[GNUnet-SVN] r25006 - gnunet/src/transport

[gnunet]

Author: grothoff
Date: 2012-11-16 16:37:03 +0100 (Fri, 16 Nov 2012)
New Revision: 25006

Added:
   gnunet/src/transport/gnunet-transport-wlan-receiver.c
Modified:
   gnunet/src/transport/Makefile.am
Log:
-receiver hack

Modified: gnunet/src/transport/Makefile.am
===================================================================
--- gnunet/src/transport/Makefile.am    2012-11-16 15:24:36 UTC (rev 25005)
+++ gnunet/src/transport/Makefile.am    2012-11-16 15:37:03 UTC (rev 25006)
@@ -49,6 +49,7 @@
  WLAN_BIN = gnunet-helper-transport-wlan
  WLAN_BIN_DUMMY = gnunet-helper-transport-wlan-dummy
  WLAN_BIN_SENDER = gnunet-transport-wlan-sender
+ WLAN_BIN_RECEIVER = gnunet-transport-wlan-receiver
  WLAN_PLUGIN_LA = libgnunet_plugin_transport_wlan.la
  WLAN_PLUGIN_TEST = test_plugin_wlan
  WLAN_API_TEST = test_transport_api_wlan
@@ -77,7 +78,8 @@
 endif
 
 noinst_PROGRAMS = \
- $(WLAN_BIN_SENDER)
+ $(WLAN_BIN_SENDER) \
+ $(WLAN_BIN_RECEIVER)
 
 lib_LTLIBRARIES = \
   libgnunettransport.la \
@@ -139,6 +141,11 @@
 gnunet_transport_wlan_sender_LDADD = \
   $(top_builddir)/src/util/libgnunetutil.la 
 
+gnunet_transport_wlan_receiver_SOURCES = \
+ gnunet-transport-wlan-receiver.c
+gnunet_transport_wlan_receiver_LDADD = \
+  $(top_builddir)/src/util/libgnunetutil.la 
+
 gnunet_transport_SOURCES = \
  gnunet-transport.c         
 gnunet_transport_LDADD = \

Added: gnunet/src/transport/gnunet-transport-wlan-receiver.c
===================================================================
--- gnunet/src/transport/gnunet-transport-wlan-receiver.c                       
        (rev 0)
+++ gnunet/src/transport/gnunet-transport-wlan-receiver.c       2012-11-16 
15:37:03 UTC (rev 25006)
@@ -0,0 +1,113 @@
+/*
+ This file is part of GNUnet
+ (C) 2012 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
+ by the Free Software Foundation; either version 3, or (at your
+ option) any later version.
+
+ GNUnet 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 GNUnet; see the file COPYING.  If not, write to the
+ Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA.
+ */
+
+/**
+ * @file transport/gnunet-transport-wlan-receiver.c
+ * @brief program to send via WLAN as much as possible (to test 
physical/theoretical throughput)
+ * @author David Brodski
+ */
+#include "platform.h"
+#include "gnunet_protocols.h"
+#include "plugin_transport_wlan.h"
+
+int
+main (int argc, char *argv[])
+{
+  char msg_buf[65536];
+  unsigned long long count;
+  double bytes_per_s;
+  time_t start;
+  time_t akt;
+  ssize_t ret;
+  pid_t pid;
+  int commpipe[2];              /* This holds the fd for the input & output of 
the pipe */
+
+  if (2 != argc)
+  {
+    fprintf (stderr,
+             "This program must be started with the interface name as 
argument.\n");
+    fprintf (stderr,
+             "Usage: %s interface-name\n"
+             "e.g. %s mon0\n",
+            argv[0], argv[0]);
+    return 1;
+  }
+
+  /* Setup communication pipeline first */
+  if (pipe (commpipe))
+  {
+    fprintf (stderr, 
+            "Failed to create pipe: %s\n",
+            STRERROR (errno));
+    exit (1);
+  }
+
+  /* Attempt to fork and check for errors */
+  if ((pid = fork ()) == -1)
+  {
+    fprintf (stderr, "Failed to fork: %s\n", 
+            STRERROR (errno));    
+    exit (1);
+  }
+
+  if (pid)
+  {
+    /* A positive (non-negative) PID indicates the parent process */
+    if (0 != close (commpipe[1]))        /* Close unused side of pipe (in 
side) */
+      fprintf (stderr,
+              "Failed to close fd: %s\n",
+              strerror (errno));
+    start = time (NULL);
+    count = 0;
+    while (1)
+    {
+      ret = read (commpipe[1], msg_buf, sizeof (msg_buf));
+      if (0 > ret)
+       break;
+      count += ret;
+      akt = time (NULL);
+      if (akt - start > 30)
+      {
+       bytes_per_s = count / (akt - start);
+       bytes_per_s /= 1024;
+       printf ("recv %f kb/s\n", bytes_per_s); 
+       start = akt;
+       count = 0;
+      }
+    }
+  }
+  else
+  {
+    /* A zero PID indicates that this is the child process */
+    (void) close (1);
+    if (-1 == dup2 (commpipe[1], 1))    /* Replace stdin with the in side of 
the pipe */
+      fprintf (stderr, "dup2 failed: %s\n", strerror (errno));
+    (void) close (commpipe[0]); /* Close unused side of pipe (in side) */
+    /* Replace the child fork with a new process */
+    if (execl
+        ("gnunet-helper-transport-wlan", "gnunet-helper-transport-wlan",
+         argv[1], NULL) == -1)
+    {
+      fprintf (stderr, "Could not start gnunet-helper-transport-wlan!");
+      _exit (1);
+    }
+  }
+  return 0;
+}