private void HandleMessage()
{
while (true)
{
foreach (var key in dicReceive.Keys.ToList <int>())
{
ReceiveModel model = dicReceive[key];
if (model.totalBuffSec == model.indexByteData.Count)
{
//说明数据报接收完成
byte[] dataAll = new byte[model.lengthBuff];
int offIndex = 0;
for (int i = 0; i < model.totalBuffSec; i++)
{
//string msg1 = Encoding.Default.GetString(model.indexByteData[i]);
//Console.WriteLine(i+" -msg=" + msg1);
//从0开始-总长度，遍历 合并所有数据块
Array.Copy(model.indexByteData[i], 0, dataAll, offIndex, model.indexByteData[i].Length);
offIndex += model.indexByteData[i].Length;
}
string msg = Encoding.Default.GetString(dataAll);
Console.WriteLine("结果是：" + msg);
dicReceive.Remove(key);
}
}
}
}
private void EndReceiveFromCallback(IAsyncResult iar)
{
Console.WriteLine("收到一次");
State state = iar.AsyncState as State;
Socket socket = state.Socket;
int byteRead = socket.EndReceiveFrom(iar, ref state.RemoteEP);
try
{
/*
* 数据包id 片段数量 索引 数据区域
* 0_________4_________8__________12______________________________
*/
int packetMetaID = BitConverter.ToInt32(state.Buffer, 0);
int totalBuffSec = BitConverter.ToInt32(state.Buffer, 4);
Console.WriteLine("packetMetaID=" + packetMetaID + " 和 totalBuffSec=" + totalBuffSec);
int lengthIndex = BitConverter.ToInt32(state.Buffer, 8);
byte[] data = new byte[byteRead - headInfoLength];
Array.Copy(state.Buffer, headInfoLength, data, 0, byteRead - headInfoLength);
if (dicReceive.ContainsKey(packetMetaID))
{
if (dicReceive[packetMetaID].indexByteData.ContainsKey(lengthIndex))
{
}
else
{
dicReceive[packetMetaID].lengthBuff += data.Length;
dicReceive[packetMetaID].indexByteData.Add(lengthIndex, data);
}
}
else
{
ReceiveModel model = new ReceiveModel();
model.packetMetaID = packetMetaID;
model.totalBuffSec = totalBuffSec;
model.lengthBuff += data.Length;
Dictionary <int, byte[]> dic = new Dictionary <int, byte[]>();
dic.Add(lengthIndex, data);
model.indexByteData = dic;
dicReceive.Add(packetMetaID, model);
}
byte[] backSend = new byte[headInfoLength];
Array.Copy(state.Buffer, 0, backSend, 0, headInfoLength); //前12位字节数，发送给客户端
socket.SendTo(backSend, state.RemoteEP); //向客户端发送信息
}
catch (Exception e)
{
Console.WriteLine("发生异常！异常信息：");
Console.WriteLine(e.Message);
}
finally
{
//非常重要：继续异步接收
socket.BeginReceiveFrom(
state.Buffer, 0, state.Buffer.Length,
SocketFlags.None,
ref state.RemoteEP,
EndReceiveFromCallback,
state);
}
}
