topic Re: Custom connector returns empty header in Developer

Custom connector returns empty header

Anonymous — Tue, 09 Aug 2022 14:59:58 GMT

Dear community,

I'm currently trying to get a custom connector working due to an API returning information in the header of a response that is required to fetch all the data.

Initially, the following snippit of code worked and I got the same headers as when using postman

However, something has changed. I'm not sure what, but when I now test this, the only header I'm getting is 'content-type'....

I'm not really sure where to begin with this as postman is returning the proper values, and this has worked before and AFAIK I didn't change anything here ....

Hopefully somebody can point me in the right direction.

Kind regards,

Vincent

Re: Custom connector returns empty header

Anonymous — Tue, 16 Aug 2022 08:08:36 GMT

Hi @Anonymous ,

I think you may refer to blog as below to have a try.

https://powerusers.microsoft.com/t5/General-Power-Automate/Custom-connector-action-with-x-www-form-u...

Click "New Policy"
Name your policy
Select "Set HTTP header"
Select the Operations (Actions) that require this header
Header name: "content-type"
Header Value: "application/x-www-form-urlencoded"
Action if header exists: "override"
Run policy on: "Request"

Best Regards,

Rico Zhou

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

Re: Custom connector returns empty header

Anonymous — Fri, 19 Aug 2022 07:46:29 GMT

Dear Rico,

Thank you for the reply, but I believe something else is at play here. At some point, I simply rebuild the connector, and all was fine again, that was untill I added a method at the very start of the connector ( so preceding the original contents method ). After that, the response was mangled again. Interestingly, once removed the method all was fine again. I've toyed around with a bit ( to try and get a feel for the problem ), but in the end I had deadlines so I focussed on getting it done so I don't have a complete reproduction ... but it's rather unstable when it comes to moving that first content method around ....

kind regards,

Vincent

Re: Custom connector returns empty header

Daryl-Lynch-Bzy — Fri, 19 Aug 2022 17:18:08 GMT

Hi @Anonymous , I think you need to way that you have included you key in the Web.Contents function. Try this instead.

let AuthKey = "x-api-key = ####", Source = Web.Contents(url, [ Headers = [ Authorisation= AuthKey, #"Content-Type"="application/json" ], RelativePath = path, Content = Text.....

Re: Custom connector returns empty header

Anonymous — Wed, 24 Aug 2022 12:51:33 GMT

Dear Daryl,

Thank you for the reply, but I'm afraid that's not it. As I mentioned below here, initially the connector worked ( returning me all the expected headers ). And actually, it is working again after I removed a method that I put before the original contents method. Another funny thing I noticed, when examining the raw data coming in, the headers are THERE...there're just not shown and/or recognized ....

kind regards,

Vincent

Re: Custom connector returns empty header

Anonymous — Wed, 24 Aug 2022 12:53:21 GMT

Hey Rico,

I did this, but this didn't make a difference. As I indicated earlier, it did work before and after deleting a method that I put before the original contents method I worked again. Also, I checked the raw data coming in and I could see that even when the connector didn't show me the headers. They actually were there, so there is a very odd bug at play here...

kind regards,

Vincent