#include "gnunet_server_lib.h"
#include "gnunet_scheduler_lib.h"
-#define DEBUG_CLIENT GNUNET_NO
-
+#define DEBUG_CLIENT GNUNET_YES
/**
* How often do we re-try tranmsitting requests before giving up?
* Note that if we succeeded transmitting a request but failed to read
* a response, we do NOT re-try.
*/
-#define MAX_ATTEMPTS 10
+#define MAX_ATTEMPTS 50
/**
void *rn_cls;
};
-
/**
* Struct to refer to a GNUnet TCP connection.
* This is more than just a socket because if the server
*/
GNUNET_SCHEDULER_Task test_cb;
+ /**
+ * Deadline for calling 'test_cb'.
+ */
+ struct GNUNET_TIME_Absolute test_deadline;
+
/**
* If we are re-trying and are delaying to do so,
* handle to the scheduled task managing the delay.
*/
int in_receive;
+ /**
+ * Are we ignoring shutdown signals?
+ */
+ int ignore_shutdown;
+
};
}
+/**
+ * Configure this connection to ignore shutdown signals.
+ *
+ * @param h client handle
+ * @param do_ignore GNUNET_YES to ignore, GNUNET_NO to restore default
+ */
+void
+GNUNET_CLIENT_ignore_shutdown (struct GNUNET_CLIENT_Connection *h,
+ int do_ignore)
+{
+ h->ignore_shutdown = do_ignore;
+ if (h->sock != NULL)
+ GNUNET_CONNECTION_ignore_shutdown (h->sock,
+ do_ignore);
+}
+
+
/**
* Destroy connection with the service. This will automatically
* cancel any pending "receive" request (however, the handler will
* *NOT* be called, not even with a NULL message). Any pending
* transmission request will also be cancelled UNLESS the callback for
* the transmission request has already been called, in which case the
- * transmission is guaranteed to complete before the socket is fully
- * destroyed (unless, of course, there is an error with the server
- * in which case the message may still be lost).
+ * transmission 'finish_pending_write' argument determines whether or
+ * not the write is guaranteed to complete before the socket is fully
+ * destroyed (unless, of course, there is an error with the server in
+ * which case the message may still be lost).
*
+ * @param finish_pending_write should a transmission already passed to the
+ * handle be completed?
* @param sock handle to the service connection
*/
void
-GNUNET_CLIENT_disconnect (struct GNUNET_CLIENT_Connection *sock)
+GNUNET_CLIENT_disconnect (struct GNUNET_CLIENT_Connection *sock,
+ int finish_pending_write)
{
GNUNET_assert (sock->sock != NULL);
if (sock->in_receive == GNUNET_YES)
GNUNET_CONNECTION_receive_cancel (sock->sock);
sock->in_receive = GNUNET_NO;
}
- GNUNET_CONNECTION_destroy (sock->sock);
+ GNUNET_CONNECTION_destroy (sock->sock, finish_pending_write);
sock->sock = NULL;
if (sock->tag != NULL)
{
}
-/**
- * If possible, write a shutdown message to the target
- * buffer and destroy the client connection.
- *
- * @param cls the "struct GNUNET_CLIENT_Connection" to destroy
- * @param size number of bytes available in buf
- * @param buf NULL on error, otherwise target buffer
- * @return number of bytes written to buf
- */
-static size_t
-write_shutdown (void *cls, size_t size, void *buf)
-{
- struct GNUNET_MessageHeader *msg;
- struct GNUNET_CLIENT_Connection *sock = cls;
-
- GNUNET_CLIENT_disconnect (sock);
- if (size < sizeof (struct GNUNET_MessageHeader))
- {
- GNUNET_log (GNUNET_ERROR_TYPE_INFO,
- _("Failed to transmit shutdown request to client.\n"));
- return 0; /* client disconnected */
- }
- msg = (struct GNUNET_MessageHeader *) buf;
- msg->type = htons (GNUNET_MESSAGE_TYPE_SHUTDOWN);
- msg->size = htons (sizeof (struct GNUNET_MessageHeader));
- return sizeof (struct GNUNET_MessageHeader);
-}
-
-
-/**
- * Request that the service should shutdown.
- * Afterwards, the connection should be disconnected.
- *
- * @param sock the socket connected to the service
- */
-void
-GNUNET_CLIENT_service_shutdown (struct GNUNET_CLIENT_Connection *sock)
-{
- GNUNET_CONNECTION_notify_transmit_ready (sock->sock,
- sizeof (struct
- GNUNET_MessageHeader),
- GNUNET_TIME_UNIT_FOREVER_REL,
- &write_shutdown, sock);
-}
-
-
/**
* Report service unavailable.
*/
{
service_test_error (conn->sched, conn->test_cb, conn->test_cb_cls);
}
- GNUNET_CLIENT_disconnect (conn);
+ GNUNET_CLIENT_disconnect (conn, GNUNET_NO);
}
static size_t
write_test (void *cls, size_t size, void *buf)
{
+ struct GNUNET_CLIENT_Connection *conn = cls;
struct GNUNET_MessageHeader *msg;
if (size < sizeof (struct GNUNET_MessageHeader))
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
_("Failure to transmit TEST request.\n"));
#endif
+ service_test_error (conn->sched, conn->test_cb, conn->test_cb_cls);
+ GNUNET_CLIENT_disconnect (conn, GNUNET_NO);
return 0; /* client disconnected */
}
#if DEBUG_CLIENT
msg = (struct GNUNET_MessageHeader *) buf;
msg->type = htons (GNUNET_MESSAGE_TYPE_TEST);
msg->size = htons (sizeof (struct GNUNET_MessageHeader));
+ GNUNET_CLIENT_receive (conn,
+ &confirm_handler,
+ conn,
+ GNUNET_TIME_absolute_get_remaining (conn->test_deadline));
return sizeof (struct GNUNET_MessageHeader);
}
}
conn->test_cb = task;
conn->test_cb_cls = task_cls;
- if (NULL ==
- GNUNET_CONNECTION_notify_transmit_ready (conn->sock,
- sizeof (struct
- GNUNET_MessageHeader),
- timeout, &write_test, NULL))
+ conn->test_deadline = GNUNET_TIME_relative_to_absolute (timeout);
+
+ if (NULL == GNUNET_CLIENT_notify_transmit_ready (conn,
+ sizeof (struct GNUNET_MessageHeader),
+ timeout,
+ GNUNET_YES,
+ &write_test, conn))
{
GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
_("Failure to transmit request to service `%s'\n"),
service);
service_test_error (sched, task, task_cls);
- GNUNET_CLIENT_disconnect (conn);
+ GNUNET_CLIENT_disconnect (conn, GNUNET_NO);
return;
}
- GNUNET_CLIENT_receive (conn, &confirm_handler, conn, timeout);
}
/**
- * Connection notifies us about failure or success of
- * a transmission request. Either pass it on to our
- * user or, if possible, retry.
+ * Connection notifies us about failure or success of a transmission
+ * request. Either pass it on to our user or, if possible, retry.
*
* @param cls our "struct GNUNET_CLIENT_TransmissionHandle"
* @param size number of bytes available for transmission
return 0;
}
/* auto-retry */
- GNUNET_CONNECTION_destroy (th->sock->sock);
+ GNUNET_CONNECTION_destroy (th->sock->sock, GNUNET_NO);
th->sock->sock = do_connect (th->sock->sched,
th->sock->service_name, th->sock->cfg);
GNUNET_assert (NULL != th->sock->sock);
+ GNUNET_CONNECTION_ignore_shutdown (th->sock->sock,
+ th->sock->ignore_shutdown);
delay = GNUNET_TIME_relative_min (delay, th->sock->back_off);
th->sock->back_off
- = GNUNET_TIME_relative_min (GNUNET_TIME_relative_multiply (th->sock->back_off, 2),
+ = GNUNET_TIME_relative_min (GNUNET_TIME_relative_multiply (th->sock->back_off, 2),
GNUNET_TIME_UNIT_SECONDS);
#if DEBUG_CLIENT
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
msize = ntohs (tc->hdr->size);
if (NULL == buf)
{
+#if DEBUG_CLIENT
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ _("Could not submit request, not expecting to receive a response.\n"));
+#endif
tc->rn (tc->rn_cls, NULL);
GNUNET_free (tc);
return 0;
projects / oweals / gnunet.git / blobdiff