Prebid Server Bid Adapter : Support for custom headers for XHR call

[sanved77]

Type of change

• Bugfix

• Feature

• New bidder adapter

• Updated bidder adapter

• Code style update (formatting, local variables)

• Refactoring (no functional changes, no api changes)

• Build related changes

• CI related changes

• Does this change affect user-facing APIs or examples documented on http://prebid.org?

• Other

Description of change

This PR introduces the capability to include custom headers in the XHR calls made to the Prebid Server bid adapter endpoint. By adding custom headers to the s2sConfig under the customHeader object, users can ensure that these headers are sent with the requests.

Usage

// If only one server config is given

pbjs.setConfig({
  s2sConfig: {
    endpoint: 'https://prebid-server.example.com/bid',
    customHeader: {
      'Custom-Header': 'value'
    }
  }
});

// If multiple servers, then something like this

pbjs.setConfig({
    s2sConfig: [
        {
            name: "pbs-appnexus",
            customHeader: {
                'Authorization': 'Bearer token-appnexus',
                'Appnexus-Custom-Header': 'value-appnexus'
            }
        },
        {
            name: "pbs-rubicon",
            customHeader: {
                'Authorization': 'Bearer token-rubicon',
                'Rubicon-Custom-Header': 'value-rubicon'
            }
        },
    ],
});

[patmmccann]

Please make a docs pr. Thanks for the new feature!

[sanved77]

Please make a docs pr. Thanks for the new feature!

You're welcome. Will add the docs PR

[sanved77]

@patmmccann
Doc PR added as well - prebid/prebid.github.io#5444

[patmmccann]

@bretg tagging you for input

[bretg]

Seems ok to me. I'm not signing off on the code, just the concept.