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/*
This file is part of libmicrohttpd
Copyright (C) 2007-2018 Daniel Pittman and Christian Grothoff
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file lib/daemon_ip_limit.h
* @brief counting of connections per IP
* @author Christian Grothoff
*/
#ifndef DAEMON_IP_LIMIT_H
#define DAEMON_IP_LIMIT_H
/**
* Check if IP address is over its limit in terms of the number
* of allowed concurrent connections. If the IP is still allowed,
* increments the connection counter.
*
* @param daemon handle to daemon where connection counts are tracked
* @param addr address to add (or increment counter)
* @param addrlen number of bytes in @a addr
* @return Return #MHD_YES if IP below limit, #MHD_NO if IP has surpassed limit.
* Also returns #MHD_NO if fails to allocate memory.
*/
int
MHD_ip_limit_add (struct MHD_Daemon *daemon,
const struct sockaddr *addr,
socklen_t addrlen)
MHD_NONNULL (1,2);
/**
* Decrement connection count for IP address, removing from table
* count reaches 0.
*
* @param daemon handle to daemon where connection counts are tracked
* @param addr address to remove (or decrement counter)
* @param addrlen number of bytes in @a addr
*/
void
MHD_ip_limit_del (struct MHD_Daemon *daemon,
const struct sockaddr *addr,
socklen_t addrlen)
MHD_NONNULL (1,2);
#endif
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