#include "gnunet_container_lib.h"
#include "gnunet_resolver_service.h"
#include "gnunet_scheduler_lib.h"
+#include "gnunet_server_lib.h"
#define DEBUG_CONNECTION GNUNET_NO
-
/**
* Possible functions to call after connect failed or succeeded.
*/
struct GNUNET_CONNECTION_Handle
{
- /**
- * Scheduler that was used for the connect task.
- */
- struct GNUNET_SCHEDULER_Handle *sched;
-
/**
* Configuration to use.
*/
char *write_buffer;
/**
- * Size of our write buffer.
+ * Current size of our write buffer.
*/
size_t write_buffer_size;
/**
* Current read-offset in write buffer (how many
- * bytes have already been send).
+ * bytes have already been sent).
*/
size_t write_buffer_pos;
*/
GNUNET_SCHEDULER_TaskIdentifier write_task;
+ /**
+ * Destroy task (if already scheduled).
+ */
+ GNUNET_SCHEDULER_TaskIdentifier destroy_task;
+
/**
* Handle to a pending DNS lookup request.
*/
*/
size_t max;
+ /**
+ * Ignore GNUNET_SCHEDULER_REASON_SHUTDOWN for this socket.
+ */
+ int ignore_shutdown;
+
/**
* Port to connect to.
*/
uint16_t port;
+ /**
+ * When shutdown, do not ever actually close the socket, but
+ * free resources. Only should ever be set if using program
+ * termination as a signal (because only then will the leaked
+ * socket be freed!)
+ */
+ int16_t persist;
+
};
+/**
+ * Set the persist option on this connection handle. Indicates
+ * that the underlying socket or fd should never really be closed.
+ * Used for indicating process death.
+ *
+ * @param sock the connection to set persistent
+ */
+void GNUNET_CONNECTION_persist_(struct GNUNET_CONNECTION_Handle *sock)
+{
+ sock->persist = GNUNET_YES;
+}
+
+
+/**
+ * Disable the "CORK" feature for communication with the given socket,
+ * forcing the OS to immediately flush the buffer on transmission
+ * instead of potentially buffering multiple messages. Essentially
+ * reduces the OS send buffers to zero.
+ * Used to make sure that the last messages sent through the connection
+ * reach the other side before the process is terminated.
+ *
+ * @param sock the connection to make flushing and blocking
+ * @return GNUNET_OK on success
+ */
+int GNUNET_CONNECTION_disable_corking (struct GNUNET_CONNECTION_Handle *sock)
+{
+ return GNUNET_NETWORK_socket_disable_corking (sock->sock);
+}
/**
* Create a socket handle by boxing an existing OS socket. The OS
* socket should henceforth be no longer used directly.
* GNUNET_socket_destroy will close it.
*
- * @param sched scheduler to use
* @param osSocket existing socket to box
- * @param maxbuf maximum write buffer size for the socket (use
- * 0 for sockets that need no write buffers, such as listen sockets)
* @return the boxed socket handle
*/
struct GNUNET_CONNECTION_Handle *
-GNUNET_CONNECTION_create_from_existing (struct GNUNET_SCHEDULER_Handle
- *sched,
- struct GNUNET_NETWORK_Handle
- *osSocket, size_t maxbuf)
+GNUNET_CONNECTION_create_from_existing (struct GNUNET_NETWORK_Handle
+ *osSocket)
{
struct GNUNET_CONNECTION_Handle *ret;
- ret = GNUNET_malloc (sizeof (struct GNUNET_CONNECTION_Handle) + maxbuf);
- ret->write_buffer = (char *) &ret[1];
- ret->write_buffer_size = maxbuf;
+ ret = GNUNET_malloc (sizeof (struct GNUNET_CONNECTION_Handle));
+ ret->write_buffer_size = GNUNET_SERVER_MIN_BUFFER_SIZE;
+ ret->write_buffer = GNUNET_malloc(ret->write_buffer_size);
ret->sock = osSocket;
- ret->sched = sched;
return ret;
}
* Create a socket handle by accepting on a listen socket. This
* function may block if the listen socket has no connection ready.
*
- * @param sched scheduler to use
* @param access function to use to check if access is allowed
* @param access_cls closure for access
* @param lsock listen socket
- * @param maxbuf maximum write buffer size for the socket (use
- * 0 for sockets that need no write buffers, such as listen sockets)
* @return the socket handle, NULL on error
*/
struct GNUNET_CONNECTION_Handle *
-GNUNET_CONNECTION_create_from_accept (struct GNUNET_SCHEDULER_Handle
- *sched,
- GNUNET_CONNECTION_AccessCheck access,
+GNUNET_CONNECTION_create_from_accept (GNUNET_CONNECTION_AccessCheck access,
void *access_cls,
- struct GNUNET_NETWORK_Handle *lsock,
- size_t maxbuf)
+ struct GNUNET_NETWORK_Handle *lsock)
{
struct GNUNET_CONNECTION_Handle *ret;
- char addr[32];
+ char addr[128];
socklen_t addrlen;
struct GNUNET_NETWORK_Handle *sock;
int aret;
struct sockaddr_in6 *v6;
struct sockaddr *sa;
void *uaddr;
+ struct GNUNET_CONNECTION_Credentials *gcp;
+ struct GNUNET_CONNECTION_Credentials gc;
+#ifdef SO_PEERCRED
+ struct ucred uc;
+ socklen_t olen;
+#endif
addrlen = sizeof (addr);
sock =
GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "accept");
return NULL;
}
- if (addrlen > sizeof (addr))
+ if ( (addrlen > sizeof (addr)) ||
+ (addrlen < sizeof (sa_family_t)) )
{
GNUNET_break (0);
GNUNET_break (GNUNET_OK == GNUNET_NETWORK_socket_close (sock));
v4 = GNUNET_malloc (sizeof (struct sockaddr_in));
memset (v4, 0, sizeof (struct sockaddr_in));
v4->sin_family = AF_INET;
+#if HAVE_SOCKADDR_IN_SIN_LEN
+ v4->sin_len = (u_char) sizeof (struct sockaddr_in);
+#endif
memcpy (&v4->sin_addr,
&((char *) &v6->sin6_addr)[sizeof (struct in6_addr) -
sizeof (struct in_addr)],
uaddr = GNUNET_malloc (addrlen);
memcpy (uaddr, addr, addrlen);
}
+ gcp = NULL;
+ gc.uid = 0;
+ gc.gid = 0;
+ if (sa->sa_family == AF_UNIX)
+ {
+#if HAVE_GETPEEREID
+ /* most BSDs */
+ if (0 == getpeereid (GNUNET_NETWORK_get_fd (sock),
+ &gc.uid,
+ &gc.gid))
+ gcp = &gc;
+#else
+#ifdef SO_PEERCRED
+ /* largely traditional GNU/Linux */
+ olen = sizeof (uc);
+ if ( (0 ==
+ getsockopt (GNUNET_NETWORK_get_fd (sock),
+ SOL_SOCKET, SO_PEERCRED, &uc, &olen)) &&
+ (olen == sizeof (uc)) )
+ {
+ gc.uid = uc.uid;
+ gc.gid = uc.gid;
+ gcp = &gc;
+ }
+#else
+#if HAVE_GETPEERUCRED
+ /* this is for Solaris 10 */
+ ucred_t *uc;
+
+ uc = NULL;
+ if (0 == getpeerucred (GNUNET_NETWORK_get_fd (sock), &uc))
+ {
+ gc.uid = ucred_geteuid (uc);
+ gc.gid = ucred_getegid (uc);
+ gcp = &gc;
+ }
+ ucred_free (uc);
+#endif
+#endif
+#endif
+ }
if ((access != NULL) &&
- (GNUNET_YES != (aret = access (access_cls, uaddr, addrlen))))
+ (GNUNET_YES != (aret = access (access_cls, gcp, uaddr, addrlen))))
{
if (aret == GNUNET_NO)
GNUNET_log (GNUNET_ERROR_TYPE_INFO,
GNUNET_free (uaddr);
return NULL;
}
- ret = GNUNET_malloc (sizeof (struct GNUNET_CONNECTION_Handle) + maxbuf);
- ret->write_buffer = (char *) &ret[1];
- ret->write_buffer_size = maxbuf;
+ ret = GNUNET_malloc (sizeof (struct GNUNET_CONNECTION_Handle));
+ ret->write_buffer_size = GNUNET_SERVER_MIN_BUFFER_SIZE;
+ ret->write_buffer = GNUNET_malloc(ret->write_buffer_size);
ret->addr = uaddr;
ret->addrlen = addrlen;
ret->sock = sock;
- ret->sched = sched;
#if DEBUG_CONNECTION
GNUNET_log (GNUNET_ERROR_TYPE_INFO,
_("Accepting connection from `%s': %p\n"),
{
struct GNUNET_CONNECTION_Handle *sock = cls;
GNUNET_CONNECTION_TransmitReadyNotify notify;
+ struct AddressProbe *pos;
+ sock->destroy_task = GNUNET_SCHEDULER_NO_TASK;
GNUNET_assert (sock->dns_active == NULL);
if (0 != (sock->ccs & COCO_TRANSMIT_READY))
{
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Destroy waits for write_task to be done (%p)\n", sock);
#endif
- GNUNET_SCHEDULER_add_after (sock->sched,
- sock->write_task,
- &destroy_continuation, sock);
+ GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == sock->destroy_task);
+ sock->destroy_task
+ = GNUNET_SCHEDULER_add_after (sock->write_task,
+ &destroy_continuation, sock);
return;
}
if (0 != (sock->ccs & COCO_RECEIVE_AGAIN))
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Shutting down socket (%p)\n", sock);
#endif
- GNUNET_NETWORK_socket_shutdown (sock->sock, SHUT_RDWR);
+ if (sock->persist != GNUNET_YES)
+ {
+ if ( (GNUNET_YES != GNUNET_NETWORK_socket_shutdown (sock->sock, SHUT_RDWR)) &&
+ (errno != ENOTCONN) &&
+ (errno != ECONNRESET) )
+ GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "shutdown");
+ }
}
if (sock->read_task != GNUNET_SCHEDULER_NO_TASK)
{
- GNUNET_SCHEDULER_add_after (sock->sched,
- sock->read_task,
- &destroy_continuation, sock);
+ GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == sock->destroy_task);
+ sock->destroy_task
+ = GNUNET_SCHEDULER_add_after (sock->read_task,
+ &destroy_continuation, sock);
return;
}
#if DEBUG_CONNECTION
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Destroy actually runs (%p)!\n", sock);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Destroy actually runs (%p)!\n", sock);
#endif
+ while (NULL != (pos = sock->ap_head))
+ {
+ GNUNET_break (GNUNET_OK == GNUNET_NETWORK_socket_close (pos->sock));
+ GNUNET_SCHEDULER_cancel (pos->task);
+ GNUNET_CONTAINER_DLL_remove (sock->ap_head, sock->ap_tail, pos);
+ GNUNET_free (pos);
+ }
GNUNET_assert (sock->nth.timeout_task == GNUNET_SCHEDULER_NO_TASK);
GNUNET_assert (sock->ccs == COCO_NONE);
if (NULL != (notify = sock->nth.notify_ready))
sock->nth.notify_ready = NULL;
notify (sock->nth.notify_ready_cls, 0, NULL);
}
- if (sock->sock != NULL)
- GNUNET_break (GNUNET_OK == GNUNET_NETWORK_socket_close (sock->sock));
+
+ if (sock->sock != NULL)
+ {
+ if (sock->persist != GNUNET_YES)
+ GNUNET_break (GNUNET_OK == GNUNET_NETWORK_socket_close (sock->sock));
+ else
+ GNUNET_free (sock->sock); /* at least no memory leak (we deliberately
+ leak the socket in this special case) ... */
+ }
GNUNET_free_non_null (sock->addr);
GNUNET_free_non_null (sock->hostname);
+ GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == sock->destroy_task);
#if DEBUG_CONNECTION
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Freeing memory of connection %p.\n", sock);
#endif
+ GNUNET_free (sock->write_buffer);
GNUNET_free (sock);
}
connect_fail_continuation (struct GNUNET_CONNECTION_Handle *h)
{
#if DEBUG_CONNECTION
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Failed to establish TCP connection to `%s:%u', no further addresses to try (%p).\n",
- h->hostname, h->port, h);
+ GNUNET_log ((0 != strncmp (h->hostname,
+ "localhost:",
+ 10))
+ ? GNUNET_ERROR_TYPE_INFO
+ : GNUNET_ERROR_TYPE_WARNING,
+ _("Failed to establish TCP connection to `%s:%u', no further addresses to try.\n"),
+ h->hostname, h->port);
#endif
/* connect failed / timed out */
GNUNET_break (h->ap_head == NULL);
GNUNET_break (h->dns_active == GNUNET_NO);
GNUNET_break (h->sock == NULL);
- /* FIXME: trigger delayed reconnect attempt... */
/* trigger jobs that used to wait on "connect_task" */
if (0 != (h->ccs & COCO_RECEIVE_AGAIN))
{
#if DEBUG_CONNECTION
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "connect_timeout_continuation triggers receive_again (%p)\n",
+ "connect_fail_continuation triggers receive_again (%p)\n",
h);
#endif
h->ccs -= COCO_RECEIVE_AGAIN;
- h->read_task = GNUNET_SCHEDULER_add_after (h->sched,
- GNUNET_SCHEDULER_NO_TASK,
- &receive_again, h);
+ h->read_task = GNUNET_SCHEDULER_add_now (&receive_again, h);
}
if (0 != (h->ccs & COCO_TRANSMIT_READY))
{
#if DEBUG_CONNECTION
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "connect_timeout_continuation cancels timeout_task, triggers transmit_ready (%p)\n",
+ "connect_fail_continuation cancels timeout_task, triggers transmit_ready (%p)\n",
h);
#endif
GNUNET_assert (h->nth.timeout_task != GNUNET_SCHEDULER_NO_TASK);
- GNUNET_SCHEDULER_cancel (h->sched, h->nth.timeout_task);
+ GNUNET_SCHEDULER_cancel (h->nth.timeout_task);
h->nth.timeout_task = GNUNET_SCHEDULER_NO_TASK;
h->ccs -= COCO_TRANSMIT_READY;
- h->write_task = GNUNET_SCHEDULER_add_after (h->sched,
- GNUNET_SCHEDULER_NO_TASK,
- &transmit_ready, h);
+ GNUNET_assert (h->nth.notify_ready != NULL);
+ GNUNET_assert (h->write_task == GNUNET_SCHEDULER_NO_TASK);
+ h->write_task = GNUNET_SCHEDULER_add_now (&transmit_ready, h);
}
if (0 != (h->ccs & COCO_DESTROY_CONTINUATION))
{
#if DEBUG_CONNECTION
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "connect_timeout_continuation runs destroy_continuation (%p)\n",
+ "connect_fail_continuation runs destroy_continuation (%p)\n",
h);
#endif
h->ccs -= COCO_DESTROY_CONTINUATION;
- GNUNET_SCHEDULER_add_continuation (h->sched,
- &destroy_continuation,
- h, GNUNET_SCHEDULER_REASON_TIMEOUT);
+ GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == h->destroy_task);
+ h->destroy_task
+ = GNUNET_SCHEDULER_add_now (&destroy_continuation,
+ h);
}
}
h);
#endif
h->ccs -= COCO_RECEIVE_AGAIN;
- h->read_task = GNUNET_SCHEDULER_add_after (h->sched,
- GNUNET_SCHEDULER_NO_TASK,
- &receive_again, h);
+ h->read_task = GNUNET_SCHEDULER_add_now (&receive_again, h);
}
if (0 != (h->ccs & COCO_TRANSMIT_READY))
{
h);
#endif
GNUNET_assert (h->nth.timeout_task != GNUNET_SCHEDULER_NO_TASK);
- GNUNET_SCHEDULER_cancel (h->sched, h->nth.timeout_task);
+ GNUNET_SCHEDULER_cancel (h->nth.timeout_task);
h->nth.timeout_task = GNUNET_SCHEDULER_NO_TASK;
h->ccs -= COCO_TRANSMIT_READY;
+ GNUNET_assert (h->write_task == GNUNET_SCHEDULER_NO_TASK);
+ GNUNET_assert (h->nth.notify_ready != NULL);
h->write_task =
- GNUNET_SCHEDULER_add_write_net (h->sched,
- GNUNET_TIME_absolute_get_remaining
+ GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_absolute_get_remaining
(h->nth.transmit_timeout), h->sock,
&transmit_ready, h);
}
h);
#endif
h->ccs -= COCO_DESTROY_CONTINUATION;
- GNUNET_SCHEDULER_add_continuation (h->sched,
- &destroy_continuation,
- h,
- GNUNET_SCHEDULER_REASON_PREREQ_DONE);
+ GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == h->destroy_task);
+ h->destroy_task
+ = GNUNET_SCHEDULER_add_now (&destroy_continuation,
+ h);
}
}
struct GNUNET_CONNECTION_Handle *h = ap->h;
struct AddressProbe *pos;
int error;
- unsigned int len;
+ socklen_t len;
+ GNUNET_assert (ap->sock != NULL);
GNUNET_CONTAINER_DLL_remove (h->ap_head, h->ap_tail, ap);
len = sizeof (error);
errno = 0;
error = 0;
- if ((0 == (tc->reason & GNUNET_SCHEDULER_REASON_WRITE_READY)) ||
- (GNUNET_OK !=
- GNUNET_NETWORK_socket_getsockopt (ap->sock, SOL_SOCKET, SO_ERROR,
- &error, &len)) || (error != 0)
- || (errno != 0))
+ if ( (0 == (tc->reason & GNUNET_SCHEDULER_REASON_WRITE_READY)) ||
+ (GNUNET_OK !=
+ GNUNET_NETWORK_socket_getsockopt (ap->sock, SOL_SOCKET, SO_ERROR,
+ &error, &len)) ||
+ (error != 0) )
{
GNUNET_break (GNUNET_OK == GNUNET_NETWORK_socket_close (ap->sock));
GNUNET_free (ap);
connect_fail_continuation (h);
return;
}
+ GNUNET_assert (h->sock == NULL);
h->sock = ap->sock;
GNUNET_assert (h->addr == NULL);
h->addr = GNUNET_malloc (ap->addrlen);
while (NULL != (pos = h->ap_head))
{
GNUNET_break (GNUNET_OK == GNUNET_NETWORK_socket_close (pos->sock));
- GNUNET_SCHEDULER_cancel (h->sched, pos->task);
+ GNUNET_SCHEDULER_cancel (pos->task);
GNUNET_CONTAINER_DLL_remove (h->ap_head, h->ap_tail, pos);
GNUNET_free (pos);
}
}
if (h->sock != NULL)
return; /* already connected */
+ GNUNET_assert (h->addr == NULL);
/* try to connect */
#if DEBUG_CONNECTION
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
GNUNET_TIME_absolute_get_remaining
(h->receive_timeout));
ap->task =
- GNUNET_SCHEDULER_add_write_net (h->sched, delay, ap->sock,
+ GNUNET_SCHEDULER_add_write_net (delay, ap->sock,
&connect_probe_continuation, ap);
}
* This function returns immediately, even if the connection has not
* yet been established. This function only creates TCP connections.
*
- * @param sched scheduler to use
* @param cfg configuration to use
* @param hostname name of the host to connect to
* @param port port to connect to
- * @param maxbuf maximum write buffer size for the socket (use
- * 0 for sockets that need no write buffers, such as listen sockets)
* @return the socket handle
*/
struct GNUNET_CONNECTION_Handle *
-GNUNET_CONNECTION_create_from_connect (struct GNUNET_SCHEDULER_Handle *sched,
- const struct
+GNUNET_CONNECTION_create_from_connect (const struct
GNUNET_CONFIGURATION_Handle *cfg,
- const char *hostname, uint16_t port,
- size_t maxbuf)
+ const char *hostname, uint16_t port)
{
struct GNUNET_CONNECTION_Handle *ret;
GNUNET_assert (0 < strlen (hostname)); /* sanity check */
- ret = GNUNET_malloc (sizeof (struct GNUNET_CONNECTION_Handle) + maxbuf);
+ ret = GNUNET_malloc (sizeof (struct GNUNET_CONNECTION_Handle));
ret->cfg = cfg;
- ret->sched = sched;
- ret->write_buffer = (char *) &ret[1];
- ret->write_buffer_size = maxbuf;
+ ret->write_buffer_size = GNUNET_SERVER_MIN_BUFFER_SIZE;
+ ret->write_buffer = GNUNET_malloc(ret->write_buffer_size);
ret->port = port;
ret->hostname = GNUNET_strdup (hostname);
- ret->dns_active = GNUNET_RESOLVER_ip_get (sched,
- cfg,
- ret->hostname,
- AF_UNSPEC,
- GNUNET_CONNECTION_CONNECT_RETRY_TIMEOUT,
- &try_connect_using_address,
- ret);
+ ret->dns_active = GNUNET_RESOLVER_ip_get (ret->hostname,
+ AF_UNSPEC,
+ GNUNET_CONNECTION_CONNECT_RETRY_TIMEOUT,
+ &try_connect_using_address, ret);
return ret;
}
+/**
+ * Create a socket handle by connecting to a UNIX domain service.
+ * This function returns immediately, even if the connection has not
+ * yet been established. This function only creates UNIX connections.
+ *
+ * @param cfg configuration to use
+ * @param unixpath path to connect to
+ * @return the socket handle, NULL on systems without UNIX support
+ */
+struct GNUNET_CONNECTION_Handle *
+GNUNET_CONNECTION_create_from_connect_to_unixpath (const struct
+ GNUNET_CONFIGURATION_Handle *cfg,
+ const char *unixpath)
+{
+#ifdef AF_UNIX
+ struct GNUNET_CONNECTION_Handle *ret;
+ struct sockaddr_un *un;
+ size_t slen;
+
+ GNUNET_assert (0 < strlen (unixpath)); /* sanity check */
+ un = GNUNET_malloc (sizeof (struct sockaddr_un));
+ un->sun_family = AF_UNIX;
+ slen = strlen (unixpath);
+ if (slen >= sizeof (un->sun_path))
+ slen = sizeof (un->sun_path) - 1;
+ memcpy (un->sun_path,
+ unixpath,
+ slen);
+ un->sun_path[slen] = '\0';
+ slen = sizeof (struct sockaddr_un);
+#if HAVE_SOCKADDR_IN_SIN_LEN
+ un->sun_len = (u_char) slen;
+#endif
+#if LINUX
+ un->sun_path[0] = '\0';
+#endif
+ ret = GNUNET_malloc (sizeof (struct GNUNET_CONNECTION_Handle));
+ ret->cfg = cfg;
+ ret->write_buffer_size = GNUNET_SERVER_MIN_BUFFER_SIZE;
+ ret->write_buffer = GNUNET_malloc(ret->write_buffer_size);
+ ret->port = 0;
+ ret->hostname = NULL;
+ ret->addr = (struct sockaddr*) un;
+ ret->addrlen = slen;
+ ret->sock = GNUNET_NETWORK_socket_create (AF_UNIX, SOCK_STREAM, 0);
+ if (NULL == ret->sock)
+ {
+ GNUNET_free (ret->addr);
+ GNUNET_free (ret->write_buffer);
+ GNUNET_free (ret);
+ return NULL;
+ }
+ if (GNUNET_OK != GNUNET_NETWORK_socket_connect (ret->sock,
+ ret->addr,
+ ret->addrlen))
+ {
+ /* Just return; we expect everything to work eventually so don't fail HARD */
+ GNUNET_break (GNUNET_OK == GNUNET_NETWORK_socket_close (ret->sock));
+ ret->sock = NULL;
+ return ret;
+ }
+ connect_success_continuation (ret);
+ return ret;
+#else
+ return NULL;
+#endif
+}
+
+
/**
* Create a socket handle by (asynchronously) connecting to a host.
* This function returns immediately, even if the connection has not
* yet been established. This function only creates TCP connections.
*
- * @param sched scheduler to use
* @param af_family address family to use
* @param serv_addr server address
* @param addrlen length of server address
- * @param maxbuf maximum write buffer size for the socket (use
- * 0 for sockets that need no write buffers, such as listen sockets)
* @return the socket handle
*/
struct GNUNET_CONNECTION_Handle *
-GNUNET_CONNECTION_create_from_sockaddr (struct GNUNET_SCHEDULER_Handle
- *sched, int af_family,
+GNUNET_CONNECTION_create_from_sockaddr (int af_family,
const struct sockaddr *serv_addr,
- socklen_t addrlen, size_t maxbuf)
+ socklen_t addrlen)
{
struct GNUNET_NETWORK_Handle *s;
struct GNUNET_CONNECTION_Handle *ret;
+
s = GNUNET_NETWORK_socket_create (af_family, SOCK_STREAM, 0);
if (s == NULL)
{
{
/* maybe refused / unsupported address, try next */
GNUNET_log_strerror (GNUNET_ERROR_TYPE_INFO, "connect");
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ _("Attempt to connect to `%s' failed\n"),
+ GNUNET_a2s (serv_addr, addrlen));
GNUNET_break (GNUNET_OK == GNUNET_NETWORK_socket_close (s));
return NULL;
}
- ret = GNUNET_CONNECTION_create_from_existing (sched, s, maxbuf);
+ ret = GNUNET_CONNECTION_create_from_existing (s);
ret->addr = GNUNET_malloc (addrlen);
memcpy (ret->addr, serv_addr, addrlen);
ret->addrlen = addrlen;
/**
* Close the socket and free associated resources. Pending
- * transmissions are simply dropped. A pending receive call will be
- * called with an error code of "EPIPE".
+ * transmissions may be completed or dropped depending on the
+ * arguments. If a receive call is pending and should
+ * NOT be completed, 'GNUNET_CONNECTION_receive_cancel'
+ * should be called explicitly first.
*
* @param sock socket to destroy
+ * @param finish_pending_write should pending writes be completed or aborted?
+ * (this applies to transmissions where the data has already been
+ * read from the application; all other transmissions should be
+ * aborted using 'GNUNET_CONNECTION_notify_transmit_ready_cancel').
*/
void
-GNUNET_CONNECTION_destroy (struct GNUNET_CONNECTION_Handle *sock)
+GNUNET_CONNECTION_destroy (struct GNUNET_CONNECTION_Handle *sock,
+ int finish_pending_write)
{
+ if (GNUNET_NO == finish_pending_write)
+ {
+ if (sock->write_task != GNUNET_SCHEDULER_NO_TASK)
+ {
+ GNUNET_SCHEDULER_cancel (sock->write_task);
+ sock->write_task = GNUNET_SCHEDULER_NO_TASK;
+ sock->write_buffer_off = 0;
+ }
+ sock->nth.notify_ready = NULL;
+ }
if ((sock->write_buffer_off == 0) && (sock->dns_active != NULL))
{
GNUNET_RESOLVER_request_cancel (sock->dns_active);
sock->dns_active = NULL;
}
- GNUNET_assert (sock->sched != NULL);
- GNUNET_SCHEDULER_add_after (sock->sched,
- GNUNET_SCHEDULER_NO_TASK,
- &destroy_continuation, sock);
+
+ GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == sock->destroy_task);
+ sock->destroy_task
+ = GNUNET_SCHEDULER_add_now (&destroy_continuation, sock);
}
GNUNET_CONNECTION_Receiver receiver;
sh->read_task = GNUNET_SCHEDULER_NO_TASK;
+ if ( (GNUNET_YES == sh->ignore_shutdown) &&
+ (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN)))
+ {
+ /* ignore shutdown request, go again immediately */
+#if DEBUG_CONNECTION
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Ignoring shutdown signal per configuration\n");
+#endif
+ sh->read_task = GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_absolute_get_remaining
+ (sh->receive_timeout),
+ sh->sock,
+ &receive_ready, sh);
+ return;
+ }
now = GNUNET_TIME_absolute_get ();
- if ((now.value > sh->receive_timeout.value) ||
+ if ((now.abs_value > sh->receive_timeout.abs_value) ||
(0 != (tc->reason & GNUNET_SCHEDULER_REASON_TIMEOUT)) ||
(0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN)))
{
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Receive from `%s' encounters error: time out by %llums... (%p)\n",
GNUNET_a2s (sh->addr, sh->addrlen),
- GNUNET_TIME_absolute_get_duration (sh->
- receive_timeout).value,
- sh);
+ GNUNET_TIME_absolute_get_duration (sh->receive_timeout).
+ rel_value, sh);
#endif
signal_timeout (sh);
return;
return;
}
now = GNUNET_TIME_absolute_get ();
- if ((now.value > sh->receive_timeout.value) ||
+ if ((now.abs_value > sh->receive_timeout.abs_value) ||
(0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN)))
{
#if DEBUG_CONNECTION
}
GNUNET_assert (sh->sock != NULL);
/* connect succeeded, wait for data! */
- sh->read_task = GNUNET_SCHEDULER_add_read_net (tc->sched,
- GNUNET_TIME_absolute_get_remaining
+ sh->read_task = GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_absolute_get_remaining
(sh->receive_timeout),
sh->sock,
&receive_ready, sh);
if (sock->sock != NULL)
{
memset (&tc, 0, sizeof (tc));
- tc.sched = sock->sched;
tc.reason = GNUNET_SCHEDULER_REASON_PREREQ_DONE;
receive_again (sock, &tc);
return;
}
+/**
+ * Configure this connection to ignore shutdown signals.
+ *
+ * @param sock socket handle
+ * @param do_ignore GNUNET_YES to ignore, GNUNET_NO to restore default
+ */
+void
+GNUNET_CONNECTION_ignore_shutdown (struct GNUNET_CONNECTION_Handle *sock,
+ int do_ignore)
+{
+ sock->ignore_shutdown = do_ignore;
+}
+
+
/**
* Cancel receive job on the given socket. Note that the
* receiver callback must not have been called yet in order
{
if (sock->read_task != GNUNET_SCHEDULER_NO_TASK)
{
- GNUNET_assert (sock == GNUNET_SCHEDULER_cancel (sock->sched,
- sock->read_task));
+ GNUNET_assert (sock == GNUNET_SCHEDULER_cancel (sock->read_task));
sock->read_task = GNUNET_SCHEDULER_NO_TASK;
}
else
used = sock->write_buffer_off - sock->write_buffer_pos;
avail = sock->write_buffer_size - used;
size = sock->nth.notify_size;
- if (sock->nth.notify_size > avail)
+ if (size > avail)
return GNUNET_NO;
sock->nth.notify_ready = NULL;
if (sock->write_buffer_size - sock->write_buffer_off < size)
sock->write_buffer_off -= sock->write_buffer_pos;
sock->write_buffer_pos = 0;
}
- GNUNET_assert (sock->write_buffer_size - sock->write_buffer_off >= size);
+ avail = sock->write_buffer_size - sock->write_buffer_off;
+ GNUNET_assert (avail >= size);
size = notify (sock->nth.notify_ready_cls,
- sock->write_buffer_size - sock->write_buffer_off,
+ avail,
&sock->write_buffer[sock->write_buffer_off]);
+ GNUNET_assert (size <= avail);
sock->write_buffer_off += size;
return GNUNET_YES;
}
* expired).
*
* This task notifies the client about the timeout.
+ *
+ * @param cls the 'struct GNUNET_CONNECTION_Handle'
+ * @param tc scheduler context
*/
static void
-transmit_timeout (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+transmit_timeout (void *cls,
+ const struct GNUNET_SCHEDULER_TaskContext *tc)
{
struct GNUNET_CONNECTION_Handle *sock = cls;
GNUNET_CONNECTION_TransmitReadyNotify notify;
* at the time of being asked to transmit.
*
* This task notifies the client about the error.
+ *
+ * @param cls the 'struct GNUNET_CONNECTION_Handle'
+ * @param tc scheduler context
*/
static void
-connect_error (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+connect_error (void *cls,
+ const struct GNUNET_SCHEDULER_TaskContext *tc)
{
struct GNUNET_CONNECTION_Handle *sock = cls;
GNUNET_CONNECTION_TransmitReadyNotify notify;
#if DEBUG_CONNECTION
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Transmission request of size %u fails, connection failed (%p).\n",
- sock->nth.notify_size, sock);
+ "Transmission request of size %u fails (%s/%u), connection failed (%p).\n",
+ sock->nth.notify_size,
+ sock->hostname,
+ sock->port,
+ sock);
#endif
sock->write_task = GNUNET_SCHEDULER_NO_TASK;
notify = sock->nth.notify_ready;
}
+/**
+ * FIXME
+ *
+ * @param sock FIXME
+ */
static void
transmit_error (struct GNUNET_CONNECTION_Handle *sock)
{
GNUNET_CONNECTION_TransmitReadyNotify notify;
+ if (NULL != sock->sock)
+ {
+ GNUNET_NETWORK_socket_shutdown (sock->sock, SHUT_RDWR);
+ GNUNET_break (GNUNET_OK ==
+ GNUNET_NETWORK_socket_close (sock->sock));
+ sock->sock = NULL;
+ }
+ if (sock->read_task != GNUNET_SCHEDULER_NO_TASK)
+ {
+ GNUNET_SCHEDULER_cancel (sock->read_task);
+ sock->read_task = GNUNET_SCHEDULER_NO_TASK;
+ signal_timeout (sock);
+ return;
+ }
if (sock->nth.notify_ready == NULL)
return; /* nobody to tell about it */
notify = sock->nth.notify_ready;
GNUNET_assert (sock->write_task != GNUNET_SCHEDULER_NO_TASK);
sock->write_task = GNUNET_SCHEDULER_NO_TASK;
GNUNET_assert (sock->nth.timeout_task == GNUNET_SCHEDULER_NO_TASK);
+ if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
+ {
+ if (sock->ignore_shutdown == GNUNET_YES)
+ goto SCHEDULE_WRITE; /* ignore shutdown, go again immediately */
+#if DEBUG_CONNECTION
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Transmit to `%s' fails, shutdown happened (%p).\n",
+ GNUNET_a2s (sock->addr, sock->addrlen), sock);
+#endif
+ notify = sock->nth.notify_ready;
+ if (NULL != notify)
+ {
+ sock->nth.notify_ready = NULL;
+ notify (sock->nth.notify_ready_cls, 0, NULL);
+ }
+ return;
+ }
if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_TIMEOUT))
{
#if DEBUG_CONNECTION
GNUNET_a2s (sock->addr, sock->addrlen), sock);
#endif
notify = sock->nth.notify_ready;
+ GNUNET_assert (NULL != notify);
sock->nth.notify_ready = NULL;
notify (sock->nth.notify_ready_cls, 0, NULL);
return;
("Could not satisfy pending transmission request, socket closed or connect failed (%p).\n"),
sock);
#endif
- if (NULL != sock->sock)
- {
- GNUNET_NETWORK_socket_shutdown (sock->sock, SHUT_RDWR);
- GNUNET_break (GNUNET_OK ==
- GNUNET_NETWORK_socket_close (sock->sock));
- sock->sock = NULL;
- }
transmit_error (sock);
return; /* connect failed for good, we're finished */
}
GNUNET_assert (sock->write_buffer_off >= sock->write_buffer_pos);
+ if ( (sock->nth.notify_ready != NULL) &&
+ (sock->write_buffer_size < sock->nth.notify_size) )
+ {
+ sock->write_buffer = GNUNET_realloc(sock->write_buffer,
+ sock->nth.notify_size);
+ sock->write_buffer_size = sock->nth.notify_size;
+ }
process_notify (sock);
have = sock->write_buffer_off - sock->write_buffer_pos;
if (have == 0)
GNUNET_assert (sock->write_buffer_pos <= sock->write_buffer_size);
RETRY:
ret = GNUNET_NETWORK_socket_send (sock->sock,
- &sock->
- write_buffer[sock->write_buffer_pos],
+ &sock->write_buffer[sock->
+ write_buffer_pos],
have);
if (ret == -1)
{
if (errno == EINTR)
goto RETRY;
+#if 0
+ int en = errno;
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("Failed to send to `%s': %s\n"),
+ GNUNET_a2s (sock->addr,
+ sock->addrlen),
+ STRERROR (en));
+#endif
#if DEBUG_CONNECTION
GNUNET_log_strerror (GNUNET_ERROR_TYPE_DEBUG, "send");
#endif
- GNUNET_NETWORK_socket_shutdown (sock->sock, SHUT_RDWR);
- GNUNET_break (GNUNET_OK == GNUNET_NETWORK_socket_close (sock->sock));
- sock->sock = NULL;
transmit_error (sock);
return;
}
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Re-scheduling transmit_ready (more to do) (%p).\n", sock);
#endif
+ have = sock->write_buffer_off - sock->write_buffer_pos;
+ GNUNET_assert ( (sock->nth.notify_ready != NULL) || (have > 0) );
if (sock->write_task == GNUNET_SCHEDULER_NO_TASK)
sock->write_task =
- GNUNET_SCHEDULER_add_write_net (tc->sched,
- GNUNET_TIME_absolute_get_remaining
- (sock->nth.transmit_timeout),
- sock->sock, &transmit_ready, sock);
+ GNUNET_SCHEDULER_add_write_net ((sock->nth.notify_ready == NULL)
+ ? GNUNET_TIME_UNIT_FOREVER_REL
+ : GNUNET_TIME_absolute_get_remaining (sock->nth.transmit_timeout),
+ sock->sock,
+ &transmit_ready, sock);
}
notify, void *notify_cls)
{
if (sock->nth.notify_ready != NULL)
- return NULL;
+ {
+ GNUNET_assert (0);
+ return NULL;
+ }
GNUNET_assert (notify != NULL);
- GNUNET_assert (sock->write_buffer_size >= size);
+ GNUNET_assert (size < GNUNET_SERVER_MAX_MESSAGE_SIZE);
GNUNET_assert (sock->write_buffer_off <= sock->write_buffer_size);
GNUNET_assert (sock->write_buffer_pos <= sock->write_buffer_size);
GNUNET_assert (sock->write_buffer_pos <= sock->write_buffer_off);
if ((sock->sock == NULL) &&
(sock->ap_head == NULL) && (sock->dns_active == NULL))
{
- sock->write_task = GNUNET_SCHEDULER_add_delayed (sock->sched,
- GNUNET_TIME_UNIT_ZERO,
- &connect_error, sock);
+ if (sock->write_task != GNUNET_SCHEDULER_NO_TASK)
+ GNUNET_SCHEDULER_cancel (sock->write_task);
+ sock->write_task = GNUNET_SCHEDULER_add_now (&connect_error, sock);
return &sock->nth;
}
if (GNUNET_SCHEDULER_NO_TASK != sock->write_task)
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Scheduling transmit_ready (%p).\n", sock);
#endif
- sock->write_task = GNUNET_SCHEDULER_add_write_net (sock->sched,
- GNUNET_TIME_absolute_get_remaining
- (sock->
- nth.transmit_timeout),
+ sock->write_task = GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_absolute_get_remaining
+ (sock->nth.
+ transmit_timeout),
sock->sock,
&transmit_ready,
sock);
sock);
#endif
sock->ccs |= COCO_TRANSMIT_READY;
- sock->nth.timeout_task = GNUNET_SCHEDULER_add_delayed (sock->sched,
- timeout,
+ sock->nth.timeout_task = GNUNET_SCHEDULER_add_delayed (timeout,
&transmit_timeout,
sock);
}
/**
- * Cancel the specified transmission-ready
- * notification.
+ * Cancel the specified transmission-ready notification.
+ *
+ * @param th notification to cancel
*/
void
GNUNET_CONNECTION_notify_transmit_ready_cancel (struct
"notify_transmit_ready_cancel cancels timeout_task (%p)\n",
h);
#endif
- GNUNET_SCHEDULER_cancel (h->sh->sched, h->timeout_task);
+ GNUNET_SCHEDULER_cancel (h->timeout_task);
h->timeout_task = GNUNET_SCHEDULER_NO_TASK;
h->sh->ccs -= COCO_TRANSMIT_READY;
}
else
{
- GNUNET_SCHEDULER_cancel (h->sh->sched, h->sh->write_task);
- h->sh->write_task = GNUNET_SCHEDULER_NO_TASK;
+ if (h->sh->write_task != GNUNET_SCHEDULER_NO_TASK)
+ {
+ GNUNET_SCHEDULER_cancel (h->sh->write_task);
+ h->sh->write_task = GNUNET_SCHEDULER_NO_TASK;
+ }
}
h->notify_ready = NULL;
}
projects / oweals / gnunet.git / blobdiff