diff options
Diffstat (limited to 'src/stream/test_stream_sequence_wraparound.c')
| -rw-r--r-- | src/stream/test_stream_sequence_wraparound.c | 425 |
1 files changed, 425 insertions, 0 deletions
diff --git a/src/stream/test_stream_sequence_wraparound.c b/src/stream/test_stream_sequence_wraparound.c new file mode 100644 index 0000000..bbe9f1a --- /dev/null +++ b/src/stream/test_stream_sequence_wraparound.c @@ -0,0 +1,425 @@ +/* + This file is part of GNUnet. + (C) 2011, 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 stream/test_stream_sequence_wraparound.c + * @brief test cases for sequence wrap around situations during data transfer + * @author Sree Harsha Totakura + */ + +#include <string.h> + +#include "platform.h" +#include "gnunet_util_lib.h" +#include "gnunet_stream_lib.h" +#include "gnunet_testing_lib.h" + +/** + * Generic logging shorthand + */ +#define LOG(kind, ...) \ + GNUNET_log (kind, __VA_ARGS__); + +/** + * Relative seconds shorthand + */ +#define TIME_REL_SECS(sec) \ + GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, sec) + +/** + * Structure for holding peer's sockets and IO Handles + */ +struct PeerData +{ + /** + * Peer's stream socket + */ + struct GNUNET_STREAM_Socket *socket; + + /** + * Peer's io write handle + */ + struct GNUNET_STREAM_WriteHandle *io_write_handle; + + /** + * Peer's io read handle + */ + struct GNUNET_STREAM_ReadHandle *io_read_handle; + + /** + * Peer's shutdown handle + */ + struct GNUNET_STREAM_ShutdownHandle *shutdown_handle; + + /** + * Bytes the peer has written + */ + unsigned int bytes_wrote; + + /** + * Byte the peer has read + */ + unsigned int bytes_read; +}; + +static struct PeerData peer1; +static struct PeerData peer2; +static struct GNUNET_STREAM_ListenSocket *peer2_listen_socket; +static const struct GNUNET_CONFIGURATION_Handle *config; +static struct GNUNET_TESTING_Peer *self; +static struct GNUNET_PeerIdentity self_id; + +static GNUNET_SCHEDULER_TaskIdentifier abort_task; +static GNUNET_SCHEDULER_TaskIdentifier read_task; +static GNUNET_SCHEDULER_TaskIdentifier write_task; + +#define DATA_SIZE 65536 /* 64KB */ +static uint32_t data[DATA_SIZE / 4]; /* 64KB array */ +static int result; + +/** + * Shutdown nicely + */ +static void +do_close (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc) +{ + if (GNUNET_SCHEDULER_NO_TASK != abort_task) + GNUNET_SCHEDULER_cancel (abort_task); + if (NULL != peer1.socket) + GNUNET_STREAM_close (peer1.socket); + if (NULL != peer2.socket) + GNUNET_STREAM_close (peer2.socket); + if (NULL != peer2_listen_socket) + GNUNET_STREAM_listen_close (peer2_listen_socket); /* Close listen socket */ +} + + +/** + * Something went wrong and timed out. Kill everything and set error flag + */ +static void +do_abort (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc) +{ + GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "test: ABORT\n"); + if (GNUNET_SCHEDULER_NO_TASK != read_task) + { + GNUNET_SCHEDULER_cancel (read_task); + } + result = GNUNET_SYSERR; + abort_task = GNUNET_SCHEDULER_NO_TASK; + do_close (cls, tc); +} + + +/** + * Completion callback for shutdown + * + * @param cls the closure from GNUNET_STREAM_shutdown call + * @param operation the operation that was shutdown (SHUT_RD, SHUT_WR, + * SHUT_RDWR) + */ +static void +shutdown_completion (void *cls, + int operation) +{ + static int shutdowns; + + if (++shutdowns == 1) + { + peer1.shutdown_handle = NULL; + peer2.shutdown_handle = GNUNET_STREAM_shutdown (peer2.socket, SHUT_RDWR, + &shutdown_completion, cls); + return; + } + GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "STREAM shutdown successful\n"); + GNUNET_SCHEDULER_add_now (&do_close, cls); +} + + +/** + * Shutdown sockets gracefully + */ +static void +do_shutdown (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc) +{ + result = GNUNET_OK; + peer1.shutdown_handle = GNUNET_STREAM_shutdown (peer1.socket, SHUT_RDWR, + &shutdown_completion, cls); +} + + +/** + * The write completion function; called upon writing some data to stream or + * upon error + * + * @param cls the closure from GNUNET_STREAM_write/read + * @param status the status of the stream at the time this function is called + * @param size the number of bytes read or written + */ +static void +write_completion (void *cls, + enum GNUNET_STREAM_Status status, + size_t size) +{ + struct PeerData *peer; + + peer = (struct PeerData *) cls; + GNUNET_assert (GNUNET_STREAM_OK == status); + GNUNET_assert (size <= DATA_SIZE); + peer->bytes_wrote += size; + + if (peer->bytes_wrote < DATA_SIZE) /* Have more data to send */ + { + peer->io_write_handle = + GNUNET_STREAM_write (peer->socket, + ((void *) data) + peer->bytes_wrote, + DATA_SIZE - peer->bytes_wrote, + GNUNET_TIME_relative_multiply + (GNUNET_TIME_UNIT_SECONDS, 5), + &write_completion, + cls); + GNUNET_assert (NULL != peer->io_write_handle); + } + else + { + LOG (GNUNET_ERROR_TYPE_DEBUG, "Writing successfully finished\n"); + result = GNUNET_OK; + GNUNET_SCHEDULER_add_now (&do_shutdown, NULL); + } +} + + +/** + * Task for calling STREAM_write with a chunk of random data + * + * @param cls the peer data entity + * @param tc the task context + */ +static void +stream_write_task (void *cls, + const struct GNUNET_SCHEDULER_TaskContext *tc) +{ + struct PeerData *peer=cls; + unsigned int count; + + write_task = GNUNET_SCHEDULER_NO_TASK; + for (count=0; count < DATA_SIZE / 4; count++) + { + data[count]=GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK, + UINT32_MAX); + } + LOG (GNUNET_ERROR_TYPE_DEBUG, "Generation of random data complete\n"); + peer->io_write_handle = GNUNET_STREAM_write (peer->socket, + data, + DATA_SIZE, + GNUNET_TIME_relative_multiply + (GNUNET_TIME_UNIT_SECONDS, 10), + &write_completion, + peer); + GNUNET_assert (NULL != peer->io_write_handle); +} + + +/** + * Function executed after stream has been established + * + * @param cls the closure from GNUNET_STREAM_open + * @param socket socket to use to communicate with the other side (read/write) + */ +static void +stream_open_cb (void *cls, + struct GNUNET_STREAM_Socket *socket) +{ + struct PeerData *peer; + + GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Stream established from peer1\n"); + peer = (struct PeerData *) cls; + peer->bytes_wrote = 0; + GNUNET_assert (socket == peer1.socket); + GNUNET_assert (socket == peer->socket); + write_task = GNUNET_SCHEDULER_add_now (&stream_write_task, peer); +} + + +/** + * Scheduler call back; to be executed when a new stream is connected + * Called from listen connect for peer2 + */ +static void +stream_read_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc); + + +/** + * Input processor + * + * @param cls peer2 + * @param status the status of the stream at the time this function is called + * @param data traffic from the other side + * @param size the number of bytes available in data read + * @return number of bytes of processed from 'data' (any data remaining should be + * given to the next time the read processor is called). + */ +static size_t +input_processor (void *cls, + enum GNUNET_STREAM_Status status, + const void *input_data, + size_t size) +{ + struct PeerData *peer = cls; + + GNUNET_assert (GNUNET_STREAM_OK == status); + GNUNET_assert (&peer2 == peer); + GNUNET_assert (size < DATA_SIZE); + GNUNET_assert (0 == memcmp (((void *)data ) + peer->bytes_read, + input_data, size)); + peer->bytes_read += size; + + if (peer->bytes_read < DATA_SIZE) + { + GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == read_task); + read_task = GNUNET_SCHEDULER_add_now (&stream_read_task, &peer2); + } + else + { + /* Peer2 has completed reading*/ + LOG (GNUNET_ERROR_TYPE_DEBUG, "Reading finished successfully\n"); + } + return size; +} + + +/** + * Scheduler call back; to be executed when a new stream is connected + * Called from listen connect for peer2 + */ +static void +stream_read_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc) +{ + struct PeerData *peer = cls; + + read_task = GNUNET_SCHEDULER_NO_TASK; + GNUNET_assert (&peer2 == peer); + peer->io_read_handle = + GNUNET_STREAM_read (peer->socket, + GNUNET_TIME_relative_multiply + (GNUNET_TIME_UNIT_SECONDS, 10), + &input_processor, + peer); + GNUNET_assert (NULL != peer->io_read_handle); +} + + +/** + * Functions of this type are called upon new stream connection from other peers + * + * @param cls the closure from GNUNET_STREAM_listen + * @param socket the socket representing the stream + * @param initiator the identity of the peer who wants to establish a stream + * with us + * @return GNUNET_OK to keep the socket open, GNUNET_SYSERR to close the + * stream (the socket will be invalid after the call) + */ +static int +stream_listen_cb (void *cls, + struct GNUNET_STREAM_Socket *socket, + const struct GNUNET_PeerIdentity *initiator) +{ + if ((NULL == socket) || (NULL == initiator)) + { + GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "Binding error\n"); + if (GNUNET_SCHEDULER_NO_TASK != abort_task) + GNUNET_SCHEDULER_cancel (abort_task); + abort_task = GNUNET_SCHEDULER_add_now (&do_abort, NULL); + return GNUNET_OK; + } + GNUNET_assert (NULL != socket); + GNUNET_assert (socket != peer1.socket); + GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, + "Peer connected: %s\n", GNUNET_i2s(initiator)); + peer2.socket = socket; + peer2.bytes_read = 0; + read_task = GNUNET_SCHEDULER_add_now (&stream_read_task, &peer2); + return GNUNET_OK; +} + + +/** + * Listen success callback; connects a peer to stream as client + */ +static void +stream_connect (void) +{ + peer1.socket = + GNUNET_STREAM_open (config, + &self_id, /* Null for local peer? */ + 10, /* App port */ + &stream_open_cb, + &peer1, + GNUNET_STREAM_OPTION_TESTING_SET_WRITE_SEQUENCE_NUMBER, + UINT32_MAX - GNUNET_CRYPTO_random_u32 + (GNUNET_CRYPTO_QUALITY_WEAK, 64), + GNUNET_STREAM_OPTION_MAX_PAYLOAD_SIZE, 500, + GNUNET_STREAM_OPTION_END); + GNUNET_assert (NULL != peer1.socket); +} + + +/** + * Initialize framework and start test + */ +static void +run (void *cls, + const struct GNUNET_CONFIGURATION_Handle *cfg, + struct GNUNET_TESTING_Peer *peer) +{ + config = cfg; + self = peer; + (void) GNUNET_TESTING_peer_get_identity (peer, &self_id); + peer2_listen_socket = + GNUNET_STREAM_listen (config, + 10, /* App port */ + &stream_listen_cb, + NULL, + GNUNET_STREAM_OPTION_LISTEN_TIMEOUT, + 60 * 1000, + GNUNET_STREAM_OPTION_SIGNAL_LISTEN_SUCCESS, + &stream_connect, + GNUNET_STREAM_OPTION_END); + GNUNET_assert (NULL != peer2_listen_socket); + abort_task = + GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_multiply + (GNUNET_TIME_UNIT_SECONDS, 100), &do_abort, + NULL); +} + + +/** + * Main function + */ +int main (int argc, char **argv) +{ + if (0 != GNUNET_TESTING_peer_run ("test_stream_sequence_wraparound", + "test_stream_local.conf", + &run, NULL)) + return 1; + return (GNUNET_SYSERR == result) ? 1 : 0; +} + +/* end of test_stream_sequence_wraparound.c */ |