Version Handshake
On connect, version and verack messages are exchanged, in order to ensure compatibility between peers.
Version Handshake
When the local peer (L) connects to a remote peer (R), the remote peer will not send any data until it receives a version message.
L -> R: Send version message with the local peer's version R -> L: Send version message back R -> L: Send verack message R: Sets version to the minimum of the 2 versions L -> R: Send verack message after receiving version message from R L: Sets version to the minimum of the 2 versions
Note: A version number of 10300 is converted to 300 before being processed and versions below 209 are no longer supported.