C#•3y ago

HttpListener

I'm currently writing an extreme lightweight HTTP server in PowerShell script(which very obviously utilizes the .NET framework). I want to figure out how to check if a connection is still alive before dispatching the response with HttpListenerResponse.Close(), because if i try to write to a dead connection it obviously throws errors, and i'd like to handle this gracefully before the catch block needs to trigger

TiminatorOP•11/14/23, 2:15 PM

the documentation wasnt very helpful at first glance, probably partially because the HTTP protocoll is asynchronous in nature

dance?•11/14/23, 6:54 PM

this is not that simple; there are the Connected property and Poll method, but socket could have Linger option, eventually there is Keep-Alive header, and in the end simply the client could not be responding so you have to have a timeout; probably there are other conditions too

Ddance?this is not that simple; there are the Connected property and Poll method, but s...

TiminatorOP•11/14/23, 10:38 PM

hm so better just catch it in the try catch block and handle it individually?

TiminatorOP•11/14/23, 10:39 PM

after all the server does not prematurely terminate the connection and if the clients no longer interested the request should be discarded anyways right?

dance?•11/15/23, 7:25 AM

as for tcp, closing the connection means sending a specific packet
so technically you could still send all of your data (if small) and send close
i would say just do the things you need to do, set a timeout in the socket, and that's it
i don't know if it makes sense thinking at this level if you just want to make a barebone http server

dance?•11/15/23, 7:25 AM

still, if you need some performance then you could need to implement some stuff
or maybe it's only for xhr requests, i don't know