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Waku v2 relay messaging is specified in 11/WAKU2-RELAY, a minor extension of the libp2p GossipSub protocol. GossipSub behaviour is controlled by a series of adjustable parameters. Waku v2 clients SHOULD configure these parameters to the recommended values below.">
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Waku v2 relay messaging is specified in 11/WAKU2-RELAY, a minor extension of the libp2p GossipSub protocol. GossipSub behaviour is controlled by a series of adjustable parameters. Waku v2 clients SHOULD configure these parameters to the recommended values below." />
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<ul>
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<li>Raw
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<ul>
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<li><a href="/spec/20/">20/TOY-ETH-PM</a></li>
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<li><a href="/spec/24/">24/STATUS-CURATION</a></li>
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<li><a href="/spec/28/">28/STATUS-FEATURING</a></li>
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<li><a href="/spec/31/">31/WAKU2-ENR</a></li>
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<li><a href="/spec/32/">32/RLN-V1</a></li>
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<li><a href="/spec/34/">34/WAKU2-PEER-EXCHANGE</a></li>
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<li><a href="/spec/35/">35/WAKU2-NOISE</a></li>
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<li><a href="/spec/37/">37/WAKU2-NOISE-SESSIONS</a></li>
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<li><a href="/spec/38/">38/CONSENSUS-CLARO</a></li>
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<li><a href="/spec/43/">43/WAKU2-NOISE-PAIRING</a></li>
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<li><a href="/spec/44/">44/WAKU2-DANDELION</a></li>
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<li><a href="/spec/45/">45/WAKU2-ADVERSARIAL-MODELS</a></li>
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<li><a href="/spec/46/">46/GOSSIPSUB-TOR-PUSH</a></li>
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<li><a href="/spec/47/">47/WAKU2-TOR-PUSH</a></li>
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<li><a href="/spec/48/">48/RLN-INTEREP-SPEC</a></li>
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<li><a href="/spec/51/">51/WAKU2-RELAY-SHARDING</a></li>
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<li><a href="/spec/52/">52/WAKU2-RELAY-STATIC-SHARD-ALLOC</a></li>
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<li><a href="/spec/57/">57/STATUS-Simple-Scaling</a></li>
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<li><a href="/spec/58/">58/RLN-V2</a></li>
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<li>Draft
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<li><a href="/spec/1/">1/COSS</a></li>
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<li><a href="/spec/3/">3/REMOTE-LOG</a></li>
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<li><a href="/spec/4/">4/MVDS-META</a></li>
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<li><a href="/spec/10/">10/WAKU2</a></li>
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<li><a href="/spec/12/">12/WAKU2-FILTER</a></li>
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<li><a href="/spec/13/">13/WAKU2-STORE</a></li>
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<li><a href="/spec/14/">14/WAKU2-MESSAGE</a></li>
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<li><a href="/spec/15/">15/WAKU2-BRIDGE</a></li>
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<li><a href="/spec/16/">16/WAKU2-RPC</a></li>
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<li><a href="/spec/17/">17/WAKU2-RLN-RELAY</a></li>
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<li><a href="/spec/18/">18/WAKU2-SWAP</a></li>
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<li><a href="/spec/19/">19/WAKU2-LIGHTPUSH</a></li>
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<li><a href="/spec/21/">21/WAKU2-FTSTORE</a></li>
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<li><a href="/spec/22/">22/TOY-CHAT</a></li>
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<li><a href="/spec/23/">23/WAKU2-TOPICS</a></li>
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<li><a href="/spec/26/">26/WAKU2-PAYLOAD</a></li>
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<li><a href="/spec/27/">27/WAKU2-PEERS</a></li>
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<li><a href="/spec/29/"class=active>29/WAKU2-CONFIG</a></li>
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<li><a href="/spec/30/">30/ADAPTIVE-NODES</a></li>
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<li><a href="/spec/33/">33/WAKU2-DISCV5</a></li>
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<li><a href="/spec/36/">36/WAKU2-BINDINGS-API</a></li>
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<li><a href="/spec/53/">53/WAKU2-X3DH</a></li>
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<li><a href="/spec/54/">54/WAKU2-X3DH-SESSIONS</a></li>
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<li><a href="/spec/55/">55/STATUS-1TO1-CHAT</a></li>
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<li><a href="/spec/56/">56/STATUS-COMMUNITIES</a></li>
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</ul>
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</li>
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<li>Stable
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<ul>
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<li><a href="/spec/2/">2/MVDS</a></li>
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<li><a href="/spec/6/">6/WAKU1</a></li>
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<li><a href="/spec/7/">7/WAKU-DATA</a></li>
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<li><a href="/spec/8/">8/WAKU-MAIL</a></li>
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<li><a href="/spec/9/">9/WAKU-RPC</a></li>
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<li><a href="/spec/11/">11/WAKU2-RELAY</a></li>
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<li>Deprecated
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<ul>
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<li><a href="/spec/5/">5/WAKU0</a></li>
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<li>Retired</li>
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<strong>29/WAKU2-CONFIG</strong>
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<li><a href="#gossipsub-v10-parameters">GossipSub v1.0 parameters</a></li>
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<li><a href="#gossipsub-v11-parameters">GossipSub v1.1 parameters</a></li>
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<li><a href="#other-configuration">Other configuration</a></li>
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<article class="markdown">
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<h1 id="29waku2-config">
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29/WAKU2-CONFIG
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<a class="anchor" href="#29waku2-config">#</a>
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</h1>
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<h1 id="waku-v2-client-parameter-configuration-recommendations">
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Waku v2 Client Parameter Configuration Recommendations
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<a class="anchor" href="#waku-v2-client-parameter-configuration-recommendations">#</a>
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</h1>
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<img src="https://img.shields.io/badge/status-draft-blue?style=flat-square" />
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<ul>
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<li>Status: draft</li>
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<li>Editor: Hanno Cornelius <a href="mailto:hanno@status.im">hanno@status.im</a></li>
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</ul><p><code>29/WAKU2-CONFIG</code> describes the RECOMMENDED values to assign to configurable parameters for Waku v2 clients.
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Since Waku v2 is built on <a href="https://github.com/libp2p/specs">libp2p</a>,
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most of the parameters and reasonable defaults are derived from there.</p>
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<p>Waku v2 relay messaging is specified in <a href="/spec/11"><code>11/WAKU2-RELAY</code></a>,
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a minor extension of the <a href="https://github.com/libp2p/specs/blob/master/pubsub/gossipsub/README.md">libp2p GossipSub protocol</a>.
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GossipSub behaviour is controlled by a series of adjustable parameters.
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Waku v2 clients SHOULD configure these parameters to the recommended values below.</p>
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<h1 id="gossipsub-v10-parameters">
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GossipSub v1.0 parameters
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<a class="anchor" href="#gossipsub-v10-parameters">#</a>
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</h1>
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<p>GossipSub v1.0 parameters are defined in the <a href="https://github.com/libp2p/specs/blob/master/pubsub/gossipsub/gossipsub-v1.0.md#parameters">corresponding libp2p specification</a>.
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We repeat them here with RECOMMMENDED values for <code>11/WAKU2-RELAY</code> implementations.</p>
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<table>
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<thead>
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<tr>
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<th>Parameter</th>
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<th>Purpose</th>
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<th>RECOMMENDED value</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td><code>D</code></td>
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<td>The desired outbound degree of the network</td>
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<td>6</td>
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</tr>
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<tr>
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<td><code>D_low</code></td>
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<td>Lower bound for outbound degree</td>
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<td>4</td>
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</tr>
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<tr>
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<td><code>D_high</code></td>
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<td>Upper bound for outbound degree</td>
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<td>12</td>
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</tr>
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<tr>
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<td><code>D_lazy</code></td>
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<td>(Optional) the outbound degree for gossip emission</td>
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<td><code>D</code></td>
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</tr>
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<tr>
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<td><code>heartbeat_interval</code></td>
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<td>Time between heartbeats</td>
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<td>1 second</td>
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</tr>
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<tr>
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<td><code>fanout_ttl</code></td>
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<td>Time-to-live for each topic’s fanout state</td>
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<td>60 seconds</td>
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</tr>
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<tr>
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<td><code>mcache_len</code></td>
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<td>Number of history windows in message cache</td>
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<td>5</td>
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</tr>
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<tr>
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<td><code>mcache_gossip</code></td>
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<td>Number of history windows to use when emitting gossip</td>
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<td>3</td>
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</tr>
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<tr>
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<td><code>seen_ttl</code></td>
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<td>Expiry time for cache of seen message ids</td>
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<td>2 minutes</td>
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</tr>
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</tbody>
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</table>
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<h1 id="gossipsub-v11-parameters">
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GossipSub v1.1 parameters
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<a class="anchor" href="#gossipsub-v11-parameters">#</a>
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</h1>
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<p>GossipSub v1.1 extended GossipSub v1.0 and introduced <a href="https://github.com/libp2p/specs/blob/master/pubsub/gossipsub/gossipsub-v1.1.md#overview-of-new-parameters">several new parameters</a>.
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We repeat the global parameters here with RECOMMMENDED values for <code>11/WAKU2-RELAY</code> implementations.</p>
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<table>
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<thead>
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<tr>
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<th>Parameter</th>
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<th>Description</th>
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<th>RECOMMENDED value</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td><code>PruneBackoff</code></td>
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<td>Time after pruning a mesh peer before we consider grafting them again.</td>
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<td>1 minute</td>
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</tr>
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<tr>
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<td><code>FloodPublish</code></td>
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<td>Whether to enable flood publishing</td>
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<td>true</td>
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</tr>
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<tr>
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<td><code>GossipFactor</code></td>
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<td>% of peers to send gossip to, if we have more than <code>D_lazy</code> available</td>
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<td>0.25</td>
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</tr>
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<tr>
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<td><code>D_score</code></td>
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<td>Number of peers to retain by score when pruning from oversubscription</td>
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<td><code>D_low</code></td>
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</tr>
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<tr>
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<td><code>D_out</code></td>
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<td>Number of outbound connections to keep in the mesh.</td>
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<td><code>D_low</code> - 1</td>
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</tr>
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</tbody>
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</table>
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<p><code>11/WAKU2-RELAY</code> clients SHOULD implement a peer scoring mechanism with the parameter constraints as <a href="https://github.com/libp2p/specs/blob/master/pubsub/gossipsub/gossipsub-v1.1.md#overview-of-new-parameters">specified by libp2p</a>.</p>
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<h1 id="other-configuration">
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Other configuration
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<a class="anchor" href="#other-configuration">#</a>
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</h1>
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<p>The following behavioural parameters are not specified by <code>libp2p</code>,
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but nevertheless describes constraints that <code>11/WAKU2-RELAY</code> clients MAY choose to implement.</p>
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<table>
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<thead>
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<tr>
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<th>Parameter</th>
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<th>Description</th>
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<th>RECOMMENDED value</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td><code>BackoffSlackTime</code></td>
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<td>Slack time to add to prune backoff before attempting to graft again</td>
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<td>2 seconds</td>
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</tr>
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<tr>
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<td><code>IWantPeerBudget</code></td>
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<td>Maximum number of IWANT messages to accept from a peer within a heartbeat</td>
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<td>25</td>
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</tr>
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<tr>
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<td><code>IHavePeerBudget</code></td>
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<td>Maximum number of IHAVE messages to accept from a peer within a heartbeat</td>
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<td>10</td>
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</tr>
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<tr>
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<td><code>IHaveMaxLength</code></td>
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<td>Maximum number of messages to include in an IHAVE message</td>
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<td>5000</td>
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</tr>
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</tbody>
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</table>
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<h1 id="copyright">
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Copyright
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<a class="anchor" href="#copyright">#</a>
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</h1>
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<p>Copyright and related rights waived via
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<a href="https://creativecommons.org/publicdomain/zero/1.0/">CC0</a>.</p>
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<h1 id="references">
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References
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<a class="anchor" href="#references">#</a>
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</h1>
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<ol>
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<li><a href="/spec/11"><code>11/WAKU2-RELAY</code></a></li>
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<li><a href="https://github.com/libp2p/specs/blob/master/pubsub/gossipsub/gossipsub-v1.0.md#parameters">GossipSub v1.0 parameters</a></li>
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<li><a href="https://github.com/libp2p/specs/blob/master/pubsub/gossipsub/gossipsub-v1.1.md#overview-of-new-parameters">GossipSub v1.1 parameters</a></li>
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<li><a href="https://github.com/libp2p/specs">libp2p</a></li>
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<li><a href="https://github.com/libp2p/specs/blob/master/pubsub/gossipsub/README.md">libp2p GossipSub protocol</a></li>
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</ol>
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<li><a href="#gossipsub-v10-parameters">GossipSub v1.0 parameters</a></li>
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<li><a href="#gossipsub-v11-parameters">GossipSub v1.1 parameters</a></li>
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<li><a href="#other-configuration">Other configuration</a></li>
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