2 This file is part of GNUnet.
3 (C) 2013 Christian Grothoff (and other contributing authors)
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6 it under the terms of the GNU General Public License as published
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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 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 "gnunet-service-mesh_tunnel.h"
46 * Struct containing all information regarding a channel to a remote client.
58 GMCH_get_id (const struct MeshChannel *ch);
61 * Get free buffer space towards the client on a specific channel.
64 * @param fwd Is query about FWD traffic?
66 * @return Free buffer space [0 - 64]
69 GMCH_get_buffer (struct MeshChannel *ch, int fwd);
72 * Send an end-to-end ACK message for the most recent in-sequence payload.
74 * If channel is not reliable, do nothing.
76 * @param ch Channel this is about.
77 * @param fwd Is for FWD traffic? (ACK dest->owner)
80 GMCH_send_ack (struct MeshChannel *ch, int fwd);
83 * Send data on a channel.
85 * If the destination is local, send it to client, otherwise encrypt and
90 * @param fwd Is this a fwd (root->dest) message?
93 GMCH_send_data (struct MeshChannel *ch,
94 const struct GNUNET_MESH_Data *msg,
98 * Notify the destination client that a new incoming channel was created.
100 * @param ch Channel that was created.
103 GMCH_send_create (struct MeshChannel *ch);
107 * Notify a client that the channel is no longer valid.
109 * @param ch Channel that is destroyed.
110 * @param fwd Forward notification (owner->dest)?
113 GMCH_send_destroy (struct MeshChannel *ch, int fwd);
122 GMCH_debug (struct MeshChannel *ch);
126 * Handler for mesh network payload traffic.
128 * @param ch Channel for the message.
129 * @param message Unencryted data message.
130 * @param fwd Is this FWD traffic? GNUNET_YES : GNUNET_NO;
133 GMCH_handle_data (struct MeshChannel *ch,
134 const struct GNUNET_MESH_Data *msg,
139 * Handler for mesh network traffic end-to-end ACKs.
141 * @param t Tunnel on which we got this message.
142 * @param message Data message.
143 * @param fwd Is this a fwd ACK? (dest->orig)
146 GMCH_handle_data_ack (struct MeshChannel *ch,
147 const struct GNUNET_MESH_DataACK *msg,
152 * Handler for channel create messages.
154 * @param t Tunnel this channel is to be created in.
155 * @param msg Message.
156 * @param fwd Is this FWD traffic? GNUNET_YES : GNUNET_NO;
159 GMCH_handle_create (const struct GNUNET_MESH_ChannelCreate *msg,
164 * Handler for channel ack messages.
166 * @param t Tunnel this channel is to be created in.
167 * @param msg Message.
168 * @param fwd Is this FWD traffic? GNUNET_YES : GNUNET_NO;
171 GMCH_handle_ack (struct MeshChannel *ch,
172 const struct GNUNET_MESH_ChannelManage *msg,
177 * Handler for channel destroy messages.
179 * @param t Tunnel this channel is to be destroyed of.
180 * @param msg Message.
181 * @param fwd Is this FWD traffic? GNUNET_YES : GNUNET_NO;
184 GMCH_handle_destroy (struct MeshChannel *ch,
185 const struct GNUNET_MESH_ChannelManage *msg,
191 * Sends an already built message on a channel, properly registering
192 * all used resources and encrypting the message with the tunnel's key.
194 * @param message Message to send. Function makes a copy of it.
195 * @param ch Channel on which this message is transmitted.
196 * @param fwd Is this a fwd message?
199 GMCH_send_prebuilt_message (const struct GNUNET_MessageHeader *message,
200 struct MeshChannel *ch, int fwd);
203 #if 0 /* keep Emacsens' auto-indent happy */
210 /* ifndef GNUNET_SERVICE_MESH_CHANNEL_H */
212 /* end of gnunet-service-mesh_channel.h */