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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#ifndef AUTOHOST_INTERFACE_H
#define AUTOHOST_INTERFACE_H
#include <string>
#include <boost/cstdint.hpp>
#include <boost/asio/ip/udp.hpp>
/**
* API for engine <-> autohost (or similar) communication, using UDP over
* loopback.
*/
class AutohostInterface
{
public:
typedef unsigned char uchar;
/**
* @brief Connects to a port on localhost
* @param remoteIP IP of the autohost to connect to
* @param remotePort the port where the autohost runs its
* communication-with-engine service
* @param localIP the local IP to use in the connection,
* use "" to use the any IP
* @param localPort the local port to use in the connection,
* use 0 for OS-select
*/
AutohostInterface(const std::string& remoteIP, int remotePort,
const std::string& localIP = "", int localPort = 0);
virtual ~AutohostInterface();
bool IsInitialized() const { return initialized; }
void SendStart();
void SendQuit();
void SendStartPlaying();
void SendGameOver(uchar playerNum, const std::vector<uchar>& winningAllyTeams);
void SendPlayerJoined(uchar playerNum, const std::string& name);
void SendPlayerLeft(uchar playerNum, uchar reason);
void SendPlayerReady(uchar playerNum, uchar readyState);
void SendPlayerChat(uchar playerNum, uchar destination, const std::string& msg);
void SendPlayerDefeated(uchar playerNum);
void Message(const std::string& message);
void Warning(const std::string& message);
void SendLuaMsg(const boost::uint8_t* msg, size_t msgSize);
void Send(const boost::uint8_t* msg, size_t msgSize);
/**
* @brief Receive a chat message from the autohost
* There should be only 1 message per UDP-Packet, and it will use the hosts
* playernumber to inject this message
*/
std::string GetChatMessage();
private:
void Send(boost::asio::mutable_buffers_1 sendBuffer);
/**
* Tries to bind a socket for communication with a UDP server.
* @param socket socket to bind
* @param remoteIP IP of the remote host to connect to
* @param remotePort the port where the remote host runs its
* UDP service
* @param localIP the local IP to use in the connection,
* use "" to use the any IP
* @param localPort the local port to use in the connection,
* use 0 for OS-select
* @return "" if everything went OK, and error description otherwise
*/
static std::string TryBindSocket(boost::asio::ip::udp::socket& socket,
const std::string& remoteIP, int remotePort,
const std::string& localIP = "", int localPort = 0);
boost::asio::ip::udp::socket autohost;
bool initialized;
};
#endif // AUTOHOST_INTERFACE_H
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