfg = cls;
+  struct ResolutionContext *rc;
+
+  if (peer == NULL)
+  {
+    /* done */
+    return;
+  }
+
+  if (address == NULL)
+  {
+    FPRINTF (stdout, _("Peer `%s' disconnected\n"), GNUNET_i2s (peer));
+    return;
+  }
+
+  rc = GNUNET_malloc(sizeof (struct ResolutionContext));
+  rc->addrcp = GNUNET_HELLO_address_copy(address);
+  rc->printed = GNUNET_NO;
+
+  GNUNET_assert (NULL != rc);
+
+  /* Resolve address to string */
+  GNUNET_TRANSPORT_address_to_string (cfg, address, numeric,
+                                      RESOLUTION_TIMEOUT, &process_string,
+                                      rc);
 }
 
 
 /**
- * Main function that will be run by the scheduler.
- *
- * @param cls closure
- * @param args remaining command-line arguments
- * @param cfgfile name of the configuration file used (for saving, can be NULL!)
- * @param cfg configuration
+ * Task run in monitor mode when the user presses CTRL-C to abort.
+ * Stops monitoring activity.
+ * 
+ * @param cls the 'struct GNUNET_TRANSPORT_PeerIterateContext *'
+ * @param tc scheduler context
  */
 static void
-run (void *cls, char *const *args, const char *cfgfile,
-     const struct GNUNET_CONFIGURATION_Handle *cfg)
+shutdown_task (void *cls,
+              const struct GNUNET_SCHEDULER_TaskContext *tc)
 {
+  if (NULL != th)
+  {
+    GNUNET_TRANSPORT_notify_transmit_ready_cancel(th);
+    th = NULL;
+  }
+  if (NULL != handle)
+  {
+    GNUNET_TRANSPORT_disconnect(handle);
+    handle = NULL;
+  }
+
+  if (NULL != peers)
+  {
+    GNUNET_CONTAINER_multihashmap_destroy (peers);
+    peers = NULL;
+  }
+}
+
+static void
+testservice_task (void *cls,
+                  const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+  struct GNUNET_CONFIGURATION_Handle *cfg = cls;
+
+  if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_TIMEOUT))
+  {
+      FPRINTF (stderr, _("Service `%s' is not running\n"), "transport");
+      return;
+  }
+
   if (benchmark_send && (NULL == cpid))
   {
-    fprintf (stderr, _("Option `%s' makes no sense without option `%s'.\n"),
-            "-s", "-C");
+    FPRINTF (stderr, _("Option `%s' makes no sense without option `%s'.\n"),
+             "-s", "-C");
     return;
   }
   if (NULL != cpid)
   {
     ret = 1;
-    if (GNUNET_OK !=
-       GNUNET_CRYPTO_hash_from_string (cpid, &pid.hashPubKey))
+    if (GNUNET_OK != GNUNET_CRYPTO_hash_from_string (cpid, &pid.hashPubKey))
     {
-      fprintf (stderr,
-              _("Failed to parse peer identity `%s'\n"),
-              cpid);
+      FPRINTF (stderr, _("Failed to parse peer identity `%s'\n"), cpid);
       return;
     }
-    handle = GNUNET_TRANSPORT_connect (cfg, NULL, NULL,
-                                      &notify_receive, 
-                                      &notify_connect,
-                                      &notify_disconnect);
+    handle =
+        GNUNET_TRANSPORT_connect (cfg, NULL, NULL, &notify_receive,
+                                  &notify_connect, &notify_disconnect);
     GNUNET_TRANSPORT_try_connect (handle, &pid);
-    end = GNUNET_SCHEDULER_add_delayed (benchmark_send
-                                       ? GNUNET_TIME_UNIT_FOREVER_REL
-                                       : GNUNET_TIME_UNIT_SECONDS,
-                                       &do_disconnect,
-                                       NULL);    
-  } else if (benchmark_receive)
+    end =
+        GNUNET_SCHEDULER_add_delayed (benchmark_send ?
+                                      GNUNET_TIME_UNIT_FOREVER_REL :
+                                      GNUNET_TIME_UNIT_SECONDS, &do_disconnect,
+                                      NULL);
+  }
+  else if (benchmark_receive)
   {
-    handle = GNUNET_TRANSPORT_connect (cfg, NULL, NULL,
-                                      &notify_receive, 
-                                      &notify_connect,
-                                      &notify_disconnect);
+    handle =
+        GNUNET_TRANSPORT_connect (cfg, NULL, NULL, &notify_receive,
+                                  &notify_connect, &notify_disconnect);
     GNUNET_TRANSPORT_try_connect (handle, &pid);
-    end = GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
-                                       &do_disconnect,
-                                       NULL); 
+    start_time = GNUNET_TIME_absolute_get ();
+    end =
+        GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
+                                      &do_disconnect, NULL);
   }
   if (iterate_connections)
   {
-    GNUNET_TRANSPORT_address_iterate (cfg, GNUNET_TIME_UNIT_MINUTES,
-                                     &process_address, NULL);
+    peers = GNUNET_CONTAINER_multihashmap_create (20, GNUNET_NO);
+    GNUNET_TRANSPORT_peer_get_active_addresses (cfg, NULL, GNUNET_YES,
+                                                TIMEOUT,
+                                                &process_address, (void *) cfg);
+  }
+  if (monitor_connections)
+  {
+    monitor_connections_counter = 0;
+    handle = GNUNET_TRANSPORT_connect (cfg, NULL, NULL, NULL,
+                                       &monitor_notify_connect,
+                                       &monitor_notify_disconnect);
+    if (NULL == handle)
+    {
+      GNUNET_SCHEDULER_add_now (&shutdown_task, NULL);
+    }
+    else
+    {
+      GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
+                                    &shutdown_task,
+                                    NULL);
+    }
   }
+
+
+}
+
+
+/**
+ * Main function that will be run by the scheduler.
+ *
+ * @param cls closure
+ * @param args remaining command-line arguments
+ * @param cfgfile name of the configuration file used (for saving, can be NULL!)
+ * @param cfg configuration
+ */
+static void
+run (void *cls, char *const *args, const char *cfgfile,
+     const struct GNUNET_CONFIGURATION_Handle *cfg)
+{
+  if (test_configuration)
+  {
+    do_test_configuration (cfg);
+  }
+
+  GNUNET_CLIENT_service_test ("transport", cfg,
+      GNUNET_TIME_UNIT_SECONDS,
+      &testservice_task,
+      (void *) cfg);
 }
 
 
 int
 main (int argc, char *const *argv)
 {
+  int res;
   static const struct GNUNET_GETOPT_CommandLineOption options[] = {
     {'b', "benchmark", NULL,
      gettext_noop ("measure how fast we are receiving data (until CTRL-C)"),
@@ -381,17 +719,39 @@ main (int argc, char *const *argv)
      1, &GNUNET_GETOPT_set_string, &cpid},
     {'i', "information", NULL,
      gettext_noop ("provide information about all current connections (once)"),
-     0, &GNUNET_GETOPT_set_one, &iterate_connections},  
+     0, &GNUNET_GETOPT_set_one, &iterate_connections},
+    {'m', "monitor", NULL,
+     gettext_noop ("provide information about all current connections (continuously)"),
+     0, &GNUNET_GETOPT_set_one, &monitor_connections},
+    {'n', "numeric", NULL,
+     gettext_noop ("do not resolve hostnames"),
+     0, &GNUNET_GETOPT_set_one, &numeric},
     {'s', "send", NULL,
-     gettext_noop ("send data for benchmarking to the other peer (until CTRL-C)"),
-     0, &GNUNET_GETOPT_set_one, &benchmark_send},  
-    GNUNET_GETOPT_OPTION_VERBOSE(&verbosity),
+     gettext_noop
+     ("send data for benchmarking to the other peer (until CTRL-C)"),
+     0, &GNUNET_GETOPT_set_one, &benchmark_send},
+    {'t', "test", NULL,
+     gettext_noop ("test transport configuration (involves external server)"),
+     0, &GNUNET_GETOPT_set_one, &test_configuration},
+    GNUNET_GETOPT_OPTION_VERBOSE (&verbosity),
     GNUNET_GETOPT_OPTION_END
   };
-  return (GNUNET_OK ==
-          GNUNET_PROGRAM_run (argc, argv, "gnunet-transport",
-                              gettext_noop ("Direct access to transport service."),
-                              options, &run, NULL)) ? ret : 1;
+
+  if (GNUNET_OK != GNUNET_STRINGS_get_utf8_args (argc, argv, &argc, &argv))
+    return 2;
+
+  res = GNUNET_PROGRAM_run (argc, argv, "gnunet-transport",
+                              gettext_noop
+                              ("Direct access to transport service."), options,
+                              &run, NULL);
+  GNUNET_free ((void *) argv);
+
+  if (GNUNET_OK == res)
+    return ret;
+  else
+    return 1;
+
+
 }