I tried to send REST request to my server on click of a custom button in Salesforce. It shows me “unauthorized end point exception”.

Solution : To resolve this issue we need to add the server address as a remote site in Salesforce. Here are the steps to add remote site.

1.  Go to Setup->Security Controls:

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2.  Go to Security Controls->Remote Site Setting:

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Here create new remote site setting for server address then it will work fine.