/*
This file is part of GNUnet.
- (C) 2009-2013 Christian Grothoff (and other contributing authors)
+ Copyright (C) 2009-2013 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.
*/
/**
/**
* Task called on timeout.
*/
- GNUNET_SCHEDULER_TaskIdentifier timeout_task;
+ struct GNUNET_SCHEDULER_Task * timeout_task;
/**
* At what number of bytes available in the
/**
* Task waiting for the connection to finish connecting.
*/
- GNUNET_SCHEDULER_TaskIdentifier task;
+ struct GNUNET_SCHEDULER_Task * task;
};
GNUNET_CONNECTION_Receiver receiver;
/**
- * Closure for receiver.
+ * Closure for @e receiver.
*/
void *receiver_cls;
char *write_buffer;
/**
- * Current size of our write buffer.
+ * Current size of our @e write_buffer.
*/
size_t write_buffer_size;
/**
- * Current write-offset in write buffer (where
+ * Current write-offset in @e write_buffer (where
* would we write next).
*/
size_t write_buffer_off;
/**
- * Current read-offset in write buffer (how many
+ * Current read-offset in @e write_buffer (how many
* bytes have already been sent).
*/
size_t write_buffer_pos;
/**
- * Length of addr.
+ * Length of @e addr.
*/
socklen_t addrlen;
/**
* Read task that we may need to wait for.
*/
- GNUNET_SCHEDULER_TaskIdentifier read_task;
+ struct GNUNET_SCHEDULER_Task *read_task;
/**
* Write task that we may need to wait for.
*/
- GNUNET_SCHEDULER_TaskIdentifier write_task;
+ struct GNUNET_SCHEDULER_Task *write_task;
/**
* Handle to a pending DNS lookup request.
int8_t persist;
/**
- * Usually 0. Set to 1 if this handle is in used and should
- * 'GNUNET_CONNECTION_destroy' be called right now, the action needs
+ * Usually 0. Set to 1 if this handle is in use, and should
+ * #GNUNET_CONNECTION_destroy() be called right now, the action needs
* to be deferred by setting it to -1.
*/
int8_t destroy_later;
+ /**
+ * Handle to subsequent connection after proxy handshake completes,
+ */
+ struct GNUNET_CONNECTION_Handle *proxy_handshake;
+
};
* reach the other side before the process is terminated.
*
* @param connection the connection to make flushing and blocking
- * @return GNUNET_OK on success
+ * @return #GNUNET_OK on success
*/
int
GNUNET_CONNECTION_disable_corking (struct GNUNET_CONNECTION_Handle *connection)
/**
* Create a connection handle by boxing an existing OS socket. The OS
* socket should henceforth be no longer used directly.
- * GNUNET_connection_destroy will close it.
+ * #GNUNET_connection_destroy() will close it.
*
* @param osSocket existing socket to box
* @return the boxed connection handle
* Create a connection handle by accepting on a listen socket. This
* function may block if the listen socket has no connection ready.
*
- * @param access function to use to check if access is allowed
- * @param access_cls closure for access
+ * @param access_cb function to use to check if access is allowed
+ * @param access_cb_cls closure for @a access_cb
* @param lsock listen socket
* @return the connection handle, NULL on error
*/
struct GNUNET_CONNECTION_Handle *
-GNUNET_CONNECTION_create_from_accept (GNUNET_CONNECTION_AccessCheck access,
- void *access_cls,
+GNUNET_CONNECTION_create_from_accept (GNUNET_CONNECTION_AccessCheck access_cb,
+ void *access_cb_cls,
struct GNUNET_NETWORK_Handle *lsock)
{
struct GNUNET_CONNECTION_Handle *connection;
GNUNET_NETWORK_socket_accept (lsock, (struct sockaddr *) &addr, &addrlen);
if (NULL == sock)
{
- LOG_STRERROR (GNUNET_ERROR_TYPE_WARNING, "accept");
+ if (EAGAIN != errno)
+ LOG_STRERROR (GNUNET_ERROR_TYPE_WARNING, "accept");
return NULL;
}
if ((addrlen > sizeof (addr)) || (addrlen < sizeof (sa_family_t)))
#endif
}
- if ((NULL != access) &&
- (GNUNET_YES != (aret = access (access_cls, gcp, uaddr, addrlen))))
+ if ((NULL != access_cb) &&
+ (GNUNET_YES != (aret = access_cb (access_cb_cls, gcp, uaddr, addrlen))))
{
if (GNUNET_NO == aret)
- LOG (GNUNET_ERROR_TYPE_INFO, _("Access denied to `%s'\n"),
- GNUNET_a2s (uaddr, addrlen));
+ LOG (GNUNET_ERROR_TYPE_INFO,
+ _("Access denied to `%s'\n"),
+ GNUNET_a2s (uaddr,
+ addrlen));
GNUNET_break (GNUNET_OK ==
- GNUNET_NETWORK_socket_shutdown (sock, SHUT_RDWR));
+ GNUNET_NETWORK_socket_shutdown (sock,
+ SHUT_RDWR));
GNUNET_break (GNUNET_OK == GNUNET_NETWORK_socket_close (sock));
GNUNET_free (uaddr);
return NULL;
*
* @param connection the client to get the address for
* @param addr where to store the address
- * @param addrlen where to store the length of the address
- * @return GNUNET_OK on success
+ * @param addrlen where to store the length of the @a addr
+ * @return #GNUNET_OK on success
*/
int
GNUNET_CONNECTION_get_address (struct GNUNET_CONNECTION_Handle *connection,
- void **addr, size_t * addrlen)
+ void **addr,
+ size_t *addrlen)
{
if ((NULL == connection->addr) || (0 == connection->addrlen))
return GNUNET_NO;
* @param errcode error code to send
*/
static void
-signal_receive_error (struct GNUNET_CONNECTION_Handle *connection, int errcode)
+signal_receive_error (struct GNUNET_CONNECTION_Handle *connection,
+ int errcode)
{
GNUNET_CONNECTION_Receiver receiver;
connection);
GNUNET_assert (NULL != (receiver = connection->receiver));
connection->receiver = NULL;
- receiver (connection->receiver_cls, NULL, 0, connection->addr, connection->addrlen, errcode);
+ receiver (connection->receiver_cls,
+ NULL,
+ 0,
+ connection->addr,
+ connection->addrlen,
+ errcode);
}
{
GNUNET_CONNECTION_Receiver receiver;
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Connection signals timeout to receiver (%p)!\n",
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Connection signals timeout to receiver (%p)!\n",
connection);
GNUNET_assert (NULL != (receiver = connection->receiver));
connection->receiver = NULL;
connection);
if (NULL != connection->sock)
{
- GNUNET_NETWORK_socket_shutdown (connection->sock, SHUT_RDWR);
- GNUNET_break (GNUNET_OK == GNUNET_NETWORK_socket_close (connection->sock));
+ (void) GNUNET_NETWORK_socket_shutdown (connection->sock,
+ SHUT_RDWR);
+ GNUNET_break (GNUNET_OK ==
+ GNUNET_NETWORK_socket_close (connection->sock));
connection->sock = NULL;
- GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == connection->write_task);
+ GNUNET_assert (NULL == connection->write_task);
}
- if (GNUNET_SCHEDULER_NO_TASK != connection->read_task)
+ if (NULL != connection->read_task)
{
/* send errors trigger read errors... */
GNUNET_SCHEDULER_cancel (connection->read_task);
- connection->read_task = GNUNET_SCHEDULER_NO_TASK;
+ connection->read_task = NULL;
signal_receive_timeout (connection);
return;
}
connect_fail_continuation (struct GNUNET_CONNECTION_Handle *connection)
{
LOG (GNUNET_ERROR_TYPE_INFO,
- _("Failed to establish TCP connection to `%s:%u', no further addresses to try.\n"),
- connection->hostname, connection->port);
+ "Failed to establish TCP connection to `%s:%u', no further addresses to try.\n",
+ connection->hostname,
+ connection->port);
GNUNET_break (NULL == connection->ap_head);
GNUNET_break (NULL == connection->ap_tail);
GNUNET_break (GNUNET_NO == connection->dns_active);
GNUNET_break (NULL == connection->sock);
- GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == connection->write_task);
+ GNUNET_assert (NULL == connection->write_task);
+ GNUNET_assert (NULL == connection->proxy_handshake);
/* signal errors for jobs that used to wait on the connection */
connection->destroy_later = 1;
if (NULL != connection->receiver)
- signal_receive_error (connection, ECONNREFUSED);
+ signal_receive_error (connection,
+ ECONNREFUSED);
if (NULL != connection->nth.notify_ready)
{
- GNUNET_assert (connection->nth.timeout_task != GNUNET_SCHEDULER_NO_TASK);
+ GNUNET_assert (NULL != connection->nth.timeout_task);
GNUNET_SCHEDULER_cancel (connection->nth.timeout_task);
- connection->nth.timeout_task = GNUNET_SCHEDULER_NO_TASK;
- signal_transmit_error (connection, ECONNREFUSED);
+ connection->nth.timeout_task = NULL;
+ signal_transmit_error (connection,
+ ECONNREFUSED);
}
if (-1 == connection->destroy_later)
{
{
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Connection to `%s' succeeded! (%p)\n",
- GNUNET_a2s (connection->addr, connection->addrlen), connection);
+ GNUNET_a2s (connection->addr, connection->addrlen),
+ connection);
/* trigger jobs that waited for the connection */
if (NULL != connection->receiver)
{
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Connection succeeded, starting with receiving data (%p)\n",
connection);
- GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == connection->read_task);
+ GNUNET_assert (NULL == connection->read_task);
connection->read_task =
GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_absolute_get_remaining
(connection->receive_timeout), connection->sock,
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Connection succeeded, starting with sending data (%p)\n",
connection);
- GNUNET_assert (connection->nth.timeout_task != GNUNET_SCHEDULER_NO_TASK);
+ GNUNET_assert (connection->nth.timeout_task != NULL);
GNUNET_SCHEDULER_cancel (connection->nth.timeout_task);
- connection->nth.timeout_task = GNUNET_SCHEDULER_NO_TASK;
- GNUNET_assert (connection->write_task == GNUNET_SCHEDULER_NO_TASK);
+ connection->nth.timeout_task = NULL;
+ GNUNET_assert (connection->write_task == NULL);
connection->write_task =
GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_absolute_get_remaining
(connection->nth.transmit_timeout), connection->sock,
{
GNUNET_break (GNUNET_OK == GNUNET_NETWORK_socket_close (ap->sock));
GNUNET_free (ap);
- if ((NULL == connection->ap_head) && (GNUNET_NO == connection->dns_active))
+ if ((NULL == connection->ap_head) &&
+ (GNUNET_NO == connection->dns_active) &&
+ (NULL == connection->proxy_handshake))
connect_fail_continuation (connection);
return;
}
* Try to establish a connection given the specified address.
* This function is called by the resolver once we have a DNS reply.
*
- * @param cls our "struct GNUNET_CONNECTION_Handle *"
+ * @param cls our `struct GNUNET_CONNECTION_Handle *`
* @param addr address to try, NULL for "last call"
- * @param addrlen length of addr
+ * @param addrlen length of @a addr
*/
static void
-try_connect_using_address (void *cls, const struct sockaddr *addr,
+try_connect_using_address (void *cls,
+ const struct sockaddr *addr,
socklen_t addrlen)
{
struct GNUNET_CONNECTION_Handle *connection = cls;
if (NULL == addr)
{
connection->dns_active = NULL;
- if ((NULL == connection->ap_head) && (NULL == connection->sock))
+ if ((NULL == connection->ap_head) &&
+ (NULL == connection->sock) &&
+ (NULL == connection->proxy_handshake))
connect_fail_continuation (connection);
return;
}
GNUNET_assert (NULL == connection->addr);
/* try to connect */
LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Trying to connect using address `%s:%u/%s:%u'\n", connection->hostname, connection->port,
- GNUNET_a2s (addr, addrlen), connection->port);
+ "Trying to connect using address `%s:%u/%s:%u'\n",
+ connection->hostname,
+ connection->port,
+ GNUNET_a2s (addr, addrlen),
+ connection->port);
ap = GNUNET_malloc (sizeof (struct AddressProbe) + addrlen);
ap->addr = (const struct sockaddr *) &ap[1];
memcpy (&ap[1], addr, addrlen);
GNUNET_free (ap);
return; /* not supported by OS */
}
- LOG (GNUNET_ERROR_TYPE_INFO, _("Trying to connect to `%s' (%p)\n"),
- GNUNET_a2s (ap->addr, ap->addrlen), connection);
+ LOG (GNUNET_ERROR_TYPE_INFO,
+ "Trying to connect to `%s' (%p)\n",
+ GNUNET_a2s (ap->addr, ap->addrlen),
+ connection);
if ((GNUNET_OK !=
GNUNET_NETWORK_socket_connect (ap->sock, ap->addr, ap->addrlen)) &&
(EINPROGRESS != errno))
if (NULL != connection->nth.notify_ready)
delay =
GNUNET_TIME_relative_min (delay,
- GNUNET_TIME_absolute_get_remaining (connection->
- nth.transmit_timeout));
+ GNUNET_TIME_absolute_get_remaining (connection->nth.transmit_timeout));
if (NULL != connection->receiver)
delay =
GNUNET_TIME_relative_min (delay,
* @return the connection handle
*/
struct GNUNET_CONNECTION_Handle *
-GNUNET_CONNECTION_create_from_connect (const struct GNUNET_CONFIGURATION_Handle
- *cfg, const char *hostname,
+GNUNET_CONNECTION_create_from_connect (const struct GNUNET_CONFIGURATION_Handle *cfg,
+ const char *hostname,
uint16_t port)
{
struct GNUNET_CONNECTION_Handle *connection;
* @return the connection 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)
+GNUNET_CONNECTION_create_from_connect_to_unixpath (const struct GNUNET_CONFIGURATION_Handle *cfg,
+ const char *unixpath)
{
#ifdef AF_UNIX
struct GNUNET_CONNECTION_Handle *connection;
struct sockaddr_un *un;
- size_t slen;
GNUNET_assert (0 < strlen (unixpath)); /* sanity check */
un = GNUNET_new (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;
+ strncpy (un->sun_path, unixpath, sizeof (un->sun_path) - 1);
+#ifdef LINUX
+ {
+ int abstract;
+
+ abstract = GNUNET_CONFIGURATION_get_value_yesno (cfg, "TESTING",
+ "USE_ABSTRACT_SOCKETS");
+ if (GNUNET_YES == abstract)
+ un->sun_path[0] = '\0';
+ }
#endif
-#if LINUX
- un->sun_path[0] = '\0';
+#if HAVE_SOCKADDR_IN_SIN_LEN
+ un->sun_len = (u_char) sizeof (struct sockaddr_un);
#endif
connection = GNUNET_new (struct GNUNET_CONNECTION_Handle);
connection->cfg = cfg;
connection->port = 0;
connection->hostname = NULL;
connection->addr = (struct sockaddr *) un;
- connection->addrlen = slen;
+ connection->addrlen = sizeof (struct sockaddr_un);
connection->sock = GNUNET_NETWORK_socket_create (AF_UNIX, SOCK_STREAM, 0);
if (NULL == connection->sock)
{
* This function returns immediately, even if the connection has not
* yet been established. This function only creates TCP connections.
*
- * @param af_family address family to use
+ * @param s socket to connect
* @param serv_addr server address
- * @param addrlen length of server address
+ * @param addrlen length of @a serv_addr
* @return the connection handle
*/
struct GNUNET_CONNECTION_Handle *
-GNUNET_CONNECTION_create_from_sockaddr (int af_family,
- const struct sockaddr *serv_addr,
- socklen_t addrlen)
+GNUNET_CONNECTION_connect_socket (struct GNUNET_NETWORK_Handle *s,
+ const struct sockaddr *serv_addr,
+ socklen_t addrlen)
{
- struct GNUNET_NETWORK_Handle *s;
struct GNUNET_CONNECTION_Handle *connection;
- s = GNUNET_NETWORK_socket_create (af_family, SOCK_STREAM, 0);
- if (NULL == s)
- {
- LOG_STRERROR (GNUNET_ERROR_TYPE_WARNING | GNUNET_ERROR_TYPE_BULK, "socket");
- return NULL;
- }
- if ((GNUNET_OK != GNUNET_NETWORK_socket_connect (s, serv_addr, addrlen)) &&
- (EINPROGRESS != errno))
+ if ( (GNUNET_OK !=
+ GNUNET_NETWORK_socket_connect (s, serv_addr, addrlen)) &&
+ (EINPROGRESS != errno) )
{
/* maybe refused / unsupported address, try next */
- LOG_STRERROR (GNUNET_ERROR_TYPE_INFO, "connect");
- LOG (GNUNET_ERROR_TYPE_INFO, _("Attempt to connect to `%s' failed\n"),
- GNUNET_a2s (serv_addr, addrlen));
+ LOG_STRERROR (GNUNET_ERROR_TYPE_DEBUG,
+ "connect");
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Attempt to connect to `%s' failed\n",
+ GNUNET_a2s (serv_addr,
+ addrlen));
GNUNET_break (GNUNET_OK == GNUNET_NETWORK_socket_close (s));
return NULL;
}
connection->addr = GNUNET_malloc (addrlen);
memcpy (connection->addr, serv_addr, addrlen);
connection->addrlen = addrlen;
- LOG (GNUNET_ERROR_TYPE_INFO, _("Trying to connect to `%s' (%p)\n"),
- GNUNET_a2s (serv_addr, addrlen), connection);
+ LOG (GNUNET_ERROR_TYPE_INFO,
+ "Trying to connect to `%s' (%p)\n",
+ GNUNET_a2s (serv_addr, addrlen),
+ connection);
return connection;
}
+/**
+ * Create a connection handle by creating a socket and
+ * (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 af_family address family to use
+ * @param serv_addr server address
+ * @param addrlen length of @a serv_addr
+ * @return the connection handle
+ */
+struct GNUNET_CONNECTION_Handle *
+GNUNET_CONNECTION_create_from_sockaddr (int af_family,
+ const struct sockaddr *serv_addr,
+ socklen_t addrlen)
+{
+ struct GNUNET_NETWORK_Handle *s;
+
+ s = GNUNET_NETWORK_socket_create (af_family, SOCK_STREAM, 0);
+ if (NULL == s)
+ {
+ LOG_STRERROR (GNUNET_ERROR_TYPE_WARNING | GNUNET_ERROR_TYPE_BULK, "socket");
+ return NULL;
+ }
+ return GNUNET_CONNECTION_connect_socket (s, serv_addr, addrlen);
+}
+
+
/**
* Check if connection is valid (no fatal errors have happened so far).
* Note that a connection that is still trying to connect is considered
* valid.
*
* @param connection connection to check
- * @return GNUNET_YES if valid, GNUNET_NO otherwise
+ * @return #GNUNET_YES if valid, #GNUNET_NO otherwise
*/
int
GNUNET_CONNECTION_check (struct GNUNET_CONNECTION_Handle *connection)
{
- if ((NULL != connection->ap_head) || (NULL != connection->dns_active))
+ if ((NULL != connection->ap_head) ||
+ (NULL != connection->dns_active) ||
+ (NULL != connection->proxy_handshake))
return GNUNET_YES; /* still trying to connect */
- return (NULL == connection->sock) ? GNUNET_NO : GNUNET_YES;
+ if ( (0 != connection->destroy_later) ||
+ (NULL == connection->sock) )
+ return GNUNET_NO;
+ return GNUNET_YES;
}
connection->destroy_later = -1;
return;
}
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Shutting down connection (%p)\n", connection);
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Shutting down connection (%p)\n",
+ connection);
GNUNET_assert (NULL == connection->nth.notify_ready);
GNUNET_assert (NULL == connection->receiver);
- if (GNUNET_SCHEDULER_NO_TASK != connection->write_task)
+ if (NULL != connection->write_task)
{
GNUNET_SCHEDULER_cancel (connection->write_task);
- connection->write_task = GNUNET_SCHEDULER_NO_TASK;
+ connection->write_task = NULL;
connection->write_buffer_off = 0;
}
- if (GNUNET_SCHEDULER_NO_TASK != connection->read_task)
+ if (NULL != connection->read_task)
{
GNUNET_SCHEDULER_cancel (connection->read_task);
- connection->read_task = GNUNET_SCHEDULER_NO_TASK;
+ connection->read_task = NULL;
}
- if (GNUNET_SCHEDULER_NO_TASK != connection->nth.timeout_task)
+ if (NULL != connection->nth.timeout_task)
{
GNUNET_SCHEDULER_cancel (connection->nth.timeout_task);
- connection->nth.timeout_task = GNUNET_SCHEDULER_NO_TASK;
+ connection->nth.timeout_task = NULL;
}
connection->nth.notify_ready = NULL;
if (NULL != connection->dns_active)
GNUNET_RESOLVER_request_cancel (connection->dns_active);
connection->dns_active = NULL;
}
+ if (NULL != connection->proxy_handshake)
+ {
+ /* GNUNET_CONNECTION_destroy (connection->proxy_handshake); */
+ connection->proxy_handshake->destroy_later = -1;
+ connection->proxy_handshake = NULL; /* Not leaked ??? */
+ }
while (NULL != (pos = connection->ap_head))
{
GNUNET_break (GNUNET_OK == GNUNET_NETWORK_socket_close (pos->sock));
if ( (NULL != connection->sock) &&
(GNUNET_YES != connection->persist) )
{
- if ((GNUNET_YES != GNUNET_NETWORK_socket_shutdown (connection->sock, SHUT_RDWR)) &&
+ if ((GNUNET_OK !=
+ GNUNET_NETWORK_socket_shutdown (connection->sock,
+ SHUT_RDWR)) &&
(ENOTCONN != errno) &&
(ECONNRESET != errno) )
- LOG_STRERROR (GNUNET_ERROR_TYPE_WARNING, "shutdown");
+ LOG_STRERROR (GNUNET_ERROR_TYPE_WARNING,
+ "shutdown");
}
if (NULL != connection->sock)
{
if (GNUNET_YES != connection->persist)
- GNUNET_break (GNUNET_OK == GNUNET_NETWORK_socket_close (connection->sock));
+ {
+ GNUNET_break (GNUNET_OK ==
+ GNUNET_NETWORK_socket_close (connection->sock));
+ }
else
{
GNUNET_NETWORK_socket_free_memory_only_ (connection->sock); /* at least no memory leak (we deliberately
* @param tc scheduler context
*/
static void
-receive_ready (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+receive_ready (void *cls,
+ const struct GNUNET_SCHEDULER_TaskContext *tc)
{
struct GNUNET_CONNECTION_Handle *connection = cls;
char buffer[connection->max];
ssize_t ret;
GNUNET_CONNECTION_Receiver receiver;
- connection->read_task = GNUNET_SCHEDULER_NO_TASK;
+ connection->read_task = NULL;
if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
{
/* ignore shutdown request, go again immediately */
}
GNUNET_assert (GNUNET_NETWORK_fdset_isset (tc->read_ready, connection->sock));
RETRY:
- ret = GNUNET_NETWORK_socket_recv (connection->sock, buffer, connection->max);
+ ret = GNUNET_NETWORK_socket_recv (connection->sock,
+ buffer,
+ connection->max);
if (-1 == ret)
{
if (EINTR == errno)
return;
}
LOG (GNUNET_ERROR_TYPE_DEBUG,
- "receive_ready read %u/%u bytes from `%s' (%p)!\n", (unsigned int) ret,
- connection->max, GNUNET_a2s (connection->addr, connection->addrlen), connection);
+ "receive_ready read %u/%u bytes from `%s' (%p)!\n",
+ (unsigned int) ret,
+ connection->max,
+ GNUNET_a2s (connection->addr,
+ connection->addrlen),
+ connection);
GNUNET_assert (NULL != (receiver = connection->receiver));
connection->receiver = NULL;
- receiver (connection->receiver_cls, buffer, ret, connection->addr, connection->addrlen, 0);
+ receiver (connection->receiver_cls,
+ buffer,
+ ret,
+ connection->addr,
+ connection->addrlen,
+ 0);
}
/**
* Receive data from the given connection. Note that this function will
- * call "receiver" asynchronously using the scheduler. It will
+ * call @a receiver asynchronously using the scheduler. It will
* "immediately" return. Note that there MUST only be one active
* receive call per connection at any given point in time (so do not
* call receive again until the receiver callback has been invoked).
* @param max maximum number of bytes to read
* @param timeout maximum amount of time to wait
* @param receiver function to call with received data
- * @param receiver_cls closure for receiver
+ * @param receiver_cls closure for @a receiver
*/
void
-GNUNET_CONNECTION_receive (struct GNUNET_CONNECTION_Handle *connection, size_t max,
+GNUNET_CONNECTION_receive (struct GNUNET_CONNECTION_Handle *connection,
+ size_t max,
struct GNUNET_TIME_Relative timeout,
GNUNET_CONNECTION_Receiver receiver,
void *receiver_cls)
{
- GNUNET_assert ((GNUNET_SCHEDULER_NO_TASK == connection->read_task) &&
+ GNUNET_assert ((NULL == connection->read_task) &&
(NULL == connection->receiver));
GNUNET_assert (NULL != receiver);
connection->receiver = receiver;
{
connection->read_task =
GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_absolute_get_remaining
- (connection->receive_timeout), connection->sock,
- &receive_ready, connection);
+ (connection->receive_timeout),
+ connection->sock,
+ &receive_ready,
+ connection);
return;
}
- if ((NULL == connection->dns_active) && (NULL == connection->ap_head))
+ if ((NULL == connection->dns_active) &&
+ (NULL == connection->ap_head) &&
+ (NULL == connection->proxy_handshake))
{
connection->receiver = NULL;
receiver (receiver_cls, NULL, 0, NULL, 0, ETIMEDOUT);
void *
GNUNET_CONNECTION_receive_cancel (struct GNUNET_CONNECTION_Handle *connection)
{
- if (GNUNET_SCHEDULER_NO_TASK != connection->read_task)
+ if (NULL != connection->read_task)
{
- GNUNET_assert (connection == GNUNET_SCHEDULER_cancel (connection->read_task));
- connection->read_task = GNUNET_SCHEDULER_NO_TASK;
+ GNUNET_assert (connection ==
+ GNUNET_SCHEDULER_cancel (connection->read_task));
+ connection->read_task = NULL;
}
connection->receiver = NULL;
return connection->receiver_cls;
* have enough space available first)!
*
* @param connection connection for which we should do this processing
- * @return GNUNET_YES if we were able to call notify
+ * @return #GNUNET_YES if we were able to call notify
*/
static int
process_notify (struct GNUNET_CONNECTION_Handle *connection)
size_t size;
GNUNET_CONNECTION_TransmitReadyNotify notify;
- LOG (GNUNET_ERROR_TYPE_DEBUG, "process_notify is running\n");
-
- GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == connection->write_task);
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "process_notify is running\n");
+ GNUNET_assert (NULL == connection->write_task);
if (NULL == (notify = connection->nth.notify_ready))
{
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Noone to notify\n");
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "No one to notify\n");
return GNUNET_NO;
}
used = connection->write_buffer_off - connection->write_buffer_pos;
size = connection->nth.notify_size;
if (size > avail)
{
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Not enough buffer\n");
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Not enough buffer\n");
return GNUNET_NO;
}
connection->nth.notify_ready = NULL;
if (connection->write_buffer_size - connection->write_buffer_off < size)
{
/* need to compact */
- memmove (connection->write_buffer, &connection->write_buffer[connection->write_buffer_pos],
+ memmove (connection->write_buffer,
+ &connection->write_buffer[connection->write_buffer_pos],
used);
connection->write_buffer_off -= connection->write_buffer_pos;
connection->write_buffer_pos = 0;
*
* This task notifies the client about the timeout.
*
- * @param cls the 'struct GNUNET_CONNECTION_Handle'
+ * @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 *connection = cls;
GNUNET_CONNECTION_TransmitReadyNotify notify;
- connection->nth.timeout_task = GNUNET_SCHEDULER_NO_TASK;
+ connection->nth.timeout_task = NULL;
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Transmit to `%s:%u/%s' fails, time out reached (%p).\n",
connection->hostname,
- connection->port, GNUNET_a2s (connection->addr, connection->addrlen), connection);
+ connection->port,
+ GNUNET_a2s (connection->addr,
+ connection->addrlen),
+ connection);
notify = connection->nth.notify_ready;
GNUNET_assert (NULL != notify);
connection->nth.notify_ready = NULL;
*
* This task notifies the client about the error.
*
- * @param cls the 'struct GNUNET_CONNECTION_Handle'
+ * @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 *connection = cls;
GNUNET_CONNECTION_TransmitReadyNotify notify;
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Transmission request of size %u fails (%s/%u), connection failed (%p).\n",
- connection->nth.notify_size, connection->hostname, connection->port, connection);
- connection->write_task = GNUNET_SCHEDULER_NO_TASK;
+ connection->nth.notify_size,
+ connection->hostname,
+ connection->port,
+ connection);
+ connection->write_task = NULL;
notify = connection->nth.notify_ready;
connection->nth.notify_ready = NULL;
notify (connection->nth.notify_ready_cls, 0, NULL);
* @param tc task context describing why we are here
*/
static void
-transmit_ready (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+transmit_ready (void *cls,
+ const struct GNUNET_SCHEDULER_TaskContext *tc)
{
struct GNUNET_CONNECTION_Handle *connection = cls;
GNUNET_CONNECTION_TransmitReadyNotify notify;
ssize_t ret;
size_t have;
- LOG (GNUNET_ERROR_TYPE_DEBUG, "transmit_ready running (%p).\n", connection);
- GNUNET_assert (GNUNET_SCHEDULER_NO_TASK != connection->write_task);
- connection->write_task = GNUNET_SCHEDULER_NO_TASK;
- GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == connection->nth.timeout_task);
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "transmit_ready running (%p).\n",
+ connection);
+ GNUNET_assert (NULL != connection->write_task);
+ connection->write_task = NULL;
+ GNUNET_assert (NULL == connection->nth.timeout_task);
if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
{
if (NULL != connection->sock)
{
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Transmit to `%s' fails, time out reached (%p).\n",
- GNUNET_a2s (connection->addr, connection->addrlen), connection);
+ GNUNET_a2s (connection->addr,
+ connection->addrlen),
+ connection);
notify = connection->nth.notify_ready;
GNUNET_assert (NULL != notify);
connection->nth.notify_ready = NULL;
}
if (!GNUNET_NETWORK_fdset_isset (tc->write_ready, connection->sock))
{
- GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == connection->write_task);
+ GNUNET_assert (NULL == connection->write_task);
/* special circumstances (in particular, shutdown): not yet ready
* to write, but no "fatal" error either. Hence retry. */
goto SCHEDULE_WRITE;
{
if (EINTR == errno)
goto RETRY;
- if (GNUNET_SCHEDULER_NO_TASK != connection->write_task)
+ if (NULL != connection->write_task)
{
GNUNET_SCHEDULER_cancel (connection->write_task);
- connection->write_task = GNUNET_SCHEDULER_NO_TASK;
+ connection->write_task = NULL;
}
signal_transmit_error (connection, errno);
return;
"Re-scheduling transmit_ready (more to do) (%p).\n", connection);
have = connection->write_buffer_off - connection->write_buffer_pos;
GNUNET_assert ((NULL != connection->nth.notify_ready) || (have > 0));
- if (GNUNET_SCHEDULER_NO_TASK == connection->write_task)
+ if (NULL == connection->write_task)
connection->write_task =
GNUNET_SCHEDULER_add_write_net ((connection->nth.notify_ready ==
NULL) ? GNUNET_TIME_UNIT_FOREVER_REL :
/**
* Ask the connection to call us once the specified number of bytes
- * are free in the transmission buffer. May call the notify
- * method immediately if enough space is available.
+ * are free in the transmission buffer. Will never call the @a notify
+ * callback in this task, but always first go into the scheduler.
*
* @param connection connection
* @param size number of bytes to send
* @param timeout after how long should we give up (and call
- * notify with buf NULL and size 0)?
+ * @a notify with buf NULL and size 0)?
* @param notify function to call
- * @param notify_cls closure for notify
+ * @param notify_cls closure for @a notify
* @return non-NULL if the notify callback was queued,
* NULL if we are already going to notify someone else (busy)
*/
connection->nth.connection = connection;
connection->nth.notify_size = size;
connection->nth.transmit_timeout = GNUNET_TIME_relative_to_absolute (timeout);
- GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == connection->nth.timeout_task);
+ GNUNET_assert (NULL == connection->nth.timeout_task);
if ((NULL == connection->sock) &&
(NULL == connection->ap_head) &&
- (NULL == connection->dns_active))
+ (NULL == connection->dns_active) &&
+ (NULL == connection->proxy_handshake))
{
- if (GNUNET_SCHEDULER_NO_TASK != connection->write_task)
+ if (NULL != connection->write_task)
GNUNET_SCHEDULER_cancel (connection->write_task);
- connection->write_task = GNUNET_SCHEDULER_add_now (&connect_error, connection);
+ connection->write_task = GNUNET_SCHEDULER_add_now (&connect_error,
+ connection);
return &connection->nth;
}
- if (GNUNET_SCHEDULER_NO_TASK != connection->write_task)
+ if (NULL != connection->write_task)
return &connection->nth; /* previous transmission still in progress */
if (NULL != connection->sock)
{
/* connected, try to transmit now */
- LOG (GNUNET_ERROR_TYPE_DEBUG, "Scheduling transmission (%p).\n", connection);
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Scheduling transmission (%p).\n",
+ connection);
connection->write_task =
GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_absolute_get_remaining
(connection->nth.transmit_timeout),
}
/* not yet connected, wait for connection */
LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Need to wait to schedule transmission for connection, adding timeout task (%p).\n", connection);
+ "Need to wait to schedule transmission for connection, adding timeout task (%p).\n",
+ connection);
connection->nth.timeout_task =
- GNUNET_SCHEDULER_add_delayed (timeout, &transmit_timeout, connection);
+ GNUNET_SCHEDULER_add_delayed (timeout,
+ &transmit_timeout, connection);
return &connection->nth;
}
* @param th notification to cancel
*/
void
-GNUNET_CONNECTION_notify_transmit_ready_cancel (struct
- GNUNET_CONNECTION_TransmitHandle
- *th)
+GNUNET_CONNECTION_notify_transmit_ready_cancel (struct GNUNET_CONNECTION_TransmitHandle *th)
{
GNUNET_assert (NULL != th->notify_ready);
th->notify_ready = NULL;
- if (GNUNET_SCHEDULER_NO_TASK != th->timeout_task)
+ if (NULL != th->timeout_task)
{
GNUNET_SCHEDULER_cancel (th->timeout_task);
- th->timeout_task = GNUNET_SCHEDULER_NO_TASK;
+ th->timeout_task = NULL;
}
- if (GNUNET_SCHEDULER_NO_TASK != th->connection->write_task)
+ if (NULL != th->connection->write_task)
{
GNUNET_SCHEDULER_cancel (th->connection->write_task);
- th->connection->write_task = GNUNET_SCHEDULER_NO_TASK;
+ th->connection->write_task = NULL;
}
}
+
+/**
+ * Create a connection to be proxied using a given connection.
+ *
+ * @param cph connection to proxy server
+ * @return connection to be proxied
+ */
+struct GNUNET_CONNECTION_Handle *
+GNUNET_CONNECTION_create_proxied_from_handshake (struct GNUNET_CONNECTION_Handle *cph)
+{
+ struct GNUNET_CONNECTION_Handle * proxied = GNUNET_CONNECTION_create_from_existing(NULL);
+ proxied->proxy_handshake = cph;
+ return proxied;
+}
+
+
+/**
+ * Activate proxied connection and destroy initial proxy handshake connection.
+ * There must not be any pending requests for reading or writing to the
+ * proxy hadshake connection at this time.
+ *
+ * @param proxied connection connection to proxy server
+ */
+void
+GNUNET_CONNECTION_acivate_proxied (struct GNUNET_CONNECTION_Handle *proxied)
+{
+ struct GNUNET_CONNECTION_Handle *cph = proxied->proxy_handshake;
+ GNUNET_assert (NULL != cph);
+ GNUNET_assert (NULL == proxied->sock);
+ GNUNET_assert (NULL != cph->sock);
+ proxied->sock=cph->sock;
+ cph->sock=NULL;
+ GNUNET_CONNECTION_destroy (cph);
+ connect_success_continuation (proxied);
+}
+
+
/* end of connection.c */
projects / oweals / gnunet.git / blobdiff