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/*
net/netclient.cc
This file is part of the Osirion project and is distributed under
the terms of the GNU General Public License version 2
*/
#include <iostream>
#include <sstream>
#include "sys/sys.h"
#include "core/net.h"
#include "core/application.h"
#include "core/stats.h"
namespace core
{
NetClient::NetClient(std::string host, int port) :
client_host(host)
{
client_error = true;
client_state = Connecting;
con_print << host << ":" << port << " connected." << std::endl;
client_host = host;
client_port = port;
client_addr.sin_family = AF_INET;
client_addr.sin_port = htons(port);
client_addr.sin_addr.s_addr = inet_addr(host.c_str());
memset(client_addr.sin_zero, '\0', sizeof(client_addr.sin_zero));
if (client_addr.sin_addr.s_addr == INADDR_NONE) {
con_warn << "Network invalid client address " << host << "!" << std::endl;
abort();
return;
}
sendq.clear();
messageblock.clear();
client_keepalive = application()->time();
client_timeout = application()->time();
client_error = false;
}
NetClient::~NetClient()
{
con_print << host() << ":" << port() << " disconnected." << std::endl;
}
void NetClient::abort()
{
client_error = true;
}
std::string NetClient::host() const
{
return client_host;
}
int NetClient::port() const
{
return client_port;
}
Player *NetClient::player()
{
return &client_player;
}
bool NetClient::has_messages() const {
return (recvq.size() > 0 );
}
void NetClient::retreive(std::string & message) {
if (recvq.size() > 0 ) {
message.assign(recvq.front());
recvq.pop_front();
} else {
message.clear();
}
}
// receive data and decode it into lines
void NetClient::receive(char *data)
{
std::string datablock;
datablock.assign(data);
if (!datablock.size())
return;
while(datablock.size() > 0 ) {
// scan the datablock for enters
if (datablock[0] == '\n' || datablock[0] == '\r') {
// TODO detect "begin binary block" message for zlib compression
if (messageblock.size() > 0 ) {
recvq.push_back(messageblock);
messageblock.clear();
}
} else {
if (messageblock.size() < FRAMESIZE) {
messageblock.append(datablock.substr(0,1));
} else {
con_warn << "Incoming message exceeds " << FRAMESIZE << " bytes!\n";
messageblock.clear();
}
}
datablock.erase(0,1);
}
client_timeout = application()->time();
}
void NetClient::send(std::string const &msg)
{
sendq.append(msg);
}
void NetClient::transmit(int serverfd)
{
if (!sendq.size()) {
if (client_keepalive + NETTIMEOUT/2 < application()->time()) {
sendq.assign("ping\n");
} else {
return;
}
} else if (sendq.size() >= FRAMESIZE) {
con_warn << "Outgoing message exceeds " << FRAMESIZE -1 << " bytes!\n";
//sendq.clear();
//return;
}
ssize_t bytes_sent = 0;
while (sendq.size() && !error()) {
bytes_sent = ::sendto(serverfd, sendq.c_str(), sendq.size()+1, 0,
(struct sockaddr *)&client_addr, sizeof(client_addr));
if (bytes_sent < 0) {
abort();
return;
}
sendq.erase(0, bytes_sent);
Stats::network_bytes_sent += bytes_sent;
}
sendq.clear();
client_keepalive = application()->time();
}
}
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