douyu danmu test c#

using System;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading;

namespace danmu
{
    class Program
    {
        private static string SERVER_DOMAIN = "openbarrage.douyutv.com";
        private static int SERVER_PORT = 8601;
        private static int ROOM_ID = 288016;
        private static string FIX_TAIL = String.Empty;  //拼接处理后被丢弃的数据，防止弹幕丢失
        class BrrageMsg
        {
            public string Name = String.Empty;
            public string Txt = String.Empty;
        }
        static void Main(string[] args)
        {
            try
            {
                Socket tcpClient = InitTcp(SERVER_DOMAIN, SERVER_PORT);
                Thread getDanmuThread = new Thread(GetDanmu);
                getDanmuThread.Start(tcpClient);
                Thread keepAliveThread = new Thread(KeepAlive);
                keepAliveThread.Start(tcpClient);
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.ToString());
            }
        }

        static Socket InitTcp(string host, int port)
        {
            IPHostEntry hostInfo = Dns.GetHostEntry(host);
            IPAddress ipAddress = hostInfo.AddressList[0]; //域名转IP
            IPEndPoint ipe = new IPEndPoint(ipAddress, port);
            Socket s = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
            s.Connect(ipe);
            return s;
        }
        static byte[] DataToBytes(string data)
        {
            string dantaNew = data + "\0";
            byte[] bodyDataByte = Encoding.UTF8.GetBytes(dantaNew);
            byte[] cType = BitConverter.GetBytes(689);

            int dataLength = dantaNew.Length + cType.Length + 8;
            byte[] dataLengthByte = BitConverter.GetBytes(dataLength);
            byte[] dataLengthByte2 = BitConverter.GetBytes(dataLength);
            byte[] result = new byte[dataLength + 4];

            Array.Copy(dataLengthByte, 0, result, 0, 4);
            Array.Copy(dataLengthByte2, 0, result, 4, 4);
            Array.Copy(cType, 0, result, 8, 4);
            Array.Copy(bodyDataByte, 0, result, 12, bodyDataByte.Length);
            byte[] source = new byte[result.Length];
            Array.Copy(result, 0, source, 0, result.Length);
            return result;
        }

        static void GetDanmu(object obj)
        {
            Socket tcpClient = (Socket)obj;
            string login = "type@=loginreq/roomid@=" + ROOM_ID + "/";
            byte[] loginBytes = DataToBytes(login);
            tcpClient.Send(loginBytes);
            string joingroup = "type@=joingroup/rid@=" + ROOM_ID + "/gid@=-9999/";
            byte[] joingroupBytes = DataToBytes(joingroup);
            tcpClient.Send(joingroupBytes);
            string recvStr = "";
            byte[] recvBytes = new byte[1024];
            int bytes;
            while (true)
            {
                bytes = tcpClient.Receive(recvBytes, recvBytes.Length, 0);//从服务器端接受返回信息
                recvStr = Encoding.UTF8.GetString(recvBytes, 0, bytes);
                ShowMsg(recvStr);
            }
        }

        static BrrageMsg GetMsgType(string[] msgType)
        {
            BrrageMsg brrageMsg = new BrrageMsg();
            foreach (string keyValueTemp in msgType)
            {
                string[] keyValue = Regex.Split(keyValueTemp, "@=", RegexOptions.IgnoreCase);
                if (keyValue.Length >= 2)
                {
                    string key = keyValue[0];
                    string[] textArr = new string[keyValue.Length - 1];
                    Array.Copy(keyValue, 1, textArr, 0, keyValue.Length - 1);
                    string value = String.Join("@", textArr);
                    if (key == "nn")
                    {
                        brrageMsg.Name = value;
                    }
                    if ((key == "txt"))
                    {
                        brrageMsg.Txt = value;
                    }
                }
            }
            return brrageMsg;
        }
        static void ShowMsg(string msg)
        {
            msg = FIX_TAIL + msg;
            string[] chatmsgArray = Regex.Split(msg, "type@=", RegexOptions.IgnoreCase);
            FIX_TAIL = chatmsgArray[chatmsgArray.Length - 1];   //截取最后的丢弃数据，放在下个包的开头，防止数据丢失
            string[] newChatmsgArrayArr = new string[chatmsgArray.Length - 1];
            Array.Copy(chatmsgArray, 0, newChatmsgArrayArr, 0, chatmsgArray.Length - 1);

            foreach (string t in newChatmsgArrayArr)
            {
                string[] msgType = t.Split('/');
                if (msgType.Length >= 2)
                {
                    string type = msgType[0];
                    if (type == "chatmsg")
                    {
                        BrrageMsg brrageMsg = GetMsgType(msgType);
                        string result = String.Format("[{0}]: {1}", brrageMsg.Name, brrageMsg.Txt);
                        Console.WriteLine(result +"  "+ DateTime.Now );
                    }
                }
            }
        }
        static void KeepAlive(object obj)
        {
            Socket tcpClient = (Socket)obj;
            byte[] aliveMsg = DataToBytes("type@=mrkl/");
            while (true)
            {
                tcpClient.Send(aliveMsg);
                Thread.Sleep(40000);
            }
        }
    }
}

　　

2: another - (not test)

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Security.Cryptography;
using System.Text;
using System.Threading;
using System.Threading.Tasks;

namespace C1
{
    class Program
    {
        public static string RoomID;
        static void Main(string[] args)
        {
            Console.Title = "斗鱼弹幕小助手";
            Console.ForegroundColor = ConsoleColor.Gray;
            // 设定服务器IP地址
            IPAddress ip = IPAddress.Parse("115.231.96.19");
            Socket clientSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
            try
            {
                clientSocket.Connect(new IPEndPoint(ip, 12604)); //配置服务器IP与端口
                Console.WriteLine("连接服务器成功");
                Console.WriteLine("请输入房间ID号");
                RoomID = Console.ReadLine();

                string send = "type@=loginreq/username@=visitor1687994/password@=1234567890123456/roomid@=" + RoomID + "/dfl@=sn@AA=105@ASss@AA=1/ct@=0/ver@=20180413/aver@=2018051611/";
                MsgBody sBody = new MsgBody(send);
                clientSocket.Send(sBody.ToByteArray());
                Console.WriteLine("向服务器发送消息：{0}" + send);
            }
            catch (Exception e)
            {
                Console.WriteLine("连接服务器失败，请按回车键退出！");
                return;
            }
            //通过clientSocket接收数据  

            Thread receiveThread = new Thread(reMsg);
            receiveThread.Start(clientSocket);
            Thread receiveThread2 = new Thread(SendMsg);
            receiveThread2.Start(clientSocket);
            Console.ReadLine();
        }
        /// <summary>
        /// 取中间值
        /// </summary>
        /// <param name="allStr"></param>
        /// <param name="firstStr"></param>
        /// <param name="lastStr"></param>
        /// <returns></returns>
        public static string GetStringMid(string allStr, string firstStr, string lastStr)
        {
            try
            {
                int index1 = allStr.IndexOf(firstStr);
                int index2 = allStr.IndexOf(lastStr, index1 + firstStr.Length);

                if (index1 < 0 || index2 < 0)
                {
                    return "";
                }

                index1 = index1 + firstStr.Length;
                index2 = index2 - index1;

                if (index1 < 0 || index2 < 0)
                {
                    return "";
                }
                return allStr.Substring(index1, index2);
            }
            catch (Exception ex)
            {

                throw;
            }
        }

        static void reMsg(object socket)
        {
            byte[] saveArr = new byte[0];
            byte[] result = new byte[1024];
            while (true)
            {
                try
                {
                    int receiveLength = ((Socket)socket).Receive(result);
                    if (receiveLength > 0)
                    {
                        if (saveArr.Length > 0)
                        {
                            byte[] arr = new byte[saveArr.Length + receiveLength];
                            Array.Copy(saveArr, 0, arr, 0, saveArr.Length);
                            Array.Copy(result, 0, arr, saveArr.Length, receiveLength);
                            result = arr;
                            receiveLength = result.Length;
                        }
                        int head = 0;
                        if (result.Length < 4)
                        {
                            saveArr = new byte[receiveLength];
                            Array.Copy(result, 0, saveArr, 0, saveArr.Length);
                            continue;
                        }
                        head = BitConverter.ToInt32(SubByte(result, 0, 4), 0);

                        string str = string.Empty;
                        if (head > (receiveLength - 4))
                        {
                            saveArr = new byte[result.Length];
                            Array.Copy(result, 0, saveArr, 0, saveArr.Length);
                            continue;
                        }
                        int index = 0;
                        do
                        {
                            MsgBody reBodyMsg = new MsgBody(result.Take(head + 4).ToArray());
                            str = reBodyMsg.BodyData;
                            index = head + 4;
                            if (str.IndexOf("keeplive") != -1)
                            {
                                //心跳
                            }
                            else if (str.IndexOf("type@=chatmsg") != -1)
                            {
                                string txt = GetStringMid(str, "txt@=", "/");
                                string name = "[" + GetStringMid(str, "nn@=", "/") + "]";

                                //name = name.PadRight(15);
                                name = name + new string(' ', 30 - Encoding.Default.GetByteCount(name));
                                name = string.Format("{0}发送弹幕", name);
                                name = name + new string(' ', 50 - Encoding.Default.GetByteCount(name));
                                Console.WriteLine(name + txt);

                            }
                            else if (str.IndexOf("type@=uenter") != -1)
                            {
                                str = "欢迎[" + GetStringMid(str, "nn@=", "/") + "]";

                                str = str + new string(' ', 30 - Encoding.Default.GetByteCount(str));

                                Console.WriteLine("{0}进入直播间", str);
                            }
                            else if (str.IndexOf("loginres") != -1)
                            {
                                string send = "type@=joingroup/rid@=" + RoomID + "/gid@=-9999/";
                                MsgBody sBody = new MsgBody(send);
                                ((Socket)socket).Send(sBody.ToByteArray());
                            }
                            else
                            {
                                // Console.WriteLine("接收服务器消息：{0}", str);
                            }
                            if (index < receiveLength)
                            {
                                try
                                {
                                    result = SubByte(result, index, receiveLength - index);
                                    if (result.Length <= 12)
                                    {
                                        saveArr = new byte[result.Length];
                                        Array.Copy(result, 0, saveArr, 0, saveArr.Length);
                                        break;
                                    }
                                    head = BitConverter.ToInt32(SubByte(result, 0, 4), 0);
                                    if (result.Length < (head + 4))
                                    {
                                        saveArr = new byte[result.Length];
                                        Array.Copy(result, 0, saveArr, 0, saveArr.Length);
                                        break;
                                    }
                                    receiveLength = result.Length;
                                    continue;
                                }
                                catch (Exception ex)
                                {

                                    throw;
                                }
                            }
                            saveArr = new byte[0];
                            break;
                        } while (true);

                    }

                }
                catch (Exception ex)
                {

                    throw;
                }
            }
        }

        /// <summary>
        /// 心跳
        /// </summary>
        /// <param name="socket"></param>
        static void SendMsg(object socket)
        {
            Socket sk = (Socket)socket;
            while (true)
            {
                //
                byte[] b = new byte[] { 0x54, 0x00, 0x00, 0x00, 0x54, 0x00, 0x00, 0x00, 0xB1, 0x02, 0x00, 0x00 };
                List<byte> sendData = new List<byte>(b);
                sendData.AddRange(Encoding.UTF8.GetBytes("type@=keeplive/tick@=" + GetCurrentTimeUnix() + "/vbw@=0/k@=23d36a0db24136aabee566e0aa748344/"));
                sendData.Add(0x00);
                sk.Send(sendData.ToArray());
                Thread.Sleep(15000);
            }
        }

        /// <summary>
        /// 获取当前本地时间戳
        /// </summary>
        /// <returns></returns>
        public static long GetCurrentTimeUnix()
        {
            TimeSpan cha = (DateTime.Now - TimeZone.CurrentTimeZone.ToLocalTime(new System.DateTime(1970, 1, 1)));
            long t = (long)cha.TotalSeconds;
            return t;
        }
        /// <summary>
        /// 字符串MD5
        /// </summary>
        /// <param name="input"></param>
        /// <returns></returns>
        public static string md5(string input)
        {
            //chenwancheng0true1
            byte[] buffer = MD5.Create().ComputeHash(Encoding.GetEncoding("ISO-8859-1").GetBytes(input));
            return binl2hex(buffer);
        }

        public static string binl2hex(byte[] buffer)
        {
            StringBuilder builder = new StringBuilder();
            for (int i = 0; i < buffer.Length; i++)
            {
                builder.Append(buffer[i].ToString("x2"));
            }
            return builder.ToString().ToLower();
        }
        /// <summary>
        /// 截取字节数组
        /// </summary>
        /// <param name="srcBytes">要截取的字节数组</param>
        /// <param name="startIndex">开始截取位置的索引</param>
        /// <param name="length">要截取的字节长度</param>
        /// <returns>截取后的字节数组</returns>
        public static byte[] SubByte(byte[] srcBytes, int startIndex, int length)
        {
            System.IO.MemoryStream bufferStream = new System.IO.MemoryStream();
            byte[] returnByte = new byte[] { };
            if (srcBytes == null) { return returnByte; }
            if (startIndex < 0) { startIndex = 0; }
            if (startIndex < srcBytes.Length)
            {
                if (length < 1 || length > srcBytes.Length - startIndex) { length = srcBytes.Length - startIndex; }
                bufferStream.Write(srcBytes, startIndex, length);
                returnByte = bufferStream.ToArray();
                bufferStream.SetLength(0);
                bufferStream.Position = 0;
            }
            bufferStream.Close();
            bufferStream.Dispose();
            return returnByte;
        }

    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace C1
{
    public class MsgBody
    {
        public MsgBody()
        {

        }
        public MsgBody(string str)
        {
            this.BodyData = str;
            ToByteArray();
        }
        public MsgBody(byte[] b)
        {
            this.Source = b;
            SetValues();
        }
        public int DataLength;
        public byte[] DataLength_Byte;

        public int DataLength_2;
        public byte[] DataLength_2_Byte;

        public int Cmd = 689;
        public byte[] Cmd_Byte;

        public string BodyData;
        public byte[] BodyData_Byte;

        public byte End = 0;

        public byte[] Source;

        public byte[] ToByteArray()
        {
            BodyData_Byte = Encoding.UTF8.GetBytes(BodyData);
            Cmd_Byte = BitConverter.GetBytes(Cmd);
            DataLength = DataLength_2 = BodyData_Byte.Length + Cmd_Byte.Length + 4 + 1;
            DataLength_Byte = BitConverter.GetBytes(DataLength);
            DataLength_2_Byte = BitConverter.GetBytes(DataLength_2);

            byte[] result = new byte[DataLength + 4];
            Array.Copy(DataLength_Byte, 0, result, 0, 4);
            Array.Copy(DataLength_2_Byte, 0, result, 4, 4);
            Array.Copy(Cmd_Byte, 0, result, 8, 4);
            Array.Copy(BodyData_Byte, 0, result, 12, BodyData_Byte.Length);
            Source = new byte[result.Length];
            Array.Copy(result, 0, Source, 0, result.Length);
            return result;
        }

        public void SetValues()
        {
            try
            {
                DataLength_Byte = Program.SubByte(Source, 0, 4);
                DataLength_2_Byte = Program.SubByte(Source, 4, 4);
                Cmd_Byte = Program.SubByte(Source, 8, 4);
                BodyData_Byte = Program.SubByte(Source, 12, Source.Length - 13);
                End = Program.SubByte(Source, Source.Length - 2, 1)[0];

                DataLength = BitConverter.ToInt32(DataLength_Byte, 0);
                DataLength_2 = BitConverter.ToInt32(DataLength_2_Byte, 0);
                Cmd = BitConverter.ToInt32(Cmd_Byte, 0);
                BodyData = Encoding.UTF8.GetString(BodyData_Byte);
            }
            catch (Exception ex)
            {

                throw;
            }
        }
    }
}