Getting error code as zero from jira server rest api

[gowtham mahes]

Hi Team,

Currently, I am trying to integrate the Jira server rest API to my angular application for creating issues.

But when i try to hit the create issue api from my angular app i am getting cors error and getting status code as zero and status text as unknown error.

My angular app url : http://localhost:4000

Jira create issue rest api : https://XXXX/jira/rest/api/2/issue/

kindly help me for this

[Nic Brough -Adaptavist-]

This sounds like you have a networking issue between your system and your Jira.  Or that the call you are making is wrong somehow (a Cors error could be a network issue or a malformed request).  It's also possible that running your application on "localhost" is a problem because that means "this machine" and limits networking.

Could you tell us what the actual error is, and what call your app is making to Jira?

[gowtham mahes]

Thanks for your help.
please find the error snap below

[gowtham mahes]

I have developed one angular application in that i have called the jira server create issue rest api for creating issues. 

When try with same url , headers, and body in postman i am able to get the success response and issue got created.

Have deployed the angular app in iis server but still getting the same cors error
i read some articel saying to enable oauth for connecting the jira rest api from external appplication. or do i need to add my angular app url in jira whitelist?