The IESG has received a request from the Constrained RESTful Environments WG (core) to consider the following document: - 'Guidelines for HTTP-to-CoAP Mapping Implementations' <draft-ietf-core-http-mapping-17.txt> as Proposed Standard The IESG plans to make a decision in the next few weeks, and solicits final comments on this action. Please send substantive comments to the ietf@ietf.org mailing lists by 2016-12-13. Exceptionally, comments may be sent to iesg@ietf.org instead. In either case, please retain the beginning of the Subject line to allow automated sorting. This is a Second IETF LC for the document. The document was initially targeted at Informational, but is now targeting to become Proposed Standard. Abstract This document provides reference information for implementing a cross-protocol network proxy that performs translation from the HTTP protocol to CoAP (Constrained Application Protocol). This will enable an HTTP client to access resources on a CoAP server through the proxy. This document describes how an HTTP request is mapped to a CoAP request, and then how a CoAP response is mapped back to an HTTP response. This includes guidelines for status code, URI, and media type mappings, as well as additional interworking advice. The file can be obtained via https://datatracker.ietf.org/doc/draft-ietf-core-http-mapping/ IESG discussion can be tracked via https://datatracker.ietf.org/doc/draft-ietf-core-http-mapping/ballot/ No IPR declarations have been submitted directly on this I-D.