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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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_EXTRA_LOGGING
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 * Plugin HTTPS SSL/TLS options
164 * ----------------------------
168 * libCurl TLS crypto init string, can be set to enhance performance
172 * Use RC4-128 instead of AES:
173 * NONE:+VERS-TLS1.0:+ARCFOUR-128:+SHA1:+RSA:+COMP-NULL
194 * Current number of establishes connections
199 * Last used unique HTTP connection tag
211 struct MHD_Daemon *server_v4;
216 GNUNET_SCHEDULER_TaskIdentifier server_v4_task;
221 struct MHD_Daemon *server_v6;
226 GNUNET_SCHEDULER_TaskIdentifier server_v6_task;
229 * IPv4 server socket to bind to
231 struct sockaddr_in *server_addr_v4;
234 * IPv6 server socket to bind to
236 struct sockaddr_in6 *server_addr_v6;
239 * Server semi connections
240 * A full session consists of 2 semi-connections: send and receive
241 * If not both directions are established the server keeps this sessions here
243 struct Session *server_semi_head;
245 struct Session *server_semi_tail;
259 GNUNET_SCHEDULER_TaskIdentifier client_perform_task;
263 GNUNET_NETWORK_STRUCT_BEGIN
268 struct IPv4HttpAddress
271 * IPv4 address, in network byte order.
273 uint32_t ipv4_addr GNUNET_PACKED;
276 * Port number, in network byte order.
278 uint16_t u4_port GNUNET_PACKED;
284 struct IPv6HttpAddress
289 struct in6_addr ipv6_addr GNUNET_PACKED;
292 * Port number, in network byte order.
294 uint16_t u6_port GNUNET_PACKED;
296 GNUNET_NETWORK_STRUCT_END
299 * Session handle for connections.
305 * Stored in a linked list.
307 struct Session *next;
310 * Stored in a linked list.
312 struct Session *prev;
315 * Pointer to the global plugin struct.
317 struct Plugin *plugin;
330 * ATS network type in NBO
332 uint32_t ats_address_network_type;
335 * To whom are we talking to
337 struct GNUNET_PeerIdentity target;
340 * next pointer for double linked list
342 struct HTTP_Message *msg_head;
345 * previous pointer for double linked list
347 struct HTTP_Message *msg_tail;
351 * Message stream tokenizer for incoming data
353 struct GNUNET_SERVER_MessageStreamTokenizer *msg_tk;
356 * Absolute time when to receive data again
357 * Used for receive throttling
359 struct GNUNET_TIME_Absolute next_receive;
362 * Inbound or outbound connection
363 * Outbound: GNUNET_NO (client is used to send and receive)
364 * Inbound : GNUNET_YES (server is used to send and receive)
369 * Unique HTTP/S connection tag for this connection
383 * Client receive handle
388 * Task to wake up client receive handle when receiving is allowed again
390 GNUNET_SCHEDULER_TaskIdentifier recv_wakeup_task;
393 * Is client send handle paused since there are no data to send?
396 int client_put_paused;
414 * Message to send using http
419 * next pointer for double linked list
421 struct HTTP_Message *next;
424 * previous pointer for double linked list
426 struct HTTP_Message *prev;
429 * buffer containing data to send
434 * amount of data already sent
444 * Continuation function to call once the transmission buffer
445 * has again space available. NULL if there is no
446 * continuation to call.
448 GNUNET_TRANSPORT_TransmitContinuation transmit_cont;
451 * Closure for transmit_cont.
453 void *transmit_cont_cls;
457 delete_session (struct Session *s);
460 create_session (struct Plugin *plugin, const struct GNUNET_PeerIdentity *target,
461 const void *addr, size_t addrlen,
462 GNUNET_TRANSPORT_TransmitContinuation cont, void *cont_cls);
464 struct GNUNET_TIME_Relative
465 http_plugin_receive (void *cls, const struct GNUNET_PeerIdentity *peer,
466 const struct GNUNET_MessageHeader *message,
467 struct Session *session, const char *sender_address,
468 uint16_t sender_address_len);
471 http_plugin_address_to_string (void *cls, const void *addr, size_t addrlen);
474 client_disconnect (struct Session *s);
477 client_connect (struct Session *s);
480 client_send (struct Session *s, struct HTTP_Message *msg);
483 client_start (struct Plugin *plugin);
486 client_stop (struct Plugin *plugin);
489 server_disconnect (struct Session *s);
492 server_send (struct Session *s, struct HTTP_Message *msg);
495 server_start (struct Plugin *plugin);
498 server_stop (struct Plugin *plugin);
501 notify_session_end (void *cls, const struct GNUNET_PeerIdentity *peer,
504 /* end of plugin_transport_http.h */