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22 * @file include/gnunet_psyc_service.h
23 * @brief PSYC utilities; receiving/transmitting/logging PSYC messages.
24 * @author Gabor X Toth
27 #ifndef GNUNET_PSYC_UTIL_LIB_H
28 #define GNUNET_PSYC_UTIL_LIB_H
33 #if 0 /* keep Emacsens' auto-indent happy */
38 #include "gnunet_util_lib.h"
39 #include "gnunet_env_lib.h"
40 #include "gnunet_psyc_service.h"
44 * Create a PSYC message.
47 * PSYC method for the message.
49 * Environment for the message.
51 * Data payload for the message.
55 * @return Message header with size information,
56 * followed by the message parts.
58 struct GNUNET_MessageHeader *
59 GNUNET_PSYC_message_create (const char *method_name,
60 const struct GNUNET_ENV_Environment *env,
66 GNUNET_PSYC_log_message (enum GNUNET_ErrorType kind,
67 const struct GNUNET_MessageHeader *msg);
71 GNUNET_PSYC_check_message_parts (uint16_t data_size, const char *data,
72 uint16_t *first_ptype, uint16_t *last_ptype);
75 struct GNUNET_PSYC_TransmitHandle;
78 * Create a transmission handle.
80 struct GNUNET_PSYC_TransmitHandle *
81 GNUNET_PSYC_transmit_create ();
85 * Destroy a transmission handle.
88 GNUNET_PSYC_transmit_destroy (struct GNUNET_PSYC_TransmitHandle *tmit);
94 * @param tmit Transmission handle.
95 * @param method_name Which method should be invoked.
96 * @param env Environment for the message.
97 * Should stay available until the first call to notify_data.
98 * Can be NULL if there are no modifiers or @a notify_mod is provided instead.
99 * @param notify_mod Function to call to obtain modifiers.
100 * Can be NULL if there are no modifiers or @a env is provided instead.
101 * @param notify_data Function to call to obtain fragments of the data.
102 * @param notify_cls Closure for @a notify_mod and @a notify_data.
103 * @param flags Flags for the message being transmitted.
105 * @return #GNUNET_OK if the transmission was started.
106 * #GNUNET_SYSERR if another transmission is already going on.
109 GNUNET_PSYC_transmit_message (struct GNUNET_PSYC_TransmitHandle *tmit,
110 const char *method_name,
111 const struct GNUNET_ENV_Environment *env,
112 GNUNET_PSYC_TransmitNotifyModifier notify_mod,
113 GNUNET_PSYC_TransmitNotifyData notify_data,
119 * Resume transmission.
121 * @param tmit Transmission handle.
124 GNUNET_PSYC_transmit_resume (struct GNUNET_PSYC_TransmitHandle *tmit);
128 * Abort transmission request.
130 * @param tmit Transmission handle.
133 GNUNET_PSYC_transmit_cancel (struct GNUNET_PSYC_TransmitHandle *tmit);
137 * Got acknowledgement of a transmitted message part, continue transmission.
139 * @param tmit Transmission handle.
142 GNUNET_PSYC_transmit_got_ack (struct GNUNET_PSYC_TransmitHandle *tmit);
145 struct GNUNET_PSYC_ReceiveHandle;
149 * Create handle for receiving messages.
151 struct GNUNET_PSYC_ReceiveHandle *
152 GNUNET_PSYC_receive_create (GNUNET_PSYC_MessageCallback message_cb,
153 GNUNET_PSYC_MessageCallback hist_message_cb,
158 * Destroy handle for receiving messages.
161 GNUNET_PSYC_receive_destroy (struct GNUNET_PSYC_ReceiveHandle *recv);
165 * Reset stored data related to the last received message.
168 GNUNET_PSYC_receive_reset (struct GNUNET_PSYC_ReceiveHandle *recv);
172 * Handle incoming PSYC message.
174 * @param recv Receive handle.
175 * @param msg The message.
177 * @return #GNUNET_OK on success,
178 * #GNUNET_SYSERR on receive error.
181 GNUNET_PSYC_receive_message (struct GNUNET_PSYC_ReceiveHandle *recv,
182 const struct GNUNET_PSYC_MessageHeader *msg);
186 * Check if @a data contains a series of valid message parts.
188 * @param data_size Size of @a data.
190 * @param[out] first_ptype Type of first message part.
191 * @param[out] last_ptype Type of last message part.
193 * @return Number of message parts found in @a data.
194 * or GNUNET_SYSERR if the message contains invalid parts.
197 GNUNET_PSYC_receive_check_parts (uint16_t data_size, const char *data,
198 uint16_t *first_ptype, uint16_t *last_ptype);
201 #if 0 /* keep Emacsens' auto-indent happy */
208 /* ifndef GNUNET_PSYC_UTIL_LIB_H */
210 /* end of gnunet_psyc_util_lib.h */