GNUNET_SCHEDULER_TaskIdentifier listen_task;
/**
- * Do we ignore messages of types that we do not
- * understand or do we require that a handler
- * is found (and if not kill the connection)?
+ * Do we ignore messages of types that we do not understand or do we
+ * require that a handler is found (and if not kill the connection)?
*/
int require_found;
/**
- * Should all of the clients of this server continue
- * to process connections as usual even if we get
- * a shutdown request? (the listen socket always ignores
- * shutdown).
+ * Should all of the clients of this server continue to process
+ * connections as usual even if we get a shutdown request? (the
+ * listen socket always ignores shutdown).
*/
int clients_ignore_shutdown;
*/
char *side_buf;
+ /**
+ * ID of task used to restart processing.
+ */
+ GNUNET_SCHEDULER_TaskIdentifier restart_task;
+
/**
* Number of bytes in the side buffer.
*/
*/
int shutdown_now;
+ /**
+ * Are we currently trying to receive?
+ */
+ int receive_pending;
};
/**
* Create and initialize a listen socket for the server.
*
+ * @param serverAddr address to listen on
+ * @param socklen length of address
* @return NULL on error, otherwise the listen socket
*/
static struct GNUNET_NETWORK_Handle *
ret->require_found = require_found;
if (lsocks != NULL)
{
-
r = GNUNET_NETWORK_fdset_create ();
i = 0;
while (NULL != ret->listen_sockets[i])
/**
* Free resources held by this server.
+ *
+ * @param s server to destroy
*/
void
GNUNET_SERVER_destroy (struct GNUNET_SERVER_Handle *s)
{
- struct GNUNET_SERVER_Client *pos;
struct HandlerList *hpos;
struct NotifyList *npos;
unsigned int i;
s->listen_sockets = NULL;
}
while (s->clients != NULL)
- {
- pos = s->clients;
- s->clients = pos->next;
- pos->server = NULL;
- }
+ GNUNET_SERVER_client_disconnect (s->clients);
while (NULL != (hpos = s->handlers))
{
s->handlers = hpos->next;
}
-/**
- * We're finished with this client and especially its input
- * processing. If the RC is zero, free all resources otherwise wait
- * until RC hits zero to do so.
- */
-static void
-shutdown_incoming_processing (struct GNUNET_SERVER_Client *client)
-{
- struct GNUNET_SERVER_Client *prev;
- struct GNUNET_SERVER_Client *pos;
- struct GNUNET_SERVER_Handle *server;
- struct NotifyList *n;
- unsigned int rc;
-
- rc = client->reference_count;
- if (client->server != NULL)
- {
- server = client->server;
- client->server = NULL;
- prev = NULL;
- pos = server->clients;
- while ((pos != NULL) && (pos != client))
- {
- prev = pos;
- pos = pos->next;
- }
- GNUNET_assert (pos != NULL);
- if (prev == NULL)
- server->clients = pos->next;
- else
- prev->next = pos->next;
- n = server->disconnect_notify_list;
- while (n != NULL)
- {
- n->callback (n->callback_cls, client);
- n = n->next;
- }
- }
- /* wait for RC to hit zero, then free */
- if (rc > 0)
- return;
- client->destroy (client->client_closure);
- GNUNET_free (client);
-}
-
-
/**
* Go over the contents of the client buffer; as long as full messages
* are available, pass them on for processing. Update the buffer
client->suspended ? "suspended" : "up",
client->shutdown_now ? "in shutdown" : "running");
#endif
- while ((client->receive_pos >= sizeof (struct GNUNET_MessageHeader)) &&
- (0 == client->suspended) && (GNUNET_YES != client->shutdown_now))
+ while ( (client->receive_pos >= sizeof (struct GNUNET_MessageHeader)) &&
+ (0 == client->suspended) &&
+ (GNUNET_YES != client->shutdown_now) )
{
hdr = (const struct GNUNET_MessageHeader *) &client->incoming_buffer;
msize = ntohs (hdr->size);
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Passing %u bytes to callback for processing\n", msize);
#endif
- if ((msize < sizeof (struct GNUNET_MessageHeader)) ||
- (GNUNET_OK != GNUNET_SERVER_inject (server, client, hdr)))
+ if ( (msize < sizeof (struct GNUNET_MessageHeader)) ||
+ (GNUNET_OK != GNUNET_SERVER_inject (server, client, hdr)) )
{
client->in_process_client_buffer = GNUNET_NO;
- shutdown_incoming_processing (client);
+ GNUNET_SERVER_client_disconnect (client);
return;
}
/* FIXME: this is highly inefficient; we should
}
client->in_process_client_buffer = GNUNET_NO;
if (GNUNET_YES == client->shutdown_now)
- shutdown_incoming_processing (client);
+ GNUNET_SERVER_client_disconnect (client);
}
const char *cbuf = buf;
size_t maxcpy;
+ client->receive_pending = GNUNET_NO;
if ((buf == NULL) ||
(available == 0) ||
(errCode != 0) ||
(client->shutdown_now == GNUNET_YES) ||
(GNUNET_YES != client->check (client->client_closure)))
{
- /* other side closed connection, error connecting, etc. */
- shutdown_incoming_processing (client);
+ /* other side closed connection, error connecting, etc. */
+ GNUNET_SERVER_client_disconnect (client);
return;
}
#if DEBUG_SERVER
(GNUNET_YES != client->shutdown_now) && (client->server != NULL))
{
/* Finally, keep receiving! */
+ client->receive_pending = GNUNET_YES;
client->receive (client->client_closure,
GNUNET_SERVER_MAX_MESSAGE_SIZE,
server->idle_timeout, &process_incoming, client);
}
if (GNUNET_YES == client->shutdown_now)
- shutdown_incoming_processing (client);
+ GNUNET_SERVER_client_disconnect (client);
GNUNET_SERVER_client_drop (client);
}
/**
- * FIXME: document.
+ * Task run to start again receiving from the network
+ * and process requests.
+ *
+ * @param cls our 'struct GNUNET_SERVER_Client*' to process more requests from
+ * @param tc scheduler context (unused)
*/
static void
restart_processing (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
{
struct GNUNET_SERVER_Client *client = cls;
+ struct GNUNET_SERVER_Handle *server = client->server;
+ client->restart_task = GNUNET_SCHEDULER_NO_TASK;
+ if ( (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN)) &&
+ (GNUNET_NO == server->clients_ignore_shutdown) )
+ {
+ GNUNET_SERVER_client_disconnect (client);
+ return;
+ }
GNUNET_SERVER_client_keep (client);
process_client_buffer (client);
if (0 == client->suspended)
- client->receive (client->client_closure,
- GNUNET_SERVER_MAX_MESSAGE_SIZE,
- client->server->idle_timeout, &process_incoming, client);
+ {
+ client->receive_pending = GNUNET_YES;
+ client->receive (client->client_closure,
+ GNUNET_SERVER_MAX_MESSAGE_SIZE,
+ client->server->idle_timeout, &process_incoming, client);
+ }
GNUNET_SERVER_client_drop (client);
}
client->last_activity = GNUNET_TIME_absolute_get ();
client->next = server->clients;
server->clients = client;
+ client->receive_pending = GNUNET_YES;
client->receive (client->client_closure,
GNUNET_SERVER_MAX_MESSAGE_SIZE,
server->idle_timeout, &process_incoming, client);
static void
sock_destroy (void *cls)
{
- GNUNET_CONNECTION_destroy (cls);
+ GNUNET_CONNECTION_destroy (cls, GNUNET_NO);
}
{
GNUNET_assert (client->reference_count > 0);
client->reference_count--;
- if ((client->server == NULL) && (client->reference_count == 0))
- shutdown_incoming_processing (client);
+ if ( (client->shutdown_now == GNUNET_YES) &&
+ (client->reference_count == 0) )
+ GNUNET_SERVER_client_disconnect (client);
}
void
GNUNET_SERVER_client_disconnect (struct GNUNET_SERVER_Client *client)
{
- if (client->server == NULL)
- return; /* already disconnected */
- client->receive_cancel (client->client_closure);
- shutdown_incoming_processing (client);
+ struct GNUNET_SERVER_Client *prev;
+ struct GNUNET_SERVER_Client *pos;
+ struct GNUNET_SERVER_Handle *server;
+ struct NotifyList *n;
+ unsigned int rc;
+
+ if (client->restart_task != GNUNET_SCHEDULER_NO_TASK)
+ {
+ GNUNET_SCHEDULER_cancel (client->server->sched,
+ client->restart_task);
+ client->restart_task = GNUNET_SCHEDULER_NO_TASK;
+ }
+ if (GNUNET_YES == client->receive_pending)
+ {
+ client->receive_cancel (client->client_closure);
+ client->receive_pending = GNUNET_NO;
+ }
+ rc = client->reference_count;
+ if (client->server != NULL)
+ {
+ server = client->server;
+ client->server = NULL;
+ client->shutdown_now = GNUNET_YES;
+ prev = NULL;
+ pos = server->clients;
+ while ((pos != NULL) && (pos != client))
+ {
+ prev = pos;
+ pos = pos->next;
+ }
+ GNUNET_assert (pos != NULL);
+ if (prev == NULL)
+ server->clients = pos->next;
+ else
+ prev->next = pos->next;
+ if (client->restart_task != GNUNET_SCHEDULER_NO_TASK)
+ GNUNET_SCHEDULER_cancel (server->sched,
+ client->restart_task);
+ n = server->disconnect_notify_list;
+ while (n != NULL)
+ {
+ n->callback (n->callback_cls, client);
+ n = n->next;
+ }
+ }
+ if (rc > 0)
+ return;
+ if (client->in_process_client_buffer == GNUNET_YES)
+ return;
+ client->destroy (client->client_closure);
+ GNUNET_free (client);
}
GNUNET_assert (client->suspended > 0);
client->suspended--;
if (success != GNUNET_OK)
- client->shutdown_now = GNUNET_YES;
+ {
+ GNUNET_SERVER_client_disconnect (client);
+ return;
+ }
if (client->suspended > 0)
return;
if (client->in_process_client_buffer == GNUNET_YES)
sb = client->side_buf;
client->side_buf = NULL;
/* this will also resume the receive job */
- if (GNUNET_YES != client->shutdown_now)
- process_incoming (client, sb, client->side_buf_size, NULL, 0, 0);
- else
- shutdown_incoming_processing (client);
+ process_incoming (client, sb, client->side_buf_size, NULL, 0, 0);
/* finally, free the side-buf */
GNUNET_free (sb);
return;
}
- /* resume receive job */
- if (GNUNET_YES != client->shutdown_now)
+ if (client->server == NULL)
{
- GNUNET_SCHEDULER_add_continuation (client->server->sched,
- &restart_processing,
- client,
- GNUNET_SCHEDULER_REASON_PREREQ_DONE);
+ GNUNET_SERVER_client_disconnect (client);
return;
}
- shutdown_incoming_processing (client);
+ client->restart_task = GNUNET_SCHEDULER_add_now (client->server->sched,
+ &restart_processing,
+ client);
}
projects / oweals / gnunet.git / blobdiff