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This file is part of GNUnet.
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(C) 2011, 2012 Christian Grothoff (and other contributing authors)
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GNUnet is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published
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by the Free Software Foundation; either version 3, or (at your
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option) any later version.
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GNUnet is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNUnet; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA.
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* @file stream/test_stream_local.c
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* @brief Stream API testing between local peers
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* @author Sree Harsha Totakura
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#include "gnunet_util_lib.h"
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#include "gnunet_mesh_service.h"
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#include "gnunet_stream_lib.h"
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* Structure for holding peer's sockets and IO Handles
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* Peer's stream socket
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struct GNUNET_STREAM_Socket *socket;
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struct GNUNET_STREAM_IOHandle *io_handle;
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* Bytes the peer has written
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unsigned int bytes_wrote;
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* Byte the peer has read
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unsigned int bytes_read;
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static struct GNUNET_OS_Process *arm_pid;
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static struct PeerData peer1;
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static struct PeerData peer2;
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static struct GNUNET_STREAM_ListenSocket *peer2_listen_socket;
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static GNUNET_SCHEDULER_TaskIdentifier abort_task;
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static GNUNET_SCHEDULER_TaskIdentifier test_task;
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static GNUNET_SCHEDULER_TaskIdentifier read_task;
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static char *data = "ABCD";
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do_shutdown (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
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GNUNET_STREAM_close (peer1.socket);
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GNUNET_STREAM_close (peer2.socket);
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GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "test: shutdown\n");
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GNUNET_SCHEDULER_cancel (abort_task);
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GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "test: arm\n");
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if (0 != GNUNET_OS_process_kill (arm_pid, SIGTERM))
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GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "kill");
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GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "test: Wait\n");
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GNUNET_assert (GNUNET_OK == GNUNET_OS_process_wait (arm_pid));
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GNUNET_OS_process_close (arm_pid);
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* Something went wrong and timed out. Kill everything and set error flag
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do_abort (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
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GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "test: ABORT\n");
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GNUNET_SCHEDULER_cancel (test_task);
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GNUNET_SCHEDULER_cancel (read_task);
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result = GNUNET_SYSERR;
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do_shutdown (cls, tc);
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* The write completion function; called upon writing some data to stream or
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* @param cls the closure from GNUNET_STREAM_write/read
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* @param status the status of the stream at the time this function is called
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* @param size the number of bytes read or written
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write_completion (void *cls,
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enum GNUNET_STREAM_Status status,
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struct PeerData *peer;
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peer = (struct PeerData *) cls;
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GNUNET_assert (GNUNET_STREAM_OK == status);
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GNUNET_assert (size < strlen (data));
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peer->bytes_wrote += size;
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if (peer->bytes_wrote < strlen(data)) /* Have more data to send */
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peer->io_handle = GNUNET_STREAM_write (peer->socket,
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strlen(data) - peer->bytes_wrote,
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GNUNET_TIME_relative_multiply
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(GNUNET_TIME_UNIT_SECONDS, 5),
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GNUNET_assert (NULL != peer->io_handle);
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if (&peer1 == peer) /* Peer1 has finished writing; should read now */
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peer->io_handle = GNUNET_STREAM_read ((struct GNUNET_STREAM_Socket *)
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GNUNET_TIME_relative_multiply
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(GNUNET_TIME_UNIT_SECONDS, 5),
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GNUNET_assert (NULL!=peer->io_handle);
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* Function executed after stream has been established
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* @param cls the closure from GNUNET_STREAM_open
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* @param socket socket to use to communicate with the other side (read/write)
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stream_open_cb (void *cls,
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struct GNUNET_STREAM_Socket *socket)
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struct PeerData *peer;
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peer = (struct PeerData *) cls;
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peer->bytes_wrote = 0;
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GNUNET_assert (socket == peer1.socket);
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GNUNET_assert (socket == peer->socket);
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peer->io_handle = GNUNET_STREAM_write (peer->socket, /* socket */
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(void *) data, /* data */
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GNUNET_TIME_relative_multiply
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(GNUNET_TIME_UNIT_SECONDS, 5),
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GNUNET_assert (NULL != peer->io_handle);
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* @param cls the closure from GNUNET_STREAM_write/read
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* @param status the status of the stream at the time this function is called
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* @param data traffic from the other side
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* @param size the number of bytes available in data read
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* @return number of bytes of processed from 'data' (any data remaining should be
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* given to the next time the read processor is called).
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input_processor (void *cls,
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enum GNUNET_STREAM_Status status,
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const void *input_data,
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struct PeerData *peer;
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peer = (struct PeerData *) cls;
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GNUNET_assert (GNUNET_STERAM_OK == status);
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GNUNET_assert (size < strlen (data));
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GNUNET_assert (strncmp ((const char *) data + peer->bytes_read,
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(const char *) input_data,
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peer->bytes_read += size;
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if (peer->bytes_read < strlen (data))
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peer->io_handle = GNUNET_STREAM_read ((struct GNUNET_STREAM_Socket *)
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GNUNET_TIME_relative_multiply
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(GNUNET_TIME_UNIT_SECONDS, 5),
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GNUNET_assert (NULL != peer->io_handle);
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if (&peer2 == peer) /* Peer2 has completed reading; should write */
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peer->bytes_wrote = 0;
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peer->io_handle = GNUNET_STREAM_write ((struct GNUNET_STREAM_Socket *)
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GNUNET_TIME_relative_multiply
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(GNUNET_TIME_UNIT_SECONDS, 5),
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else /* Peer1 has completed reading. End of tests */
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GNUNET_SCHEDULER_add_now (&do_shutdown, NULL);
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* Scheduler call back; to be executed when a new stream is connected
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* Called from listen connect for peer2
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stream_read (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
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read_task = GNUNET_SCHEDULER_NO_TASK;
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GNUNET_assert (NULL != cls);
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peer2.bytes_read = 0;
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GNUNET_STREAM_listen_close (peer2_listen_socket); /* Close listen socket */
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peer2.io_handle = GNUNET_STREAM_read ((struct GNUNET_STREAM_Socket *) cls,
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GNUNET_TIME_relative_multiply
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(GNUNET_TIME_UNIT_SECONDS, 5),
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GNUNET_assert (NULL != peer2.io_handle);
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* Functions of this type are called upon new stream connection from other peers
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* @param cls the closure from GNUNET_STREAM_listen
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* @param socket the socket representing the stream
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* @param initiator the identity of the peer who wants to establish a stream
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* @return GNUNET_OK to keep the socket open, GNUNET_SYSERR to close the
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* stream (the socket will be invalid after the call)
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stream_listen_cb (void *cls,
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struct GNUNET_STREAM_Socket *socket,
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const struct GNUNET_PeerIdentity *initiator)
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GNUNET_assert (NULL != socket);
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GNUNET_assert (NULL == initiator); /* Local peer=NULL? */
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GNUNET_assert (socket != peer1.socket);
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peer2.socket = socket;
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read_task = GNUNET_SCHEDULER_add_now (&stream_read, (void *) socket);
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test (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
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test_task = GNUNET_SCHEDULER_NO_TASK;
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/* Connect to stream library */
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peer1.socket = GNUNET_STREAM_open (NULL, /* Null for local peer? */
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GNUNET_assert (NULL != peer1.socket);
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peer2_listen_socket = GNUNET_STREAM_listen (10 /* App port */
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GNUNET_assert (NULL != peer2_listen_socket);
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* Initialize framework and start test
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run (void *cls, char *const *args, const char *cfgfile,
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const struct GNUNET_CONFIGURATION_Handle *cfg)
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GNUNET_log_setup ("test_stream_local",
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GNUNET_OS_start_process (GNUNET_YES, NULL, NULL, "gnunet-service-arm",
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"gnunet-service-arm",
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"-c", "test_stream_local.conf", NULL);
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GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_multiply
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(GNUNET_TIME_UNIT_SECONDS, 20), &do_abort,
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test_task = GNUNET_SCHEDULER_add_now (&test, (void *) cfg);
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int main (int argc, char **argv)
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char *const argv2[] = { "test-stream-local",
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"-c", "test_stream.conf",
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struct GNUNET_GETOPT_CommandLineOption options[] = {
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GNUNET_GETOPT_OPTION_END
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GNUNET_PROGRAM_run ((sizeof (argv2) / sizeof (char *)) - 1, argv2,
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"test-stream-local", "nohelp", options, &run, NULL);
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if (GNUNET_OK != ret)
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GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "run failed with error code %d\n",
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if (GNUNET_SYSERR == result)
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GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "test failed\n");
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GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "test ok\n");