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/*
This file is part of GNUnet.
(C) 2012 Christian Grothoff (and other contributing authors)
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 3, or (at your
option) any later version.
GNUnet is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNUnet; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
/**
* @file fs/gnunet-service-fs_stream.h
* @brief non-anonymous file-transfer
* @author Christian Grothoff
*/
#ifndef GNUNET_SERVICE_FS_STREAM_H
#define GNUNET_SERVICE_FS_STREAM_H
/**
* Handle for a request that is going out via stream API.
*/
struct GSF_StreamRequest;
/**
* Function called with a reply from the stream.
*
* @param cls closure
* @param type type of the block, ANY on error
* @param expiration expiration time for the block
* @param data_size number of bytes in 'data', 0 on error
* @param data reply block data, NULL on error
*/
typedef void (*GSF_StreamReplyProcessor)(void *cls,
enum GNUNET_BLOCK_Type type,
struct GNUNET_TIME_Absolute expiration,
size_t data_size,
const void *data);
/**
* Look for a block by directly contacting a particular peer.
*
* @param target peer that should have the block
* @param query hash to query for the block
* @param type desired type for the block
* @param proc function to call with result
* @param proc_cls closure for 'proc'
* @return handle to cancel the operation
*/
struct GSF_StreamRequest *
GSF_stream_query (const struct GNUNET_PeerIdentity *target,
const struct GNUNET_HashCode *query,
enum GNUNET_BLOCK_Type type,
GSF_StreamReplyProcessor proc, void *proc_cls);
/**
* Cancel an active request; must not be called after 'proc'
* was calld.
*
* @param sr request to cancel
*/
void
GSF_stream_query_cancel (struct GSF_StreamRequest *sr);
/**
* Initialize subsystem for non-anonymous file-sharing.
*/
void
GSF_stream_start (void);
/**
* Shutdown subsystem for non-anonymous file-sharing.
*/
void
GSF_stream_stop (void);
#endif
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