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* OpenVPN -- An application to securely tunnel IP networks
* over a single TCP/UDP port, with support for SSL/TLS-based
* session authentication and key exchange,
* packet encryption, packet authentication, and
* packet compression.
* Copyright (C) 2002-2010 OpenVPN Technologies, Inc. <>
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program (see the file COPYING included with this
* distribution); if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
* UDP specific code for --mode server
#ifndef MUDP_H
#define MUDP_H
struct context;
struct multi_context;
* Main event loop wrapper function for OpenVPN in UDP server mode.
* @ingroup eventloop
* This function simply calls \c tunnel_server_udp_single_threaded().
* @param top - Top-level context structure.
void tunnel_server_udp (struct context *top);
* Get, and if necessary create, the multi_instance associated with a
* packet's source address.
* @ingroup external_multiplexer
* This function extracts the source address of a recently read packet
* from \c m->top.c2.from and uses that source address as a hash key for
* the hash table \c m->hash. If an entry exists, this function returns
* it. If no entry exists, this function handles its creation, and if
* successful, returns the newly created instance.
* @param m - The single multi_context structure.
* @return A pointer to a multi_instance if one already existed for the
* packet's source address or if one was a newly created successfully.
* NULL if one did not yet exist and a new one was not created.
struct multi_instance *multi_get_create_instance_udp (struct multi_context *m);
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