/**
* Function called by the transport for each received message.
* This function should also be called with "NULL" for the
* message to signal that the other peer disconnected.
*
* @param cls closure, const char* with the name of the plugin we received the message from
* @param peer (claimed) identity of the other peer
* @param message the message, NULL if we only care about
* learning about the delay until we should receive again -- FIXME!
* @param ats performance information
* @param ats_count number of records in ats
* @param session identifier used for this session (NULL for plugins
* that do not offer bi-directional communication to the sender
* using the same "connection")
* @param sender_address binary address of the sender (if we established the
* connection or are otherwise sure of it; should be NULL
* for inbound TCP/UDP connections since it it not clear
* that we could establish ourselves a connection to that
* IP address and get the same system)
* @param sender_address_len number of bytes in sender_address
* @return how long the plugin should wait until receiving more data
* (plugins that do not support this, can ignore the return value)
*/
static struct GNUNET_TIME_Relative
plugin_env_receive_callback (void *cls, const struct GNUNET_PeerIdentity *peer,
const struct GNUNET_MessageHeader *message,
const struct GNUNET_ATS_Information *ats,
uint32_t ats_count, struct Session *session,
const char *sender_address,
uint16_t sender_address_len)
{
const char *plugin_name = cls;
struct GNUNET_TIME_Relative ret;
struct GNUNET_HELLO_Address address;
uint16_t type;
address.peer = *peer;
address.address = sender_address;
address.address_length = sender_address_len;
address.transport_name = plugin_name;
ret = GNUNET_TIME_UNIT_ZERO;
if (NULL == message)
goto end;
type = ntohs (message->type);
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received Message with type %u from peer `%s'\n", type, GNUNET_i2s (peer));
GNUNET_STATISTICS_update (GST_stats,
gettext_noop
("# bytes total received"),
ntohs (message->size), GNUNET_NO);
switch (type)
{
case GNUNET_MESSAGE_TYPE_HELLO:
GST_validation_handle_hello (message);
return ret;
case GNUNET_MESSAGE_TYPE_TRANSPORT_PING:
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
"Processing `%s' from `%s'\n", "PING",
(sender_address !=
NULL) ? GST_plugins_a2s (&address) : "<inbound>");
GST_validation_handle_ping (peer, message, &address, session);
break;
case GNUNET_MESSAGE_TYPE_TRANSPORT_PONG:
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
"Processing `%s' from `%s'\n", "PONG",
(sender_address !=
NULL) ? GST_plugins_a2s (&address) : "<inbound>");
GST_validation_handle_pong (peer, message);
break;
case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_CONNECT:
GST_neighbours_handle_connect (message, peer, &address, session, ats,
ats_count);
break;
case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_CONNECT_ACK:
GST_neighbours_handle_connect_ack (message, peer, &address, session, ats,
ats_count);
break;
case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_ACK:
GST_neighbours_handle_session_ack (message, peer, &address, session, ats,
ats_count);
break;
case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_DISCONNECT:
GST_neighbours_handle_disconnect_message (peer, message);
break;
case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_KEEPALIVE:
GST_neighbours_keepalive (peer);
break;
case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_KEEPALIVE_RESPONSE:
GST_neighbours_keepalive_response (peer, ats, ats_count);
break;
default:
/* should be payload */
GNUNET_STATISTICS_update (GST_stats,
gettext_noop
("# bytes payload received"),
ntohs (message->size), GNUNET_NO);
ret = process_payload (peer, &address, session, message, ats, ats_count);
break;
}
end:
#if 1
/* FIXME: this should not be needed, and not sure it's good to have it, but without
* this connections seem to go extra-slow */
GNUNET_ATS_address_update (GST_ats, &address, session, ats, ats_count);
#endif
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Allowing receive from peer %s to continue in %llu ms\n",
GNUNET_i2s (peer), (unsigned long long) ret.rel_value);
return ret;
}
/**
* Function called by the transport for each received message.
*
* @param cls closure, const char* with the name of the plugin we received the message from
* @param address address and (claimed) identity of the other peer
* @param message the message, NULL if we only care about
* learning about the delay until we should receive again
* @param session identifier used for this session (NULL for plugins
* that do not offer bi-directional communication to the sender
* using the same "connection")
* @return how long the plugin should wait until receiving more data
* (plugins that do not support this, can ignore the return value)
*/
struct GNUNET_TIME_Relative
GST_receive_callback (void *cls,
const struct GNUNET_HELLO_Address *address,
struct GNUNET_ATS_Session *session,
const struct GNUNET_MessageHeader *message)
{
const char *plugin_name = cls;
struct GNUNET_TIME_Relative ret;
uint16_t type;
ret = GNUNET_TIME_UNIT_ZERO;
if (NULL == message)
goto end;
type = ntohs (message->type);
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Received message with type %u from peer `%s'\n",
type,
GNUNET_i2s (&address->peer));
GNUNET_STATISTICS_update (GST_stats,
gettext_noop ("# bytes total received"),
ntohs (message->size),
GNUNET_NO);
GST_neighbours_notify_data_recv (address,
message);
switch (type)
{
case GNUNET_MESSAGE_TYPE_HELLO_LEGACY:
/* Legacy HELLO message, discard */
return ret;
case GNUNET_MESSAGE_TYPE_HELLO:
if (GNUNET_OK != GST_validation_handle_hello (message))
{
GNUNET_break_op (0);
GST_blacklist_abort_matching (address,
session);
}
return ret;
case GNUNET_MESSAGE_TYPE_TRANSPORT_PING:
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Processing PING from `%s'\n",
GST_plugins_a2s (address));
if (GNUNET_OK !=
GST_validation_handle_ping (&address->peer,
message,
address,
session))
{
GST_blacklist_abort_matching (address,
session);
kill_session (plugin_name,
session);
}
break;
case GNUNET_MESSAGE_TYPE_TRANSPORT_PONG:
GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
"Processing PONG from `%s'\n",
GST_plugins_a2s (address));
if (GNUNET_OK != GST_validation_handle_pong (&address->peer, message))
{
GNUNET_break_op (0);
GST_blacklist_abort_matching (address,
session);
kill_session (plugin_name, session);
}
break;
case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_SYN:
/* Do blacklist check if communication with this peer is allowed */
(void) GST_blacklist_test_allowed (&address->peer,
NULL,
&connect_bl_check_cont,
GNUNET_copy_message (message),
address,
session);
break;
case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_SYN_ACK:
if (GNUNET_OK !=
GST_neighbours_handle_session_syn_ack (message,
address,
session))
{
GST_blacklist_abort_matching (address, session);
kill_session (plugin_name, session);
}
break;
case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_ACK:
if (GNUNET_OK !=
GST_neighbours_handle_session_ack (message,
address,
session))
{
GNUNET_break_op(0);
GST_blacklist_abort_matching (address, session);
kill_session (plugin_name, session);
}
break;
case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_DISCONNECT:
GST_neighbours_handle_disconnect_message (&address->peer,
message);
break;
case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_QUOTA:
GST_neighbours_handle_quota_message (&address->peer,
message);
break;
case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_KEEPALIVE:
GST_neighbours_keepalive (&address->peer,
message);
break;
case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_KEEPALIVE_RESPONSE:
GST_neighbours_keepalive_response (&address->peer,
message);
break;
default:
/* should be payload */
GNUNET_STATISTICS_update (GST_stats,
gettext_noop ("# bytes payload received"),
ntohs (message->size),
GNUNET_NO);
ret = process_payload (address,
session,
message);
break;
}
end:
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Allowing receive from peer %s to continue in %s\n",
GNUNET_i2s (&address->peer),
GNUNET_STRINGS_relative_time_to_string (ret,
GNUNET_YES));
return ret;
}