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Forum Discussion
/list_folder/longpoll not working with CORS
I see this was an issue 5 years ago, but that issue was reported as fixed. However, I am seeing the issue once again. I can call /list_folder no problem, as well as /list_folder/continue as you can see in my network trace below.
However, I cannot call /list_folder/longpoll. The error in the console is the usual CORS error message:
"Access to fetch at 'https://api.dropboxapi.com/2/files/list_folder/longpoll' from origin 'http://localhost:4200' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource. If an opaque response serves your needs, set the request's mode to 'no-cors' to fetch the resource with CORS disabled."
Unlike /2/files/list_folder and /2/files/list_folder/continue, the /2/files/list_folder/longpoll endpoint should be accessed on the 'notify.dropboxapi.com' host (not 'api.dropboxapi.com').
Please update your code to use 'https://notify.dropboxapi.com/2/files/list_folder/longpoll' and let me know if you're still running in to any issues.
- Greg-DB
Dropbox Staff
Unlike /2/files/list_folder and /2/files/list_folder/continue, the /2/files/list_folder/longpoll endpoint should be accessed on the 'notify.dropboxapi.com' host (not 'api.dropboxapi.com').
Please update your code to use 'https://notify.dropboxapi.com/2/files/list_folder/longpoll' and let me know if you're still running in to any issues.
I completely missed that in the docs. It's working beautifully now, thanks!
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