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ad45d23d94
According to the [spec], all fields within push messages are optional. To handle missing fields, we deserialize push messages into a different struct, patch the previously received, full identify message with it and emit this as the new info.
Previously, we failed to parse the message which causes incompatibility with js-libp2p nodes as they don't send the public key in push messages. See 88c47f51f9/packages/libp2p/src/identify/identify.ts (L205-L210).
[spec]: https://github.com/libp2p/specs/tree/master/identify#identifypush
Pull-Request: #4495.