/// <summary>
/// 用预分配的可重用缓冲区和上下文对象初始化服务器.
/// </summary>
public void Init()
{
// 为所有的I/O操作分配一个大的字节缓冲区.目的是防止内存碎片的产生
m_bufferManager.InitBuffer();
// 可重用的SocketAsyncEventArgs,用于重复接受客户端使用
SocketAsyncEventArgs readWriteEventArg;
AsyncUserToken token;
// 预分配一个 SocketAsyncEventArgs 对象池
// 预分配SocketAsyncEventArgs读对象池
for (int i = 0; i < m_numConnections; i++)
{
// 预分配一个 可重用的SocketAsyncEventArgs 对象
//readWriteEventArg = new SocketAsyncEventArgs();
// 创建token时同时创建了一个和token关联的用于读数据的SocketAsyncEventArgs对象,
// 并且创建的SocketAsyncEventArgs对象的UserToken属性值为该token
token = new AsyncUserToken();
//token.ReadEventArgs = readWriteEventArg;
//readWriteEventArg.Completed += new EventHandler<SocketAsyncEventArgs>(IO_Completed);
// 注册一个SocketAsyncEventArgs完成事件
token.ReadEventArgs.Completed += new EventHandler <SocketAsyncEventArgs>(IO_Completed);
//readWriteEventArg.UserToken = new AsyncUserToken();
// 从缓冲区池中分配一个字节缓冲区给 SocketAsyncEventArg 对象
//m_bufferManager.SetBuffer(readWriteEventArg);
m_bufferManager.SetBuffer(token.ReadEventArgs);
//((AsyncUserToken)readWriteEventArg.UserToken).SetReceivedBytes(readWriteEventArg.Buffer, readWriteEventArg.Offset, 0);
//设定接收缓冲区及偏移量
token.SetBuffer(token.ReadEventArgs.Buffer, token.ReadEventArgs.Offset, token.ReadEventArgs.Count);
// 添加一个 SocketAsyncEventArg 到池中
//m_readPool.Push(readWriteEventArg);
m_readPool.Push(token.ReadEventArgs);
}
// 预分配SocketAsyncEventArgs写对象池
for (int i = 0; i < m_numConnections; i++)
{
// 预分配一个 可重用的SocketAsyncEventArgs 对象
readWriteEventArg = new SocketAsyncEventArgs();
readWriteEventArg.Completed += new EventHandler <SocketAsyncEventArgs>(IO_Completed);
readWriteEventArg.UserToken = null;
// 从缓冲区池中分配一个字节缓冲区给 SocketAsyncEventArg 对象
m_bufferManager.SetBuffer(readWriteEventArg);
//readWriteEventArg.SetBuffer(null, 0, 0);
// 添加一个 SocketAsyncEventArg 到池中
m_writePool.Push(readWriteEventArg);
}
}