http blank ncode

[Brad Lanam]

Well, an annoying bug.
http would occasionally return a empty ncode.
I believe all the meta data was empty.

Intermittent. Only happens on Windows.

I already have retry code in my http utility (to handle 401),
so I just run a retry when I get an empty ncode.

This is running against my own Tcl web server, so
could easily be on my end, but not sure why it
is intermittent and rare.

[Harald Oehlmann]

Brad,

maybe you hit a bug fixed in 8.6.8 ?

https://core.tcl.tk/tcl/info/46b6edad51e645c7

Just a guess,
Harald

[Brad Lanam]

I am running 8.6.8.

No, this bug wasn't related.
I have not had time to try and track it down.
I am working around it by just forcing a retry (which I already had code for
in my http utilities).

I gave up trying to make http handle concurrent requests.
I just push them on a stack and wait.
(Also, I am using digest authentication, so I have to wait between
requests, otherwise the counters get mangled -- maybe I have
implementation issues there).
But I've got my own tcl web server, so that could be a bug on my end, either
on the server side or the client side. And yes, I have keepalive enabled.

[Harald Oehlmann]

Ok, good luck,
Harald