/// <summary>
/// 制作完整的数据包（包头+包体）
/// </summary>
/// <param name="_data"></param>
/// <returns></returns>
private byte[] MakeAllData(byte[] _data)
{
byte[] retBuffer = null;
using (MMOMemoryStream ms = new MMOMemoryStream())
{
//ushort占两个字节，作为包头的长度
//将长度转换成byte，写入数据流中
ms.WriteUshort((ushort)_data.Length);
//将数据写入数据流
ms.Write(_data, 0, _data.Length);
//读取
retBuffer = ms.ToArray();
}
return(retBuffer);
}
/// <summary>
/// 异步数据接收的回调（实现循环）
/// </summary>
/// <param name="ar"></param>
private void ReceiveCallBack(IAsyncResult ar)
{
try
{
//完成接收，数据才算完整
int len = m_Socket.EndReceive(ar);
if (len > 0)
{
//已经接收到数据
//每次接收到数据都放在尾部
m_ReceiveMS.Position = m_ReceiveMS.Length;
//把指定长度的字节写入数据流
m_ReceiveMS.Write(m_ReceiveBuffer, 0, len);
//拆包
//因为包头占有两个字节
if (m_ReceiveMS.Length > 2)
{
//循环拆包
while (true)
{
//定位在数据包最开始的位置
m_ReceiveMS.Position = 0;
//获取包体的长度(就是包头的值)
int curMsgLen = m_ReceiveMS.ReadUshort();
//读取整个数据包
int curAllMsgLen = 2 + curMsgLen;
//数据流的长度大于整个数据包的长度时，说明数据完整
if (m_ReceiveMS.Length >= curAllMsgLen)
{
//定义一个包体的byte[]数组
byte[] buffer = new byte[curMsgLen];
//定位在2的位置（包体开始的位置）
m_ReceiveMS.Position = 2;
//Read从流中读取，长度为包体的长度
m_ReceiveMS.Read(buffer, 0, curMsgLen);
//buffer是最终读取的数据
using (MMOMemoryStream ms = new MMOMemoryStream(buffer))
{
string data = ms.ReadUTF8String();
Console.WriteLine(data);
}
//==============处理剩余字节==============
//剩余字节的长度
int remainLen = (int)m_ReceiveMS.Length - curAllMsgLen;
//有剩余的字节长度
if (remainLen > 0)
{
//设定在上一个数据包的尾部
m_ReceiveMS.Position = curAllMsgLen;
//剩余的字节数组
byte[] remainBuffer = new byte[remainLen];
//将剩余的字节从流中读取
m_ReceiveMS.Read(remainBuffer, 0, remainLen);
//清空数据流
m_ReceiveMS.Position = 0;
m_ReceiveMS.SetLength(0);
//重新写入数据流
m_ReceiveMS.Write(remainBuffer, 0, remainLen);
//剩余空间不需要使用，应当释放
remainBuffer = null;
}
//无剩余的字节长度
else
{
//清空数据流
m_ReceiveMS.Position = 0;
m_ReceiveMS.SetLength(0);
break;
}
}
//数据不完整，不拆包，等待下次数据写入
else
{
break;
}
}
}
//进行下一次数据包的接收
ReceiveMessage();
}
else
{
Console.WriteLine("客户端{0}断开连接", m_Socket.RemoteEndPoint.ToString());
//集合中应当移除关闭连接的role
RoleManager.Instance.AllRole.Remove(m_Role);
Console.WriteLine("当前角色集合的长度为：{0}", RoleManager.Instance.AllRole.Count);
}
}
catch (Exception ex)
{
Console.WriteLine("客户端{0}断开连接", m_Socket.RemoteEndPoint.ToString());
//集合中应当移除关闭连接的role
RoleManager.Instance.AllRole.Remove(m_Role);
Console.WriteLine("当前角色集合的长度为：{0}", RoleManager.Instance.AllRole.Count);
}
}