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Diffstat (limited to 'src/stream/test_stream_2peers_halfclose.c')
| -rw-r--r-- | src/stream/test_stream_2peers_halfclose.c | 786 |
1 files changed, 786 insertions, 0 deletions
diff --git a/src/stream/test_stream_2peers_halfclose.c b/src/stream/test_stream_2peers_halfclose.c new file mode 100644 index 0000000..7997c20 --- /dev/null +++ b/src/stream/test_stream_2peers_halfclose.c @@ -0,0 +1,786 @@ +/* + 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_2peers_halfclose.c + * @brief Testcases for Stream API halfclosed connections between 2 peers + * @author Sree Harsha Totakura + */ + +#include <string.h> + +#include "platform.h" +#include "gnunet_util_lib.h" +#include "gnunet_mesh_service.h" +#include "gnunet_stream_lib.h" +#include "gnunet_testing_lib.h" +#include "gnunet_scheduler_lib.h" + +#define VERBOSE 1 + +/** + * Number of peers + */ +#define NUM_PEERS 2 + +/** + * 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_IOWriteHandle *io_write_handle; + + /** + * Peer's io read handle + */ + struct GNUNET_STREAM_IOReadHandle *io_read_handle; + + /** + * Peer's shutdown handle + */ + struct GNUNET_STREAM_ShutdownHandle *shutdown_handle; + + /** + * Our Peer id + */ + struct GNUNET_PeerIdentity our_id; + + /** + * Bytes the peer has written + */ + unsigned int bytes_wrote; + + /** + * Byte the peer has read + */ + unsigned int bytes_read; + + /** + * GNUNET_YES if the peer has successfully completed the current test + */ + unsigned int test_ok; + + /** + * The shutdown operation that has to be used by the stream_shutdown_task + */ + int shutdown_operation; +}; + +/** + * The current peer group + */ +static struct GNUNET_TESTING_PeerGroup *pg; + +/** + * Peer 1 daemon + */ +static struct GNUNET_TESTING_Daemon *d1; + +/** + * Peer 2 daemon + */ +static struct GNUNET_TESTING_Daemon *d2; + + +/** + * Peer1 writes first and then calls for SHUT_WR + * Peer2 reads first and then calls for SHUT_RD + * Attempt to write again by Peer1 should be rejected + * Attempt to read again by Peer2 should be rejected + * Peer1 then reads from Peer2 which writes + */ +static struct PeerData peer1; +static struct PeerData peer2; +static struct GNUNET_STREAM_ListenSocket *peer2_listen_socket; +static struct GNUNET_CONFIGURATION_Handle *config; + +static GNUNET_SCHEDULER_TaskIdentifier abort_task; +static GNUNET_SCHEDULER_TaskIdentifier read_task; + +static char *data = "ABCD"; +static int result; + +/** + * Enumeration for various tests that are to be passed in the same order as + * below + */ +enum Test + { + /** + * Peer1 writing; Peer2 reading + */ + PEER1_WRITE, + + /** + * Peer1 write shutdown; Peer2 should get an error when it tries to read; + */ + PEER1_WRITE_SHUTDOWN, + + /** + * Peer1 reads; Peer2 writes (connection is halfclosed) + */ + PEER1_HALFCLOSE_READ, + + /** + * Peer1 attempts to write; Should fail with stream already shutdown error + */ + PEER1_HALFCLOSE_WRITE_FAIL, + + /** + * Peer1 read shutdown; Peer2 should get stream shutdown error during write + */ + PEER1_READ_SHUTDOWN, + + /** + * All tests successfully finished + */ + SUCCESS + }; + +/** + * Current running test + */ +enum Test current_test; + +/** + * Input processor + * + * @param cls the closure from GNUNET_STREAM_write/read + * @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); + + +/** + * The transition function; responsible for the transitions among tests + */ +static void +transition(); + + +/** + * Task for calling STREAM_read + * + * @param cls the peer data entity + * @param tc the task context + */ +static void +stream_read_task (void *cls, + const struct GNUNET_SCHEDULER_TaskContext *tc) +{ + struct PeerData *peer = cls; + + peer->io_read_handle = GNUNET_STREAM_read (peer->socket, + GNUNET_TIME_relative_multiply + (GNUNET_TIME_UNIT_SECONDS, 5), + &input_processor, + cls); + switch (current_test) + { + case PEER1_WRITE_SHUTDOWN: + GNUNET_assert (&peer2 == peer); + GNUNET_assert (NULL == peer->io_read_handle); + transition (); /* to PEER1_HALFCLOSE_READ */ + break; + default: + GNUNET_assert (NULL != peer->io_read_handle); + } +} + + +/** + * 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); + + +/** + * Task for calling STREAM_write + * + * @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; + + peer->io_write_handle = + GNUNET_STREAM_write (peer->socket, + (void *) data, + strlen(data) - peer->bytes_wrote, + GNUNET_TIME_relative_multiply + (GNUNET_TIME_UNIT_SECONDS, 5), + &write_completion, + peer); + switch (current_test) + { + case PEER1_HALFCLOSE_WRITE_FAIL: + GNUNET_assert (&peer1 == peer); + GNUNET_assert (NULL == peer->io_write_handle); + transition(); /* To PEER1_READ_SHUTDOWN */ + break; + case PEER1_READ_SHUTDOWN: + GNUNET_assert (&peer2 == peer); + GNUNET_assert (NULL == peer->io_write_handle); + transition (); /* To SUCCESS */ + break; + default: + GNUNET_assert (NULL != peer->io_write_handle); + } +} + + +/** + * Check whether peers successfully shut down. + */ +static void +peergroup_shutdown_callback (void *cls, const char *emsg) +{ + if (emsg != NULL) + { + GNUNET_log (GNUNET_ERROR_TYPE_WARNING, + "Shutdown of peers failed!\n"); + } + else + { + GNUNET_log (GNUNET_ERROR_TYPE_INFO, + "All peers successfully shut down!\n"); + } + GNUNET_CONFIGURATION_destroy (config); +} + + +/** + * Close sockets and stop testing deamons nicely + */ +static void +do_close (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc) +{ + 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); + + GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "test: shutdown\n"); + if (0 != abort_task) + { + GNUNET_SCHEDULER_cancel (abort_task); + } + + GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "test: Wait\n"); + + GNUNET_TESTING_daemons_stop (pg, + GNUNET_TIME_relative_multiply + (GNUNET_TIME_UNIT_SECONDS, 5), + &peergroup_shutdown_callback, + NULL); +} + + +/** + * 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) + */ +void +shutdown_completion (void *cls, + int operation) +{ + switch (current_test) + { + case PEER1_WRITE: + GNUNET_assert (0); + case PEER1_WRITE_SHUTDOWN: + GNUNET_assert (cls == &peer1); + GNUNET_assert (SHUT_WR == operation); + peer1.test_ok = GNUNET_YES; + /* Peer2 should read with error */ + peer2.bytes_read = 0; + GNUNET_SCHEDULER_add_now (&stream_read_task, &peer2); + break; + case PEER1_READ_SHUTDOWN: + peer1.test_ok = GNUNET_YES; + peer2.bytes_wrote = 0; + GNUNET_SCHEDULER_add_now (&stream_write_task, &peer2); + break; + case PEER1_HALFCLOSE_READ: + case PEER1_HALFCLOSE_WRITE_FAIL: + case SUCCESS: + GNUNET_assert (0); /* We shouldn't reach here */ + } +} + + +/** + * Task for calling STREAM_shutdown + * + * @param cls the peer entity + * @param tc the TaskContext + */ +static void +stream_shutdown_task (void *cls, + const struct GNUNET_SCHEDULER_TaskContext *tc) +{ + struct PeerData *peer = cls; + + peer->shutdown_handle = GNUNET_STREAM_shutdown (peer->socket, + peer->shutdown_operation, + &shutdown_completion, + peer); + GNUNET_assert (NULL != peer->shutdown_handle); +} + + +/** + * 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 (0 != read_task) + { + GNUNET_SCHEDULER_cancel (read_task); + } + result = GNUNET_SYSERR; + abort_task = 0; + do_close (cls, tc); +} + + +/** + * The transition function; responsible for the transitions among tests + */ +static void +transition() +{ + if ((GNUNET_YES == peer1.test_ok) && (GNUNET_YES == peer2.test_ok)) + { + peer1.test_ok = GNUNET_NO; + peer2.test_ok = GNUNET_NO; + GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, + "TEST %d SUCCESSFULL\n", current_test); + switch (current_test) + { + case PEER1_WRITE: + current_test = PEER1_WRITE_SHUTDOWN; + /* Peer1 should shutdown writing */ + peer1.shutdown_operation = SHUT_WR; + GNUNET_SCHEDULER_add_now (&stream_shutdown_task, &peer1); + break; + case PEER1_WRITE_SHUTDOWN: + current_test = PEER1_HALFCLOSE_READ; + /* Peer2 should be able to write successfully */ + peer2.bytes_wrote = 0; + GNUNET_SCHEDULER_add_now (&stream_write_task, &peer2); + + /* Peer1 should be able to read successfully */ + peer1.bytes_read = 0; + GNUNET_SCHEDULER_add_now (&stream_read_task, &peer1); + break; + case PEER1_HALFCLOSE_READ: + current_test = PEER1_HALFCLOSE_WRITE_FAIL; + peer1.bytes_wrote = 0; + peer2.bytes_read = 0; + peer2.test_ok = GNUNET_YES; + GNUNET_SCHEDULER_add_now (&stream_write_task, &peer1); + break; + case PEER1_HALFCLOSE_WRITE_FAIL: + current_test = PEER1_READ_SHUTDOWN; + peer1.shutdown_operation = SHUT_RD; + GNUNET_SCHEDULER_add_now (&stream_shutdown_task, &peer1); + break; + case PEER1_READ_SHUTDOWN: + current_test = SUCCESS; + GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, + "All tests successful\n"); + GNUNET_SCHEDULER_add_now (&do_close, NULL); + break; + case SUCCESS: + GNUNET_assert (0); /* We shouldn't reach here */ + + } + } +} + +/** + * 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 = cls; + + switch (current_test) + { + case PEER1_WRITE: + case PEER1_HALFCLOSE_READ: + + GNUNET_assert (GNUNET_STREAM_OK == status); + GNUNET_assert (size <= strlen (data)); + peer->bytes_wrote += size; + + if (peer->bytes_wrote < strlen(data)) /* Have more data to send */ + { + GNUNET_SCHEDULER_add_now (&stream_write_task, peer); + } + else + { + GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, + "Writing completed\n"); + + if (&peer1 == peer) + { + peer1.test_ok = GNUNET_YES; + transition (); /* to PEER1_WRITE_SHUTDOWN */ + } + else /* This will happen during PEER1_HALFCLOSE_READ */ + { + peer2.test_ok = GNUNET_YES; + transition (); /* to PEER1_HALFCLOSE_WRITE_FAIL */ + } + } + break; + case PEER1_HALFCLOSE_WRITE_FAIL: + GNUNET_assert (peer == &peer1); + GNUNET_assert (GNUNET_STREAM_SHUTDOWN == status); + GNUNET_assert (0 == size); + peer1.test_ok = GNUNET_YES; + break; + case PEER1_READ_SHUTDOWN: + GNUNET_assert (peer == &peer2); + GNUNET_assert (GNUNET_STREAM_SHUTDOWN == status); + GNUNET_assert (0 == size); + peer2.test_ok = GNUNET_YES; + break; + case PEER1_WRITE_SHUTDOWN: + case SUCCESS: + GNUNET_assert (0); /* We shouldn't reach here */ + } +} + + +/** + * 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_assert (socket == peer1.socket); + GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, + "%s: Stream established from peer1\n", + GNUNET_i2s (&peer1.our_id)); + peer = (struct PeerData *) cls; + peer->bytes_wrote = 0; + GNUNET_assert (socket == peer1.socket); + GNUNET_assert (socket == peer->socket); + peer1.test_ok = GNUNET_NO; + peer2.test_ok = GNUNET_NO; + current_test = PEER1_WRITE; + GNUNET_SCHEDULER_add_now (&stream_write_task, peer); +} + + +/** + * Input processor + * + * @param cls the closure from GNUNET_STREAM_write/read + * @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; + + peer = (struct PeerData *) cls; + + switch (current_test) + { + case PEER1_WRITE: + case PEER1_HALFCLOSE_READ: + if (GNUNET_STREAM_TIMEOUT == status) + { + GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, + "Read operation timedout - reading again!\n"); + GNUNET_assert (0 == size); + GNUNET_SCHEDULER_add_now (&stream_read_task, peer); + return 0; + } + + GNUNET_assert (GNUNET_STREAM_OK == status); + GNUNET_assert (size <= strlen (data)); + GNUNET_assert (0 == strncmp ((const char *) data + peer->bytes_read, + (const char *) input_data, + size)); + peer->bytes_read += size; + + if (peer->bytes_read < strlen (data)) + { + GNUNET_SCHEDULER_add_now (&stream_read_task, peer); + } + else + { + if (&peer2 == peer) /* Peer2 has completed reading; should write */ + { + peer2.test_ok = GNUNET_YES; + transition (); /* Transition to PEER1_WRITE_SHUTDOWN */ + } + else /* Peer1 has completed reading. End of tests */ + { + peer1.test_ok = GNUNET_YES; + transition (); /* to PEER1_HALFCLOSE_WRITE_FAIL */ + } + } + break; + case PEER1_WRITE_SHUTDOWN: + GNUNET_assert (GNUNET_STREAM_SHUTDOWN == status); + peer2.test_ok = GNUNET_YES; + break; + case PEER1_HALFCLOSE_WRITE_FAIL: + case PEER1_READ_SHUTDOWN: + case SUCCESS: + GNUNET_assert (0); /* We shouldn't reach here */ + } + + return size; +} + + +/** + * Scheduler call back; to be executed when a new stream is connected + * Called from listen connect for peer2 + */ +static void +stream_read (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc) +{ + read_task = GNUNET_SCHEDULER_NO_TASK; + GNUNET_assert (NULL != cls); + peer2.bytes_read = 0; + GNUNET_SCHEDULER_add_now (&stream_read_task, &peer2); +} + + +/** + * 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) +{ + GNUNET_assert (NULL != socket); + GNUNET_assert (NULL != initiator); + GNUNET_assert (socket != peer1.socket); + + GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, + "%s: Peer connected: %s\n", + GNUNET_i2s (&peer2.our_id), + GNUNET_i2s(initiator)); + + peer2.socket = socket; + /* FIXME: reading should be done right now instead of a scheduled call */ + read_task = GNUNET_SCHEDULER_add_now (&stream_read, (void *) socket); + return GNUNET_OK; +} + + +/** + * Callback to be called when testing peer group is ready + * + * @param cls NULL + * @param emsg NULL on success + */ +void +peergroup_ready (void *cls, const char *emsg) +{ + if (NULL != emsg) + { + GNUNET_log (GNUNET_ERROR_TYPE_ERROR, + "Starting peer group failed: %s\n", emsg); + return; + } + GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, + "Peer group is now ready\n"); + + GNUNET_assert (2 == GNUNET_TESTING_daemons_running (pg)); + + d1 = GNUNET_TESTING_daemon_get (pg, 0); + GNUNET_assert (NULL != d1); + + d2 = GNUNET_TESTING_daemon_get (pg, 1); + GNUNET_assert (NULL != d2); + + GNUNET_TESTING_get_peer_identity (d1->cfg, + &peer1.our_id); + GNUNET_TESTING_get_peer_identity (d2->cfg, + &peer2.our_id); + GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, + "%s : %s\n", + GNUNET_i2s (&peer1.our_id), + GNUNET_i2s (&d1->id)); + GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, + "%s : %s\n", + GNUNET_i2s (&peer2.our_id), + GNUNET_i2s (&d2->id)); + + peer2_listen_socket = GNUNET_STREAM_listen (d2->cfg, + 10, /* App port */ + &stream_listen_cb, + NULL); + GNUNET_assert (NULL != peer2_listen_socket); + + /* Connect to stream library */ + peer1.socket = GNUNET_STREAM_open (d1->cfg, + &d2->id, /* Null for local peer? */ + 10, /* App port */ + &stream_open_cb, + &peer1, + GNUNET_STREAM_OPTION_END); + GNUNET_assert (NULL != peer1.socket); +} + + +/** + * Initialize framework and start test + */ +static void +run (void *cls, char *const *args, const char *cfgfile, + const struct GNUNET_CONFIGURATION_Handle *cfg) +{ + struct GNUNET_TESTING_Host *hosts; /* FIXME: free hosts (DLL) */ + + /* GNUNET_log_setup ("test_stream_local", */ + /* "DEBUG", */ + /* NULL); */ + + GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, + "Starting test\n"); + /* Duplicate the configuration */ + config = GNUNET_CONFIGURATION_dup (cfg); + + hosts = GNUNET_TESTING_hosts_load (config); + + pg = GNUNET_TESTING_peergroup_start (config, + 2, + GNUNET_TIME_relative_multiply + (GNUNET_TIME_UNIT_SECONDS, 3), + NULL, + &peergroup_ready, + NULL, + hosts); + GNUNET_assert (NULL != pg); + + abort_task = + GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_multiply + (GNUNET_TIME_UNIT_SECONDS, 40), &do_abort, + NULL); +} + +/** + * Main function + */ +int main (int argc, char **argv) +{ + int ret; + + char *argv2[] = { "test-stream-2peers-halfclose", + "-L", "DEBUG", + "-c", "test_stream_local.conf", + NULL}; + + struct GNUNET_GETOPT_CommandLineOption options[] = { + GNUNET_GETOPT_OPTION_END + }; + + ret = + GNUNET_PROGRAM_run ((sizeof (argv2) / sizeof (char *)) - 1, argv2, + "test-stream-2peers-halfclose", "nohelp", options, &run, NULL); + + if (GNUNET_OK != ret) + { + GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "run failed with error code %d\n", + ret); + return 1; + } + if (GNUNET_SYSERR == result) + { + GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "test failed\n"); + return 1; + } + GNUNET_log (GNUNET_ERROR_TYPE_INFO, "test ok\n"); + return 0; +} |