/*
This file is part of GNUnet.
- (C) 2001-2013 Christian Grothoff (and other contributing authors)
+ Copyright (C) 2001-2013 GNUnet e.V.
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
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.
+ Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA.
*/
/**
#include "platform.h"
#include "gnunet_protocols.h"
#include "gnunet_util_lib.h"
+#include "gnunet_socks.h"
/**
* If we are re-trying and are delaying to do so,
* handle to the scheduled task managing the delay.
*/
- GNUNET_SCHEDULER_TaskIdentifier reconnect_task;
+ struct GNUNET_SCHEDULER_Task *reconnect_task;
/**
* Timeout for the operation overall.
* If we are re-trying and are delaying to do so,
* handle to the scheduled task managing the delay.
*/
- GNUNET_SCHEDULER_TaskIdentifier receive_task;
+ struct GNUNET_SCHEDULER_Task * receive_task;
/**
* Buffer for received message.
/**
* Are we currently busy doing receive-processing?
- * #GNUNET_YES if so, #GNUNET_NO if not.
+ * #GNUNET_YES if so, #GNUNET_NO if not. #GNUNET_SYSERR
+ * if the connection has failed (but we may not have
+ * closed the handle itself yet).
*/
int in_receive;
char *hostname;
unsigned long long port;
+ /* Never use a local source if a proxy is configured */
+ if (GNUNET_YES == GNUNET_SOCKS_check_service (service_name,cfg))
+ return GNUNET_SOCKS_do_connect (service_name,cfg);
+
connection = NULL;
if (0 == (attempt % 2))
{
GNUNET_CONNECTION_destroy (client->connection);
client->connection = NULL;
}
- if (GNUNET_SCHEDULER_NO_TASK != client->receive_task)
+ if (NULL != client->receive_task)
{
GNUNET_SCHEDULER_cancel (client->receive_task);
- client->receive_task = GNUNET_SCHEDULER_NO_TASK;
+ client->receive_task = NULL;
}
if (NULL != client->tag)
{
* @param errCode value of errno (on errors receiving)
*/
static void
-receive_helper (void *cls, const void *buf, size_t available,
- const struct sockaddr *addr, socklen_t addrlen, int errCode)
+receive_helper (void *cls,
+ const void *buf,
+ size_t available,
+ const struct sockaddr *addr,
+ socklen_t addrlen,
+ int errCode)
{
struct GNUNET_CLIENT_Connection *client = cls;
struct GNUNET_TIME_Relative remaining;
GNUNET_assert (GNUNET_NO == client->msg_complete);
GNUNET_assert (GNUNET_YES == client->in_receive);
client->in_receive = GNUNET_NO;
- if ((0 == available) || (NULL == client->connection) || (0 != errCode))
+ if ( (0 == available) ||
+ (NULL == client->connection) ||
+ (0 != errCode) )
{
/* signal timeout! */
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Timeout in receive_helper, available %u, client->connection %s, errCode `%s'\n",
- (unsigned int) available, NULL == client->connection ? "NULL" : "non-NULL",
+ (unsigned int) available,
+ NULL == client->connection ? "NULL" : "non-NULL",
STRERROR (errCode));
+ /* remember failure */
+ client->in_receive = GNUNET_SYSERR;
if (NULL != (receive_handler = client->receiver_handler))
{
receive_handler_cls = client->receiver_handler_cls;
client->receiver_handler = NULL;
- receive_handler (receive_handler_cls, NULL);
+ receive_handler (receive_handler_cls,
+ NULL);
}
return;
}
* @param tc scheduler context
*/
static void
-receive_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+receive_task (void *cls,
+ const struct GNUNET_SCHEDULER_TaskContext *tc)
{
struct GNUNET_CLIENT_Connection *client = cls;
GNUNET_CLIENT_MessageHandler handler = client->receiver_handler;
char mbuf[msize] GNUNET_ALIGN;
struct GNUNET_MessageHeader *msg = (struct GNUNET_MessageHeader *) mbuf;
+ client->receive_task = NULL;
+ if ( (GNUNET_SYSERR == client->in_receive) &&
+ (GNUNET_YES != client->msg_complete) )
+ {
+ /* Connection failure, signal to caller! */
+ client->receiver_handler = NULL;
+ if (NULL != handler)
+ handler (handler_cls,
+ NULL);
+ return;
+ }
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Received message of type %u and size %u from %s service.\n",
ntohs (cmsg->type),
msize,
client->service_name);
- client->receive_task = GNUNET_SCHEDULER_NO_TASK;
GNUNET_assert (GNUNET_YES == client->msg_complete);
GNUNET_assert (client->received_pos >= msize);
memcpy (msg, cmsg, msize);
if (NULL == client->connection)
{
/* already disconnected, fail instantly! */
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "Client API violation for service `%s'\n",
+ client->service_name);
GNUNET_break (0); /* this should not happen in well-written code! */
if (NULL != handler)
- handler (handler_cls, NULL);
+ handler (handler_cls,
+ NULL);
return;
}
client->receiver_handler = handler;
client->receiver_handler_cls = handler_cls;
client->receive_timeout = GNUNET_TIME_relative_to_absolute (timeout);
- if (GNUNET_YES == client->msg_complete)
+ if ( (GNUNET_YES == client->msg_complete) ||
+ (GNUNET_SYSERR == client->in_receive) )
{
- GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == client->receive_task);
+ GNUNET_assert (NULL == client->receive_task);
client->receive_task = GNUNET_SCHEDULER_add_now (&receive_task, client);
+ return;
}
- else
- {
- LOG (GNUNET_ERROR_TYPE_DEBUG, "calling GNUNET_CONNECTION_receive\n");
- GNUNET_assert (GNUNET_NO == client->in_receive);
- client->in_receive = GNUNET_YES;
- GNUNET_CONNECTION_receive (client->connection, GNUNET_SERVER_MAX_MESSAGE_SIZE - 1,
- timeout, &receive_helper, client);
- }
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "calling GNUNET_CONNECTION_receive\n");
+ GNUNET_assert (GNUNET_NO == client->in_receive);
+ client->in_receive = GNUNET_YES;
+ GNUNET_CONNECTION_receive (client->connection,
+ GNUNET_SERVER_MAX_MESSAGE_SIZE - 1,
+ timeout,
+ &receive_helper,
+ client);
}
/**
* ID of task used for asynchronous operations.
*/
- GNUNET_SCHEDULER_TaskIdentifier task;
+ struct GNUNET_SCHEDULER_Task * task;
/**
* Final result to report back (once known).
GNUNET_CLIENT_disconnect (th->client);
th->client = NULL;
}
- if (GNUNET_SCHEDULER_NO_TASK != th->task)
+ if (NULL != th->task)
{
GNUNET_SCHEDULER_cancel (th->task);
- th->task = GNUNET_SCHEDULER_NO_TASK;
+ th->task = NULL;
}
GNUNET_free (th);
}
{
struct GNUNET_CLIENT_TestHandle *th = cls;
- th->task = GNUNET_SCHEDULER_NO_TASK;
+ th->task = NULL;
th->cb (th->cb_cls, th->result);
GNUNET_CLIENT_service_test_cancel (th);
}
* @param msg message received, NULL on timeout or fatal error
*/
static void
-confirm_handler (void *cls, const struct GNUNET_MessageHeader *msg)
+confirm_handler (void *cls,
+ const struct GNUNET_MessageHeader *msg)
{
struct GNUNET_CLIENT_TestHandle *th = cls;
* @param cls our `struct GNUNET_CLIENT_TransmissionHandle`
* @param size number of bytes available for transmission
* @param buf where to write them
- * @return number of bytes written to buf
+ * @return number of bytes written to @a buf
*/
static size_t
client_notify (void *cls, size_t size, void *buf);
struct GNUNET_CLIENT_TransmitHandle *th = cls;
struct GNUNET_TIME_Relative delay;
- th->reconnect_task = GNUNET_SCHEDULER_NO_TASK;
+ th->reconnect_task = NULL;
if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
{
/* give up, was shutdown */
"Transmission failed %u times, trying again in %s.\n",
MAX_ATTEMPTS - th->attempts_left,
GNUNET_STRINGS_relative_time_to_string (delay, GNUNET_YES));
- GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == th->reconnect_task);
+ GNUNET_assert (NULL == th->th);
+ GNUNET_assert (NULL == th->reconnect_task);
th->reconnect_task =
GNUNET_SCHEDULER_add_delayed (delay, &client_delayed_retry, th);
return;
* @return number of bytes written to @a buf
*/
static size_t
-client_notify (void *cls, size_t size, void *buf)
+client_notify (void *cls,
+ size_t size,
+ void *buf)
{
struct GNUNET_CLIENT_TransmitHandle *th = cls;
struct GNUNET_CLIENT_Connection *client = th->client;
{
delay = GNUNET_TIME_absolute_get_remaining (th->timeout);
delay.rel_value_us /= 2;
- if ((GNUNET_YES != th->auto_retry) || (0 == --th->attempts_left) ||
- (delay.rel_value_us < 1)||
- (0 != (GNUNET_SCHEDULER_get_reason() & GNUNET_SCHEDULER_REASON_SHUTDOWN)))
+ if ( (GNUNET_YES != th->auto_retry) ||
+ (0 == --th->attempts_left) ||
+ (delay.rel_value_us < 1)||
+ (0 != (GNUNET_SCHEDULER_get_reason() & GNUNET_SCHEDULER_REASON_SHUTDOWN)))
{
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Transmission failed %u times, giving up.\n",
MAX_ATTEMPTS - th->attempts_left);
- GNUNET_break (0 == th->notify (th->notify_cls, 0, NULL));
+ GNUNET_break (0 ==
+ th->notify (th->notify_cls, 0, NULL));
GNUNET_free (th);
return 0;
}
MAX_ATTEMPTS - th->attempts_left,
GNUNET_STRINGS_relative_time_to_string (delay, GNUNET_YES));
client->th = th;
- GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == th->reconnect_task);
+ GNUNET_assert (NULL == th->reconnect_task);
+ GNUNET_assert (NULL == th->th);
th->reconnect_task =
GNUNET_SCHEDULER_add_delayed (delay, &client_delayed_retry, th);
return 0;
{
/* If this breaks, you most likley called this function twice without waiting
* for completion or canceling the request */
- GNUNET_break (0);
+ GNUNET_assert (0);
return NULL;
}
th = GNUNET_new (struct GNUNET_CLIENT_TransmitHandle);
client->th = th;
if (NULL == client->connection)
{
- GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == th->reconnect_task);
+ GNUNET_assert (NULL == th->th);
+ GNUNET_assert (NULL == th->reconnect_task);
th->reconnect_task =
GNUNET_SCHEDULER_add_delayed (client->back_off,
&client_delayed_retry,
th);
-
}
else
{
- th->th =
- GNUNET_CONNECTION_notify_transmit_ready (client->connection, size, timeout,
- &client_notify, th);
+ th->th = GNUNET_CONNECTION_notify_transmit_ready (client->connection,
+ size,
+ timeout,
+ &client_notify,
+ th);
if (NULL == th->th)
{
GNUNET_break (0);
void
GNUNET_CLIENT_notify_transmit_ready_cancel (struct GNUNET_CLIENT_TransmitHandle *th)
{
- if (GNUNET_SCHEDULER_NO_TASK != th->reconnect_task)
+ if (NULL != th->reconnect_task)
{
GNUNET_assert (NULL == th->th);
GNUNET_SCHEDULER_cancel (th->reconnect_task);
- th->reconnect_task = GNUNET_SCHEDULER_NO_TASK;
+ th->reconnect_task = NULL;
}
else
{
* NULL and @a size zero if the socket was closed for
* writing in the meantime.
*
- * @param cls closure of type "struct TransmitGetResponseContext*"
+ * @param cls closure of type `struct TransmitGetResponseContext *`
* @param size number of bytes available in @a buf
* @param buf where the callee should write the message
* @return number of bytes written to @a buf
if (NULL == buf)
{
LOG (GNUNET_ERROR_TYPE_DEBUG,
- _("Could not submit request, not expecting to receive a response.\n"));
+ "Could not submit request, not expecting to receive a response.\n");
if (NULL != tc->rn)
tc->rn (tc->rn_cls, NULL);
GNUNET_free (tc);
}
GNUNET_assert (size >= msize);
memcpy (buf, tc->hdr, msize);
- GNUNET_CLIENT_receive (tc->client, tc->rn, tc->rn_cls,
+ GNUNET_CLIENT_receive (tc->client,
+ tc->rn,
+ tc->rn_cls,
GNUNET_TIME_absolute_get_remaining (tc->timeout));
GNUNET_free (tc);
return msize;
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