[Edbrowse-dev] download background

[Karl Dahlke <eklhad@comcast.net>]

Further exploration of download in background fron a secure site:
I did finally get it to work, but I had to free all curl resources,
global cleanup, global init, and reset all the curl attributes
from start to the point of the https download.
But ... after the download, the child process was so corrupted
it couldn't even exit without seg fault.
I looked in curl.h and it says very clearly that
the global init function should be called "exactly once",
and the same for global cleanup.
Clearly I wasn't doing that, so all bets are off!
But that is the only way to get the secure download to work
in the child process.
I think this is a problem we can't solve or work around.
I also think it is primarily in ssl.
Nobody else seems to have this problem,
and I am on an older version of openssl,
so instead of spinning my wheels,
I think I should just document that download in background from secure sites
may not work on openssl version less than 1.0.1g,
and move on to other projects.
We've done this in other respects;
edbrowse just doesn't work with curl version < 7.26, or with pcre < something.
So I think this is reasonable, if indeed the problem is in ssl,
and fixed in recent versions of ssl.

Karl Dahlke