c# – 创建电报auth_key

2023年6月19日 206次阅读

我最近开始使用电报api.在第一阶段,我发出了接收auth_key的请求.

这是我的c#代码：

// auth_key_id in unencrypted message is ZERO
Int64 auth_key_id = 0;
// this is current time stamp that used as message id
Int64 message_id = DateTime.Now.Ticks;
// message type for req_pq is 0x60469778 in big-ending format
byte[] message_type = {120, 151, 70, 96};
// this is data lenght, it determind in run time
Int32 data_lenght;
// data is combined message_type and an int128 bit value called nonce
// nonce create by random
byte[] nonce = new byte[16];
Random rand = new Random(1);
rand.NextBytes(nonce);
// make data
List<byte> dataList = new List<byte>();
dataList.AddRange(message_type);
dataList.AddRange(nonce);
byte[] data = dataList.ToArray();
// make packet
List<byte> packetList = new List<byte>();
packetList.AddRange(BitConverter.GetBytes(auth_key_id));
packetList.AddRange(BitConverter.GetBytes(message_id));
data_lenght = data.Length;
packetList.AddRange(BitConverter.GetBytes(data_lenght));
packetList.AddRange(data);
byte[] packet = packetList.ToArray();
try
{
    Socket s = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
    s.Connect("149.154.167.40", 443);
    if (s.Connected) 
    {
        IPEndPoint remote = s.RemoteEndPoint as IPEndPoint;
        Console.WriteLine("Connected To : "+remote.Address+":"+remote.Port);
    }
    int sendLength = s.Send(packet);
    Console.WriteLine("Send " +sendLength+" Byte(s)");
    byte[] received = new byte[128];
    int recLen = s.Receive(received);
    Console.WriteLine("Received " + recLen + " Byte(s)");
    Console.ReadKey();
}
catch (Exception e)
{
    Console.WriteLine(e.Message);
}

我通过wireshark捕获发送数据并获取此有效负载：

0000 10 fe ed f4 8e 97 20 6a 8a 54 28 95 08 00 45 00
0010 00 50 02 a3 40 00 80 06 00 00 c0 a8 01 64 95 9a
0020 a7 28 23 e3 01 bb 0e 4d aa 3b 61 c3 01 b6 50 18
0030 01 01 ff 11 00 00 00 00 00 00 00 00 00 00 af 20
0040 82 e0 b4 08 d3 08 14 00 00 00 78 97 46 60 46 d0
0050 86 82 40 97 e4 a3 95 cf ff 46 69 9c 73 c4

粗体部分是我的有效载荷,根据电报文件,它似乎是正确的,但我没有从服务器得到任何响应.

最佳答案 轻微评论：我对Telegram API一无所知.

首先,您将连接到149.154.167.40:443.这是HTTPS端点的默认端口,这意味着您的客户端需要“说”SSL才能进行通信.

基本上发生的是连接到端口,服务器等待有效的SSL握手.但你实际发送的是实际内容本身.服务器注意到您正在发送内容,但由于收到的字节数小于有效的SSL握手,因此它会一直等待您发送更多内容.

你要做的是“说”这个SSL协议. SSL使您发送和/或接收的内容得以加密.例如,这可以通过使用SslStream来完成.这略高一些,但它会阻止您实现SSL实现.

另一方面,您可以尝试连接到端口80(如果可用),但这会禁用加密.我不建议这样做.

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