60 lines
1.6 KiB
C#
60 lines
1.6 KiB
C#
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using System;
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using System.Text;
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namespace Server.Helper.Sock5;
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public class Socks5Request
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{
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public byte Version { get; set; }
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public byte Command { get; set; }
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public byte Reserved { get; set; }
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public byte AddressType { get; set; }
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public string DestinationAddress { get; set; }
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public ushort DestinationPort { get; set; }
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public static Socks5Request Parse(byte[] data)
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{
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if (data.Length < 10)
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{
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throw new ArgumentException("Invalid data length");
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}
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Socks5Request socks5Request = new Socks5Request();
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socks5Request.Version = data[0];
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socks5Request.Command = data[1];
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socks5Request.Reserved = data[2];
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socks5Request.AddressType = data[3];
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if (socks5Request.AddressType != 1)
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{
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if (socks5Request.AddressType == 3)
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{
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_ = data[4];
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}
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else if (socks5Request.AddressType != 4)
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{
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throw new ArgumentException("Invalid address type");
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}
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}
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if (socks5Request.AddressType == 3)
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{
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socks5Request.DestinationAddress = Encoding.ASCII.GetString(data, 5, data[4]);
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}
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if (socks5Request.AddressType == 1)
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{
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socks5Request.DestinationAddress = data[4] + "." + data[5] + "." + data[6] + "." + data[7];
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}
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Array.Reverse(data, data.Length - 2, 2);
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socks5Request.DestinationPort = BitConverter.ToUInt16(data, data.Length - 2);
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return socks5Request;
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}
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public override string ToString()
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{
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return $"Version: {Version}, Command: {Command}, Reserved: {Reserved}, AddressType: {AddressType}, DestinationAddress: {DestinationAddress}, DestinationPort: {DestinationPort}";
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}
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}
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