topic REST Connector - Response Header in Integration, Extension & APIs

REST Connector - Response Header

Anonymous — Fri, 13 Aug 2021 18:42:47 GMT

Hi,

I am trying to connect into a REST service using the Qlik connector. Has anyone had any luck getting any Response Header response to return? Our request is successful but returns no Response Header response. We have tested multiple REST clients and via command line with no issues.

Any insight would be appreciated.

Thanks.

Re: REST Connector - Response Header

juraj_misina — Wed, 14 Nov 2018 20:09:36 GMT

Hi,

when creating the REST connection, you need to check "Allow response headers" setting:

Hope this helps.

Juraj

Re: REST Connector - Response Header

Anonymous — Wed, 14 Nov 2018 20:15:07 GMT

Thanks for the quick reponse Juraj.

Unfortunately, I've already enabled this setting here as well as in page to load the data.

Re: REST Connector - Response Header

juraj_misina — Wed, 14 Nov 2018 20:19:50 GMT

Strange, this always worked for me no problem.

Re: REST Connector - Response Header

Anonymous — Wed, 14 Nov 2018 21:14:19 GMT

Interesting. What version of Qlik Sense are you using? Is it Web or Desktop? Could you send a screenshot of your full post (obviously with any sensitive info masked)? Thanks.

Re: REST Connector - Response Header

juraj_misina — Wed, 14 Nov 2018 21:36:21 GMT

This in particular is Qlik Sense Enterprise September 2018, but it worked on November 2017 as well. For desktop I install most of major releases and it have always worked for me.

Re: REST Connector - Response Header

Anonymous — Wed, 14 Nov 2018 21:51:00 GMT

Thanks again Juraj. Everything looks pretty much the same.

On a side note - assuming we will get the response header to return, do you know how we would take an auth token from this header to be used in subsequent requests? There doesn't seem to be much documentation on this. Thanks.

Re: REST Connector - Response Header

juraj_misina — Wed, 14 Nov 2018 22:05:11 GMT

You can read headers into a table, peek token value into a variable and then use it in any subsequent requests with the "WITH CONNECTION" keyword. Check the documentation here: https://help.qlik.com/en-US/connectors/Subsystems/REST_connector_help/Content/Connectors_REST/Load-REST-data/Load-data.htm and scroll to "WITH CONNECTION keyword" section.

Re: REST Connector - Response Header

Anonymous — Wed, 14 Nov 2018 22:06:07 GMT

Juraj,

Have you ever tried any Post request that returned a Response Header? That's the only difference I see.

Thanks.

Re: REST Connector - Response Header

Anonymous — Wed, 14 Nov 2018 22:07:15 GMT

Excellent, thanks!

Re: REST Connector - Response Header

juraj_misina — Wed, 14 Nov 2018 22:10:38 GMT

I don't think so. I POST to Google or Microsoft services durign OAuth2 authentication to obtain access token, but it is returned in response body, not header.

Re: REST Connector - Response Header

ReportingImpulsion — Thu, 07 Nov 2019 17:34:05 GMT

I am having this issue! No response body, but only header in a POST request.

The documentation of our provider's API shows this:

REST connector connects easily, but it is not getting any results, even though I ticked "Allow response headers".

Need to read the "operation-location" from the header.

Possible that Qlik doesn't recognize the response header if there is no response body?

Re: REST Connector - Response Header

juraj_misina — Wed, 13 Nov 2019 20:54:25 GMT

Looking at the November 2019 release notes, might this be an issue? Try upgrading the REST connector to the latest version if this does not fix your issue.