100 lines
4.0 KiB
C++
100 lines
4.0 KiB
C++
#include "multiplex_manager.h"
|
||
#include <iostream>
|
||
#include <cstring>
|
||
|
||
MultiplexManager::MultiplexManager(ISteamNetworkingSockets* steamInterface, HSteamNetConnection steamConn,
|
||
boost::asio::io_context& io_context, bool& isHost, int& localPort)
|
||
: steamInterface_(steamInterface), steamConn_(steamConn), nextId_(1),
|
||
io_context_(io_context), isHost_(isHost), localPort_(localPort) {}
|
||
|
||
MultiplexManager::~MultiplexManager() {
|
||
// Close all sockets
|
||
std::lock_guard<std::mutex> lock(mapMutex_);
|
||
for (auto& pair : clientMap_) {
|
||
pair.second->close();
|
||
}
|
||
clientMap_.clear();
|
||
}
|
||
|
||
uint32_t MultiplexManager::addClient(std::shared_ptr<tcp::socket> socket) {
|
||
std::lock_guard<std::mutex> lock(mapMutex_);
|
||
uint32_t id = nextId_++;
|
||
clientMap_[id] = socket;
|
||
return id;
|
||
}
|
||
|
||
void MultiplexManager::removeClient(uint32_t id) {
|
||
std::lock_guard<std::mutex> lock(mapMutex_);
|
||
auto it = clientMap_.find(id);
|
||
if (it != clientMap_.end()) {
|
||
it->second->close();
|
||
clientMap_.erase(it);
|
||
}
|
||
}
|
||
|
||
std::shared_ptr<tcp::socket> MultiplexManager::getClient(uint32_t id) {
|
||
std::lock_guard<std::mutex> lock(mapMutex_);
|
||
auto it = clientMap_.find(id);
|
||
if (it != clientMap_.end()) {
|
||
return it->second;
|
||
}
|
||
return nullptr;
|
||
}
|
||
|
||
void MultiplexManager::sendTunnelPacket(uint32_t id, const char* data, size_t len, int type) {
|
||
// Packet format: uint32_t id, uint32_t type, then data if type==0
|
||
size_t packetSize = sizeof(uint32_t) * 2 + (type == 0 ? len : 0);
|
||
std::vector<char> packet(packetSize);
|
||
uint32_t* pId = reinterpret_cast<uint32_t*>(&packet[0]);
|
||
uint32_t* pType = reinterpret_cast<uint32_t*>(&packet[sizeof(uint32_t)]);
|
||
*pId = id;
|
||
*pType = type;
|
||
if (type == 0 && data) {
|
||
std::memcpy(&packet[sizeof(uint32_t) * 2], data, len);
|
||
}
|
||
steamInterface_->SendMessageToConnection(steamConn_, packet.data(), packet.size(), k_nSteamNetworkingSend_Reliable, nullptr);
|
||
}
|
||
|
||
void MultiplexManager::handleTunnelPacket(const char* data, size_t len) {
|
||
if (len < sizeof(uint32_t) * 2) {
|
||
std::cerr << "Invalid tunnel packet size" << std::endl;
|
||
return;
|
||
}
|
||
uint32_t id = *reinterpret_cast<const uint32_t*>(data);
|
||
uint32_t type = *reinterpret_cast<const uint32_t*>(data + sizeof(uint32_t));
|
||
if (type == 0) {
|
||
// Data packet
|
||
size_t dataLen = len - sizeof(uint32_t) * 2;
|
||
const char* packetData = data + sizeof(uint32_t) * 2;
|
||
auto socket = getClient(id);
|
||
if (!socket && isHost_ && localPort_ > 0) {
|
||
// 如果是主持且没有对应的 TCP Client，创建一个连接到本地端口
|
||
std::cout << "Creating new TCP client for id " << id << " connecting to localhost:" << localPort_ << std::endl;
|
||
try {
|
||
auto newSocket = std::make_shared<tcp::socket>(io_context_);
|
||
tcp::resolver resolver(io_context_);
|
||
auto endpoints = resolver.resolve("127.0.0.1", std::to_string(localPort_));
|
||
boost::asio::connect(*newSocket, endpoints);
|
||
|
||
std::lock_guard<std::mutex> lock(mapMutex_);
|
||
clientMap_[id] = newSocket;
|
||
socket = newSocket;
|
||
std::cout << "Successfully created TCP client for id " << id << std::endl;
|
||
} catch (const std::exception& e) {
|
||
std::cerr << "Failed to create TCP client for id " << id << ": " << e.what() << std::endl;
|
||
return;
|
||
}
|
||
}
|
||
if (socket) {
|
||
boost::asio::async_write(*socket, boost::asio::buffer(packetData, dataLen), [](const boost::system::error_code&, std::size_t) {});
|
||
} else {
|
||
std::cerr << "No client found for id " << id << std::endl;
|
||
}
|
||
} else if (type == 1) {
|
||
// Disconnect packet
|
||
removeClient(id);
|
||
std::cout << "Client " << id << " disconnected" << std::endl;
|
||
} else {
|
||
std::cerr << "Unknown packet type " << type << std::endl;
|
||
}
|
||
} |