protocol/network/messages/addr.md

<div class="cwikmeta">{
"title":"ADDR",
"related":["/protocol","/protocol/network/messages/getaddr"]
}</div>

# Response: Addresses ("addr")

Provide information about other prospective P2P protocol peers.  Peers SHOULD not send this message unsolicited (see [`getaddr`](/protocol/network/messages/getaddr)), and nodes that receive an unsolicited `addr` message MUST ignore it.  This behavior helps prevent eclipse and partitioning attacks by not allowing an attacker to aggressively seed peer connection tables with its own nodes.

## Message Format

| Field | Length | Format | Description |
|--|--|--|--|
| peer count | variable | [variable length integer](/protocol/formats/variable-length-integer) | The number of peers whose connection information is being sent in this message. |
| peer network addresses | `peer_count` * 30 | `peer_count` [network addresses](/protocol/formats/network-address) | The peer information for each of the peers being transmitted. |
move p2p messages 2020-02-06 12:37:37 -05:00			`<div class="cwikmeta">{`
			`"title":"ADDR",`
wiki commit 2020-02-06 18:24:36 -05:00			`"related":["/protocol","/protocol/network/messages/getaddr"]`
move p2p messages 2020-02-06 12:37:37 -05:00			`}</div>`

Added remaining widely implemented messages. 2020-09-23 16:58:50 -04:00			`# Response: Addresses ("addr")`
wiki commit 2020-02-06 18:24:36 -05:00
Added mempool, more consistent styling of network message links. 2021-06-01 17:30:23 -04:00			Provide information about other prospective P2P protocol peers. Peers SHOULD not send this message unsolicited (see [`getaddr`](/protocol/network/messages/getaddr)), and nodes that receive an unsolicited `addr` message MUST ignore it. This behavior helps prevent eclipse and partitioning attacks by not allowing an attacker to aggressively seed peer connection tables with its own nodes.
move p2p messages 2020-02-06 12:37:37 -05:00
wiki commit 2020-02-06 18:24:36 -05:00			`## Message Format`

			`\| Field \| Length \| Format \| Description \|`
			`\|--\|--\|--\|--\|`
Making format documentation more consistent. 2020-09-24 16:49:32 -04:00			`\| peer count \| variable \| [variable length integer](/protocol/formats/variable-length-integer) \| The number of peers whose connection information is being sent in this message. \|`
			\| peer network addresses \| `peer_count` * 30 \| `peer_count` [network addresses](/protocol/formats/network-address) \| The peer information for each of the peers being transmitted. \|
wiki commit 2020-02-06 18:24:36 -05:00