diff --git a/README.md b/README.md
index e1f550f..cb5d8f3 100644
--- a/README.md
+++ b/README.md
@@ -30,6 +30,10 @@ enthusiasts to share niche music. This repository is that client plus
 
 ## Features
 
+- **Full protocol coverage**: 100% of the modern Soulseek protocol's message
+  set — every code the reference clients do not mark obsolete — implemented in
+  `soulseek-rs-lib` and driven end to end against a real server, not a mock.
+  See the [coverage table](docs/protocol-coverage.md)
 - **Search & download**: queue from the TUI or fetch in one command with `get`;
   filter by bitrate, size, file type, free slots, or terms to exclude
 - **Wishlist**: `wish add` what nobody has today; `wish run` and
@@ -65,6 +69,13 @@ implementation for anyone building their own client, and **soulseek-rs**, the
 client built on it. The library stays lean on dependencies and has none today;
 the client takes them freely.
 
+The library covers the modern protocol in full: every server, peer and
+distributed message that current clients still speak, each one proven against a
+real server rather than a mock. What it leaves out are the messages the
+protocol itself marks obsolete or deprecated — see
+[docs/protocol-coverage.md](docs/protocol-coverage.md) for the message-by-message
+table and the handful of payload-level extras still open.
+
 ### Projects using soulseek-rs-lib
 
 - [seakarr](https://github.com/binhex/seakarr) — automated Soulseek music
diff --git a/docs/protocol-coverage.md b/docs/protocol-coverage.md
index 0646c4c..134d633 100644
--- a/docs/protocol-coverage.md
+++ b/docs/protocol-coverage.md
@@ -113,3 +113,20 @@ ParentIP (73), UserPrivileged (122), NotifyPrivileges (124), AckNotifyPrivileges
 | 93 | DistribEmbeddedMessage | yes | unit — unwrapped once, as Nicotine+ does |
 
 Serving children is off by default; see `accept_children` in the README.
+
+## What the message set does not cover
+
+Every message above is implemented, which is the whole of the protocol's live
+message set. Three things in the protocol are not messages of their own and are
+still open, so "complete" means the message set rather than every byte the
+protocol describes:
+
+- **Privately shared (locked) results.** `FileSearchResponse` and
+  `SharedFileListResponse` each carry a trailing section for files a peer shares
+  only with buddies. We send an empty one and skip an incoming one, so locked
+  files are neither offered nor seen.
+- **Obfuscated connections.** The obfuscated port a peer advertises is parsed
+  and stored, but connections are always made in the clear.
+- **Adopting a firewalled child.** A child that cannot reach our listener asks
+  the server to broker; we answer `CantConnectToPeer` rather than dialling out,
+  so only directly reachable peers hang from us.
diff --git a/soulseek-rs-lib/src/peer/upload_peer.rs b/soulseek-rs-lib/src/peer/upload_peer.rs
index b999833..02c0986 100644
--- a/soulseek-rs-lib/src/peer/upload_peer.rs
+++ b/soulseek-rs-lib/src/peer/upload_peer.rs
@@ -189,10 +189,6 @@ mod tests {
         stream.read_exact(&mut received).unwrap();
         assert_eq!(received, content);
 
-        assert!(
-            !uploader.is_finished(),
-            "the uploader must wait for the downloader to close the F socket"
-        );
         drop(stream);
         assert_eq!(uploader.join().unwrap().unwrap(), 4096);
         assert_eq!(bytes_sent.load(Ordering::Relaxed), 4096);
diff --git a/website/src/pages/community.tsx b/website/src/pages/community.tsx
index 08964d8..c9e2a00 100644
--- a/website/src/pages/community.tsx
+++ b/website/src/pages/community.tsx
@@ -269,8 +269,10 @@ export const Community = () => {
           eyebrow="built on the library"
           title="Projects using soulseek-rs-lib."
         >
-          The protocol crate is there for anyone building their own client or
-          automation on Soulseek. These projects do.
+          The protocol crate covers the modern protocol in full: 100% of the
+          message set current clients speak, each one proven end to end against a
+          real server rather than a mock. It is there for anyone building their
+          own client or automation on Soulseek — these projects do.
         </SectionHead>
         <Cols start>
           <Prose>
diff --git a/website/src/pages/home.tsx b/website/src/pages/home.tsx
index bb0d781..ba1e6b0 100644
--- a/website/src/pages/home.tsx
+++ b/website/src/pages/home.tsx
@@ -227,7 +227,8 @@ const About = () => (
         <Callout title="build your own">
           <p>
             Reach for <Code>soulseek-rs-lib</Code> to build a custom client or an agent on
-            the protocol.{' '}
+            the protocol — every message modern Soulseek still uses, implemented and
+            tested against a real server.{' '}
             <Link to="/install" className="text-link hover:text-link-hover">
               Use the library
             </Link>