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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_YES
46 #define VERBOSE_SERVER GNUNET_YES
47 #define VERBOSE_CLIENT GNUNET_YES
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, 3)
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
151 * Maximum number of sockets the plugin can use
152 * Each http inbound /outbound connections are two connections
157 * Plugin HTTPS SSL/TLS options
158 * ----------------------------
162 * libCurl TLS crypto init string, can be set to enhance performance
166 * Use RC4-128 instead of AES:
167 * NONE:+VERS-TLS1.0:+ARCFOUR-128:+SHA1:+RSA:+COMP-NULL
188 * Current number of establishes connections
193 * Last used unique HTTP connection tag
205 struct MHD_Daemon *server_v4;
210 GNUNET_SCHEDULER_TaskIdentifier server_v4_task;
215 struct MHD_Daemon *server_v6;
220 GNUNET_SCHEDULER_TaskIdentifier server_v6_task;
223 * IPv4 server socket to bind to
225 struct sockaddr_in * server_addr_v4;
228 * IPv6 server socket to bind to
230 struct sockaddr_in6 * server_addr_v6;
233 * Server semi connections
234 * A full session consists of 2 semi-connections: send and receive
235 * If not both directions are established the server keeps this sessions here
237 struct Session *server_semi_head;
239 struct Session *server_semi_tail;
253 GNUNET_SCHEDULER_TaskIdentifier client_perform_task;
258 * Session handle for connections.
264 * Stored in a linked list.
266 struct Session *next;
269 * Stored in a linked list.
271 struct Session *prev;
274 * Pointer to the global plugin struct.
276 struct Plugin *plugin;
289 * To whom are we talking to
291 struct GNUNET_PeerIdentity target;
294 * next pointer for double linked list
296 struct HTTP_Message *msg_head;
299 * previous pointer for double linked list
301 struct HTTP_Message *msg_tail;
305 * Message stream tokenizer for incoming data
307 struct GNUNET_SERVER_MessageStreamTokenizer *msg_tk;
310 * Absolute time when to receive data again
311 * Used for receive throttling
313 struct GNUNET_TIME_Absolute next_receive;
316 * Inbound or outbound connection
317 * Outbound: GNUNET_NO (client is used to send and receive)
318 * Inbound : GNUNET_YES (server is used to send and receive)
323 * Unique HTTP/S connection tag for this connection
337 * Client receive handle
342 * Task to wake up client receive handle when receiving is allowed again
344 GNUNET_SCHEDULER_TaskIdentifier recv_wakeup_task;
347 * Is client send handle paused since there are no data to send?
350 int client_put_paused;
368 * Message to send using http
373 * next pointer for double linked list
375 struct HTTP_Message *next;
378 * previous pointer for double linked list
380 struct HTTP_Message *prev;
383 * buffer containing data to send
388 * amount of data already sent
398 * Continuation function to call once the transmission buffer
399 * has again space available. NULL if there is no
400 * continuation to call.
402 GNUNET_TRANSPORT_TransmitContinuation transmit_cont;
405 * Closure for transmit_cont.
407 void *transmit_cont_cls;
411 delete_session (struct Session *s);
414 create_session (struct Plugin *plugin, const struct GNUNET_PeerIdentity *target,
415 const void *addr, size_t addrlen,
416 GNUNET_TRANSPORT_TransmitContinuation cont, void *cont_cls);
418 struct GNUNET_TIME_Relative
419 http_plugin_receive (void *cls, const struct GNUNET_PeerIdentity * peer,
420 const struct GNUNET_MessageHeader * message,
421 struct Session * session,
422 const char *sender_address,
423 uint16_t sender_address_len);
426 http_plugin_address_to_string (void *cls, const void *addr, size_t addrlen);
429 client_disconnect (struct Session *s);
432 client_connect (struct Session *s);
435 client_send (struct Session *s, struct HTTP_Message *msg);
438 client_start (struct Plugin *plugin);
441 client_stop (struct Plugin *plugin);
444 server_disconnect (struct Session *s);
447 server_send (struct Session *s, struct HTTP_Message * msg);
450 server_start (struct Plugin *plugin);
453 server_stop (struct Plugin *plugin);
456 notify_session_end (void *cls,
457 const struct GNUNET_PeerIdentity *
458 peer, struct Session * s);
460 /* end of plugin_transport_http.h */