【原创】c# socket 粘包 其实。。。

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         private static Dictionary<string, Packet> cache = new Dictionary<string, Packet>();
         private static Dictionary<string, object> lockers = new Dictionary<string, object>();
         public List<pkReturn> Package(ChannelReceiveEventArgs e)
         {

             byte[] data = new byte[e.Data.Count];
             Buffer.BlockCopy(e.Data.Array, , data, , e.Data.Count);
             int leng = e.Data.Count;

             if (!lockers.ContainsKey(e.Channel.ID)) lockers[e.Channel.ID] = new object(); //创建锁
             lock (lockers[e.Channel.ID])
             {
                 if (data != null)
                 {
                     string id = e.Channel.ID;
                     try
                     {
                         if (cache.ContainsKey(id))
                         {//如果客户端ID存在，就把接收到的字节，和之前的字节合起来
                             cache[id].BufferTemp = coder.UnionBytes(cache[id].BufferTemp, data);
                         }
                         else
                         {//如果客户端ID不存在集合内，就新建一个放入集合
                             Packet pk = new Packet();
                             cache[id] = pk;
                             cache[id].BufferTemp = new byte[leng];
                             Buffer.BlockCopy(data, , cache[id].BufferTemp, , data.Length);//拷贝数据
                         }
                         //循环处理包
                         List<pkReturn> lists = new List<pkReturn>();
                         cache[id].BufferCom = null;
                         do
                         {
                             pkReturn model = new pkReturn();
                             if (cache[id].BufferTemp.Length >= ) //1-4字节包大小  4-6两字节指令
                             {
                                 byte[] sizetemp = new byte[];//大小
                                 Buffer.BlockCopy(cache[id].BufferTemp, , sizetemp, , );
                                 int size = (int)BitConverter.ToUInt32(sizetemp, );
                                 size = size + ;
                                 byte[] cmd = new byte[];//指令
                                 Buffer.BlockCopy(cache[id].BufferTemp, , cmd, , );
                                 if (size <  && size > )
                                 {
                                     model.PkSize = size;
                                     model.Cmd = (int)BitConverter.ToUInt32(cmd, );
                                 }
                                 else
                                 {
                                     e.Channel.Dispose();
                                     Remove(id);//小于0 有问题 要清理掉客户端
                                     lists.Clear();
                                     break;
                                 }
                                 //解析包
                                 byte[] tempbytes = new byte[size];
                                 if (size < cache[id].BufferTemp.Length)
                                 {

                                     Buffer.BlockCopy(cache[id].BufferTemp, , tempbytes, , size);//拷贝一个完整包

                                     byte[] temp = new byte[cache[id].BufferTemp.Length - size];//保存剩下的字节
                                     Buffer.BlockCopy(cache[id].BufferTemp, size, temp, , cache[id].BufferTemp.Length - size);
                                     cache[id].BufferTemp = temp;

                                     model.Bytes = coder.UnifyDecrypt(tempbytes);//对完整包解密
                                     lists.Add(model);
                                 }
                                 else if (size == cache[id].BufferTemp.Length)
                                 {
                                     Buffer.BlockCopy(cache[id].BufferTemp, , tempbytes, , size);//根据获得大小拷贝字节
                                     model.Bytes = coder.UnifyDecrypt(tempbytes);//对完整包解密
                                     lists.Add(model);
                                     cache[id].BufferTemp = null;//清空数据缓冲区
                                     break;
                                 }
                                 else if (size > cache[id].BufferTemp.Length)
                                 {//如果包头标记大小大于缓冲区大小，跳出
                                     break;
                                 }
                                 else
                                 {
                                     Console.WriteLine("任何条件都不符合");
                                 }

                             }
                             else
                             {
                                 break;
                             }
                         } while (true);
                         return lists;
                     }
                     catch (Exception ex)
                     {
                         Remove(id);
                         e.Channel.Dispose();
                         Console.WriteLine("分包解析函数异常:" + ex.Message + " 定位:" + ex.StackTrace);
                         throw new ArgumentException("分包解析函数异常 定位:"+ex.Message);
                     }
                 }
                 else
                 {
                     Console.WriteLine("data 为null");
                     throw new ArgumentException("分包解析函数异常 data 为null");
                     //return null;
                 }
             }
         }