Change %Response.ContentLength

Question

Question

omer · Feb 11

Hey everyone,
Might be a stupid question, but i was trying to set the ContentLength of the %response object in my website.
In different places (like the onPreHttp / onPostHttp etc) but none seems to work.

The reason behind it is to send a more accurate representation of the actual data I send, instead of having the overhead of the broker that adds more characters , I want the exact length of the response accounting only for the data that I actually returned.

Product version: IRIS 2020.3

Discussion (2)1

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score 0 · Answer 1 · 2025-02-11T03:30:13-05:00

see docs: https://docs.intersystems.com/ens201813/csp/documatic/%25CSP.Documatic.cls?LIBRARY=%25SYS&CLASSNAME=%25CSP.Response#ContentLength
• property ContentLength as %String;

Sets the Content-Length header. Since the HTTP headers are sent after the OnPreHTTP() method is complete, setting it after this has no effect.

score 0 · Answer 2 · 2025-02-11T03:41:23-05:00

Trying to set %response.ContentLength in the OnPreHTTP() did NOT work...
Also part of the problem is that some responses has the response header "transfer-encoding: chunked"

which prevents having ContentLength anyway, but that is a different problem.

The %resposne.ContentLength doesnt change the actual value