@techreport{boucadair-hops-capability-discovery-00, number = {draft-boucadair-hops-capability-discovery-00}, type = {Internet-Draft}, institution = {Internet Engineering Task Force}, publisher = {Internet Engineering Task Force}, note = {Work in Progress}, url = {https://datatracker.ietf.org/doc/draft-boucadair-hops-capability-discovery/00/}, author = {Mohamed Boucadair and Christian Jacquenet}, title = {{Discovering the Capabilities of Flow-Aware Service Functions (a.k.a. Middleboxes): A PCP-based Approach}}, pagetotal = 12, year = 2015, month = jun, day = 30, abstract = {This document specifies a solution to discover the capabilities of a flow-aware service function. The solution relies upon the use of the Port Control Protocol (PCP). This solution allows for applications to anticipate connectivity failures and to proceed with countermeasures (e.g., create a mapping for incoming connections, discover a mapping lifetime, discover an external IP address, avoid injecting some options in the outgoing packets, etc.). The propsoed approach allows, for example, to discover whether an upstream flow-aware service function is MPTCP- friendly (that is, it does not strip MPTCP signals) or SCTP- compliant, whether it embeds a firewall function, etc. or a combination thereof.}, }