As we make changes to our API, we’ll publish below. Changes to the product itself will be published on Product Updates.
HTTP/2 and Header Casing
We have started deploying new infrastructure that supports HTTP/2 connections. The HTTP/2 specification requires lowercase headers and HTTP/1.1 states header names are case insensitive. Therefore, we have updated our documentation to specify lowercase header names but will continue to support case insensitive headers in requests for HTTP/1.1 connections. Responses will have header names normalized to lowercase.