/// <summary>
/// 异步发送操作完成时调用此方法
/// 该方法在套接字上发出另一个接收以读取任何附加信息
/// 从客户端发送的数据
/// </summary>
/// <param name="e"></param>
private void ProcessSend(SocketAsyncEventArgs e)
{
if (e.SocketError == SocketError.Success)
{
AsyncUserToken token = e.UserToken as AsyncUserToken;// 获取客户端信息
try
{
// 读取从客户端发送的下一个数据块
bool willRaiseEvent = token.Socket.ReceiveAsync(e);
if (!willRaiseEvent)
{
ProcessReceive(e);// 如果数据不为空就发送给客户端
}
}
catch (Exception ex)
{
log.AddLog(LogType.Error, $"在异步发送完成时出错!\r\n客户端地址:{token.IPAddress}\r\n错误信息:{ex.Message}");
}
}
else
{
CloseClientSocket(e);
}
}
/// <summary>
/// 发送数据到指定对象
/// </summary>
/// <param name="token">用户Token信息,以此来辨识用户</param>
/// <param name="message">要发送的信息</param>
internal void SendMessage(AsyncUserToken token, Byte[] message)
{
if (token == null || token.Socket == null || !token.Socket.Connected)
{
return;
}
try
{
Byte[] buff = new Byte[message.Length + 4]; // 简单协议发送
Byte[] len = BitConverter.GetBytes(message.Length);
Array.Copy(len, buff, 4);
Array.Copy(message, 0, buff, 4, message.Length);
SocketAsyncEventArgs sendArgs = new SocketAsyncEventArgs {
UserToken = token
};
sendArgs.SetBuffer(message, 0, message.Length); // 数据放入缓冲池
token.Socket.SendAsync(sendArgs); // 发送数据
}
catch (Exception ex)
{
log.AddLog(LogType.Error, $"发送数据到指定对象时出错!\r\n客户端地址:{token.IPAddress}\r\n错误信息:{ex.Message}");
}
}
