Re: svgalib links switches back to console when connecting

> Hi all,
>
> I have a strange problem. I use Links 2.1pre9 with svgalib 1.4.3-7.
> Each time links connects to a new server, it switches back to the
> console where it was run from. When I switch back, it operates normally
> until again a new server is contacted (i.e. subsequent requests to the
> same server do not cause this)
>
> I don't think it is caused by DNS lookups, as it happens even when I use
> IP addresses in the URLs.
>
> I tried both with HTTP/1.0 and HTTP/1.1 and the problem occurs with both
> - I think that 1.0 does not have persistent connections (???) - if that
> is true, the problem probably will not have anything to do with the
> actual connect(2)ing to the server and anything happening after that,
> but rather some function that happens before the connect(2)
>
> Also, connecting to a previously used server doesn't cause the problem:
> http://a/something	-> switch to console
> http://b		-> switch to console
> http://a/somethingelse	-> ok, no switch
>
>
> Has anyone had a similar experience?
>
> What can I do narrow down and help solve this problem?

Hi

This is probably because of exit of a child process (it happens when
lookup ends, once name is looked up, it is cached and no lookup thread is
called --- that's why it happens only first time you go to new server).
Older versions of links-2 used exit() function in start_thread in os_dep.c
(note that there are more start_thread functions for different systems,
pick up the one for unix without clone and pthreads), newer versions use
_exit. I think _exit is more appropriate. Look at start_thread, if there's
exit, upgrade for newer links or just rewrite it to _exit and see if
problem persists.

BTW. why do you run links on different console than it was started from? I
thought SVGAlib programs run on the same console.

Mikulas


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