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{
"title":"PING",
"related":["/protocol/network/messages/pong.md"]
} </div>
# Request: Ping ("ping")
Connection keep-alive, "aliveness" and latency discovery.
If a node receives a `ping` message, it replies as quickly as possible with a [`pong`](/protocol/network/messages/pong.md) message with the provided *nonce*.
## Message Format
| Field | Length | Format | Description |
|--|--|--|--|
| nonce | 8 bytes | unsigned 64 bit integer<sup>[(LE)](/protocol/misc/endian/little.md)</sup> | An arbitrary value provided to connect the ping message with the `pong` reply. |