ipfs/kubo

Add support for Port Control Protocol

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#2,797 opened on Jun 3, 2016

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exp/experthelp wantedkind/bugstatus/deferredtopic/nat

Description

My router has support for NAT-PMP and PCP, but not for uPNP.

go-ipfs redirects the IPv4 port, but doesn't seem to open a firewall hole for the IPv6 port.

Contributor guide

Tech stack
go
Domain
backend
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
4
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
over 1 week
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
GoNAT traversal conceptsIPFS architecture
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
20
Research direction
Investigate the existing NAT PMP implementation in the go ipfs codebase (likely in the NAT module). Understand how port mapping is handled for IPv4 and IPv6. Then research the PCP protocol specification and identify where to integrate it alongside the current NAT PMP support. The issue mentions that IPv6 port is not opened, so focus on adding PCP to handle IPv6 firewall holes. Look for references to nat pmp in the code, and plan to add a similar structure for PCP.