postman doing preflight request and CORS header check

[mrghosh]

I am using postman to debug qbittorrent API. qbittorrent API doesn't send 'Access-Control-Allow-Origin' header. So, all XHR request made by postman is failing.

Previously, I used ARC(advanced rest client) extension, and It had an option to "disable" XHR. So, It worked fine according to my scenario.

Is there any way postman can be helpful in my case?

1. Postman Version: Version 4.10.4
2. App (Chrome app or Mac app): Chrome
3. OS details: win / x86-64
4. Is the Interceptor on and enabled in the app: No
5. Did you encounter this recently, or has this bug always been there: N/A
6. Expected behaviour: N/A
7. Console logs:
   XMLHttpRequest cannot load http://127.0.0.1:8118/version/api. Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'chrome-extension://fhbjgbiflinjbdggehcddcbncdddomop' is therefore not allowed access.
8. Screenshots (if applicable)

[numaanashraf]

@souravndp That's odd. Postman should not be doing a preflight request and CORS header check. Could you let us know your OS and exact Chrome version too? We'll look into this. In the meantime, you could try our native apps (www.getpostman.com/apps) which do not use XHR.

[mrghosh]

I didn't think about this before but now I realized chrome allows extension and apps to make XHR.

My OS is Windows 10 64 bit. Chrome Version 56.0.2924.87 (64-bit)

[numaanashraf]

Thanks for the screenshot, @souravndp. We are taking a look at this.

[numaanashraf]

Hey @souravndp, could you send us a screenshot of the Network tab with the failed request? Something like

[mrghosh]

[prashantagarwal]

@souravndp Can you switch to Postman native apps and verify if you are still facing this issue

[profporridge]

I switched to the postman app and I am getting the CORS error

[azoz158-zz]

Any solution yet?

[PeterMen]

Any solution yet?

[PeterMen]

[geoidesic]

Is it possible to switch preflight checks on for postman?

[tkirankumar786]

@souravndp Can you switch to Postman native apps and verify if you are still facing this issue

it working for postman native apps but how