private void timer1_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
{
try
{
List <AsyncUserTokenInfo> tokens = listener.OnlineUserToken;
DateTime limit = DateTime.Now - new TimeSpan(0, 5, 0);
List <AsyncUserTokenInfo> overtime = tokens.Where(q => q.FreshTime < limit).ToList();
if (overtime.Count == 0)
{
return;
}
StringBuilder sb = new StringBuilder();
sb.Append(string.Format("检测到 {0} 个连接超时，准备进行主动断开", overtime.Count));
sb.Append("\r\n");
AppendLog(sb.ToString());
foreach (var item in overtime)
{
listener.CloseClientSocket(item.UID);
}
}
catch (Exception ex)
{
LogHelper.WriteLog("主动断开连接时出错", ex.Message, ex.StackTrace);
}
}
private void MsgHandler_OnIPChanged(string UID)
{
try
{
listener.CloseClientSocket(UID);
}
catch (Exception)
{
LogHelper.WriteLog("关闭连接时出错");
}
}
private void UpdateCache(string client, string uid)
{
DeviceRow device = _devices.Where(q => q.ClientCode.Equals(client)).FirstOrDefault();
//_online.TryGetValue(client, out _uid);
if (device != null && !string.IsNullOrEmpty(device.UID) && device.UID.Equals(uid))
{
return;
}
if (device == null)
{
//_online.TryAdd(client, uid);
//新增设备列表记录
AsyncUserTokenInfo info = _listener.OnlineUserToken.Where(q => q.UID.Equals(uid)).FirstOrDefault();
if (info != null)
{
AddDevice(new DeviceRow()
{
ClientCode = client,
UID = uid,
ClientIP = info.Remote.Address.ToString(),
InTime = info.ConnectTime.ToString(),
ModifyTime = info.FreshTime.ToString()
});
}
//数据库更新上线时间
ConnectionHelper.OnLine(client);
}
else
{
string _uid = device.UID;
//_online.TryUpdate(client, uid, _uid);
device.UID = uid;
//如果IP地址变化，则关闭之前的连接
_listener.CloseClientSocket(_uid);
}
}
