解决一下 WebView2 不能用 socket5代理的问题。

webview2现在好像还能在启用s5代理的情况下，可以输入账号密码。应该是还没开发这个API。所以曲线解决了一下，记录一下吧。

解决就是自己写代理转发认证一下。直接上代码 

    /// <summary>    /// Socket代理5转发    /// </summary>    public class Socket5Forward    {        #region 类型 Type        #region 私有类型 Private        /// <summary>        /// 进度命令        /// </summary>        private enum Command        {            /// <summary>            /// 默认            /// </summary>            Default,            /// <summary>            /// 连接            /// </summary>            Connection,            /// <summary>            /// 验证            /// </summary>            Validate,            /// <summary>            /// 读写            /// </summary>            ReadWrite        }        /// <summary>        /// 异步状态对象        /// </summary>        private class StateObject        {            /// <summary>            /// 标识            /// </summary>            public long IntID { get; set; }            /// <summary>            /// 客户端-无认证            /// </summary>            public Socket ClientSocket { get; set; }            /// <summary>            /// 客户端-进度            /// </summary>            public Command ClientCommand { get; set; } = Command.Default;            /// <summary>            /// 客户端-数据包            /// </summary>            public List<ArraySegment<byte>> ClientRead { get; set; }            /// <summary>            /// 代理端-需认证            /// </summary>            public Socket ProxySocket { get; set; }            /// <summary>            /// 代理端-进度            /// </summary>            public Command ProxyCommand { get; set; } = Command.Default;            /// <summary>            /// 代理段-数据包            /// </summary>            public List<ArraySegment<byte>> ProxyRead { get; set; }        }        /// <summary>        /// 代理数据        /// </summary>        public class Proxy        {            /// <summary>            /// 代理IP            /// </summary>            public string IP { set; get; }            /// <summary>            /// 代理端口            /// </summary>            public int Port { set; get; }            /// <summary>            /// 代理用户            /// </summary>            public string User { set; get; }            /// <summary>            /// 代理密码            /// </summary>            public string Pass { set; get; }        }        #endregion 私有类型        #region 公开类型 Public        #endregion 公开类型        #endregion 类型        #region 属性 Propertie        #region 私有属性 Private        /// <summary>        /// 代理信息        /// </summary>        private Proxy ObjProxy { get; set; }        /// <summary>        /// 自增标识        /// </summary>        private long IntID { get; set; } = 0;        /// <summary>        /// 服务对象        /// </summary>        private TcpListener ObjServer { get; set; }        #endregion 私有属性        #endregion 属性        #region 构造 Constructor        /// <summary>        /// 构造对象        /// </summary>        /// <param name="sIp">代理IP</param>        /// <param name="nPort">代理端口</param>        /// <param name="sUser">代理用户</param>        /// <param name="sPass">代理密码</param>        public Socket5Forward(string sIp, int nPort, string sUser, string sPass)        {            ObjProxy = new Proxy            {                IP = sIp,                Port = nPort,                User = sUser,                Pass = sPass            };            AddLog(System.Text.Json.JsonSerializer.Serialize(ObjProxy));        }        public Socket5Forward(Proxy oProxy)        {            ObjProxy = oProxy;        }        #endregion  构造        #region 方法 Method        #region 私有方法 Private        /// <summary>        /// 日志        /// </summary>        /// <param name="sMsg"></param>        private static void AddLog(string sMsg)        {            System.Diagnostics.Trace.WriteLine(sMsg);            //Console.WriteLine(sMsg);        }        #region 客户端        /// <summary>        /// 客户端-接受连接        /// </summary>        /// <param name="iAR"></param>        private void ClientAccept(IAsyncResult iAR)        {            AddLog("客户端-连接");            var listener = iAR.AsyncState as TcpListener;            try            {                var oClientSocket = listener.EndAcceptSocket(iAR);                var oProxyScoket = new TcpClient();                var oState = new StateObject                {                    IntID = ++IntID,                    ClientSocket = oClientSocket,                    ClientCommand = Command.Connection,                    ClientRead = new List<ArraySegment<byte>>() { new ArraySegment<byte>(new byte[oClientSocket.ReceiveBufferSize]) },                    ProxySocket = oProxyScoket.Client,                    ProxyRead = new List<ArraySegment<byte>>() { new ArraySegment<byte>(new byte[oClientSocket.ReceiveBufferSize]) }                };                _ = oProxyScoket.BeginConnect(ObjProxy.IP, ObjProxy.Port, ProxyConnect, oState);                _ = listener.BeginAcceptSocket(ClientAccept, listener);            }            catch { }        }        /// <summary>        /// 客户端-读取->转发        /// </summary>        /// <param name="iAR"></param>        private void ClientRead(IAsyncResult iAR)        {            var oState = iAR.AsyncState as StateObject;            try            {                var nRead = oState.ClientSocket.EndReceive(iAR);                if (nRead > 0)                {                    if (oState.ClientCommand == Command.Connection)                    {                        AddLog($"[{oState.IntID}]客户端-请求命令");                        var nFristMethod = oState.ClientRead[0].Array[2];                        _ = oState.ClientSocket.Send(new byte[] { 0x05, nFristMethod });                        oState.ClientCommand = Command.ReadWrite;                    }                    else if (oState.ClientCommand == Command.ReadWrite)                    {                        //var sText = Encoding.UTF8.GetString(oState.ClientRead[0].Array, 0, nRead);                        //AddLog(sText);                        var nSend = oState.ProxySocket.Send(oState.ClientRead[0].Array, nRead, SocketFlags.None);                        AddLog($"[{oState.IntID}]客户端-转发数据包长度:R[{nRead}],S[{nSend}]");                    }                    _ = oState.ClientSocket.BeginReceive(oState.ClientRead, SocketFlags.None, ClientRead, oState);                }                else                {                    AddLog($"[{oState.IntID}]客户端-关闭:长度不足");                    oState.ClientSocket.Close();                    oState.ProxySocket.Close();                }            }            catch (Exception)            {                AddLog($"[{oState.IntID}]客户端-关闭:异常关闭");                oState.ClientSocket.Close();                oState.ProxySocket.Close();            }        }        #endregion        #region 代理端        /// <summary>        /// 代理端-连接完成        /// </summary>        /// <param name="iAR"></param>        private void ProxyConnect(IAsyncResult iAR)        {            try            {                AddLog("代理端已连接");                var oState = iAR.AsyncState as StateObject;                oState.ProxySocket.EndConnect(iAR);                oState.ProxyCommand = string.IsNullOrEmpty(ObjProxy.User) || string.IsNullOrEmpty(ObjProxy.Pass) ? Command.Validate : Command.Connection;                _ = oState.ProxySocket.Send(new byte[] { 0x05, 0x02, 0x00, 0x02 });                _ = oState.ProxySocket.BeginReceive(oState.ProxyRead, SocketFlags.None, ProxyRead, oState);            }            catch { }        }        /// <summary>        /// 代理端-读取->转发        /// </summary>        /// <param name="iAR"></param>        private void ProxyRead(IAsyncResult iAR)        {            var oState = iAR.AsyncState as StateObject;            try            {                var nRead = oState.ProxySocket.EndReceive(iAR);                if (nRead > 0)                {                    //AddLog($"[{oState.IntID}]ProxyRead====nRead > 0 nRead=" + nRead);                    if (oState.ProxyCommand == Command.Connection)                    {                        var arrBuf = oState.ProxyRead[0].Array;                        AddLog($"[{oState.IntID}]代理端-返回连接方法:{arrBuf[0]:x},{arrBuf[1]:x}");                        var oStream = new MemoryStream();                        oStream.WriteByte(0x1);                        oStream.WriteByte((byte)ObjProxy.User.Length);                        oStream.Write(Encoding.ASCII.GetBytes(ObjProxy.User));                        oStream.WriteByte((byte)ObjProxy.Pass.Length);                        oStream.Write(Encoding.ASCII.GetBytes(ObjProxy.Pass));                        _ = oState.ProxySocket.Send(oStream.ToArray());                        oStream.Close();                        oState.ProxyCommand = Command.Validate;                    }                    else if (oState.ProxyCommand == Command.Validate)                    {                        var arrBuf = oState.ProxyRead[0].Array;                        AddLog($"[{oState.IntID}]代理端-返回验证结果:{arrBuf[0]:x},{arrBuf[1]:x}");                        if (arrBuf[1] == 0x0)                        {                            AddLog($"[{oState.IntID}]客户端-接受数据");                            _ = oState.ClientSocket.BeginReceive(oState.ClientRead, SocketFlags.None, ClientRead, oState);                            oState.ProxyCommand = Command.ReadWrite;                        }                        else                        {                            AddLog($"[{oState.IntID}]代理端-认证错误");                            oState.ProxySocket.Close();                            oState.ClientSocket.Close();                        }                    }                    else if (oState.Pro 江西党性培训 www.ctbuganxun.com xyCommand == Command.ReadWrite)                    {                        //var sText = Encoding.UTF8.GetString(oState.ProxyRead[0].Array);                        var nSend = _ = oState.ClientSocket.Send(oState.ProxyRead[0].Array, nRead, SocketFlags.None);                        AddLog($"[{oState.IntID}]代理端-转发数据包长度:R[{nRead}],S[{nSend}]");                    }                    _ = oState.ProxySocket.BeginReceive(oState.ProxyRead, SocketFlags.None, ProxyRead, oState);                }                else                {                    AddLog($"[{oState.IntID}]代理端-关闭:长度不足");                    oState.ProxySocket.Close();                    oState.ClientSocket.Close();                }            }            catch (Exception)            {                AddLog($"[{oState.IntID}]代理端-关闭:异常");                oState.ProxySocket.Close();                oState.ClientSocket.Close();            }        }        #endregion        #endregion 私有方法        #region 公开方法 Public        /// <summary>        /// 开始服务        /// </summary>        /// <param name="nProt"></param>        public void Start(int nProt)        {            AddLog("开始");            try            {                ObjServer = new TcpListener(IPAddress.Any, nProt);                ObjServer.Start();                _ = ObjServer.BeginAcceptSocket(ClientAccept, ObjServer);            }            catch (Exception)            {                ObjServer = null;            }        }        public void Stop()        {            ObjServer?.Stop();        }        #endregion 公开方法        #endregion 方法    }