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557 lines
25 KiB
C#
557 lines
25 KiB
C#
using linker.tunnel.connection;
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using linker.tunnel.transport;
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using linker.libs;
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using linker.libs.extends;
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using System.Collections.Concurrent;
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using System.Net.Sockets;
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using System.Net;
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using linker.tunnel.wanport;
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using System.Security.Cryptography.X509Certificates;
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namespace linker.tunnel
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{
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public sealed class TunnelTransfer
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{
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/// <summary>
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/// 本机局域网IP，当然你也可以使用0.0.0.0，但是使用局域网IP会提高打洞成功率
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/// </summary>
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public Func<IPAddress> LocalIP { get; set; } = () => IPAddress.Any;
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/// <summary>
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/// 服务器地址
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/// </summary>
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public Func<IPEndPoint> ServerHost { get; set; } = () => new IPEndPoint(IPAddress.Any, 0);
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/// <summary>
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/// ssl加密证书，没有证书则无法加密通信
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/// </summary>
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public Func<X509Certificate2> Certificate { get; set; } = () => null;
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/// <summary>
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/// 获取打洞协议列表
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/// </summary>
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/// <returns></returns>
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public Func<List<TunnelTransportItemInfo>> GetTunnelTransports { get; set; } = () => new List<TunnelTransportItemInfo>();
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/// <summary>
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/// 保存打洞协议列表
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/// </summary>
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/// <param name="transports"></param>
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public Action<List<TunnelTransportItemInfo>, bool> SetTunnelTransports { get; set; } = (list, update) => { };
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/// <summary>
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/// 获取本地网络信息
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/// </summary>
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/// <returns></returns>
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public Func<NetworkInfo> GetLocalConfig { get; set; } = () => new NetworkInfo();
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/// <summary>
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/// 获取远端的外网信息，比如你是A，你要获取B的信息，可以在B调用 TunnelTransfer.GetWanPort() 发送回来
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/// </summary>
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public Func<TunnelWanPortProtocolInfo, Task<TunnelTransportWanPortInfo>> GetRemoteWanPort { get; set; } = async (info) => { return await Task.FromResult(new TunnelTransportWanPortInfo()); };
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/// <summary>
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/// 发送开始打洞
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/// </summary>
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public Func<TunnelTransportInfo, Task<bool>> SendConnectBegin { get; set; } = async (info) => { return await Task.FromResult(false); };
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/// <summary>
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/// 发送打洞失败
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/// </summary>
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public Func<TunnelTransportInfo, Task<bool>> SendConnectFail { get; set; } = async (info) => { return await Task.FromResult(false); };
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/// <summary>
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/// 发送打洞成功
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/// </summary>
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public Func<TunnelTransportInfo, Task<bool>> SendConnectSuccess { get; set; } = async (info) => { return await Task.FromResult(false); };
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private List<ITunnelTransport> transports;
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private TunnelWanPortTransfer tunnelWanPortTransfer;
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private TunnelUpnpTransfer TunnelUpnpTransfer;
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private ConcurrentDictionary<string, bool> connectingDic = new ConcurrentDictionary<string, bool>();
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private uint flowid = 1;
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private Dictionary<string, List<Action<ITunnelConnection>>> OnConnected { get; } = new Dictionary<string, List<Action<ITunnelConnection>>>();
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public TunnelTransfer()
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{
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}
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/// <summary>
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/// 加载打洞协议
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/// </summary>
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/// <param name="assembs"></param>
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public void LoadTransports(TunnelWanPortTransfer tunnelWanPortTransfer, TunnelUpnpTransfer TunnelUpnpTransfer, List<ITunnelTransport> transports)
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{
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this.tunnelWanPortTransfer = tunnelWanPortTransfer;
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this.transports = transports;
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this.TunnelUpnpTransfer = TunnelUpnpTransfer;
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foreach (var item in transports)
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{
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item.OnSendConnectBegin = SendConnectBegin;
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item.OnSendConnectFail = SendConnectFail;
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item.OnSendConnectSuccess = SendConnectSuccess;
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item.OnConnected = _OnConnected;
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item.SetSSL(Certificate());
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}
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var transportItems = GetTunnelTransports();
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//有新的协议
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var newTransportNames = transports.Select(c => c.Name).Except(transportItems.Select(c => c.Name));
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if (newTransportNames.Any())
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{
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transportItems.AddRange(transports.Where(c => newTransportNames.Contains(c.Name)).Select(c => new TunnelTransportItemInfo
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{
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Label = c.Label,
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Name = c.Name,
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ProtocolType = c.ProtocolType.ToString(),
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Reverse = c.Reverse,
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DisableReverse = c.DisableReverse,
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SSL = c.SSL,
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DisableSSL = c.DisableSSL,
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Order = c.Order
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}));
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}
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//有已移除的协议
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var oldTransportNames = transportItems.Select(c => c.Name).Except(transports.Select(c => c.Name));
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if (oldTransportNames.Any())
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{
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foreach (var item in transportItems.Where(c => oldTransportNames.Contains(c.Name)))
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{
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transportItems.Remove(item);
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}
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}
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//强制更新一些信息
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foreach (var item in transportItems)
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{
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var transport = transports.FirstOrDefault(c => c.Name == item.Name);
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if (transport != null)
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{
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item.DisableReverse = transport.DisableReverse;
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item.DisableSSL = transport.DisableSSL;
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item.Name = transport.Name;
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item.Label = transport.Label;
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if (transport.DisableReverse)
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{
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item.Reverse = transport.Reverse;
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}
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if (transport.DisableSSL)
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{
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item.SSL = transport.SSL;
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}
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if (item.Order == 0)
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{
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item.Order = transport.Order;
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}
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}
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}
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SetTunnelTransports(transportItems, true);
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LoggerHelper.Instance.Info($"load tunnel transport:{string.Join(",", transports.Select(c => c.Name))}");
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}
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/// <summary>
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/// 设置成功打洞回调
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/// </summary>
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/// <param name="transactionId"></param>
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/// <param name="callback"></param>
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public void SetConnectedCallback(string transactionId, Action<ITunnelConnection> callback)
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{
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if (OnConnected.TryGetValue(transactionId, out List<Action<ITunnelConnection>> callbacks) == false)
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{
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callbacks = new List<Action<ITunnelConnection>>();
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OnConnected[transactionId] = callbacks;
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}
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callbacks.Add(callback);
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}
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/// <summary>
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/// 移除打洞成功回调
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/// </summary>
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/// <param name="transactionId"></param>
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/// <param name="callback"></param>
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public void RemoveConnectedCallback(string transactionId, Action<ITunnelConnection> callback)
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{
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if (OnConnected.TryGetValue(transactionId, out List<Action<ITunnelConnection>> callbacks))
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{
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callbacks.Remove(callback);
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}
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}
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/// <summary>
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/// 开始连接对方
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/// </summary>
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/// <param name="remoteMachineId">对方id</param>
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/// <param name="transactionId">事务id，随便起，你喜欢就好</param>
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/// <param name="denyProtocols">本次连接排除那些打洞协议</param>
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/// <returns></returns>
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public async Task<ITunnelConnection> ConnectAsync(string remoteMachineId, string transactionId, TunnelProtocolType denyProtocols)
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{
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return await ConnectAsync(remoteMachineId, transactionId, transactionId, denyProtocols);
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}
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/// <summary>
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/// 开始连接对方
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/// </summary>
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/// <param name="remoteMachineId">对方id</param>
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/// <param name="transactionId">事务id，随便起，你喜欢就好</param>
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/// <param name="transactionTag">事务tag，随便起，你喜欢就好</param>
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/// <param name="denyProtocols">本次连接排除那些打洞协议</param>
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/// <returns></returns>
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public async Task<ITunnelConnection> ConnectAsync(string remoteMachineId, string transactionId, string transactionTag, TunnelProtocolType denyProtocols)
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{
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if (connectingDic.TryAdd(remoteMachineId, true) == false) return null;
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try
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{
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foreach (TunnelTransportItemInfo transportItem in GetTunnelTransports().OrderBy(c => c.Order).Where(c => c.Disabled == false))
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{
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ITunnelTransport transport = transports.FirstOrDefault(c => c.Name == transportItem.Name);
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//找不到这个打洞协议，或者是不支持的协议
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if (transport == null || (transport.ProtocolType & denyProtocols) == transport.ProtocolType)
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{
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continue;
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}
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foreach (var wanPortProtocol in tunnelWanPortTransfer.Protocols)
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{
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//这个打洞协议不支持这个外网端口协议
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if ((transport.AllowWanPortProtocolType & wanPortProtocol) != wanPortProtocol)
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{
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continue;
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}
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TunnelTransportInfo tunnelTransportInfo = null;
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//是否在失败后尝试反向连接
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int times = transportItem.Reverse ? 1 : 0;
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for (int i = 0; i <= times; i++)
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{
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try
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{
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//获取自己的外网ip
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Task<TunnelTransportWanPortInfo> localInfo = GetLocalInfo(wanPortProtocol);
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//获取对方的外网ip
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Task<TunnelTransportWanPortInfo> remoteInfo = GetRemoteWanPort(new TunnelWanPortProtocolInfo
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{
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MachineId = remoteMachineId,
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ProtocolType = wanPortProtocol
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});
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await Task.WhenAll(localInfo, remoteInfo).ConfigureAwait(false);
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if (localInfo.Result == null)
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{
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LoggerHelper.Instance.Error($"tunnel {transport.Name} get local external ip fail ");
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break;
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}
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if (remoteInfo.Result == null)
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{
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LoggerHelper.Instance.Error($"tunnel {transport.Name} get remote {remoteMachineId} external ip fail ");
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break;
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}
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if (LoggerHelper.Instance.LoggerLevel <= LoggerTypes.DEBUG)
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LoggerHelper.Instance.Info($"tunnel {transport.Name} got local external ip {localInfo.Result.ToJson()}");
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if (LoggerHelper.Instance.LoggerLevel <= LoggerTypes.DEBUG)
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LoggerHelper.Instance.Info($"tunnel {transport.Name} got remote external ip {remoteInfo.Result.ToJson()}");
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if (LoggerHelper.Instance.LoggerLevel <= LoggerTypes.DEBUG)
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LoggerHelper.Instance.Info($"tunnel {transportItem.ToJson()}");
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tunnelTransportInfo = new TunnelTransportInfo
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{
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Direction = (TunnelDirection)i,
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TransactionId = transactionId,
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TransactionTag = transactionTag,
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TransportName = transport.Name,
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TransportType = transport.ProtocolType,
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Local = localInfo.Result,
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Remote = remoteInfo.Result,
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SSL = transportItem.SSL,
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FlowId = Interlocked.Increment(ref flowid),
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};
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OnConnecting(tunnelTransportInfo);
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ParseRemoteEndPoint(tunnelTransportInfo);
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ITunnelConnection connection = await transport.ConnectAsync(tunnelTransportInfo).ConfigureAwait(false);
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if (connection != null)
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{
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_OnConnected(connection);
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return connection;
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}
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}
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catch (Exception ex)
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{
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if (LoggerHelper.Instance.LoggerLevel <= LoggerTypes.DEBUG)
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{
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LoggerHelper.Instance.Error(ex);
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}
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}
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}
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if (tunnelTransportInfo != null)
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{
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OnConnectFail(tunnelTransportInfo);
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}
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}
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}
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}
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catch (Exception ex)
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{
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if (LoggerHelper.Instance.LoggerLevel <= LoggerTypes.DEBUG)
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{
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LoggerHelper.Instance.Error(ex);
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}
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}
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finally
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{
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connectingDic.TryRemove(remoteMachineId, out _);
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}
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return null;
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}
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/// <summary>
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/// 收到对方开始连接的消息
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/// </summary>
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/// <param name="tunnelTransportInfo"></param>
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public void OnBegin(TunnelTransportInfo tunnelTransportInfo)
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{
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if (connectingDic.TryAdd(tunnelTransportInfo.Remote.MachineId, true) == false)
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{
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return;
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}
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try
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{
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ITunnelTransport _transports = transports.FirstOrDefault(c => c.Name == tunnelTransportInfo.TransportName && c.ProtocolType == tunnelTransportInfo.TransportType);
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TunnelTransportItemInfo item = GetTunnelTransports().FirstOrDefault(c => c.Name == tunnelTransportInfo.TransportName && c.Disabled == false);
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if (_transports != null && item != null)
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{
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OnConnectBegin(tunnelTransportInfo);
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ParseRemoteEndPoint(tunnelTransportInfo);
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_transports.OnBegin(tunnelTransportInfo).ContinueWith((result) =>
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{
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connectingDic.TryRemove(tunnelTransportInfo.Remote.MachineId, out _);
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});
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}
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else
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{
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connectingDic.TryRemove(tunnelTransportInfo.Remote.MachineId, out _);
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_ = SendConnectFail(tunnelTransportInfo);
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}
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}
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catch (Exception ex)
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{
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connectingDic.TryRemove(tunnelTransportInfo.Remote.MachineId, out _);
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if (LoggerHelper.Instance.LoggerLevel <= LoggerTypes.DEBUG)
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{
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LoggerHelper.Instance.Error(ex);
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}
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}
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}
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/// <summary>
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/// 收到对方发来的连接失败的消息
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/// </summary>
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/// <param name="tunnelTransportInfo"></param>
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public void OnFail(TunnelTransportInfo tunnelTransportInfo)
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{
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ITunnelTransport _transports = transports.FirstOrDefault(c => c.Name == tunnelTransportInfo.TransportName && c.ProtocolType == tunnelTransportInfo.TransportType);
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_transports?.OnFail(tunnelTransportInfo);
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}
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/// <summary>
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/// 收到对方发来的连接成功的消息
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/// </summary>
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/// <param name="tunnelTransportInfo"></param>
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public void OnSuccess(TunnelTransportInfo tunnelTransportInfo)
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{
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ITunnelTransport _transports = transports.FirstOrDefault(c => c.Name == tunnelTransportInfo.TransportName && c.ProtocolType == tunnelTransportInfo.TransportType);
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_transports?.OnSuccess(tunnelTransportInfo);
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}
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/// <summary>
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/// 获取自己的外网IP，给别人调用
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/// </summary>
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/// <returns></returns>
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public async Task<TunnelTransportWanPortInfo> GetWanPort(TunnelWanPortProtocolInfo _info)
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{
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return await GetLocalInfo(_info.ProtocolType).ConfigureAwait(false);
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}
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/// <summary>
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/// 获取自己的外网IP
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/// </summary>
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/// <returns></returns>
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private async Task<TunnelTransportWanPortInfo> GetLocalInfo(TunnelWanPortProtocolType tunnelWanPortProtocolType)
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{
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TunnelWanPortEndPoint ip = await tunnelWanPortTransfer.GetWanPortAsync(ServerHost(), LocalIP(), tunnelWanPortProtocolType).ConfigureAwait(false);
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if (ip != null)
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{
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MapInfo portMapInfo = TunnelUpnpTransfer.PortMap ?? new MapInfo { PrivatePort = 0, PublicPort = 0 };
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var config = GetLocalConfig();
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return new TunnelTransportWanPortInfo
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{
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Local = ip.Local,
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Remote = ip.Remote,
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LocalIps = config.LocalIps,
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RouteLevel = config.RouteLevel,
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MachineId = config.MachineId,
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PortMapLan = portMapInfo.PrivatePort,
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PortMapWan = portMapInfo.PublicPort,
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};
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}
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return null;
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}
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private void OnConnecting(TunnelTransportInfo tunnelTransportInfo)
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{
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if (LoggerHelper.Instance.LoggerLevel <= LoggerTypes.DEBUG)
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LoggerHelper.Instance.Info($"tunnel connecting {tunnelTransportInfo.Remote.MachineId}->{tunnelTransportInfo.Remote.MachineName}");
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}
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private void OnConnectBegin(TunnelTransportInfo tunnelTransportInfo)
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{
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if (LoggerHelper.Instance.LoggerLevel <= LoggerTypes.DEBUG)
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LoggerHelper.Instance.Info($"tunnel connecting from {tunnelTransportInfo.Remote.MachineId}->{tunnelTransportInfo.Remote.MachineName}");
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}
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/// <summary>
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/// 连接成功
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/// </summary>
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/// <param name="connection"></param>
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private void _OnConnected(ITunnelConnection connection)
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{
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if (LoggerHelper.Instance.LoggerLevel <= LoggerTypes.DEBUG)
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LoggerHelper.Instance.Debug($"tunnel connect {connection.RemoteMachineId}->{connection.RemoteMachineName} success->{connection.IPEndPoint}");
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//调用以下别人注册的回调
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if (OnConnected.TryGetValue(Helper.GlobalString, out List<Action<ITunnelConnection>> callbacks))
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{
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foreach (var item in callbacks)
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{
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item(connection);
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}
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}
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if (OnConnected.TryGetValue(connection.TransactionId, out callbacks))
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{
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foreach (var item in callbacks)
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{
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item(connection);
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}
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}
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}
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private void OnConnectFail(TunnelTransportInfo tunnelTransportInfo)
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{
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if (LoggerHelper.Instance.LoggerLevel <= LoggerTypes.DEBUG)
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LoggerHelper.Instance.Error($"tunnel connect {tunnelTransportInfo.Remote.MachineId} fail");
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}
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private void ParseRemoteEndPoint(TunnelTransportInfo tunnelTransportInfo)
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{
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//要连接哪些IP
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List<IPEndPoint> eps = new List<IPEndPoint>();
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//先尝试内网ipv4
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if (tunnelTransportInfo.Local.Remote.Address.Equals(tunnelTransportInfo.Remote.Remote.Address))
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{
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eps.AddRange(tunnelTransportInfo.Remote.LocalIps.Where(c => c.AddressFamily == AddressFamily.InterNetwork).SelectMany(c => new List<IPEndPoint>
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{
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new IPEndPoint(c, tunnelTransportInfo.Remote.Local.Port),
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new IPEndPoint(c, tunnelTransportInfo.Remote.Remote.Port),
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new IPEndPoint(c, tunnelTransportInfo.Remote.Remote.Port + 1)
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}));
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}
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//在尝试外网
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eps.AddRange(new List<IPEndPoint>{
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new IPEndPoint(tunnelTransportInfo.Remote.Remote.Address,tunnelTransportInfo.Remote.Remote.Port),
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new IPEndPoint(tunnelTransportInfo.Remote.Remote.Address,tunnelTransportInfo.Remote.Remote.Port+1)
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});
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//再尝试IPV6
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eps.AddRange(tunnelTransportInfo.Remote.LocalIps.Where(c => c.AddressFamily == AddressFamily.InterNetworkV6).SelectMany(c => new List<IPEndPoint>
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{
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new IPEndPoint(c, tunnelTransportInfo.Remote.Local.Port),
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new IPEndPoint(c, tunnelTransportInfo.Remote.Remote.Port),
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new IPEndPoint(c, tunnelTransportInfo.Remote.Remote.Port + 1)
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}));
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//本机有V6
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bool hasV6 = tunnelTransportInfo.Local.LocalIps.Any(c => c.AddressFamily == AddressFamily.InterNetworkV6);
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//本机的局域网ip和外网ip
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List<IPAddress> localLocalIps = tunnelTransportInfo.Local.LocalIps.Concat(new List<IPAddress> { tunnelTransportInfo.Local.Remote.Address }).ToList();
|
||
eps = eps
|
||
//对方是V6，本机也得有V6
|
||
.Where(c => (c.AddressFamily == AddressFamily.InterNetworkV6 && hasV6) || c.AddressFamily == AddressFamily.InterNetwork)
|
||
//端口和本机端口一样，那不应该是换回地址
|
||
.Where(c => (c.Port == tunnelTransportInfo.Local.Local.Port && c.Address.Equals(IPAddress.Loopback)) == false)
|
||
//端口和本机端口一样。那不应该是本机的IP
|
||
.Where(c => (c.Port == tunnelTransportInfo.Local.Local.Port && localLocalIps.Any(d => d.Equals(c.Address))) == false)
|
||
.Where(c => c.Address.Equals(IPAddress.Any) == false && c.Port > 0)
|
||
.ToList();
|
||
|
||
tunnelTransportInfo.RemoteEndPoints = eps;
|
||
}
|
||
|
||
|
||
private ConcurrentDictionary<string, bool> backgroundDic = new ConcurrentDictionary<string, bool>();
|
||
/// <summary>
|
||
/// 开始后台打洞
|
||
/// </summary>
|
||
/// <param name="remoteMachineId"></param>
|
||
/// <param name="transactionId"></param>
|
||
public void StartBackground(string remoteMachineId, string transactionId, TunnelProtocolType denyProtocols, Func<bool> stopCallback, Func<ITunnelConnection, Task> resultCallback, int times = 10, int delay = 10000)
|
||
{
|
||
if (AddBackground(remoteMachineId, transactionId) == false)
|
||
{
|
||
if (LoggerHelper.Instance.LoggerLevel <= LoggerTypes.DEBUG)
|
||
LoggerHelper.Instance.Error($"tunnel background {remoteMachineId}@{transactionId} already exists");
|
||
return;
|
||
}
|
||
TimerHelper.Async(async () =>
|
||
{
|
||
try
|
||
{
|
||
ITunnelConnection connection = null;
|
||
|
||
await Task.Delay(delay);
|
||
for (int i = 1; i <= times; i++)
|
||
{
|
||
if (stopCallback()) break;
|
||
|
||
connection = await ConnectAsync(remoteMachineId, transactionId, denyProtocols);
|
||
if (connection != null)
|
||
{
|
||
|
||
break;
|
||
}
|
||
await Task.Delay(i * 3000);
|
||
}
|
||
|
||
await resultCallback(connection);
|
||
}
|
||
catch (Exception)
|
||
{
|
||
}
|
||
finally
|
||
{
|
||
RemoveBackground(remoteMachineId, transactionId);
|
||
}
|
||
|
||
});
|
||
|
||
}
|
||
private bool AddBackground(string remoteMachineId, string transactionId)
|
||
{
|
||
return backgroundDic.TryAdd(GetBackgroundKey(remoteMachineId, transactionId), true);
|
||
}
|
||
private void RemoveBackground(string remoteMachineId, string transactionId)
|
||
{
|
||
backgroundDic.TryRemove(GetBackgroundKey(remoteMachineId, transactionId), out _);
|
||
}
|
||
/// <summary>
|
||
/// 是否正在后台打洞
|
||
/// </summary>
|
||
/// <param name="remoteMachineId"></param>
|
||
/// <param name="transactionId"></param>
|
||
/// <returns></returns>
|
||
public bool IsBackground(string remoteMachineId, string transactionId)
|
||
{
|
||
return backgroundDic.ContainsKey(GetBackgroundKey(remoteMachineId, transactionId));
|
||
}
|
||
private string GetBackgroundKey(string remoteMachineId, string transactionId)
|
||
{
|
||
return $"{remoteMachineId}@{transactionId}";
|
||
}
|
||
}
|
||
}
|