[Xymon] Browser-specific defects in Xymon 4.3.28

[John Thurston]

Chrome has stopped supporting our method (meta tag) of setting cookies. 
See the thread early in March, 2018 "Chrome cookie deprecations"

Firefox browser does not appear to correctly handle "multipart 
documents". As a consequence, the Snapshot Report pages does not reload, 
but leaves the customer looking at page with meta-refresh content. I 
don't know if this has always been the case, but it behaves this way on 
Firefox 54 and 59.

The problem is found in lines 184-187 of web/snapshot.c where the 
browser's useragent string is considered. If the string contains 
"KHTML", the browser is considered to be unable to handle multipart 
documents. Forcing those characters into the useragent string of my 
Firefox browsers makes it behave correctly with the snapshot report.




I don't know how to fix the cookie-setting method, but this looks like 
something I could patch around the next time I compile.
-- 
    Do things because you should, not just because you can.

John Thurston    907-465-8591
John.Thurston at alaska.gov
Department of Administration
State of Alaska