Salesforce & LinkedIn Developer API: 401 – Unauthorized

I’m not going to get into the boilerplate code you’ll need in order to get OAuth up and running as it’s pretty straight forward, but I did run into a peculiar issue which took me some time to narrow down. To reproduce these steps you’ll need to: Correctly setup OAuth between the Force.com Platform and LinkedIn Authorise access to your LinkedIn account Attempt to fetch a resource using an API endpoint such as: http://api.linkedin.com/v1/people/~/network/updates?scope=self When attempting to make the call out in step 3 you’ll get a “401 – Unauthorized” error. So to be clear OAuth is working perfectly but a call like this one will still result in the error. After some troubleshooting I noticed that some API endpoints didn’t result in the error e.g. http://api.linkedin.com/v1/people/id=abcdefg/network/updates?scope=self. At this point I realised the issue was probably the tilde (‘~’) character in the URI. Grasping at straws I manually replaced the tilde with …

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