搭建代码框架并更新文档

core/src/network/nat_traversal/candidate.cpp

@@ -0,0 +1,34 @@
+#include "displayflow/core/network/nat_traversal/candidate.h"
+
+namespace displayflow {
+namespace core {
+
+uint32_t CalculateCandidatePriority(const Candidate& candidate) {
+    // 根据 RFC 8445 计算候选地址优先级
+    // priority = (2^24) * (type preference) + (2^8) * (local preference) + (2^0) * (component ID)
+    
+    uint32_t typePreference = 0;
+    switch (candidate.type) {
+        case CandidateType::Host:
+            typePreference = 126;  // 最高优先级
+            break;
+        case CandidateType::ServerReflexive:
+            typePreference = 100;
+            break;
+        case CandidateType::PeerReflexive:
+            typePreference = 110;
+            break;
+        case CandidateType::Relayed:
+            typePreference = 0;  // 最低优先级
+            break;
+    }
+    
+    uint32_t localPreference = 65535;  // 默认值
+    uint32_t componentId = 1;  // 默认值
+    
+    return (typePreference << 24) | (localPreference << 8) | componentId;
+}
+
+} // namespace core
+} // namespace displayflow
+

core/src/network/nat_traversal/ice_agent.cpp

@@ -0,0 +1,69 @@
+#include "displayflow/core/network/nat_traversal/ice_agent.h"
+
+namespace displayflow {
+namespace core {
+
+IceAgent::IceAgent() {
+    // TODO: 实现构造函数
+}
+
+IceAgent::~IceAgent() {
+    // TODO: 实现析构函数
+}
+
+bool IceAgent::Initialize(const IceConfig& config) {
+    config_ = config;
+    stunClient_.SetServer(config.stunServer);
+    turnClient_.SetServer(config.turnServer);
+    return true;
+}
+
+std::vector<Candidate> IceAgent::GatherCandidates() {
+    // TODO: 实现收集候选地址
+    // 1. 收集本地网络接口地址
+    // 2. 通过 STUN 获取服务器反射地址
+    // 3. 通过 TURN 获取中继地址
+    return {};
+}
+
+void IceAgent::SetRemoteCandidates(const std::vector<Candidate>& candidates) {
+    remoteCandidates_ = candidates;
+}
+
+bool IceAgent::PerformConnectivityChecks() {
+    // TODO: 实现连接检查
+    // 1. 生成候选地址对
+    // 2. 按优先级排序
+    // 3. 执行连接检查
+    // 4. 选择最佳路径
+    return false;
+}
+
+IceCandidatePair IceAgent::GetSelectedPair() const {
+    return selectedPair_;
+}
+
+std::string IceAgent::GetConnectionType() const {
+    if (selectedPair_.valid) {
+        switch (selectedPair_.local.type) {
+            case CandidateType::Host:
+                return "local";
+            case CandidateType::ServerReflexive:
+                return "stun";
+            case CandidateType::Relayed:
+                return "turn";
+            default:
+                return "unknown";
+        }
+    }
+    return "unknown";
+}
+
+void IceAgent::Cleanup() {
+    // TODO: 实现清理逻辑
+    turnClient_.ReleaseAllocation();
+}
+
+} // namespace core
+} // namespace displayflow
+

core/src/network/nat_traversal/nat_type.cpp

@@ -0,0 +1,32 @@
+#include "displayflow/core/network/nat_traversal/nat_type.h"
+
+namespace displayflow {
+namespace core {
+
+const char* NatTypeToString(NatType type) {
+    switch (type) {
+        case NatType::Unknown:
+            return "Unknown";
+        case NatType::Open:
+            return "Open";
+        case NatType::FullCone:
+            return "Full Cone";
+        case NatType::RestrictedCone:
+            return "Restricted Cone";
+        case NatType::PortRestrictedCone:
+            return "Port Restricted Cone";
+        case NatType::Symmetric:
+            return "Symmetric";
+        default:
+            return "Unknown";
+    }
+}
+
+bool IsNatTypeDirectConnectable(NatType type) {
+    // 只有开放和完全锥形 NAT 可以直接连接
+    return type == NatType::Open || type == NatType::FullCone;
+}
+
+} // namespace core
+} // namespace displayflow
+

core/src/network/nat_traversal/stun_client.cpp

@@ -0,0 +1,37 @@
+#include "displayflow/core/network/nat_traversal/stun_client.h"
+
+namespace displayflow {
+namespace core {
+
+StunClient::StunClient() {
+    // TODO: 实现构造函数
+}
+
+StunClient::~StunClient() {
+    // TODO: 实现析构函数
+}
+
+void StunClient::SetServer(const StunServerConfig& config) {
+    serverConfig_ = config;
+}
+
+StunResponse StunClient::PerformBindingRequest(uint16_t localPort) {
+    // TODO: 实现 STUN 绑定请求
+    StunResponse response;
+    response.success = false;
+    return response;
+}
+
+NatType StunClient::DetectNatType() {
+    // TODO: 实现 NAT 类型检测
+    return NatType::Unknown;
+}
+
+std::string StunClient::GetPublicIp() {
+    // TODO: 实现获取公网 IP
+    return "";
+}
+
+} // namespace core
+} // namespace displayflow
+

core/src/network/nat_traversal/turn_client.cpp

@@ -0,0 +1,47 @@
+#include "displayflow/core/network/nat_traversal/turn_client.h"
+
+namespace displayflow {
+namespace core {
+
+TurnClient::TurnClient() {
+    // TODO: 实现构造函数
+}
+
+TurnClient::~TurnClient() {
+    // TODO: 实现析构函数
+}
+
+void TurnClient::SetServer(const TurnServerConfig& config) {
+    serverConfig_ = config;
+}
+
+Candidate TurnClient::AllocateRelayAddress() {
+    // TODO: 实现分配中继地址
+    Candidate candidate;
+    candidate.type = CandidateType::Relayed;
+    return candidate;
+}
+
+bool TurnClient::CreatePermission(const std::string& peerIp) {
+    // TODO: 实现创建权限
+    return false;
+}
+
+bool TurnClient::SendData(const ByteArray& data, const std::string& peerIp, uint16_t peerPort) {
+    // TODO: 实现发送数据
+    return false;
+}
+
+bool TurnClient::ReceiveData(ByteArray& data, std::string& peerIp, uint16_t& peerPort) {
+    // TODO: 实现接收数据
+    return false;
+}
+
+void TurnClient::ReleaseAllocation() {
+    // TODO: 实现释放分配
+    allocated_ = false;
+}
+
+} // namespace core
+} // namespace displayflow
+

core/src/network/network_interface.cpp

@@ -0,0 +1,11 @@
+#include "displayflow/core/network/network_interface.h"
+
+namespace displayflow {
+namespace core {
+
+// NetworkInterface 结构体实现
+// 目前只有头文件定义，此文件保留用于未来扩展
+
+} // namespace core
+} // namespace displayflow
+

core/src/network/network_manager.cpp

@@ -0,0 +1,35 @@
+#include "displayflow/core/network/network_manager.h"
+
+namespace displayflow {
+namespace core {
+
+NetworkManager::NetworkManager() {
+    // TODO: 实现构造函数
+}
+
+NetworkManager::~NetworkManager() {
+    // TODO: 实现析构函数
+}
+
+bool NetworkManager::Initialize() {
+    // TODO: 实现初始化逻辑
+    return false;
+}
+
+std::vector<NetworkInterface> NetworkManager::GetAvailableInterfaces() {
+    // TODO: 实现获取可用网络接口
+    return {};
+}
+
+bool NetworkManager::Connect(const NetworkInterface& interface) {
+    // TODO: 实现连接逻辑
+    return false;
+}
+
+void NetworkManager::Disconnect() {
+    // TODO: 实现断开连接逻辑
+}
+
+} // namespace core
+} // namespace displayflow
+