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https://gitea.wildfiregames.com/0ad/0ad
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157c6af18e
Avoid cases of filenames Update years in terms and other legal(ish) documents Don't update years in license headers, since change is not meaningful Will add linter rule in seperate commit Happy recompiling everyone! Original Patch By: Nescio Comment By: Gallaecio Differential Revision: D2620 This was SVN commit r27786.
62 lines
1.9 KiB
C++
62 lines
1.9 KiB
C++
/* Copyright (C) 2023 Wildfire Games.
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* This file is part of 0 A.D.
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*
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* 0 A.D. is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* 0 A.D. is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "precompiled.h"
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#include "NetEnet.h"
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#include "ps/ConfigDB.h"
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#include "ps/containers/Span.h"
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namespace PS
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{
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namespace Enet
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{
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// ENet protocol MTU
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// ENet by default uses 1400 as ENet packet fragment max size, adding ICMP and
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// IPv4 headers this may exceed the MTU for some VPN solutions [1], so provide
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// a lower default.
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// MTU negotiation server-side needs [2], which was merged after enet-1.3.17,
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// so the user configured value may be ignored on older versions.
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// [1] https://github.com/lsalzman/enet/issues/132
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// [2] https://github.com/lsalzman/enet/pull/222
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constexpr enet_uint32 HOST_DEFAULT_MTU = 1372;
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ENetHost* CreateHost(const ENetAddress* address, size_t peerCount, size_t channelLimit)
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{
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// TODO: Maybe allow user to set rate limits?
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ENetHost* host = enet_host_create(address, peerCount, channelLimit, 0, 0);
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if (!host)
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return nullptr;
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// Public ENet API doesn't offer a means to change MTU, so do it in a
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// way least likely to break with ENet updates.
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enet_uint32 mtu = HOST_DEFAULT_MTU;
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CFG_GET_VAL("network.enetmtu", mtu);
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host->mtu = mtu;
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for (ENetPeer& p : PS::span{host->peers, host->peerCount})
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enet_peer_reset(&p);
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return host;
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}
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} // namespace Enet
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} // namespace PS
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