/// <summary>
        /// Initializes a new instance of the <see cref="ConnectionInfo"/> class.
        /// </summary>
        /// <param name="host">Connection host.</param>
        /// <param name="port">Connection port.</param>
        /// <param name="username">Connection username.</param>
        /// <param name="proxyType">Type of the proxy.</param>
        /// <param name="proxyHost">The proxy host.</param>
        /// <param name="proxyPort">The proxy port.</param>
        /// <param name="proxyUsername">The proxy username.</param>
        /// <param name="proxyPassword">The proxy password.</param>
        /// <exception cref="ArgumentException"><paramref name="host"/> is invalid, or <paramref name="username"/> is null or contains whitespace characters.</exception>
        ///   
        /// <exception cref="ArgumentOutOfRangeException"><paramref name="port"/> is not within <see cref="IPEndPoint.MinPort"/> and <see cref="IPEndPoint.MaxPort"/>.</exception>
        ///   
        /// <exception cref="ArgumentException"><paramref name="username"/> is null or empty.</exception>
        protected ConnectionInfo(string host, int port, string username, ProxyTypes proxyType, string proxyHost, int proxyPort, string proxyUsername, string proxyPassword)
            : this()
        {
            if (!host.IsValidHost())
                throw new ArgumentException("host");

            if (!string.IsNullOrEmpty(proxyHost) && !proxyHost.IsValidHost())
                throw new ArgumentException("proxyHost");

            if (!port.IsValidPort())
                throw new ArgumentOutOfRangeException("port");

            if (!proxyPort.IsValidPort())
                throw new ArgumentOutOfRangeException("proxyPort");

            if (username.IsNullOrWhiteSpace())
                throw new ArgumentException("username");

            this.Host = host;
            this.Port = port;
            this.Username = username;

            this.ProxyType = proxyType;
            this.ProxyHost = proxyHost;
            this.ProxyPort = proxyPort;
            this.ProxyUsername = proxyUsername;
            this.ProxyPassword = proxyPassword;
        }

 public void PasswordConnectionInfoConstructorTest10()
 {
     string host = string.Empty; // TODO: Initialize to an appropriate value
     string username = string.Empty; // TODO: Initialize to an appropriate value
     string password = string.Empty; // TODO: Initialize to an appropriate value
     ProxyTypes proxyType = new ProxyTypes(); // TODO: Initialize to an appropriate value
     string proxyHost = string.Empty; // TODO: Initialize to an appropriate value
     int proxyPort = 0; // TODO: Initialize to an appropriate value
     PasswordConnectionInfo target = new PasswordConnectionInfo(host, username, password, proxyType, proxyHost, proxyPort);
     Assert.Inconclusive("TODO: Implement code to verify target");
 }

 public void KeyboardInteractiveConnectionInfoConstructorTest2()
 {
     string host = string.Empty; // TODO: Initialize to an appropriate value
     string username = string.Empty; // TODO: Initialize to an appropriate value
     ProxyTypes proxyType = new ProxyTypes(); // TODO: Initialize to an appropriate value
     string proxyHost = string.Empty; // TODO: Initialize to an appropriate value
     int proxyPort = 0; // TODO: Initialize to an appropriate value
     string proxyUsername = string.Empty; // TODO: Initialize to an appropriate value
     KeyboardInteractiveConnectionInfo target = new KeyboardInteractiveConnectionInfo(host, username, proxyType, proxyHost, proxyPort, proxyUsername);
     Assert.Inconclusive("TODO: Implement code to verify target");
 }

 public void ConnectionInfoConstructorTest()
 {
     string host = string.Empty; // TODO: Initialize to an appropriate value
     int port = 0; // TODO: Initialize to an appropriate value
     string username = string.Empty; // TODO: Initialize to an appropriate value
     ProxyTypes proxyType = new ProxyTypes(); // TODO: Initialize to an appropriate value
     string proxyHost = string.Empty; // TODO: Initialize to an appropriate value
     int proxyPort = 0; // TODO: Initialize to an appropriate value
     string proxyUsername = string.Empty; // TODO: Initialize to an appropriate value
     string proxyPassword = string.Empty; // TODO: Initialize to an appropriate value
     AuthenticationMethod[] authenticationMethods = null; // TODO: Initialize to an appropriate value
     ConnectionInfo target = new ConnectionInfo(host, port, username, proxyType, proxyHost, proxyPort, proxyUsername, proxyPassword, authenticationMethods);
     Assert.Inconclusive("TODO: Implement code to verify target");
 }

 /// <summary>
 /// Initializes a new instance of the <see cref="PasswordConnectionInfo"/> class.
 /// </summary>
 /// <param name="host">Connection host.</param>
 /// <param name="port">The port.</param>
 /// <param name="username">Connection username.</param>
 /// <param name="password">Connection password.</param>
 /// <param name="proxyType">Type of the proxy.</param>
 /// <param name="proxyHost">The proxy host.</param>
 /// <param name="proxyPort">The proxy port.</param>
 /// <param name="proxyUsername">The proxy username.</param>
 /// <param name="proxyPassword">The proxy password.</param>
 public PasswordConnectionInfo(string host, int port, string username, byte[] password, ProxyTypes proxyType, string proxyHost, int proxyPort, string proxyUsername, string proxyPassword)
     : base(host, port, username, proxyType, proxyHost, proxyPort, proxyUsername, proxyPassword, new PasswordAuthenticationMethod(username, password))
 {
     foreach (var authenticationMethod in AuthenticationMethods.OfType<PasswordAuthenticationMethod>())
     {
         authenticationMethod.PasswordExpired += AuthenticationMethod_PasswordExpired;
     }
 }

        /// <summary>
        /// Initializes a new instance of the <see cref="ConnectionInfo" /> class.
        /// </summary>
        /// <param name="host">Connection host.</param>
        /// <param name="port">Connection port.</param>
        /// <param name="username">Connection username.</param>
        /// <param name="proxyType">Type of the proxy.</param>
        /// <param name="proxyHost">The proxy host.</param>
        /// <param name="proxyPort">The proxy port.</param>
        /// <param name="proxyUsername">The proxy username.</param>
        /// <param name="proxyPassword">The proxy password.</param>
        /// <param name="authenticationMethods">The authentication methods.</param>
        /// <exception cref="ArgumentNullException"><paramref name="host"/> is <c>null</c>.</exception>
        /// <exception cref="ArgumentException"><paramref name="username" /> is null, a zero-length string or contains only whitespace characters.</exception>
        /// <exception cref="ArgumentOutOfRangeException"><paramref name="port" /> is not within <see cref="F:System.Net.IPEndPoint.MinPort" /> and <see cref="F:System.Net.IPEndPoint.MaxPort" />.</exception>
        /// <exception cref="ArgumentNullException"><paramref name="proxyType"/> is not <see cref="ProxyTypes.None"/> and <paramref name="proxyHost" /> is <c>null</c>.</exception>
        /// <exception cref="ArgumentOutOfRangeException"><paramref name="proxyType"/> is not <see cref="ProxyTypes.None"/> and <paramref name="proxyPort" /> is not within <see cref="F:System.Net.IPEndPoint.MinPort" /> and <see cref="F:System.Net.IPEndPoint.MaxPort" />.</exception>
        /// <exception cref="ArgumentNullException"><paramref name="authenticationMethods"/> is <c>null</c>.</exception>
        /// <exception cref="ArgumentException">No <paramref name="authenticationMethods"/> specified.</exception>
        public ConnectionInfo(string host, int port, string username, ProxyTypes proxyType, string proxyHost, int proxyPort, string proxyUsername, string proxyPassword, params AuthenticationMethod[] authenticationMethods)
        {
            if (host == null)
                throw new ArgumentNullException("host");
            port.ValidatePort("port");

            if (username == null)
                throw new ArgumentNullException("username");
            if (username.All(char.IsWhiteSpace))
                throw new ArgumentException("Cannot be empty or contain only whitespace.", "username");

            if (proxyType != ProxyTypes.None)
            {
                if (proxyHost == null)
                    throw new ArgumentNullException("proxyHost");
                proxyPort.ValidatePort("proxyPort");
            }

            if (authenticationMethods == null)
                throw new ArgumentNullException("authenticationMethods");
            if (authenticationMethods.Length == 0)
                throw new ArgumentException("At least one authentication method should be specified.", "authenticationMethods");

            //  Set default connection values
            Timeout = TimeSpan.FromSeconds(30);
            RetryAttempts = 10;
            MaxSessions = 10;
            Encoding = Encoding.UTF8;

            KeyExchangeAlgorithms = new Dictionary<string, Type>
                {
                    {"diffie-hellman-group-exchange-sha256", typeof (KeyExchangeDiffieHellmanGroupExchangeSha256)},
                    {"diffie-hellman-group-exchange-sha1", typeof (KeyExchangeDiffieHellmanGroupExchangeSha1)},
                    {"diffie-hellman-group14-sha1", typeof (KeyExchangeDiffieHellmanGroup14Sha1)},
                    {"diffie-hellman-group1-sha1", typeof (KeyExchangeDiffieHellmanGroup1Sha1)},
                    //{"ecdh-sha2-nistp256", typeof(KeyExchangeEllipticCurveDiffieHellman)},
                    //{"ecdh-sha2-nistp256", typeof(...)},
                    //{"ecdh-sha2-nistp384", typeof(...)},
                    //{"ecdh-sha2-nistp521", typeof(...)},
                    //"gss-group1-sha1-toWM5Slw5Ew8Mqkay+al2g==" - WinSSHD
                    //"gss-gex-sha1-toWM5Slw5Ew8Mqkay+al2g==" - WinSSHD
                };

            Encryptions = new Dictionary<string, CipherInfo>
                {
                    {"aes256-ctr", new CipherInfo(256, (key, iv) => new AesCipher(key, new CtrCipherMode(iv), null))},
                    {"3des-cbc", new CipherInfo(192, (key, iv) => new TripleDesCipher(key, new CbcCipherMode(iv), null))},
                    {"aes128-cbc", new CipherInfo(128, (key, iv) => new AesCipher(key, new CbcCipherMode(iv), null))},
                    {"aes192-cbc", new CipherInfo(192, (key, iv) => new AesCipher(key, new CbcCipherMode(iv), null))},
                    {"aes256-cbc", new CipherInfo(256, (key, iv) => new AesCipher(key, new CbcCipherMode(iv), null))},
                    {"blowfish-cbc", new CipherInfo(128, (key, iv) => new BlowfishCipher(key, new CbcCipherMode(iv), null))},
                    {"twofish-cbc", new CipherInfo(256, (key, iv) => new TwofishCipher(key, new CbcCipherMode(iv), null))},
                    {"twofish192-cbc", new CipherInfo(192, (key, iv) => new TwofishCipher(key, new CbcCipherMode(iv), null))},
                    {"twofish128-cbc", new CipherInfo(128, (key, iv) => new TwofishCipher(key, new CbcCipherMode(iv), null))},
                    {"twofish256-cbc", new CipherInfo(256, (key, iv) => new TwofishCipher(key, new CbcCipherMode(iv), null))},
                    ////{"serpent256-cbc", typeof(CipherSerpent256CBC)},
                    ////{"serpent192-cbc", typeof(...)},
                    ////{"serpent128-cbc", typeof(...)},
                    {"arcfour", new CipherInfo(128, (key, iv) => new Arc4Cipher(key, false))},
                    {"arcfour128", new CipherInfo(128, (key, iv) => new Arc4Cipher(key, true))},
                    {"arcfour256", new CipherInfo(256, (key, iv) => new Arc4Cipher(key, true))},
                    ////{"idea-cbc", typeof(...)},
                    {"cast128-cbc", new CipherInfo(128, (key, iv) => new CastCipher(key, new CbcCipherMode(iv), null))},
                    ////{"[email protected]", typeof(...)},                
                    {"aes128-ctr", new CipherInfo(128, (key, iv) => new AesCipher(key, new CtrCipherMode(iv), null))},
                    {"aes192-ctr", new CipherInfo(192, (key, iv) => new AesCipher(key, new CtrCipherMode(iv), null))},
                };

            HmacAlgorithms = new Dictionary<string, HashInfo>
                {
                    {"hmac-md5", new HashInfo(16*8, HashAlgorithmFactory.CreateHMACMD5)},
                    {"hmac-md5-96", new HashInfo(16*8, key => HashAlgorithmFactory.CreateHMACMD5(key, 96))},
                    {"hmac-sha1", new HashInfo(20*8, HashAlgorithmFactory.CreateHMACSHA1)},
                    {"hmac-sha1-96", new HashInfo(20*8, key => HashAlgorithmFactory.CreateHMACSHA1(key, 96))},
                    {"hmac-sha2-256", new HashInfo(32*8, HashAlgorithmFactory.CreateHMACSHA256)},
                    {"hmac-sha2-256-96", new HashInfo(32*8, key => HashAlgorithmFactory.CreateHMACSHA256(key, 96))},
                    {"hmac-sha2-512", new HashInfo(64 * 8, HashAlgorithmFactory.CreateHMACSHA512)},
                    {"hmac-sha2-512-96", new HashInfo(64 * 8,  key => HashAlgorithmFactory.CreateHMACSHA512(key, 96))},
                    //{"[email protected]", typeof(HMacSha1)},
                    {"hmac-ripemd160", new HashInfo(160, HashAlgorithmFactory.CreateHMACRIPEMD160)},
                    {"[email protected]", new HashInfo(160, HashAlgorithmFactory.CreateHMACRIPEMD160)},
//.........这里部分代码省略.........

 /// <summary>
 /// Initializes a new instance of the <see cref="KeyboardInteractiveConnectionInfo"/> class.
 /// </summary>
 /// <param name="host">Connection host.</param>
 /// <param name="port">Connection port.</param>
 /// <param name="username">Connection username.</param>
 /// <param name="proxyType">Type of the proxy.</param>
 /// <param name="proxyHost">The proxy host.</param>
 /// <param name="proxyPort">The proxy port.</param>
 /// <param name="proxyUsername">The proxy username.</param>
 /// <param name="proxyPassword">The proxy password.</param>
 public KeyboardInteractiveConnectionInfo(string host, int port, string username, ProxyTypes proxyType, string proxyHost, int proxyPort, string proxyUsername, string proxyPassword)
     : base(host, port, username, proxyType, proxyHost, proxyPort, proxyUsername, proxyPassword, new KeyboardInteractiveAuthenticationMethod(username))
 {
     foreach (var authenticationMethod in this.AuthenticationMethods.OfType<KeyboardInteractiveAuthenticationMethod>())
     {
         authenticationMethod.AuthenticationPrompt += AuthenticationMethod_AuthenticationPrompt;
     }
 }

 /// <summary>
 /// Initializes a new instance of the <see cref="KeyboardInteractiveConnectionInfo"/> class.
 /// </summary>
 /// <param name="host">Connection host.</param>
 /// <param name="port">Connection port.</param>
 /// <param name="username">Connection username.</param>
 /// <param name="proxyType">Type of the proxy.</param>
 /// <param name="proxyHost">The proxy host.</param>
 /// <param name="proxyPort">The proxy port.</param>
 /// <param name="proxyUsername">The proxy username.</param>
 /// <param name="proxyPassword">The proxy password.</param>
 public KeyboardInteractiveConnectionInfo(string host, int port, string username, ProxyTypes proxyType, string proxyHost, int proxyPort, string proxyUsername, string proxyPassword)
     : base(host, port, username, proxyType, proxyHost, proxyPort, proxyUsername, proxyPassword)
 {
     this._requestMessage = new RequestMessageKeyboardInteractive(ServiceName.Connection, username);
 }

 /// <summary>
 /// Initializes a new instance of the <see cref="PasswordConnectionInfo"/> class.
 /// </summary>
 /// <param name="host">Connection host.</param>
 /// <param name="port">The port.</param>
 /// <param name="username">Connection username.</param>
 /// <param name="proxyType">Type of the proxy.</param>
 /// <param name="proxyHost">The proxy host.</param>
 /// <param name="proxyPort">The proxy port.</param>
 /// <param name="proxyUsername">The proxy username.</param>
 /// <param name="proxyPassword">The proxy password.</param>
 /// <param name="keyFiles">The key files.</param>
 public PrivateKeyConnectionInfo(string host, int port, string username, ProxyTypes proxyType, string proxyHost, int proxyPort, string proxyUsername, string proxyPassword, params PrivateKeyFile[] keyFiles)
     : base(host, port, username, proxyType, proxyHost, proxyPort, proxyUsername, proxyPassword, new PrivateKeyAuthenticationMethod(username, keyFiles))
 {
     this.KeyFiles = new Collection<PrivateKeyFile>(keyFiles);
 }

 public MyProxy(string address, int port, ProxyTypes type, string login = null, string password = null)
     : base(address, port, type, login, password)
 {
     ErrorsCount = StartErrors;
 }

 /// <summary>
 /// Initializes a new instance of the <see cref="KeyboardInteractiveConnectionInfo"/> class.
 /// </summary>
 /// <param name="host">Connection host.</param>
 /// <param name="username">Connection username.</param>
 /// <param name="proxyType">Type of the proxy.</param>
 /// <param name="proxyHost">The proxy host.</param>
 /// <param name="proxyPort">The proxy port.</param>
 /// <param name="proxyUsername">The proxy username.</param>
 /// <param name="proxyPassword">The proxy password.</param>
 public KeyboardInteractiveConnectionInfo(string host, string username, ProxyTypes proxyType, string proxyHost, int proxyPort, string proxyUsername, string proxyPassword)
     : this(host, DefaultPort, username, proxyType, proxyHost, proxyPort, proxyUsername, proxyPassword)
 {
 }

 /// <summary>
 /// Initializes a new instance of the <see cref="PasswordConnectionInfo"/> class.
 /// </summary>
 /// <param name="host">Connection host.</param>
 /// <param name="username">Connection username.</param>
 /// <param name="password">Connection password.</param>
 /// <param name="proxyType">Type of the proxy.</param>
 /// <param name="proxyHost">The proxy host.</param>
 /// <param name="proxyPort">The proxy port.</param>
 /// <param name="proxyUsername">The proxy username.</param>
 public PasswordConnectionInfo(string host, string username, byte[] password, ProxyTypes proxyType, string proxyHost, int proxyPort, string proxyUsername)
     : this(host, ConnectionInfo.DEFAULT_PORT, username, password, proxyType, proxyHost, proxyPort, proxyUsername, string.Empty)
 {
 }

        /// <summary>
        /// Initializes a new instance of the <see cref="PasswordConnectionInfo"/> class.
        /// </summary>
        /// <param name="host">Connection host.</param>
        /// <param name="port">The port.</param>
        /// <param name="username">Connection username.</param>
        /// <param name="password">Connection password.</param>
        /// <param name="proxyType">Type of the proxy.</param>
        /// <param name="proxyHost">The proxy host.</param>
        /// <param name="proxyPort">The proxy port.</param>
        /// <param name="proxyUsername">The proxy username.</param>
        /// <param name="proxyPassword">The proxy password.</param>
        public PasswordConnectionInfo(string host, int port, string username, string password, ProxyTypes proxyType, string proxyHost, int proxyPort, string proxyUsername, string proxyPassword)
            : base(host, port, username, proxyType, proxyHost, proxyPort, proxyUsername, proxyPassword)
        {
            if (password == null)
                throw new ArgumentNullException("password");

            this._password = password;
            this._requestMessage = new RequestMessagePassword(ServiceName.Connection, this.Username, password);
        }

 /// <summary>
 /// Initializes a new instance of the <see cref="PasswordConnectionInfo"/> class.
 /// </summary>
 /// <param name="host">Connection host.</param>
 /// <param name="username">Connection username.</param>
 /// <param name="proxyType">Type of the proxy.</param>
 /// <param name="proxyHost">The proxy host.</param>
 /// <param name="proxyPort">The proxy port.</param>
 /// <param name="proxyUsername">The proxy username.</param>
 /// <param name="keyFiles">The key files.</param>
 public PrivateKeyConnectionInfo(string host, string username, ProxyTypes proxyType, string proxyHost, int proxyPort, string proxyUsername, params PrivateKeyFile[] keyFiles)
     : this(host, DefaultPort, username, proxyType, proxyHost, proxyPort, proxyUsername, string.Empty, keyFiles)
 {
 }

 /// <summary>
 /// Initializes a new instance of the <see cref="PasswordConnectionInfo"/> class.
 /// </summary>
 /// <param name="host">Connection host.</param>
 /// <param name="username">Connection username.</param>
 /// <param name="proxyType">Type of the proxy.</param>
 /// <param name="proxyHost">The proxy host.</param>
 /// <param name="proxyPort">The proxy port.</param>
 /// <param name="proxyUsername">The proxy username.</param>
 /// <param name="proxyPassword">The proxy password.</param>
 /// <param name="keyFiles">The key files.</param>
 public PrivateKeyConnectionInfo(string host, string username, ProxyTypes proxyType, string proxyHost, int proxyPort, string proxyUsername, string proxyPassword, params PrivateKeyFile[] keyFiles)
     : this(host, 22, username, proxyType, proxyHost, proxyPort, proxyUsername, proxyPassword, keyFiles)
 {
 }

 /// <summary>
 /// Initializes a new instance of the <see cref="PasswordConnectionInfo"/> class.
 /// </summary>
 /// <param name="host">Connection host.</param>
 /// <param name="port">The port.</param>
 /// <param name="username">Connection username.</param>
 /// <param name="proxyType">Type of the proxy.</param>
 /// <param name="proxyHost">The proxy host.</param>
 /// <param name="proxyPort">The proxy port.</param>
 /// <param name="proxyUsername">The proxy username.</param>
 /// <param name="proxyPassword">The proxy password.</param>
 /// <param name="keyFiles">The key files.</param>
 public AgentConnectionInfo(string host, int port, string username, ProxyTypes proxyType, string proxyHost, int proxyPort, string proxyUsername, string proxyPassword, IAgentProtocol protocol)
     : base(host, port, username, proxyType, proxyHost, proxyPort, proxyUsername, proxyPassword, new AgentAuthenticationMethod(username,protocol))
 {
     this.Protocol = protocol;
 }

 /// <summary>
 /// Initializes a new instance of the <see cref="KeyboardInteractiveConnectionInfo"/> class.
 /// </summary>
 /// <param name="host">Connection host.</param>
 /// <param name="username">Connection username.</param>
 /// <param name="proxyType">Type of the proxy.</param>
 /// <param name="proxyHost">The proxy host.</param>
 /// <param name="proxyPort">The proxy port.</param>
 public KeyboardInteractiveConnectionInfo(string host, string username, ProxyTypes proxyType, string proxyHost, int proxyPort)
     : this(host, ConnectionInfo.DEFAULT_PORT, username, proxyType, proxyHost, proxyPort, string.Empty, string.Empty)
 {
 }

        //  TODO: DOCS Add exception documentation for this class.

        /// <summary>
        /// Initializes a new instance of the <see cref="ConnectionInfo" /> class.
        /// </summary>
        /// <param name="host">Connection host.</param>
        /// <param name="port">Connection port.</param>
        /// <param name="username">Connection username.</param>
        /// <param name="proxyType">Type of the proxy.</param>
        /// <param name="proxyHost">The proxy host.</param>
        /// <param name="proxyPort">The proxy port.</param>
        /// <param name="proxyUsername">The proxy username.</param>
        /// <param name="proxyPassword">The proxy password.</param>
        /// <param name="authenticationMethods">The authentication methods.</param>
        /// <exception cref="System.ArgumentException">host</exception>
        /// <exception cref="System.ArgumentOutOfRangeException">proxyPort</exception>
        /// <exception cref="ArgumentException"><paramref name="host" /> is invalid, or <paramref name="username" /> is null or contains whitespace characters.</exception>
        /// <exception cref="ArgumentOutOfRangeException"><paramref name="port" /> is not within <see cref="F:System.Net.IPEndPoint.MinPort" /> and <see cref="F:System.Net.IPEndPoint.MaxPort" />.</exception>
        /// <exception cref="ArgumentException"><paramref name="host" /> is invalid, or <paramref name="username" /> is null or contains whitespace characters.</exception>
        public ConnectionInfo(string host, int port, string username, ProxyTypes proxyType, string proxyHost, int proxyPort, string proxyUsername, string proxyPassword, params AuthenticationMethod[] authenticationMethods)
        {
            if (!host.IsValidHost())
                throw new ArgumentException("host");

            if (proxyType != ProxyTypes.None)
            {
                if (string.IsNullOrEmpty(proxyHost) && !proxyHost.IsValidHost())
                    throw new ArgumentException("proxyHost");

                if (!proxyPort.IsValidPort())
                    throw new ArgumentOutOfRangeException("proxyPort");
            }

            if (!port.IsValidPort())
                throw new ArgumentOutOfRangeException("port");

            if (username.IsNullOrWhiteSpace())
                throw new ArgumentException("username");

            if (authenticationMethods == null || authenticationMethods.Length < 1)
                throw new ArgumentException("authenticationMethods");

            //  Set default connection values
            this.Timeout = TimeSpan.FromSeconds(30);
            this.RetryAttempts = 10;
            this.MaxSessions = 10;
            this.Encoding = Encoding.UTF8;

            this.KeyExchangeAlgorithms = new Dictionary<string, Type>()
            {
                {"diffie-hellman-group-exchange-sha256", typeof(KeyExchangeDiffieHellmanGroupExchangeSha256)},
                {"diffie-hellman-group-exchange-sha1", typeof(KeyExchangeDiffieHellmanGroupExchangeSha1)},
                {"diffie-hellman-group14-sha1", typeof(KeyExchangeDiffieHellmanGroup14Sha1)},
                {"diffie-hellman-group1-sha1", typeof(KeyExchangeDiffieHellmanGroup1Sha1)},
                //{"ecdh-sha2-nistp256", typeof(KeyExchangeEllipticCurveDiffieHellman)},
                //{"ecdh-sha2-nistp256", typeof(...)},
                //{"ecdh-sha2-nistp384", typeof(...)},
                //{"ecdh-sha2-nistp521", typeof(...)},
                //"gss-group1-sha1-toWM5Slw5Ew8Mqkay+al2g==" - WinSSHD
                //"gss-gex-sha1-toWM5Slw5Ew8Mqkay+al2g==" - WinSSHD

            };

            this.Encryptions = new Dictionary<string, CipherInfo>()
            {
                {"aes256-ctr", new CipherInfo(256, (key, iv)=>{ return new AesCipher(key, new CtrCipherMode(iv), null); }) },
                {"3des-cbc", new CipherInfo(192, (key, iv)=>{ return new TripleDesCipher(key, new CbcCipherMode(iv), null); }) },
                {"aes128-cbc", new CipherInfo(128, (key, iv)=>{ return new AesCipher(key, new CbcCipherMode(iv), null); }) },
                {"aes192-cbc", new CipherInfo(192, (key, iv)=>{ return new AesCipher(key, new CbcCipherMode(iv), null); }) },
                {"aes256-cbc", new CipherInfo(256, (key, iv)=>{ return new AesCipher(key, new CbcCipherMode(iv), null); }) },
                {"blowfish-cbc", new CipherInfo(128, (key, iv)=>{ return new BlowfishCipher(key, new CbcCipherMode(iv), null); }) },
                {"twofish-cbc", new CipherInfo(256, (key, iv)=>{ return new TwofishCipher(key, new CbcCipherMode(iv), null); }) },
                {"twofish192-cbc", new CipherInfo(192, (key, iv)=>{ return new TwofishCipher(key, new CbcCipherMode(iv), null); }) },
                {"twofish128-cbc", new CipherInfo(128, (key, iv)=>{ return new TwofishCipher(key, new CbcCipherMode(iv), null); }) },
                {"twofish256-cbc", new CipherInfo(256, (key, iv)=>{ return new TwofishCipher(key, new CbcCipherMode(iv), null); }) },
                ////{"serpent256-cbc", typeof(CipherSerpent256CBC)},
                ////{"serpent192-cbc", typeof(...)},
                ////{"serpent128-cbc", typeof(...)},
                {"arcfour", new CipherInfo(128, (key, iv)=>{ return new Arc4Cipher(key, false); }) },
                {"arcfour128", new CipherInfo(128, (key, iv)=>{ return new Arc4Cipher(key, true); }) },
                {"arcfour256", new CipherInfo(256, (key, iv)=>{ return new Arc4Cipher(key, true); }) },
                ////{"idea-cbc", typeof(...)},
                {"cast128-cbc", new CipherInfo(128, (key, iv)=>{ return new CastCipher(key, new CbcCipherMode(iv), null); }) },
                ////{"[email protected]", typeof(...)},                
                {"aes128-ctr", new CipherInfo(128, (key, iv)=>{ return new AesCipher(key, new CtrCipherMode(iv), null); }) },
                {"aes192-ctr", new CipherInfo(192, (key, iv)=>{ return new AesCipher(key, new CtrCipherMode(iv), null); }) },
            };

            this.HmacAlgorithms = new Dictionary<string, HashInfo>()
            {
                {"hmac-md5", new HashInfo(16 * 8, (key)=>{ return new HMac<MD5Hash>(key); }) },
                {"hmac-sha1", new HashInfo(20 * 8, (key)=>{ return new HMac<SHA1Hash>(key); }) },
                {"hmac-sha2-256", new HashInfo(32 * 8, (key)=>{ return new HMac<SHA256Hash>(key); }) },
                {"hmac-sha2-256-96", new HashInfo(32 * 8, (key)=>{ return new HMac<SHA256Hash>(key, 96); }) },
                //{"hmac-sha2-512", new HashInfo(64 * 8, (key)=>{ return new HMac<SHA512Hash>(key); }) },
                //{"hmac-sha2-512-96", new HashInfo(64 * 8, (key)=>{ return new HMac<SHA512Hash>(key, 96); }) },
                //{"[email protected]", typeof(HMacSha1)},
                {"hmac-ripemd160", new HashInfo(160, (key)=>{ return new HMac<RIPEMD160Hash>(key); }) },
                {"[email protected]", new HashInfo(160, (key)=>{ return new HMac<RIPEMD160Hash>(key); }) },
                {"hmac-md5-96", new HashInfo(16 * 8, (key)=>{ return new HMac<MD5Hash>(key, 96); }) },
//.........这里部分代码省略.........

 /// <summary>
 /// Initializes a new instance of the <see cref="KeyboardInteractiveConnectionInfo"/> class.
 /// </summary>
 /// <param name="host">Connection host.</param>
 /// <param name="port">Connection port.</param>
 /// <param name="username">Connection username.</param>
 /// <param name="proxyType">Type of the proxy.</param>
 /// <param name="proxyHost">The proxy host.</param>
 /// <param name="proxyPort">The proxy port.</param>
 /// <param name="proxyUsername">The proxy username.</param>
 /// <param name="proxyPassword">The proxy password.</param>
 public NoneConnectionInfo(string host, int port, string username, ProxyTypes proxyType, string proxyHost, int proxyPort, string proxyUsername, string proxyPassword)
     : base(host, port, username, proxyType, proxyHost, proxyPort, proxyUsername, proxyPassword)
 {
 }

 /// <summary>
 /// Initializes a new instance of the <see cref="PasswordConnectionInfo"/> class.
 /// </summary>
 /// <param name="host">Connection host.</param>
 /// <param name="username">Connection username.</p