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mirror of https://github.com/OpenVPN/openvpn3.git synced 2024-09-20 12:12:15 +02:00
openvpn3/openvpn/buffer/bufclamp.hpp
James Yonan 9b753715df Added bufclamp.hpp, a debugging tool that clamps the size
of network buffers on stream-based protocols.
2015-06-03 20:36:19 -06:00

53 lines
1.6 KiB
C++

// OpenVPN -- An application to securely tunnel IP networks
// over a single port, with support for SSL/TLS-based
// session authentication and key exchange,
// packet encryption, packet authentication, and
// packet compression.
//
// Copyright (C) 2012-2015 OpenVPN Technologies, Inc.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License Version 3
// 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
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program in the COPYING file.
// If not, see <http://www.gnu.org/licenses/>.
// For debugging, reduce effective buffer size for I/O.
// Enable by defining OPENVPN_BUF_CLAMP_READ and/or OPENVPN_BUF_CLAMP_WRITE
#ifndef OPENVPN_BUFFER_BUFCLAMP_H
#define OPENVPN_BUFFER_BUFCLAMP_H
#include <algorithm>
#include <openvpn/common/size.hpp>
namespace openvpn {
inline size_t buf_clamp_read(const size_t size)
{
#ifdef OPENVPN_BUF_CLAMP_READ
return std::min(size, size_t(OPENVPN_BUF_CLAMP_READ));
#else
return size;
#endif
}
inline size_t buf_clamp_write(const size_t size)
{
#ifdef OPENVPN_BUF_CLAMP_WRITE
return std::min(size, size_t(OPENVPN_BUF_CLAMP_WRITE));
#else
return size;
#endif
}
}
#endif