From 3d14b5adcccb174a36668b20c99956cab2220dde Mon Sep 17 00:00:00 2001
From: status-im-auto <auto@status.im>
Date: Tue, 3 Oct 2023 13:43:07 +0000
Subject: [PATCH] Update documentation

---
 404.html                                      |   2 +-
 categories/index.html                         |   2 +-
 docs/index.html                               |   2 +-
 ...06ebdda010b3fc7309f697cb34a72b211fe4e31.js |   6 +-
 ...feed6a0cb974c23acbec80c9a8c79bb7be88fd0.js |   2 +-
 index.html                                    |   2 +-
 spec/1/index.html                             |   2 +-
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 spec/12/index.html                            | 259 +++++++++++++-----
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 .../index.html                                |   2 +-
 tags/index.html                               |   2 +-
 tags/logos/consensus/index.html               |   2 +-
 tags/rln/index.html                           |   2 +-
 tags/waku-application/index.html              |   2 +-
 tags/waku-core-protocol/index.html            |   2 +-
 tags/waku-core/index.html                     |   2 +-
 tags/waku/anonymity/index.html                |   2 +-
 tags/waku/application/index.html              |   2 +-
 tags/waku/core-protocol/index.html            |   2 +-
 72 files changed, 267 insertions(+), 144 deletions(-)
 rename en.search-data.min.8d7011c56092fd392625d30e5d23c16468f7ef31ee3b6a816a41b1dcc58e7b4b.js => en.search-data.min.aa3259c506af5e5643b3292ab06ebdda010b3fc7309f697cb34a72b211fe4e31.js (99%)
 rename en.search.min.5ded20501fd3debf92de0cd115de9de371f4bce78e8de5a9b2f50e06f822ce49.js => en.search.min.b14a80ecaee957f4b9832830ffeed6a0cb974c23acbec80c9a8c79bb7be88fd0.js (89%)

diff --git a/404.html b/404.html
index fdd573113..4201a1b9f 100644
--- a/404.html
+++ b/404.html
@@ -14,7 +14,7 @@
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+<script defer src="/en.search.min.b14a80ecaee957f4b9832830ffeed6a0cb974c23acbec80c9a8c79bb7be88fd0.js" integrity="sha256-sUqA7K7pV/S5gygw/&#43;7WoMuXTCOsvsgMmox5u3voj9A="></script>
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diff --git a/categories/index.html b/categories/index.html
index 4df84e187..1cad7cdc7 100644
--- a/categories/index.html
+++ b/categories/index.html
@@ -15,7 +15,7 @@
 <link rel="manifest" href="/manifest.json">
 <link rel="icon" href="/favicon.png" type="image/x-icon">
 <link rel="stylesheet" href="/book.min.e935e20bd0d469378cb482f0958edf258c731a4f895dccd55799c6fbc8043f23.css" integrity="sha256-6TXiC9DUaTeMtILwlY7fJYxzGk&#43;JXczVV5nG&#43;8gEPyM=">
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+<script defer src="/en.search.min.b14a80ecaee957f4b9832830ffeed6a0cb974c23acbec80c9a8c79bb7be88fd0.js" integrity="sha256-sUqA7K7pV/S5gygw/&#43;7WoMuXTCOsvsgMmox5u3voj9A="></script>
 <link rel="alternate" type="application/rss+xml" href="https://rfc.vac.dev/categories/index.xml" title="Vac RFC" />
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diff --git a/docs/index.html b/docs/index.html
index c44d697e7..4f17d43b2 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -15,7 +15,7 @@
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 <link rel="icon" href="/favicon.png" type="image/x-icon">
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+<script defer src="/en.search.min.b14a80ecaee957f4b9832830ffeed6a0cb974c23acbec80c9a8c79bb7be88fd0.js" integrity="sha256-sUqA7K7pV/S5gygw/&#43;7WoMuXTCOsvsgMmox5u3voj9A="></script>
 <link rel="alternate" type="application/rss+xml" href="https://rfc.vac.dev/docs/index.xml" title="Vac RFC" />
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diff --git a/en.search-data.min.8d7011c56092fd392625d30e5d23c16468f7ef31ee3b6a816a41b1dcc58e7b4b.js b/en.search-data.min.aa3259c506af5e5643b3292ab06ebdda010b3fc7309f697cb34a72b211fe4e31.js
similarity index 99%
rename from en.search-data.min.8d7011c56092fd392625d30e5d23c16468f7ef31ee3b6a816a41b1dcc58e7b4b.js
rename to en.search-data.min.aa3259c506af5e5643b3292ab06ebdda010b3fc7309f697cb34a72b211fe4e31.js
index fadf5bbc8..b1749d3c4 100644
--- a/en.search-data.min.8d7011c56092fd392625d30e5d23c16468f7ef31ee3b6a816a41b1dcc58e7b4b.js
+++ b/en.search-data.min.aa3259c506af5e5643b3292ab06ebdda010b3fc7309f697cb34a72b211fe4e31.js
@@ -1492,7 +1492,7 @@ Like the IANA ports, shard clusters are divided into ranges:
 index (range) usage 0 - 15 reserved 16 - 65535 app-defined networks The informational RFC 52/WAKU2-RELAY-STATIC-SHARD-ALLOC lists the current index allocations.
 The global shard with index 0 and the \u0026ldquo;all app protocols\u0026rdquo; range are treated in the same way, but choosing shards in the global cluster has a higher probability of sharing the shard with other apps. This offers k-anonymity and better connectivity, but comes at a higher bandwidth cost.
 The name of the pubsub topic corresponding to a given static shard is specified as
-/waku/2/rs/\u0026lt;shard_cluster_index\u0026gt;/\u0026lt;shard_number\u0026gt;,
+/waku/2/rs/\u0026lt;cluster_id\u0026gt;/\u0026lt;shard_number\u0026gt;,
 an example for the 2nd shard in the global shard cluster:
 /waku/2/rs/0/2.
 Note: Because all shards distribute payload defined in 14/WAKU2-MESSAGE via protocol buffers, the pubsub topic name does not explicitly add /proto to indicate protocol buffer encoding. We use rs to indicate these are relay shard clusters; further shard types might follow in the future.
@@ -1665,7 +1665,7 @@ Relay Shards # Sharding the Waku Relay network is an integral part of scaling th
 51/WAKU2-RELAY-SHARDING specifies three sharding methods. This document uses static sharding, which leaves the distribution of content topics to application protocols, but takes care of shard discovery.
 The 1024 shards within the main Status shard cluster are allocated as follows.
 Shard Allocation # shard index usage 0 - 15 reserved 16 - 127 specific (large) communities 128 - 767 communities 768 - 895 1:1 chat 896 - 1023 media and control msgs Shard indices are mapped to pubsub topic names as follows (specified in 51/WAKU2-RELAY-SHARDING).
-/waku/2/rs/\u0026lt;shard_cluster_index\u0026gt;/\u0026lt;shard_number\u0026gt;
+/waku/2/rs/\u0026lt;cluster_id\u0026gt;/\u0026lt;shard_number\u0026gt;
 an example for the shard with index 18 in the Status shard cluster:
 /waku/2/rs/16/18
 In other words, the mesh network with the pubsub topic name /waku/2/rs/16/18 carries messages associated with shard 18 in the Status shard cluster.
@@ -1972,7 +1972,7 @@ Privacy Considerations # Inherits the privacy considerations of Status Keycard
 Copyright # Copyright and related rights waived via CC0.
 References # BIP-32 specification Keycard documentation 16/Keycard-Usage `}),e.add({id:52,href:"/spec/64/",title:"64/WAKU2-NETWORK",section:"Docs",content:` Abstract # This RFC specifies an opinionated deployment of 10/WAKU2 protocols to form a coherent and shared decentralized messaging network that is open-access, useful for generalized messaging, privacy-preserving, scalable and accessible even to resource-restricted devices. We\u0026rsquo;ll refer to this opinionated deployment simply as the public Waku Network, the Waku Network or, if the context is clear, the network in the rest of this document.
 Theory / Semantics # Routing protocol # The Waku Network is built on the 17/WAKU2-RLN-RELAY routing protocol, which in turn is an extension of 11/WAKU2-RELAY with spam protection measures.
-Network shards # Traffic in the Waku Network is sharded into eight 17/WAKU2-RLN-RELAY pubsub topics. Each pubsub topic is named according to the static shard naming format defined in 51/WAKU2-RELAY-SHARDING with \u0026lt;shard_cluster_index\u0026gt; set to 1 and \u0026lt;shard_number\u0026gt; occupying the range 0 to 7. In other words, the Waku Network is a 17/WAKU2-RLN-RELAY network routed on the combination of the eight pubsub topics:
+Network shards # Traffic in the Waku Network is sharded into eight 17/WAKU2-RLN-RELAY pubsub topics. Each pubsub topic is named according to the static shard naming format defined in 51/WAKU2-RELAY-SHARDING with \u0026lt;cluster_id\u0026gt; set to 1 and \u0026lt;shard_number\u0026gt; occupying the range 0 to 7. In other words, the Waku Network is a 17/WAKU2-RLN-RELAY network routed on the combination of the eight pubsub topics:
 /waku/2/rs/1/0 /waku/2/rs/1/1 ... /waku/2/rs/1/7 Roles # There are two distinct roles evident in the network, those of:
 nodes, and applications. Nodes # Nodes are the individual software units using 10/WAKU2 protocols to form a p2p messaging network. Nodes, in turn, can participate in a shard as full relayers, i.e. relay nodes, or by running a combination of protocols suitable for resource-restricted environments, i.e. non-relay nodes. Nodes can also provide various services to the network, such as storing historical messages or protecting the network against spam. See the section on default services for more.
 Relay nodes # Relay nodes MUST follow 17/WAKU2-RLN-RELAY to route messages to other nodes in the network for any of the pubsub topics defined as the Waku Network shards. Relay nodes MAY choose to subscribe to any of these shards, but MUST be subscribed to at least one defined shard. Each relay node SHOULD be subscribed to as many shards as it has resources to support. If a relay node supports an encapsulating application, it SHOULD be subscribed to all the shards servicing that application. If resource restrictions prevent a relay node from servicing all shards used by the encapsulating application, it MAY choose to support some shards as a non-relay node.
diff --git a/en.search.min.5ded20501fd3debf92de0cd115de9de371f4bce78e8de5a9b2f50e06f822ce49.js b/en.search.min.b14a80ecaee957f4b9832830ffeed6a0cb974c23acbec80c9a8c79bb7be88fd0.js
similarity index 89%
rename from en.search.min.5ded20501fd3debf92de0cd115de9de371f4bce78e8de5a9b2f50e06f822ce49.js
rename to en.search.min.b14a80ecaee957f4b9832830ffeed6a0cb974c23acbec80c9a8c79bb7be88fd0.js
index 7494f1261..5335c9181 100644
--- a/en.search.min.5ded20501fd3debf92de0cd115de9de371f4bce78e8de5a9b2f50e06f822ce49.js
+++ b/en.search.min.b14a80ecaee957f4b9832830ffeed6a0cb974c23acbec80c9a8c79bb7be88fd0.js
@@ -1 +1 @@
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diff --git a/index.html b/index.html
index 9719a4ece..e333d1187 100644
--- a/index.html
+++ b/index.html
@@ -15,7 +15,7 @@
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+<script defer src="/en.search.min.b14a80ecaee957f4b9832830ffeed6a0cb974c23acbec80c9a8c79bb7be88fd0.js" integrity="sha256-sUqA7K7pV/S5gygw/&#43;7WoMuXTCOsvsgMmox5u3voj9A="></script>
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diff --git a/spec/1/index.html b/spec/1/index.html
index 0796cbf58..9780b4893 100644
--- a/spec/1/index.html
+++ b/spec/1/index.html
@@ -21,7 +21,7 @@
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+<script defer src="/en.search.min.b14a80ecaee957f4b9832830ffeed6a0cb974c23acbec80c9a8c79bb7be88fd0.js" integrity="sha256-sUqA7K7pV/S5gygw/&#43;7WoMuXTCOsvsgMmox5u3voj9A="></script>
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diff --git a/spec/10/index.html b/spec/10/index.html
index 38fa0e146..0a02b897d 100644
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@@ -17,7 +17,7 @@
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+<script defer src="/en.search.min.b14a80ecaee957f4b9832830ffeed6a0cb974c23acbec80c9a8c79bb7be88fd0.js" integrity="sha256-sUqA7K7pV/S5gygw/&#43;7WoMuXTCOsvsgMmox5u3voj9A="></script>
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diff --git a/spec/11/index.html b/spec/11/index.html
index a3ee759b1..a66d985c3 100644
--- a/spec/11/index.html
+++ b/spec/11/index.html
@@ -17,7 +17,7 @@
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+<script defer src="/en.search.min.b14a80ecaee957f4b9832830ffeed6a0cb974c23acbec80c9a8c79bb7be88fd0.js" integrity="sha256-sUqA7K7pV/S5gygw/&#43;7WoMuXTCOsvsgMmox5u3voj9A="></script>
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diff --git a/spec/12/index.html b/spec/12/index.html
index 549d32e02..05f948c37 100644
--- a/spec/12/index.html
+++ b/spec/12/index.html
@@ -5,13 +5,15 @@
   <meta name="generator" content="Hugo 0.106.0">
   <meta charset="UTF-8">
 <meta name="viewport" content="width=device-width, initial-scale=1.0">
-<meta name="description" content="WakuFilter is a protocol that enables subscribing to messages that a peer receives. This is a more lightweight version of WakuRelay specifically designed for bandwidth restricted devices. This is due to the fact that light nodes subscribe to full-nodes and only receive the messages they desire.
-Content filtering # Protocol identifier*: /vac/waku/filter/2.0.0-beta1
-Content filtering is a way to do message-based filtering. Currently the only content filter being applied is on contentTopic.">
+<meta name="description" content="previous versions: 00
+WakuFilter is a protocol that enables subscribing to messages that a peer receives. This is a more lightweight version of WakuRelay specifically designed for bandwidth restricted devices. This is due to the fact that light nodes subscribe to full-nodes and only receive the messages they desire.
+Content filtering # Protocol identifiers:
+filter-subscribe: /vac/waku/filter-subscribe/2.0.0-beta1 filter-push: /vac/waku/filter-push/2.0.0-beta1 Content filtering is a way to do message-based filtering. Currently the only content filter being applied is on contentTopic.">
 <meta name="theme-color" content="#FFFFFF"><meta property="og:title" content="12/WAKU2-FILTER" />
-<meta property="og:description" content="WakuFilter is a protocol that enables subscribing to messages that a peer receives. This is a more lightweight version of WakuRelay specifically designed for bandwidth restricted devices. This is due to the fact that light nodes subscribe to full-nodes and only receive the messages they desire.
-Content filtering # Protocol identifier*: /vac/waku/filter/2.0.0-beta1
-Content filtering is a way to do message-based filtering. Currently the only content filter being applied is on contentTopic." />
+<meta property="og:description" content="previous versions: 00
+WakuFilter is a protocol that enables subscribing to messages that a peer receives. This is a more lightweight version of WakuRelay specifically designed for bandwidth restricted devices. This is due to the fact that light nodes subscribe to full-nodes and only receive the messages they desire.
+Content filtering # Protocol identifiers:
+filter-subscribe: /vac/waku/filter-subscribe/2.0.0-beta1 filter-push: /vac/waku/filter-push/2.0.0-beta1 Content filtering is a way to do message-based filtering. Currently the only content filter being applied is on contentTopic." />
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 <meta property="og:url" content="https://rfc.vac.dev/spec/12/" /><meta property="article:section" content="docs" />
 
@@ -21,7 +23,7 @@
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@@ -192,9 +194,18 @@ <h2 class="book-brand">
     </li>
     <li><a href="#adversarial-model">Adversarial Model</a>
       <ul>
-        <li><a href="#protobuf">Protobuf</a>
+        <li><a href="#protobuf">Protobuf</a></li>
+        <li><a href="#filter-subscribe">Filter-Subscribe</a>
           <ul>
-            <li></li>
+            <li><a href="#filter-subscribe-request">Filter Subscribe Request</a></li>
+            <li><a href="#filter-subscribe-response">Filter Subscribe Response</a></li>
+            <li><a href="#filter-matching">Filter matching</a></li>
+            <li><a href="#filter-subscribe-types">Filter Subscribe Types</a></li>
+          </ul>
+        </li>
+        <li><a href="#filter-push">Filter-Push</a>
+          <ul>
+            <li><a href="#message-push">Message Push</a></li>
           </ul>
         </li>
       </ul>
@@ -267,12 +278,18 @@ <h1 id="waku-v2-filter">
           
       </li>
       
-  </ul><p><code>WakuFilter</code> is a protocol that enables subscribing to messages that a peer receives. This is a more lightweight version of <code>WakuRelay</code> specifically designed for bandwidth restricted devices. This is due to the fact that light nodes subscribe to full-nodes and only receive the messages they desire.</p>
+  </ul><p>previous versions: <a href="/spec/12/previous-versions/00/">00</a></p>
+<hr>
+<p><code>WakuFilter</code> is a protocol that enables subscribing to messages that a peer receives. This is a more lightweight version of <code>WakuRelay</code> specifically designed for bandwidth restricted devices. This is due to the fact that light nodes subscribe to full-nodes and only receive the messages they desire.</p>
 <h1 id="content-filtering">
   Content filtering
   <a class="anchor" href="#content-filtering">#</a>
 </h1>
-<p><strong>Protocol identifier</strong>*: <code>/vac/waku/filter/2.0.0-beta1</code></p>
+<p><strong>Protocol identifiers</strong>:</p>
+<ul>
+<li><em>filter-subscribe</em>: <code>/vac/waku/filter-subscribe/2.0.0-beta1</code></li>
+<li><em>filter-push</em>: <code>/vac/waku/filter-push/2.0.0-beta1</code></li>
+</ul>
 <p>Content filtering is a way to do <a href="https://en.wikipedia.org/wiki/Publish%E2%80%93subscribe_pattern#Message_filtering">message-based
 filtering</a>.
 Currently the only content filter being applied is on <code>contentTopic</code>. This
@@ -321,71 +338,168 @@ <h2 id="protobuf">
   Protobuf
   <a class="anchor" href="#protobuf">#</a>
 </h2>
-<div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-protobuf" data-lang="protobuf"><span style="display:flex;"><span><span style="color:#66d9ef">message</span> <span style="color:#a6e22e">FilterRequest</span> {<span style="color:#960050;background-color:#1e0010">
-</span></span></span><span style="display:flex;"><span><span style="color:#960050;background-color:#1e0010"></span>  <span style="color:#66d9ef">bool</span> subscribe <span style="color:#f92672">=</span> <span style="color:#ae81ff">1</span>;<span style="color:#960050;background-color:#1e0010">
-</span></span></span><span style="display:flex;"><span><span style="color:#960050;background-color:#1e0010"></span>  <span style="color:#66d9ef">string</span> topic <span style="color:#f92672">=</span> <span style="color:#ae81ff">2</span>;<span style="color:#960050;background-color:#1e0010">
-</span></span></span><span style="display:flex;"><span><span style="color:#960050;background-color:#1e0010"></span>  <span style="color:#66d9ef">repeated</span> ContentFilter contentFilters <span style="color:#f92672">=</span> <span style="color:#ae81ff">3</span>;<span style="color:#960050;background-color:#1e0010">
+<div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-protobuf" data-lang="protobuf"><span style="display:flex;"><span>syntax <span style="color:#f92672">=</span> <span style="color:#e6db74">&#34;proto3&#34;</span>;<span style="color:#960050;background-color:#1e0010">
+</span></span></span><span style="display:flex;"><span><span style="color:#960050;background-color:#1e0010">
+</span></span></span><span style="display:flex;"><span><span style="color:#960050;background-color:#1e0010"></span><span style="color:#75715e">// 12/WAKU2-FILTER rfc: https://rfc.vac.dev/spec/12/
+</span></span></span><span style="display:flex;"><span><span style="color:#75715e"></span><span style="color:#f92672">package</span> waku<span style="color:#f92672">.</span>filter.v2;<span style="color:#960050;background-color:#1e0010">
 </span></span></span><span style="display:flex;"><span><span style="color:#960050;background-color:#1e0010">
-</span></span></span><span style="display:flex;"><span><span style="color:#960050;background-color:#1e0010"></span>  <span style="color:#66d9ef">message</span> <span style="color:#a6e22e">ContentFilter</span> {<span style="color:#960050;background-color:#1e0010">
-</span></span></span><span style="display:flex;"><span><span style="color:#960050;background-color:#1e0010"></span>    <span style="color:#66d9ef">string</span> contentTopic <span style="color:#f92672">=</span> <span style="color:#ae81ff">1</span>;<span style="color:#960050;background-color:#1e0010">
+</span></span></span><span style="display:flex;"><span><span style="color:#960050;background-color:#1e0010"></span><span style="color:#75715e">// Protocol identifier: /vac/waku/filter-subscribe/2.0.0-beta1
+</span></span></span><span style="display:flex;"><span><span style="color:#75715e"></span><span style="color:#66d9ef">message</span> <span style="color:#a6e22e">FilterSubscribeRequest</span> {<span style="color:#960050;background-color:#1e0010">
+</span></span></span><span style="display:flex;"><span><span style="color:#960050;background-color:#1e0010"></span>  <span style="color:#66d9ef">enum</span> FilterSubscribeType {<span style="color:#960050;background-color:#1e0010">
+</span></span></span><span style="display:flex;"><span><span style="color:#960050;background-color:#1e0010"></span>    SUBSCRIBER_PING <span style="color:#f92672">=</span> <span style="color:#ae81ff">0</span>;<span style="color:#960050;background-color:#1e0010">
+</span></span></span><span style="display:flex;"><span><span style="color:#960050;background-color:#1e0010"></span>    SUBSCRIBE <span style="color:#f92672">=</span> <span style="color:#ae81ff">1</span>;<span style="color:#960050;background-color:#1e0010">
+</span></span></span><span style="display:flex;"><span><span style="color:#960050;background-color:#1e0010"></span>    UNSUBSCRIBE <span style="color:#f92672">=</span> <span style="color:#ae81ff">2</span>;<span style="color:#960050;background-color:#1e0010">
+</span></span></span><span style="display:flex;"><span><span style="color:#960050;background-color:#1e0010"></span>    UNSUBSCRIBE_ALL <span style="color:#f92672">=</span> <span style="color:#ae81ff">3</span>;<span style="color:#960050;background-color:#1e0010">
 </span></span></span><span style="display:flex;"><span><span style="color:#960050;background-color:#1e0010"></span>  }<span style="color:#960050;background-color:#1e0010">
+</span></span></span><span style="display:flex;"><span><span style="color:#960050;background-color:#1e0010">
+</span></span></span><span style="display:flex;"><span><span style="color:#960050;background-color:#1e0010"></span>  <span style="color:#66d9ef">string</span> request_id <span style="color:#f92672">=</span> <span style="color:#ae81ff">1</span>;<span style="color:#960050;background-color:#1e0010">
+</span></span></span><span style="display:flex;"><span><span style="color:#960050;background-color:#1e0010"></span>  FilterSubscribeType filter_subscribe_type <span style="color:#f92672">=</span> <span style="color:#ae81ff">2</span>;<span style="color:#960050;background-color:#1e0010">
+</span></span></span><span style="display:flex;"><span><span style="color:#960050;background-color:#1e0010">
+</span></span></span><span style="display:flex;"><span><span style="color:#960050;background-color:#1e0010"></span>  <span style="color:#75715e">// Filter criteria
+</span></span></span><span style="display:flex;"><span><span style="color:#75715e"></span>  <span style="color:#66d9ef">optional</span> <span style="color:#66d9ef">string</span> pubsub_topic <span style="color:#f92672">=</span> <span style="color:#ae81ff">10</span>;<span style="color:#960050;background-color:#1e0010">
+</span></span></span><span style="display:flex;"><span><span style="color:#960050;background-color:#1e0010"></span>  <span style="color:#66d9ef">repeated</span> <span style="color:#66d9ef">string</span> content_topics <span style="color:#f92672">=</span> <span style="color:#ae81ff">11</span>;<span style="color:#960050;background-color:#1e0010">
 </span></span></span><span style="display:flex;"><span><span style="color:#960050;background-color:#1e0010"></span>}<span style="color:#960050;background-color:#1e0010">
 </span></span></span><span style="display:flex;"><span><span style="color:#960050;background-color:#1e0010">
-</span></span></span><span style="display:flex;"><span><span style="color:#960050;background-color:#1e0010"></span><span style="color:#66d9ef">message</span> <span style="color:#a6e22e">MessagePush</span> {<span style="color:#960050;background-color:#1e0010">
-</span></span></span><span style="display:flex;"><span><span style="color:#960050;background-color:#1e0010"></span>  <span style="color:#66d9ef">repeated</span> WakuMessage messages <span style="color:#f92672">=</span> <span style="color:#ae81ff">1</span>;<span style="color:#960050;background-color:#1e0010">
+</span></span></span><span style="display:flex;"><span><span style="color:#960050;background-color:#1e0010"></span><span style="color:#66d9ef">message</span> <span style="color:#a6e22e">FilterSubscribeResponse</span> {<span style="color:#960050;background-color:#1e0010">
+</span></span></span><span style="display:flex;"><span><span style="color:#960050;background-color:#1e0010"></span>  <span style="color:#66d9ef">string</span> request_id <span style="color:#f92672">=</span> <span style="color:#ae81ff">1</span>;<span style="color:#960050;background-color:#1e0010">
+</span></span></span><span style="display:flex;"><span><span style="color:#960050;background-color:#1e0010"></span>  <span style="color:#66d9ef">uint32</span> status_code <span style="color:#f92672">=</span> <span style="color:#ae81ff">10</span>;<span style="color:#960050;background-color:#1e0010">
+</span></span></span><span style="display:flex;"><span><span style="color:#960050;background-color:#1e0010"></span>  <span style="color:#66d9ef">optional</span> <span style="color:#66d9ef">string</span> status_desc <span style="color:#f92672">=</span> <span style="color:#ae81ff">11</span>;<span style="color:#960050;background-color:#1e0010">
 </span></span></span><span style="display:flex;"><span><span style="color:#960050;background-color:#1e0010"></span>}<span style="color:#960050;background-color:#1e0010">
 </span></span></span><span style="display:flex;"><span><span style="color:#960050;background-color:#1e0010">
-</span></span></span><span style="display:flex;"><span><span style="color:#960050;background-color:#1e0010"></span><span style="color:#66d9ef">message</span> <span style="color:#a6e22e">FilterRPC</span> {<span style="color:#960050;background-color:#1e0010">
-</span></span></span><span style="display:flex;"><span><span style="color:#960050;background-color:#1e0010"></span>  <span style="color:#66d9ef">string</span> requestId <span style="color:#f92672">=</span> <span style="color:#ae81ff">1</span>;<span style="color:#960050;background-color:#1e0010">
-</span></span></span><span style="display:flex;"><span><span style="color:#960050;background-color:#1e0010"></span>  FilterRequest request <span style="color:#f92672">=</span> <span style="color:#ae81ff">2</span>;<span style="color:#960050;background-color:#1e0010">
-</span></span></span><span style="display:flex;"><span><span style="color:#960050;background-color:#1e0010"></span>  MessagePush push <span style="color:#f92672">=</span> <span style="color:#ae81ff">3</span>;<span style="color:#960050;background-color:#1e0010">
+</span></span></span><span style="display:flex;"><span><span style="color:#960050;background-color:#1e0010"></span><span style="color:#75715e">// Protocol identifier: /vac/waku/filter-push/2.0.0-beta1
+</span></span></span><span style="display:flex;"><span><span style="color:#75715e"></span><span style="color:#66d9ef">message</span> <span style="color:#a6e22e">MessagePush</span> {<span style="color:#960050;background-color:#1e0010">
+</span></span></span><span style="display:flex;"><span><span style="color:#960050;background-color:#1e0010"></span>  WakuMessage waku_message <span style="color:#f92672">=</span> <span style="color:#ae81ff">1</span>;<span style="color:#960050;background-color:#1e0010">
+</span></span></span><span style="display:flex;"><span><span style="color:#960050;background-color:#1e0010"></span>  <span style="color:#66d9ef">optional</span> <span style="color:#66d9ef">string</span> pubsub_topic <span style="color:#f92672">=</span> <span style="color:#ae81ff">2</span>;<span style="color:#960050;background-color:#1e0010">
 </span></span></span><span style="display:flex;"><span><span style="color:#960050;background-color:#1e0010"></span>}<span style="color:#960050;background-color:#1e0010">
-</span></span></span></code></pre></div><h4 id="filterrpc">
-  FilterRPC
-  <a class="anchor" href="#filterrpc">#</a>
+</span></span></span></code></pre></div><h2 id="filter-subscribe">
+  Filter-Subscribe
+  <a class="anchor" href="#filter-subscribe">#</a>
+</h2>
+<p>A filter service node MUST support the <em>filter-subscribe</em> protocol
+to allow filter clients to subscribe, modify, refresh and unsubscribe a desired set of filter criteria.
+The combination of different filter criteria for a specific filter client node is termed a &ldquo;subscription&rdquo;.
+A filter client is interested in receiving messages matching the filter criteria in its registered subscriptions.</p>
+<p>Since a filter service node is consuming resources to provide this service,
+it MAY account for usage and adapt its service provision to certain clients.
+An incentive mechanism is currently planned but underspecified.</p>
+<h3 id="filter-subscribe-request">
+  Filter Subscribe Request
+  <a class="anchor" href="#filter-subscribe-request">#</a>
+</h3>
+<p>A client node MUST send all filter requests in a <code>FilterSubscribeRequest</code> message.
+This request MUST contain a <code>request_id</code>.
+The <code>request_id</code> MUST be a uniquely generated string.
+Each request MUST include a <code>filter_subscribe_type</code>, indicating the type of request.</p>
+<h3 id="filter-subscribe-response">
+  Filter Subscribe Response
+  <a class="anchor" href="#filter-subscribe-response">#</a>
+</h3>
+<p>In return to any <code>FilterSubscribeRequest</code>,
+a filter service node SHOULD respond with a <code>FilterSubscribeResponse</code> with a <code>requestId</code> matching that of the request.
+This response MUST contain a <code>status_code</code> indicating if the request was successful or not.
+Successful status codes are in the <code>2xx</code> range.
+Client nodes SHOULD consider all other status codes as error codes and assume that the requested operation had failed.
+In addition, the filter service node MAY choose to provide a more detailed status description in the <code>status_desc</code> field.</p>
+<h3 id="filter-matching">
+  Filter matching
+  <a class="anchor" href="#filter-matching">#</a>
+</h3>
+<p>In the description of each request type below,
+the term &ldquo;filter criteria&rdquo; refers to the combination of <code>pubsub_topic</code> and a set of <code>content_topics</code>.
+The request MAY include filter criteria, conditional to the selected <code>filter_subscribe_type</code>.
+If the request contains filter criteria,
+it MUST contain a <code>pubsub_topic</code>
+and the <code>content_topics</code> set MUST NOT be empty.
+A <code>WakuMessage</code> matches filter criteria when its <code>content_topic</code> is in the <code>content_topics</code> set
+and it was published on a matching <code>pubsub_topic</code>.</p>
+<h3 id="filter-subscribe-types">
+  Filter Subscribe Types
+  <a class="anchor" href="#filter-subscribe-types">#</a>
+</h3>
+<p>The following filter subscribe types are defined:</p>
+<h4 id="subscriber_ping">
+  SUBSCRIBER_PING
+  <a class="anchor" href="#subscriber_ping">#</a>
+</h4>
+<p>A filter client that sends a <code>FilterSubscribeRequest</code> with <code>filter_subscribe_type</code> set to <code>SUBSCRIBER_PING</code>
+requests that the service node SHOULD indicate if it has any active subscriptions for this client.
+The filter client SHOULD exclude any filter criteria from the request.
+The filter service node SHOULD respond with a success code if it has any active subscriptions for this client
+or an error code if not.
+The filter service node SHOULD ignore any filter criteria in the request.</p>
+<h4 id="subscribe">
+  SUBSCRIBE
+  <a class="anchor" href="#subscribe">#</a>
 </h4>
-<p>A node MUST send all Filter messages (<code>FilterRequest</code>, <code>MessagePush</code>) wrapped inside a
-<code>FilterRPC</code> this allows the node handler to determine how to handle a message as the Waku
-Filter protocol is not a request response based protocol but instead a push based system.</p>
-<p>The <code>requestId</code> MUST be a uniquely generated string. When a <code>MessagePush</code> is sent
-the <code>requestId</code> MUST match the <code>requestId</code> of the subscribing <code>FilterRequest</code> whose filters
-matched the message causing it to be pushed.</p>
-<h4 id="filterrequest">
-  FilterRequest
-  <a class="anchor" href="#filterrequest">#</a>
+<p>A filter client that sends a <code>FilterSubscribeRequest</code> with <code>filter_subscribe_type</code> set to <code>SUBSCRIBE</code>
+requests that the service node SHOULD push messages matching this filter to the client.
+The filter client MUST include the desired filter criteria in the request.
+A client MAY use this request type to <em>modify</em> an existing subscription
+by providing <em>additional</em> filter criteria in a new request.
+A client MAY use this request type to <em>refresh</em> an existing subscription
+by providing <em>the same</em> filter criteria in a new request.
+The filter service node SHOULD respond with a success code if it successfully honored this request
+or an error code if not.
+The filter service node SHOULD respond with an error code and discard the request
+if the subscribe request does not contain valid filter criteria,
+i.e. both a <code>pubsub_topic</code> <em>and</em> a non-empty <code>content_topics</code> set.</p>
+<h4 id="unsubscribe">
+  UNSUBSCRIBE
+  <a class="anchor" href="#unsubscribe">#</a>
 </h4>
-<p>A <code>FilterRequest</code> contains an optional topic, zero or more content filters and
-a boolean signifying whether to subscribe or unsubscribe to the given filters.
-True signifies &lsquo;subscribe&rsquo; and false signifies &lsquo;unsubscribe&rsquo;.</p>
-<p>A node that sends the RPC with a filter request and <code>subscribe</code> set to &rsquo;true&rsquo;
-requests that the filter node SHOULD notify the light requesting node of messages
-matching this filter.</p>
-<p>A node that sends the RPC with a filter request and <code>subscribe</code> set to &lsquo;false&rsquo;
-requests that the filter node SHOULD stop notifying the light requesting node
-of messages matching this filter if it is currently doing so.</p>
-<p>The filter matches when content filter and, optionally, a topic is matched.
-Content filter is matched when a <code>WakuMessage</code> <code>contentTopic</code> field is the same.</p>
-<p>A filter node SHOULD honor this request, though it MAY choose not to do so. If
-it chooses not to do so it MAY tell the light why. The mechanism for doing this
-is currently not specified. For notifying the light node a filter node sends a
-MessagePush message.</p>
-<p>Since such a filter node is doing extra work for a light node, it MAY also
-account for usage and be selective in how much service it provides. This
-mechanism is currently planned but underspecified.</p>
-<h4 id="messagepush">
-  MessagePush
-  <a class="anchor" href="#messagepush">#</a>
+<p>A filter client that sends a <code>FilterSubscribeRequest</code> with <code>filter_subscribe_type</code> set to <code>UNSUBSCRIBE</code>
+requests that the service node SHOULD <em>stop</em> pushing messages matching this filter to the client.
+The filter client MUST include the filter criteria it desires to unsubscribe from in the request.
+A client MAY use this request type to <em>modify</em> an existing subscription
+by providing <em>a subset of</em> the original filter criteria to unsubscribe from in a new request.
+The filter service node SHOULD respond with a success code if it successfully honored this request
+or an error code if not.
+The filter service node SHOULD respond with an error code and discard the request
+if the unsubscribe request does not contain valid filter criteria,
+i.e. both a <code>pubsub_topic</code> <em>and</em> a non-empty <code>content_topics</code> set.</p>
+<h4 id="unsubscribe_all">
+  UNSUBSCRIBE_ALL
+  <a class="anchor" href="#unsubscribe_all">#</a>
 </h4>
-<p>A filter node that has received a filter request SHOULD push all messages that
-match this filter to a light node. These <a href="./waku-message.md"><code>WakuMessage</code>&rsquo;s</a> are likely to come from the
-<code>relay</code> protocol and be kept at the Node, but there MAY be other sources or
-protocols where this comes from. This is up to the consumer of the protocol.</p>
-<p>A filter node MUST NOT send a push message for messages that have not been
-requested via a FilterRequest.</p>
-<p>If a specific light node isn&rsquo;t connected to a filter node for some specific
-period of time (e.g. a TTL), then the filter node MAY choose to not push these
-messages to the node. This period is up to the consumer of the protocol and node
-implementation, though a reasonable default is one minute.</p>
+<p>A filter client that sends a <code>FilterSubscribeRequest</code> with <code>filter_subscribe_type</code> set to <code>UNSUBSCRIBE_ALL</code>
+requests that the service node SHOULD <em>stop</em> pushing messages matching <em>any</em> filter to the client.
+The filter client SHOULD exclude any filter criteria from the request.
+The filter service node SHOULD remove any existing subscriptions for this client.
+It SHOULD respond with a success code if it successfully honored this request
+or an error code if not.</p>
+<h2 id="filter-push">
+  Filter-Push
+  <a class="anchor" href="#filter-push">#</a>
+</h2>
+<p>A filter client node MUST support the <em>filter-push</em> protocol
+to allow filter service nodes to push messages matching registered subscriptions to this client.</p>
+<p>A filter service node SHOULD push all messages
+matching the filter criteria in a registered subscription
+to the subscribed filter client.
+These <a href="./waku-message.md"><code>WakuMessage</code>s</a> are likely to come from <a href="https://rfc.vac.dev/spec/11/"><code>11/WAKU2-RELAY</code></a>,
+but there MAY be other sources or protocols where this comes from.
+This is up to the consumer of the protocol.</p>
+<p>If a message push fails,
+the filter service node MAY consider the client node to be unreachable.
+If a specific filter client node is not reachable from the service node for a period of time,
+the filter service node MAY choose to stop pushing messages to the client and remove its subscription.
+This period is up to the service node implementation.
+We consider <code>1 minute</code> to be a reasonable default.</p>
+<h3 id="message-push">
+  Message Push
+  <a class="anchor" href="#message-push">#</a>
+</h3>
+<p>Each message MUST be pushed in a <code>MessagePush</code> message.
+Each <code>MessagePush</code> MUST contain one (and only one) <code>waku_message</code>.
+If this message was received on a specific <code>pubsub_topic</code>,
+it SHOULD be included in the <code>MessagePush</code>.
+A filter client SHOULD NOT respond to a <code>MessagePush</code>.
+Since the filter protocol does not include caching or fault-tolerance,
+this is a best effort push service with no bundling
+or guaranteed retransmission of messages.
+A filter client SHOULD verify that each <code>MessagePush</code> it receives
+originated from a service node where the client has an active subscription
+and that it matches filter criteria belonging to that subscription.</p>
 <hr>
 <h1 id="future-work">
   Future Work
@@ -490,9 +604,18 @@ <h1 id="references">
     </li>
     <li><a href="#adversarial-model">Adversarial Model</a>
       <ul>
-        <li><a href="#protobuf">Protobuf</a>
+        <li><a href="#protobuf">Protobuf</a></li>
+        <li><a href="#filter-subscribe">Filter-Subscribe</a>
+          <ul>
+            <li><a href="#filter-subscribe-request">Filter Subscribe Request</a></li>
+            <li><a href="#filter-subscribe-response">Filter Subscribe Response</a></li>
+            <li><a href="#filter-matching">Filter matching</a></li>
+            <li><a href="#filter-subscribe-types">Filter Subscribe Types</a></li>
+          </ul>
+        </li>
+        <li><a href="#filter-push">Filter-Push</a>
           <ul>
-            <li></li>
+            <li><a href="#message-push">Message Push</a></li>
           </ul>
         </li>
       </ul>
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@@ -343,7 +343,7 @@ <h1 id="static-sharding">
 but choosing shards in the global cluster has a higher probability of sharing the shard with other apps.
 This offers k-anonymity and better connectivity, but comes at a higher bandwidth cost.</p>
 <p>The name of the pubsub topic corresponding to a given static shard is specified as</p>
-<p><code>/waku/2/rs/&lt;shard_cluster_index&gt;/&lt;shard_number&gt;</code>,</p>
+<p><code>/waku/2/rs/&lt;cluster_id&gt;/&lt;shard_number&gt;</code>,</p>
 <p>an example for the 2nd shard in the global shard cluster:</p>
 <p><code>/waku/2/rs/0/2</code>.</p>
 <blockquote>
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@@ -365,7 +365,7 @@ <h2 id="shard-allocation">
 </tbody>
 </table>
 <p>Shard indices are mapped to pubsub topic names as follows (specified in <a href="/spec/51/">51/WAKU2-RELAY-SHARDING</a>).</p>
-<p><code>/waku/2/rs/&lt;shard_cluster_index&gt;/&lt;shard_number&gt;</code></p>
+<p><code>/waku/2/rs/&lt;cluster_id&gt;/&lt;shard_number&gt;</code></p>
 <p>an example for the shard with index <code>18</code> in the Status shard cluster:</p>
 <p><code>/waku/2/rs/16/18</code></p>
 <p>In other words, the mesh network with the pubsub topic name <code>/waku/2/rs/16/18</code> carries messages associated with shard <code>18</code> in the Status shard cluster.</p>
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@@ -281,7 +281,7 @@ <h2 id="network-shards">
 <p>Traffic in the Waku Network is sharded into eight <a href="https://rfc.vac.dev/spec/17/">17/WAKU2-RLN-RELAY</a> pubsub topics.
 Each pubsub topic is named according to the static shard naming format
 defined in <a href="https://rfc.vac.dev/spec/51/">51/WAKU2-RELAY-SHARDING</a>
-with <code>&lt;shard_cluster_index&gt;</code> set to <code>1</code> and
+with <code>&lt;cluster_id&gt;</code> set to <code>1</code> and
 <code>&lt;shard_number&gt;</code> occupying the range <code>0</code> to <code>7</code>.
 In other words, the Waku Network is a <a href="https://rfc.vac.dev/spec/17/">17/WAKU2-RLN-RELAY</a> network
 routed on the combination of the eight pubsub topics:</p>
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