Common Request Headers

The Traffic Data Service allows you to submit both HTTP GET and HTTP POST requests. In order for you to execute a request, you must pass some common HTTP Header information. The headers are defined in the table below.

Header Mandatory Description
Authorization Yes Your authorization token given to you when you authenticate with HERE. For more information, see Get Your Credentials.
Accept-Encoding No Used for compressing the response. An example of this would be gzip
If-Modified-Since No The If-Modified-Since request HTTP header makes the request conditional: the server sends the requested resource with a 200 status, only if it has been modified after the given date. There server sends back a 304 status if nothing has changed. An example of this header is, "If-Modified-Since: Wed, 21 Oct 2015 07:28:00 GMT"

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