Drone(const std::string& address, boost::asio::io_service& ios) : Pitch_(0.0), Roll_(0.0), Yaw_(0.0), H_(0.0), ios_(ios),
remote_(boost::asio::ip::address::from_string(address), 7777) ,
socket_(ios_)
{
socket_.connect(remote_);
}
std::string AutohostInterface::TryBindSocket(
boost::asio::ip::udp::socket& socket,
const std::string& remoteIP, int remotePort,
const std::string& localIP, int localPort)
{
std::string errorMsg = "";
ip::address localAddr;
ip::address remoteAddr;
boost::system::error_code err;
try {
socket.open(ip::udp::v6(), err); // test IP v6 support
const bool supportsIPv6 = !err;
remoteAddr = netcode::WrapIP(remoteIP, &err);
if (err) {
throw std::runtime_error("Failed to parse address " + remoteIP + ": " + err.message());
}
if (!supportsIPv6 && remoteAddr.is_v6()) {
throw std::runtime_error("IP v6 not supported, can not use address " + remoteAddr.to_string());
}
if (localIP.empty()) {
// use the "any" address as local "from"
if (remoteAddr.is_v6()) {
localAddr = ip::address_v6::any();
} else {
if (supportsIPv6) {
socket.close();
}
socket.open(ip::udp::v4());
localAddr = ip::address_v4::any();
}
} else {
localAddr = netcode::WrapIP(localIP, &err);
if (err) {
throw std::runtime_error("Failed to parse local IP " + localIP + ": " + err.message());
}
if (localAddr.is_v6() != remoteAddr.is_v6()) {
throw std::runtime_error("Local IP " + localAddr.to_string() + " and remote IP " + remoteAddr.to_string() + " are IP v4/v6 mixed");
}
}
socket.bind(ip::udp::endpoint(localAddr, localPort));
boost::asio::socket_base::non_blocking_io command(true);
socket.io_control(command);
// A similar, slighly less verbose message is already in GameServer
//LogObject() << "[AutohostInterface] Connecting (UDP) to IP "
// << (remoteAddr.is_v6() ? "(v6)" : "(v4)") << " " << remoteAddr
// << " Port " << remotePort;
socket.connect(ip::udp::endpoint(remoteAddr, remotePort));
} catch (std::runtime_error& e) { // includes also boost::system::system_error, as it inherits from runtime_error
socket.close();
errorMsg = e.what();
if (errorMsg.empty()) {
errorMsg = "Unknown problem";
}
}
return errorMsg;
}