通过获取tcpserver.getonlinecontextlist来得到在线列表

procedure TfrmMain.btn_refreshClick(Sender: TObject);
var
lvList:TList;
i: Integer;
lvClient:TMyClientContext;
lvItem:TListItem;
begin
lstClientINfo.Items.Clear;
lvList:=TList.Create;
try
FTcpServer.getOnlineContextList(lvList);
for i := 0 to lvList.Count - 1 do
begin
lvClient := TMyClientContext(lvList[i]);
lvItem := lstClientINfo.Items.Add;
lvItem.Caption :=IntToStr(i+1);
try
lvItem.SubItems.Add(TChatSession(lvClient.Data).UserID);
except on E: Exception do
lvItem.SubItems.Add('未登录');
end;
try
lvItem.SubItems.Add(TChatSession(lvClient.Data).UserMac);
except on E: Exception do
lvItem.SubItems.Add('未知');
end;
// lvItem.SubItems.Add('');
lvItem.SubItems.Add(lvClient.RemoteAddr);
lvItem.SubItems.Add(IntToStr(lvClient.RemotePort));
// if TChatSession(lvClient.Data).UserID<>'' then
//
// lvItem.SubItems.Add(TChatSession(lvClient.Data).UserID)
// else
// lvItem.SubItems.Add('');
lvItem.SubItems.Add(IntToStr(lvClient.SocketHandle));
lvItem.SubItems.Add(lvClient.StateINfo);
end;

finally
lvList.Free;
end;
end;