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add section about identify/push

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Yusef Napora
2019-05-01 14:28:55 -04:00
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identify/README.md
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# Identify v1.0.0
The identify protocol is used to query a peer about basic information and its capabilities.
The identify protocol is used to exchange basic information with other peers
in the network, including addresses, public keys, and capabilities.
The protocol works by opening a stream, using `/ipfs/id/1.0.0` as the protocol string.
The peer being identified responds by returning an `Identify` message and closes the
stream.
There are two variations of the identify protocol, `identify` and `identify/push`.
### `identify`
The `identify` protocol has the protocol id `/ipfs/id/1.0.0`, and it is used
to query remote peers for their information.
The protocol works by opening a stream to the remote peer you want to query, using
`/ipfs/id/1.0.0` as the protocol id string. The peer being identified responds by returning
an `Identify` message and closes the stream.
### `identify/push`
The `identify/push` protocol has the protocol id `/ipfs/id/push/1.0.0`, and it is used
to inform known peers about changes that occur at runtime.
When a peer's basic information changes, for example, because they've obtained a new
public listen address, they can use `identify/push` to inform others about the new
information.
The push variant works by opening a stream to each remote peer you want to update, using
`/ipfs/id/push/1.0.0` as the protocol id string. When the remote peer accepts the stream,
the local peer will send an `Identify` message and close the stream.
## The Identify Message