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Protocol Version Changes

While the protocol specification does a reasonable job at explaining the format of the packets collecting all the changes needed to claim support for each verison of the protocol. This documents serves as a chronological (as in increasing version numbers) of what changes were introduced by each protocol version.

106

Added addr_from, nonce, user_agent, start_height to version packet

209

addr message contains multiple addresses serialized as Address

31402

Added timestamp field to Address format (notice, this is not the addr packet, but the serialization format for addresses contained within). 60001

Added relay to Version packet as a result of BIP 37
ping message expects peers to respond with a pong message.

Optional

BIP 37 introduces bloom filtering support:
- New messages filterload, filteradd and filterclear are introduced.
- Upon connection establishment no inv messages are relayed if relay is not specified in the version message. Announcement is selectively enabled by filteradd and filterload.

60002

This appears to be a simple version bump to enable reliance on service bits.

70001