2 This file is part of GNUnet.
3 (C) 2013 Christian Grothoff (and other contributing authors)
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13 General Public License for more details.
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22 * @file mesh/gnunet-service-mesh_channel.h
23 * @brief mesh service; dealing with end-to-end channels
24 * @author Bartlomiej Polot
26 * All functions in this file should use the prefix GMCH (Gnunet Mesh CHannel)
29 #ifndef GNUNET_SERVICE_MESH_CHANNEL_H
30 #define GNUNET_SERVICE_MESH_CHANNEL_H
35 #if 0 /* keep Emacsens' auto-indent happy */
41 #include "gnunet_util_lib.h"
43 #include "mesh_protocol_enc.h"
47 * Struct containing all information regarding a channel to a remote client.
52 #include "gnunet-service-mesh_tunnel.h"
63 GMCH_get_id (const struct MeshChannel *ch);
66 * Get the channel tunnel.
68 * @param ch Channel to get the tunnel from.
70 * @return tunnel of the channel.
73 GMCH_get_tunnel (const struct MeshChannel *ch);
76 * Get free buffer space towards the client on a specific channel.
79 * @param fwd Is query about FWD traffic?
81 * @return Free buffer space [0 - 64]
84 GMCH_get_buffer (struct MeshChannel *ch, int fwd);
87 * Is the root client for this channel on this peer?
90 * @param fwd Is this for fwd traffic?
92 * @return GNUNET_YES in case it is.
95 GMCH_is_origin (struct MeshChannel *ch, int fwd);
98 * Is the destination client for this channel on this peer?
101 * @param fwd Is this for fwd traffic?
103 * @return GNUNET_YES in case it is.
106 GMCH_is_terminal (struct MeshChannel *ch, int fwd);
109 * Send an end-to-end ACK message for the most recent in-sequence payload.
111 * If channel is not reliable, do nothing.
113 * @param ch Channel this is about.
114 * @param fwd Is for FWD traffic? (ACK dest->owner)
117 GMCH_send_ack (struct MeshChannel *ch, int fwd);
120 * Send data on a channel.
122 * If the destination is local, send it to client, otherwise encrypt and
126 * @param msg Message.
127 * @param fwd Is this a fwd (root->dest) message?
130 GMCH_send_data (struct MeshChannel *ch,
131 const struct GNUNET_MESH_Data *msg,
135 * Notify the destination client that a new incoming channel was created.
137 * @param ch Channel that was created.
140 GMCH_send_create (struct MeshChannel *ch);
144 * Notify a client that the channel is no longer valid.
146 * @param ch Channel that is destroyed.
149 GMCH_send_destroy (struct MeshChannel *ch);
158 GMCH_debug (struct MeshChannel *ch);
162 * Handler for mesh network payload traffic.
164 * @param ch Channel for the message.
165 * @param message Unencryted data message.
166 * @param fwd Is this FWD traffic? GNUNET_YES : GNUNET_NO;
169 GMCH_handle_data (struct MeshChannel *ch,
170 const struct GNUNET_MESH_Data *msg,
175 * Handler for mesh network traffic end-to-end ACKs.
177 * @param t Tunnel on which we got this message.
178 * @param message Data message.
179 * @param fwd Is this a fwd ACK? (dest->orig)
182 GMCH_handle_data_ack (struct MeshChannel *ch,
183 const struct GNUNET_MESH_DataACK *msg,
188 * Handler for channel create messages.
190 * @param t Tunnel this channel is to be created in.
191 * @param msg Message.
192 * @param fwd Is this FWD traffic? GNUNET_YES : GNUNET_NO;
195 GMCH_handle_create (const struct GNUNET_MESH_ChannelCreate *msg,
200 * Handler for channel ack messages.
202 * @param t Tunnel this channel is to be created in.
203 * @param msg Message.
204 * @param fwd Is this FWD traffic? GNUNET_YES : GNUNET_NO;
207 GMCH_handle_ack (struct MeshChannel *ch,
208 const struct GNUNET_MESH_ChannelManage *msg,
213 * Handler for channel destroy messages.
215 * @param t Tunnel this channel is to be destroyed of.
216 * @param msg Message.
217 * @param fwd Is this FWD traffic? GNUNET_YES : GNUNET_NO;
220 GMCH_handle_destroy (struct MeshChannel *ch,
221 const struct GNUNET_MESH_ChannelManage *msg,
227 * Sends an already built message on a channel, properly registering
228 * all used resources and encrypting the message with the tunnel's key.
230 * @param message Message to send. Function makes a copy of it.
231 * @param ch Channel on which this message is transmitted.
232 * @param fwd Is this a fwd message?
235 GMCH_send_prebuilt_message (const struct GNUNET_MessageHeader *message,
236 struct MeshChannel *ch, int fwd);
239 #if 0 /* keep Emacsens' auto-indent happy */
246 /* ifndef GNUNET_SERVICE_MESH_CHANNEL_H */
248 /* end of gnunet-service-mesh_channel.h */