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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#include "LocalConnection.h"
#include <boost/format.hpp>
#include "Exception.h"
#include "ProtocolDef.h"
#include "System/Log/ILog.h"
namespace netcode {
// static stuff
unsigned CLocalConnection::instances = 0;
std::deque< boost::shared_ptr<const RawPacket> > CLocalConnection::Data[2];
boost::mutex CLocalConnection::Mutex[2];
CLocalConnection::CLocalConnection()
{
if (instances > 1) {
throw network_error("Opening a third local connection is not allowed");
}
instance = instances;
instances++;
}
CLocalConnection::~CLocalConnection()
{
instances--;
}
void CLocalConnection::SendData(boost::shared_ptr<const RawPacket> data)
{
if (!ProtocolDef::GetInstance()->IsValidPacket(data->data, data->length)) {
// having this check here makes it easier to find networking bugs
// also when testing locally
LOG_L(L_ERROR, "Discarding invalid packet: ID %d, LEN %d",
(data->length > 0) ? (int)data->data[0] : -1, data->length);
return;
}
dataSent += data->length;
boost::mutex::scoped_lock scoped_lock(Mutex[OtherInstance()]);
Data[OtherInstance()].push_back(data);
}
boost::shared_ptr<const RawPacket> CLocalConnection::Peek(unsigned ahead) const
{
boost::mutex::scoped_lock scoped_lock(Mutex[instance]);
if (ahead < Data[instance].size())
return Data[instance][ahead];
else
{
boost::shared_ptr<const RawPacket> empty;
return empty;
}
}
void CLocalConnection::DeleteBufferPacketAt(unsigned index)
{
boost::mutex::scoped_lock scoped_lock(Mutex[instance]);
if (index < Data[instance].size())
Data[instance].erase(Data[instance].begin() + index);
}
boost::shared_ptr<const RawPacket> CLocalConnection::GetData()
{
boost::mutex::scoped_lock scoped_lock(Mutex[instance]);
if (!Data[instance].empty()) {
boost::shared_ptr<const RawPacket> next = Data[instance].front();
Data[instance].pop_front();
dataRecv += next->length;
return next;
} else {
boost::shared_ptr<const RawPacket> empty;
return empty;
}
}
void CLocalConnection::Flush(const bool forced)
{
}
bool CLocalConnection::CheckTimeout(int seconds, bool initial) const
{
return false;
}
bool CLocalConnection::CanReconnect() const
{
return false;
}
bool CLocalConnection::NeedsReconnect()
{
return false;
}
std::string CLocalConnection::Statistics() const
{
std::string msg = "Statistics for local connection:\n";
msg += str( boost::format("Received: %1% bytes\n") %dataRecv );
msg += str( boost::format("Sent: %1% bytes\n") %dataSent );
return msg;
}
std::string CLocalConnection::GetFullAddress() const
{
return "shared memory";
}
bool CLocalConnection::HasIncomingData() const
{
boost::mutex::scoped_lock scoped_lock(Mutex[instance]);
return (!Data[instance].empty());
}
unsigned CLocalConnection::OtherInstance() const
{
if (instance == 0) {
return 1;
} else {
return 0;
}
}
} // namespace netcode
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