DEP 0006: App Identifier for Version and Verack Messages

status: draft

Motivation

Currently we use app version in version and verack messages to check if two nodes can communicate during version exchange phase, but this is not enough we need an app identifier to make sure two nodes are running the same app over the p2p network.

This would be in addition to the magic bytes we use to identify p2p networks as this human-readable info will make it easier to debug connection issues.

Proposal

Add the following field to Version and Verack Message