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Winform

.net socket chatting sample (2) SocketCommon

by 캡틴노랑이 2021. 4. 15.
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Server Source

 

SocketCommon Project

 

 

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;
 
namespace SocketCommon
{
    public class AllowAllAssemblyVersionsDeserializationBinder : System.Runtime.Serialization.SerializationBinder
    {
        public override Type BindToType(string assemblyName, string typeName)
        {
            Type typeToDeserialize = null;
            String currentAssembly = Assembly.GetExecutingAssembly().FullName;
            assemblyName = currentAssembly;
            typeToDeserialize = Type.GetType(string.Format("{0},{1}", typeName, assemblyName));
            return typeToDeserialize;
        }
    }
}

 

 

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using System;
using System.Collections.Generic;
using System.Text;
 
namespace SocketCommon
{
    public static class DictionaryExtention
    {
        public static Dictionary<string, string> InsertAtFirst(this Dictionary<string, string> original, string insertAtFirstKey, string insertAtFirstValue, int position)
        {
            Dictionary<string, string> dic = new Dictionary<string, string>();
            int i = 0;
 
            foreach (KeyValuePair<string, string> pair in original)
            {
                if (i == position)
                    dic.Add(insertAtFirstKey, insertAtFirstValue);
 
                dic.Add(pair.Key, pair.Value);
 
                i++;
            }
 
            return dic;
        }
    }
}

 

 

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using System;
using System.Collections.Generic;
using System.Data;
using System.IO;
using System.Linq;
using System.Runtime.Serialization.Formatters.Binary;
using System.Text;
using System.Threading.Tasks;
using Newtonsoft.Json.Linq;
 
namespace SocketCommon
{
    [Serializable]
    public class PacketData
    {
        public PacketType packetType { get; set; }
        public string SenderID { get; set; }
        public string ReceiverID { get; set; }
        public string stringData { get; set; }
        public Dictionary<string, string> UsersList { get; set; }
 
        public static byte[] Serialize(Object data)
        {
            try
            {
                MemoryStream ms = new MemoryStream(1024 * 2); // packet size will be maximum 4k
                //MemoryStream ms = new MemoryStream(1024); // packet size will be maximum 4k
                BinaryFormatter bf = new BinaryFormatter();
                bf.Serialize(ms, data);
                return ms.ToArray();
            }
            catch (Exception e)
            {
                return null;
            }
        }
 
        public static Object Deserialize(byte[] data)
        {
            try
            {
                MemoryStream ms = new MemoryStream(1024 * 2);
                //MemoryStream ms = new MemoryStream(1024);
                ms.Write(data, 0, data.Length);
 
                ms.Position = 0;
                BinaryFormatter bf = new BinaryFormatter();
                bf.Binder = new AllowAllAssemblyVersionsDeserializationBinder();
                Object obj = bf.Deserialize(ms);
                ms.Close();
                return obj;
            }
            catch(Exception e)
            {
                return null;
            }
        }
 
        public static byte[] JsonSerialize(Object data)
        {
            try
            {
                MemoryStream ms = new MemoryStream(1024); // packet size will be maximum 4k               
                BinaryFormatter bf = new BinaryFormatter();
                string msg = JsonCreate((PacketData)data);
 
                bf.Serialize(ms, msg);
                return ms.ToArray();
            }
            catch (Exception e)
            {
                return null;
            }
        }
 
        public static string JsonCreate(PacketData data)
        {
            var json = new JObject();
 
            json.Add("packetType", data.packetType.ToString());
            json.Add("SenderID", data.SenderID);
            json.Add("ReceiverID", data.ReceiverID);
            json.Add("stringData", data.stringData);
 
            var jarr = new JArray();
            if (data.UsersList != null)
            {
                 
                foreach (var dic in data.UsersList)
                {
                    var j = new JObject();
                    j.Add("Key", dic.Key);
                    j.Add("Value", dic.Value);
                    jarr.Add(j);
                }
                json.Add("UsersList", jarr); //JObject에 추가 할 때는 이렇게 해야됨.
            }
            return json.ToString();
        }
 
        public static Object JsonDeserialize(byte[] data)
        {
            try
            {               
                MemoryStream ms = new MemoryStream(1024);
                ms.Write(data, 0, data.Length);
 
                ms.Position = 0;
                BinaryFormatter bf = new BinaryFormatter();
                bf.Binder = new AllowAllAssemblyVersionsDeserializationBinder();
                Object obj = bf.Deserialize(ms);
                ms.Close();
 
                Object toPacketData = PacketDataCreate((string)obj);
                                
                return toPacketData;
            }
            catch (Exception e)
            {
                return null;
            }
        }
 
        public static PacketData PacketDataCreate(string data)
        {
            PacketData pd = new PacketData();
            pd.UsersList = new Dictionary<string, string>();
            JObject json = new JObject();
             
            try
            {
                if(data != "")
                {
                    json = JObject.Parse(data);
                    pd.packetType = ChangePackageType(json["packetType"].ToString());
                    pd.SenderID = json["SenderID"].ToString();
                    pd.ReceiverID = json["ReceiverID"].ToString();
                    pd.stringData = json["stringData"].ToString();
 
                    foreach(var d in json["UsersList"])
                        pd.UsersList.Add(d["Key"].ToString(), d["Value"].ToString());                   
                }
 
                return pd;
            }
            catch (Exception e)
            {
                return pd;
            }
        }
 
        public static PacketType ChangePackageType(string packageType)
        {
            PacketType pt;
            pt = PacketType.TextData;
 
            switch (packageType)
            {
                case "TextData":
                    pt = PacketType.TextData;
                    break;
                case "FileData":
                    pt = PacketType.FileData;
                    break;
                case "SysMessage":
                    pt = PacketType.SysMessage;
                    break;
                case "UsersInfo":
                    pt = PacketType.UsersInfo;
                    break;
                case "Disconnect":
                    pt = PacketType.Disconnect;
                    break;
            }
            return pt;
        }                            
                                       
    }
}

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<code>
 
</code>

 

 

 

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
 
namespace SocketCommon
{
    public enum PacketType
    {
 
        TextData            //텍스트
        , FileData          //파일
        , SysMessage        //시스템 메세지
        , UsersInfo         //사용자 정보 요청
        , Disconnect        //서버가 접속 끓을 때.
 
 
    }
}

 

 

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using System;
using System.Collections.Generic;
using System.Text;
using System.Net;
using System.Net.Sockets;
 
namespace SocketCommon
{
    public static class SocketExtention
    {
        public static bool IsConnected(this Socket socket)
        {
            try
            {
                return !((socket.Poll(1, SelectMode.SelectRead) && socket.Available == 0) || !socket.Connected);
            }
            catch (SocketException) { return false; }
        }
    }
}

 

 

 

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Sockets;
using System.Text;
using System.Threading.Tasks;
 
namespace SocketCommon
{
    public class StateObject
    {
        public Socket workSocket = null;
        //public const int BufferSize = 1024 * 2;   //class
        public const int BufferSize = 1024;         //json
        public byte[] buffer = new byte[BufferSize];
        public StringBuilder sb = new StringBuilder();
        public string userID = "";
    }
}

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