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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#ifndef _LOCAL_CONNECTION_H
#define _LOCAL_CONNECTION_H
#include <deque>
#include "System/Threading/SpringThreading.h"
#include "Connection.h"
namespace netcode {
/**
* @brief Class for local connection between server / client
* Directly connects the respective input-buffers, to increase performance.
* The server and the client have to run in one instance (same process)
* of spring for this to work.
* Otherwise, a normal UDP connection had to be used.
* IMPORTANT: You must not have more than two instances of this.
*/
class CLocalConnection : public CConnection
{
public:
/**
* @brief Constructor
* @throw network_error When there already 2 instances
*/
CLocalConnection();
~CLocalConnection();
// START overriding CConnection
void SendData(std::shared_ptr<const RawPacket> pkt) override;
bool HasIncomingData() const override;
std::shared_ptr<const RawPacket> Peek(unsigned ahead) const override;
std::shared_ptr<const RawPacket> GetData() override;
void DeleteBufferPacketAt(unsigned index) override;
void Flush(const bool forced) override {}
bool CheckTimeout(int seconds, bool initial) const override { return false; }
void ReconnectTo(CConnection& conn) override {}
bool CanReconnect() const override { return false; }
bool NeedsReconnect() override { return false; }
void Unmute() override {}
void Close(bool flush) override;
void SetLossFactor(int factor) override {}
unsigned int GetPacketQueueSize() const override;
std::string Statistics() const override;
std::string GetFullAddress() const override { return "Localhost"; }
// END overriding CConnection
private:
static constexpr unsigned int MAX_INSTANCES = 2;
static std::deque< std::shared_ptr<const RawPacket> > pktQueues[MAX_INSTANCES];
static spring::mutex mutexes[MAX_INSTANCES];
static CLocalConnection* instancePtrs[MAX_INSTANCES];
unsigned int RemoteInstanceIdx() const { return ((instanceIdx + 1) % MAX_INSTANCES); }
/// we can have two instances, one in GameServer and one in NetProtocol
/// (first instance represents server->client and second client->server)
static unsigned int numInstances;
/// which instance we are
unsigned int instanceIdx;
};
} // namespace netcode
#endif // _LOCAL_CONNECTION_H
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