Hi,

I have an alternate proposal to recover from 500 error on HTML help 
topics. Instead of retrying 3 times [1], we just back off and retry only 
when the document is needed next. If the server is busy then backing off 
may be better than retries.

If a 'refresh' menu is available to force an update, then this changeset 
is not needed.

[1] 
http://forum.world.st/The-Inbox-HelpSystem-Core-ct-131-mcz-td5112713.html

Regards .. Subbu

On 02/04/20 3:15 PM, commits at source.squeak.org wrote:
> A new version of HelpSystem-Core was added to project The Inbox:
> http://source.squeak.org/inbox/HelpSystem-Core-kks.120.mcz
> 
> ==================== Summary ====================
> 
> Name: HelpSystem-Core-kks.120
> Author: kks
> Time: 2 April 2020, 8:45:13.607196 pm
> UUID: 33119c75-ba40-45d4-8ede-7086b7f4bc60
> Ancestors: HelpSystem-Core-mt.119
> 
> Fetch a topic document afresh from the server if the previous fetch resulted in an 500 error.
> 
> =============== Diff against HelpSystem-Core-mt.119 ===============
> 
> Item was changed:
>    ----- Method: HtmlHelpTopic>>document (in category 'accessing') -----
>    document
>    
> + 	(document isNil or: [document includesSubstring: '<title>500 Internal']) ifTrue: [
> + 		document := [
> + 				(HTTPSocket httpGet: self url accept: 'text/html') contents
> + 			] on: Error do: [:err | err printString]].
> + 	^document!
> - 	^ document ifNil: [document :=
> - 		[
> - 			(HTTPSocket httpGet: self url accept: 'text/html') contents
> - 		] on: Error do: [:err | err printString]]!
> 
>