Re: Hi All, I am a newbee for cherrypy. My question is how to realize a link limitation for cherry?

Hi Tim,
     Thanks for your kindly help.
     My request is to realize the function like that:
     There is a Linux Distro installer ,with it we can install a specify 
Linux Distro, just like installation process of Redhat and ubuntu, you need 
to select the disk, set the network ,set the user id and passwd and then 
begin to the installation process. 
     Now we are working about putting this installer to web, so we can get 
access from browser.It will be more convenient. For example, I can get 
access to "http://45.37.251.102" , select the parameters : disk, network , 
user id and passwd just like in the origin installer.After set the 
parameters , begin installation.  So I put the  questions here, I need to 
realize the function "forbid multiple http session" , because if multiple 
session connecting to the server, one session will affect another session. 
So at the same time of the installation process, I just want a single 
session to server.
    By using http keep-alive ,could  I solve the problem? 

在 2016年4月8日星期五 UTC+8上午12:51:09，Tim Roberts写道：
>
> Zhao Kevin wrote: 
> > 
> >        I am a new comer for cherrypy. It is really a convenient web 
> > frame ~ 
> > I want to realize a function as below: 
> >        After the cherry https server start , in the first browse , 
> > type into the ip and get access to the  server. 
> >        In another browse , type into the ip address , the server 
> > reject the another access until the first access is over. 
> >        So, I want to set the server only allow once connection at the 
> > same time ... How can I realize it ? Is there any configuration 
> > parameters I should to set ? 
>
> That's simply not how HTTP works.  When a browser makes a request, the 
> server sends back a page of HTML, typically within less then a second, 
> and then the connection is terminated.  The browser will eventually 
> display what it received, and fetch other resources like stylesheets and 
> images, but those are all totally separate requests. 
>
> It is a common mistake among beginners to think that the connection to 
> the server is maintained as long as the page is displayed (I know my 
> wife believes that), but it's not true.  There's a quick connect, 
> transfer, and disconnect, then the rest happens in the browser without a 
> connection. 
>
> So, it doesn't make any sense to allow one connection at a time.  I 
> suppose you could have the concept of an "active login" where no one 
> else could log in while the first user was there, but you'd have to 
> implement that yourself, by remembering the currently logged in user in 
> some common location.  But remember, there is no guarantee that you're 
> going to get a logout request.  If the user logs in, and then switches 
> to Google, your site would be locked out. 
>
> -- 
> Tim Roberts, [email protected] <javascript:> 
> Providenza & Boekelheide, Inc. 
>
>

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