102 lines
2.7 KiB
C++
102 lines
2.7 KiB
C++
#include <STDInclude.hpp>
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namespace Components
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{
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bool Discovery::IsTerminating = false;
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bool Discovery::IsPerforming = false;
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std::thread Discovery::Thread;
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std::string Discovery::Challenge;
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Dvar::Var Discovery::NetDiscoveryPortRangeMin;
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Dvar::Var Discovery::NetDiscoveryPortRangeMax;
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void Discovery::Perform()
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{
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IsPerforming = true;
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}
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Discovery::Discovery()
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{
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NetDiscoveryPortRangeMin = Dvar::Register<int>("net_discoveryPortRangeMin", 25000, 0, 65535, Game::DVAR_NONE, "Minimum scan range port for local server discovery");
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NetDiscoveryPortRangeMax = Dvar::Register<int>("net_discoveryPortRangeMax", 35000, 1, 65536, Game::DVAR_NONE, "Maximum scan range port for local server discovery");
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// An additional thread prevents lags
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// Not sure if that's the best way though
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IsPerforming = false;
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IsTerminating = false;
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Thread = std::thread([]
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{
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while (!IsTerminating)
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{
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if (IsPerforming)
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{
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const auto start = Game::Sys_Milliseconds();
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Logger::Print("Starting local server discovery...\n");
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Challenge = Utils::Cryptography::Rand::GenerateChallenge();
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const auto minPort = NetDiscoveryPortRangeMin.get<unsigned int>();
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const auto maxPort = NetDiscoveryPortRangeMax.get<unsigned int>();
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Network::BroadcastRange(minPort, maxPort, std::format("discovery {}", Challenge));
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Logger::Print("Discovery sent within {}ms, awaiting responses...\n", Game::Sys_Milliseconds() - start);
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IsPerforming = false;
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}
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std::this_thread::sleep_for(50ms);
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}
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});
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Network::OnClientPacket("discovery", [](Network::Address& address, [[maybe_unused]] const std::string& data)
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{
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if (address.isSelf()) return;
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if (!address.isLocal())
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{
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Logger::Print("Received discovery request from non-local address: {}\n", address.getString());
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return;
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}
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Logger::Print("Received discovery request from {}\n", address.getString());
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Network::SendCommand(address, "discoveryResponse", data);
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});
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Network::OnClientPacket("discoveryResponse", [](Network::Address& address, [[maybe_unused]] const std::string& data)
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{
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if (address.isSelf()) return;
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if (!address.isLocal())
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{
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Logger::Print("Received discovery response from non-local address: {}\n", address.getString());
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return;
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}
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if (Utils::ParseChallenge(data) != Challenge)
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{
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Logger::Print("Received discovery with invalid challenge from: {}\n", address.getString());
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return;
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}
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Logger::Print("Received discovery response from: {}\n", address.getString());
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if (ServerList::IsOfflineList())
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{
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ServerList::InsertRequest(address);
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}
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});
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}
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void Discovery::preDestroy()
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{
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IsPerforming = false;
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IsTerminating = true;
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if (Thread.joinable())
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{
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Thread.join();
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}
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}
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}
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