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Packet.cpp
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Packet.cpp
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// @Begin License@
// This file is part of Coldest.
//
// Coldest 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 of the License, or
// (at your option) any later version.
//
// Coldest 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 Coldest. If not, see <http://www.gnu.org/licenses/>.
//
// Copyright 2008-2012 Ben Nemec
// @End License@
#include "Packet.h"
using std::endl;
int Packet::laghax = 0;
Packet::Packet(IPaddress* inaddr) : ack(0),
attempts(0), lastsent(0), sendinterval(100)
{
if (inaddr)
addr = *inaddr;
else addr.host = INADDR_NONE;
sendtick = SDL_GetTicks() + laghax;
}
Packet::Packet(IPaddress* inaddr, const string type, const unsigned long num, const bool needack) :
ack(0),
attempts(0),
lastsent(0),
sendinterval(100)
{
if (inaddr)
addr = *inaddr;
else addr.host = INADDR_NONE;
sendtick = SDL_GetTicks() + laghax;
*this << type << eol;
*this << num << eol;
if (needack)
ack = num;
}
size_t Packet::Send(UDPpacket* packet, UDPsocket& socket)
{
if (!packet)
{
logout << "Send Error: null packet" << endl;
return 0;
}
Uint32 currtick = SDL_GetTicks();
if (currtick - lastsent < sendinterval) // Don't swamp the receiver with ack packets
return 0;
lastsent = currtick;
packet->address = addr;
strcpy((char*)packet->data, data.c_str());
packet->len = data.length() + 1;
SDLNet_UDP_Send(socket, -1, packet);
++attempts;
return data.length();
}