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13 General Public License for more details.
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22 * @file transport/plugin_transport_http.h
23 * @brief http transport service plugin
24 * @author Matthias Wachs
28 #include "gnunet_common.h"
29 #include "gnunet_constants.h"
30 #include "gnunet_protocols.h"
31 #include "gnunet_connection_lib.h"
32 #include "gnunet_service_lib.h"
33 #include "gnunet_statistics_service.h"
34 #include "gnunet_transport_service.h"
35 #include "gnunet_resolver_service.h"
36 #include "gnunet_server_lib.h"
37 #include "gnunet_container_lib.h"
38 #include "gnunet_transport_plugin.h"
39 #include "gnunet_os_lib.h"
40 #include "gnunet_nat_lib.h"
41 #include "microhttpd.h"
42 #include <curl/curl.h>
45 #define DEBUG_HTTP GNUNET_EXTRA_LOGGING
46 #define VERBOSE_SERVER GNUNET_EXTRA_LOGGING
47 #define VERBOSE_CLIENT GNUNET_EXTRA_LOGGING
48 #define VERBOSE_CURL GNUNET_NO
51 #define LIBGNUNET_PLUGIN_TRANSPORT_INIT libgnunet_plugin_transport_https_init
52 #define LIBGNUNET_PLUGIN_TRANSPORT_DONE libgnunet_plugin_transport_https_done
54 #define LIBGNUNET_PLUGIN_TRANSPORT_INIT libgnunet_plugin_transport_http_init
55 #define LIBGNUNET_PLUGIN_TRANSPORT_DONE libgnunet_plugin_transport_http_done
58 #define INBOUND GNUNET_YES
59 #define OUTBOUND GNUNET_NO
62 #define HTTP_NOT_VALIDATED_TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 15)
65 * Encapsulation of all of the state of the plugin.
77 struct GNUNET_TRANSPORT_PluginEnvironment *env;
80 * Linked list of open sessions.
88 * NAT handle & address management
90 struct GNUNET_NAT_Handle *nat;
93 * List of own addresses
97 * IPv4 addresses DLL head
99 struct IPv4HttpAddressWrapper *ipv4_addr_head;
102 * IPv4 addresses DLL tail
104 struct IPv4HttpAddressWrapper *ipv4_addr_tail;
107 * IPv6 addresses DLL head
109 struct IPv6HttpAddressWrapper *ipv6_addr_head;
112 * IPv6 addresses DLL tail
114 struct IPv6HttpAddressWrapper *ipv6_addr_tail;
117 * Plugin configuration
118 * --------------------
123 * Equals configuration section: transport-http, transport-https
135 * GNUNET_YES or GNUNET_NO
141 * GNUNET_YES or GNUNET_NO
146 * Does plugin just use outbound connections and not accept inbound?
157 * Maximum number of sockets the plugin can use
158 * Each http inbound /outbound connections are two connections
163 * Number of outbound sessions
165 unsigned int outbound_sessions;
168 * Number of inbound sessions
170 unsigned int inbound_sessions;
173 * Plugin HTTPS SSL/TLS options
174 * ----------------------------
178 * libCurl TLS crypto init string, can be set to enhance performance
182 * Use RC4-128 instead of AES:
183 * NONE:+VERS-TLS1.0:+ARCFOUR-128:+SHA1:+RSA:+COMP-NULL
204 * Current number of establishes connections
209 * Last used unique HTTP connection tag
221 struct MHD_Daemon *server_v4;
226 GNUNET_SCHEDULER_TaskIdentifier server_v4_task;
231 struct MHD_Daemon *server_v6;
236 GNUNET_SCHEDULER_TaskIdentifier server_v6_task;
239 * IPv4 server socket to bind to
241 struct sockaddr_in *server_addr_v4;
244 * IPv6 server socket to bind to
246 struct sockaddr_in6 *server_addr_v6;
249 * Server semi connections
250 * A full session consists of 2 semi-connections: send and receive
251 * If not both directions are established the server keeps this sessions here
253 struct Session *server_semi_head;
255 struct Session *server_semi_tail;
269 GNUNET_SCHEDULER_TaskIdentifier client_perform_task;
273 GNUNET_NETWORK_STRUCT_BEGIN
278 struct IPv4HttpAddress
281 * IPv4 address, in network byte order.
283 uint32_t ipv4_addr GNUNET_PACKED;
286 * Port number, in network byte order.
288 uint16_t u4_port GNUNET_PACKED;
294 struct IPv6HttpAddress
299 struct in6_addr ipv6_addr GNUNET_PACKED;
302 * Port number, in network byte order.
304 uint16_t u6_port GNUNET_PACKED;
306 GNUNET_NETWORK_STRUCT_END
309 struct ServerConnection
314 /* Should this connection get disconnected? GNUNET_YES/NO */
317 /* The session this server connection belongs to */
318 struct Session *session;
320 /* The MHD connection */
321 struct MHD_Connection *mhd_conn;
327 * Session handle for connections.
333 * Stored in a linked list.
335 struct Session *next;
338 * Stored in a linked list.
340 struct Session *prev;
343 * Pointer to the global plugin struct.
345 struct Plugin *plugin;
358 * ATS network type in NBO
360 uint32_t ats_address_network_type;
363 * To whom are we talking to
365 struct GNUNET_PeerIdentity target;
368 * next pointer for double linked list
370 struct HTTP_Message *msg_head;
373 * previous pointer for double linked list
375 struct HTTP_Message *msg_tail;
379 * Message stream tokenizer for incoming data
381 struct GNUNET_SERVER_MessageStreamTokenizer *msg_tk;
384 * Absolute time when to receive data again
385 * Used for receive throttling
387 struct GNUNET_TIME_Absolute next_receive;
390 * Inbound or outbound connection
391 * Outbound: GNUNET_NO (client is used to send and receive)
392 * Inbound : GNUNET_YES (server is used to send and receive)
397 * Unique HTTP/S connection tag for this connection
411 * Client receive handle
416 * Task to wake up client receive handle when receiving is allowed again
418 GNUNET_SCHEDULER_TaskIdentifier recv_wakeup_task;
421 * Session timeout task
423 GNUNET_SCHEDULER_TaskIdentifier timeout_task;
426 * Is client send handle paused since there are no data to send?
429 int client_put_paused;
438 struct ServerConnection *server_recv;
443 struct ServerConnection *server_send;
447 * Message to send using http
452 * next pointer for double linked list
454 struct HTTP_Message *next;
457 * previous pointer for double linked list
459 struct HTTP_Message *prev;
462 * buffer containing data to send
467 * amount of data already sent
477 * Continuation function to call once the transmission buffer
478 * has again space available. NULL if there is no
479 * continuation to call.
481 GNUNET_TRANSPORT_TransmitContinuation transmit_cont;
484 * Closure for transmit_cont.
486 void *transmit_cont_cls;
490 create_session (struct Plugin *plugin, const struct GNUNET_PeerIdentity *target,
491 const void *addr, size_t addrlen);
494 exist_session (struct Plugin *plugin, struct Session *s);
497 delete_session (struct Session *s);
500 exist_session (struct Plugin *plugin, struct Session *s);
502 struct GNUNET_TIME_Relative
503 http_plugin_receive (void *cls, const struct GNUNET_PeerIdentity *peer,
504 const struct GNUNET_MessageHeader *message,
505 struct Session *session, const char *sender_address,
506 uint16_t sender_address_len);
509 http_plugin_address_to_string (void *cls, const void *addr, size_t addrlen);
512 client_disconnect (struct Session *s);
515 client_connect (struct Session *s);
518 client_send (struct Session *s, struct HTTP_Message *msg);
521 client_start (struct Plugin *plugin);
524 client_stop (struct Plugin *plugin);
527 server_disconnect (struct Session *s);
530 server_send (struct Session *s, struct HTTP_Message *msg);
533 server_start (struct Plugin *plugin);
536 server_stop (struct Plugin *plugin);
539 notify_session_end (void *cls, const struct GNUNET_PeerIdentity *peer,
542 /* end of plugin_transport_http.h */