To gain more control over their backend, authors can configure custom HTTP headers that would be sent to the commerce engine, along with the ones already sent by CIF. Common use-cases include multi-store setups in which you can use HTTP headers to control the response of the commerce back-end.
Developers can always configure custom HTTP headers using the GraphQL client configuration.
In order to configure the custom HTTP headers, one must first define them. The custom HTTP headers must first be defined by adding them to the
com.adobe.cq.cif.http.internal.HttpHeadersConfigProviderImpl service configuration using an OSGi config.
You can configure the values of the HTTP headers in the Cloud Service Configuration page for your project:
The components using the above cloud service configuration will send these HTTP headers with every GraphQL request.
While the service allows for any header names to be defined, including the standard ones, they won’t be available for configuring. In other words, you cannot override the standard HTTP headers using this feature. A list of restricted header names can be found here. In addition to those, there are two more headers that cannot be used: