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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;
229 * The IPv4 server is scheduled to run asap
231 int server_v4_immediately;
236 struct MHD_Daemon *server_v6;
241 GNUNET_SCHEDULER_TaskIdentifier server_v6_task;
244 * The IPv6 server is scheduled to run asap
247 int server_v6_immediately;
250 * IPv4 server socket to bind to
252 struct sockaddr_in *server_addr_v4;
255 * IPv6 server socket to bind to
257 struct sockaddr_in6 *server_addr_v6;
260 * Server semi connections
261 * A full session consists of 2 semi-connections: send and receive
262 * If not both directions are established the server keeps this sessions here
264 struct Session *server_semi_head;
266 struct Session *server_semi_tail;
280 GNUNET_SCHEDULER_TaskIdentifier client_perform_task;
284 GNUNET_NETWORK_STRUCT_BEGIN
289 struct IPv4HttpAddress
292 * IPv4 address, in network byte order.
294 uint32_t ipv4_addr GNUNET_PACKED;
297 * Port number, in network byte order.
299 uint16_t u4_port GNUNET_PACKED;
305 struct IPv6HttpAddress
310 struct in6_addr ipv6_addr GNUNET_PACKED;
313 * Port number, in network byte order.
315 uint16_t u6_port GNUNET_PACKED;
317 GNUNET_NETWORK_STRUCT_END
320 struct ServerConnection
325 /* Should this connection get disconnected? GNUNET_YES/NO */
328 /* The session this server connection belongs to */
329 struct Session *session;
331 /* The MHD connection */
332 struct MHD_Connection *mhd_conn;
338 * Session handle for connections.
343 * To whom are we talking to
345 struct GNUNET_PeerIdentity target;
348 * Stored in a linked list.
350 struct Session *next;
353 * Stored in a linked list.
355 struct Session *prev;
358 * Pointer to the global plugin struct.
360 struct Plugin *plugin;
373 * ATS network type in NBO
375 uint32_t ats_address_network_type;
378 * next pointer for double linked list
380 struct HTTP_Message *msg_head;
383 * previous pointer for double linked list
385 struct HTTP_Message *msg_tail;
389 * Message stream tokenizer for incoming data
391 struct GNUNET_SERVER_MessageStreamTokenizer *msg_tk;
394 * Absolute time when to receive data again
395 * Used for receive throttling
397 struct GNUNET_TIME_Absolute next_receive;
400 * Inbound or outbound connection
401 * Outbound: GNUNET_NO (client is used to send and receive)
402 * Inbound : GNUNET_YES (server is used to send and receive)
407 * Unique HTTP/S connection tag for this connection
421 * Client receive handle
426 * Task to wake up client receive handle when receiving is allowed again
428 GNUNET_SCHEDULER_TaskIdentifier recv_wakeup_task;
431 * Session timeout task
433 GNUNET_SCHEDULER_TaskIdentifier timeout_task;
436 * Is client send handle paused since there are no data to send?
439 int client_put_paused;
448 struct ServerConnection *server_recv;
453 struct ServerConnection *server_send;
457 * Message to send using http
462 * next pointer for double linked list
464 struct HTTP_Message *next;
467 * previous pointer for double linked list
469 struct HTTP_Message *prev;
472 * buffer containing data to send
477 * amount of data already sent
487 * Continuation function to call once the transmission buffer
488 * has again space available. NULL if there is no
489 * continuation to call.
491 GNUNET_TRANSPORT_TransmitContinuation transmit_cont;
494 * Closure for transmit_cont.
496 void *transmit_cont_cls;
500 create_session (struct Plugin *plugin, const struct GNUNET_PeerIdentity *target,
501 const void *addr, size_t addrlen);
504 exist_session (struct Plugin *plugin, struct Session *s);
507 delete_session (struct Session *s);
510 exist_session (struct Plugin *plugin, struct Session *s);
512 struct GNUNET_TIME_Relative
513 http_plugin_receive (void *cls, const struct GNUNET_PeerIdentity *peer,
514 const struct GNUNET_MessageHeader *message,
515 struct Session *session, const char *sender_address,
516 uint16_t sender_address_len);
519 http_plugin_address_to_string (void *cls, const void *addr, size_t addrlen);
522 client_disconnect (struct Session *s);
525 client_connect (struct Session *s);
528 client_send (struct Session *s, struct HTTP_Message *msg);
531 client_start (struct Plugin *plugin);
534 client_stop (struct Plugin *plugin);
537 server_disconnect (struct Session *s);
540 server_send (struct Session *s, struct HTTP_Message *msg);
543 server_start (struct Plugin *plugin);
546 server_stop (struct Plugin *plugin);
549 notify_session_end (void *cls, const struct GNUNET_PeerIdentity *peer,
552 /* end of plugin_transport_http.h */