diff --git a/crates/projection-irc/tests/lib.rs b/crates/projection-irc/tests/lib.rs
index c3efd2a..240a067 100644
--- a/crates/projection-irc/tests/lib.rs
+++ b/crates/projection-irc/tests/lib.rs
@@ -48,6 +48,31 @@ impl<'a> TestScope<'a> {
         Ok(())
     }
 
+    async fn expect_that(&mut self, validate: impl FnOnce(&str) -> bool) -> Result<()> {
+        let len = tokio::time::timeout(self.timeout, read_irc_message(&mut self.reader, &mut self.buffer)).await??;
+        let msg = std::str::from_utf8(&self.buffer[..len - 2])?;
+        if !validate(msg) {
+            return Err(anyhow!("unexpected message: {:?}", msg));
+        }
+        self.buffer.clear();
+        Ok(())
+    }
+
+    async fn expect_server_introduction(&mut self, nick: &str) -> Result<()> {
+        self.expect(&format!(":testserver 001 {nick} :Welcome to testserver Server")).await?;
+        self.expect(&format!(":testserver 002 {nick} :Welcome to testserver Server")).await?;
+        self.expect(&format!(":testserver 003 {nick} :Welcome to testserver Server")).await?;
+        self.expect(&format!(
+            ":testserver 004 {nick} testserver {APP_VERSION} r CFILPQbcefgijklmnopqrstvz"
+        ))
+        .await?;
+        self.expect(&format!(
+            ":testserver 005 {nick} CHANTYPES=# :are supported by this server"
+        ))
+        .await?;
+        Ok(())
+    }
+
     async fn expect_eof(&mut self) -> Result<()> {
         let mut buf = [0; 1];
         let len = tokio::time::timeout(self.timeout, self.reader.read(&mut buf)).await??;
@@ -113,18 +138,7 @@ async fn scenario_basic() -> Result<()> {
     s.send("PASS password").await?;
     s.send("NICK tester").await?;
     s.send("USER UserName 0 * :Real Name").await?;
-    s.expect(":testserver 001 tester :Welcome to testserver Server").await?;
-    s.expect(":testserver 002 tester :Welcome to testserver Server").await?;
-    s.expect(":testserver 003 tester :Welcome to testserver Server").await?;
-    s.expect(
-        format!(
-            ":testserver 004 tester testserver {} r CFILPQbcefgijklmnopqrstvz",
-            &APP_VERSION
-        )
-        .as_str(),
-    )
-    .await?;
-    s.expect(":testserver 005 tester CHANTYPES=# :are supported by this server").await?;
+    s.expect_server_introduction("tester").await?;
     s.expect_nothing().await?;
     s.send("QUIT :Leaving").await?;
     s.expect(":testserver ERROR :Leaving the server").await?;
@@ -138,6 +152,133 @@ async fn scenario_basic() -> Result<()> {
     Ok(())
 }
 
+#[tokio::test]
+async fn scenario_force_join_msg() -> Result<()> {
+    let mut server = TestServer::start().await?;
+
+    // test scenario
+
+    server.storage.create_user("tester").await?;
+    server.storage.set_password("tester", "password").await?;
+
+    let mut stream1 = TcpStream::connect(server.server.addr).await?;
+    let mut s1 = TestScope::new(&mut stream1);
+    let mut stream2 = TcpStream::connect(server.server.addr).await?;
+    let mut s2 = TestScope::new(&mut stream2);
+
+    s1.send("PASS password").await?;
+    s1.send("NICK tester").await?;
+    s1.send("USER UserName 0 * :Real Name").await?;
+    s1.expect_server_introduction("tester").await?;
+    s1.expect_nothing().await?;
+
+    s2.send("PASS password").await?;
+    s2.send("NICK tester").await?;
+    s2.send("USER UserName 0 * :Real Name").await?;
+    s2.expect_server_introduction("tester").await?;
+    s2.expect_nothing().await?;
+
+    // We join the channel from the first connection
+    s1.send("JOIN #test").await?;
+    s1.expect(":tester JOIN #test").await?;
+    s1.expect(":testserver 332 tester #test :New room").await?;
+    s1.expect(":testserver 353 tester = #test :tester").await?;
+    s1.expect(":testserver 366 tester #test :End of /NAMES list").await?;
+
+    // And the second connection should receive the JOIN message (forced JOIN)
+    s2.expect(":tester JOIN #test").await?;
+    s2.expect(":testserver 332 tester #test :New room").await?;
+    s2.expect(":testserver 353 tester = #test :tester").await?;
+    s2.expect(":testserver 366 tester #test :End of /NAMES list").await?;
+
+    // We send a message to the channel from the second connection
+    s2.send("PRIVMSG #test :Hello").await?;
+    // We should not receive an acknowledgement from the server
+    s2.expect_nothing().await?;
+    // But we should receive this message from the first connection
+    s1.expect(":tester PRIVMSG #test :Hello").await?;
+
+    s1.send("QUIT :Leaving").await?;
+    s1.expect(":testserver ERROR :Leaving the server").await?;
+    s1.expect_eof().await?;
+
+    // Closing a connection does not kick you from the channel on a different connection
+    s2.expect_nothing().await?;
+
+    s2.send("QUIT :Leaving").await?;
+    s2.expect(":testserver ERROR :Leaving the server").await?;
+    s2.expect_eof().await?;
+
+    stream1.shutdown().await?;
+    stream2.shutdown().await?;
+
+    // wrap up
+
+    server.server.terminate().await?;
+    Ok(())
+}
+
+#[tokio::test]
+async fn scenario_two_users() -> Result<()> {
+    let mut server = TestServer::start().await?;
+
+    // test scenario
+
+    server.storage.create_user("tester1").await?;
+    server.storage.set_password("tester1", "password").await?;
+    server.storage.create_user("tester2").await?;
+    server.storage.set_password("tester2", "password").await?;
+
+    let mut stream1 = TcpStream::connect(server.server.addr).await?;
+    let mut s1 = TestScope::new(&mut stream1);
+    let mut stream2 = TcpStream::connect(server.server.addr).await?;
+    let mut s2 = TestScope::new(&mut stream2);
+
+    s1.send("PASS password").await?;
+    s1.send("NICK tester1").await?;
+    s1.send("USER UserName 0 * :Real Name").await?;
+    s1.expect_server_introduction("tester1").await?;
+    s1.expect_nothing().await?;
+
+    s2.send("PASS password").await?;
+    s2.send("NICK tester2").await?;
+    s2.send("USER UserName 0 * :Real Name").await?;
+    s2.expect_server_introduction("tester2").await?;
+    s2.expect_nothing().await?;
+
+    // Join the channel from the first user
+    s1.send("JOIN #test").await?;
+    s1.expect(":tester1 JOIN #test").await?;
+    s1.expect(":testserver 332 tester1 #test :New room").await?;
+    s1.expect(":testserver 353 tester1 = #test :tester1").await?;
+    s1.expect(":testserver 366 tester1 #test :End of /NAMES list").await?;
+    // Then join the channel from the second user
+    s2.send("JOIN #test").await?;
+    s2.expect(":tester2 JOIN #test").await?;
+    s2.expect(":testserver 332 tester2 #test :New room").await?;
+    s2.expect_that(|msg| {
+        msg == ":testserver 353 tester2 = #test :tester1 tester2"
+            || msg == ":testserver 353 tester2 = #test :tester2 tester1"
+    })
+    .await?;
+    s2.expect(":testserver 366 tester2 #test :End of /NAMES list").await?;
+    // The first user should receive the JOIN message from the second user
+    s1.expect(":tester2 JOIN #test").await?;
+    s1.expect_nothing().await?;
+    s2.expect_nothing().await?;
+    // Send a message from the second user
+    s2.send("PRIVMSG #test :Hello").await?;
+    // The first user should receive the message
+    s1.expect(":tester2 PRIVMSG #test :Hello").await?;
+    // Leave the channel from the first user
+    // TODO implement irc PART command
+    // s1.send("PART #test").await?;
+    // s1.expect(":tester1 PART #test").await?;
+    // The second user should receive the PART message
+    // s2.expect(":tester1 PART #test").await?;
+    Ok(())
+}
+
 /*
 IRC SASL doc: https://ircv3.net/specs/extensions/sasl-3.1.html
 AUTHENTICATE doc: https://modern.ircdocs.horse/#authenticate-message
@@ -168,18 +309,7 @@ async fn scenario_cap_full_negotiation() -> Result<()> {
 
     s.send("CAP END").await?;
 
-    s.expect(":testserver 001 tester :Welcome to testserver Server").await?;
-    s.expect(":testserver 002 tester :Welcome to testserver Server").await?;
-    s.expect(":testserver 003 tester :Welcome to testserver Server").await?;
-    s.expect(
-        format!(
-            ":testserver 004 tester testserver {} r CFILPQbcefgijklmnopqrstvz",
-            &APP_VERSION
-        )
-        .as_str(),
-    )
-    .await?;
-    s.expect(":testserver 005 tester CHANTYPES=# :are supported by this server").await?;
+    s.expect_server_introduction("tester").await?;
     s.expect_nothing().await?;
     s.send("QUIT :Leaving").await?;
     s.expect(":testserver ERROR :Leaving the server").await?;
@@ -217,18 +347,7 @@ async fn scenario_cap_short_negotiation() -> Result<()> {
 
     s.send("CAP END").await?;
 
-    s.expect(":testserver 001 tester :Welcome to testserver Server").await?;
-    s.expect(":testserver 002 tester :Welcome to testserver Server").await?;
-    s.expect(":testserver 003 tester :Welcome to testserver Server").await?;
-    s.expect(
-        format!(
-            ":testserver 004 tester testserver {} r CFILPQbcefgijklmnopqrstvz",
-            &APP_VERSION
-        )
-        .as_str(),
-    )
-    .await?;
-    s.expect(":testserver 005 tester CHANTYPES=# :are supported by this server").await?;
+    s.expect_server_introduction("tester").await?;
     s.expect_nothing().await?;
     s.send("QUIT :Leaving").await?;
     s.expect(":testserver ERROR :Leaving the server").await?;
@@ -272,18 +391,7 @@ async fn scenario_cap_sasl_fail() -> Result<()> {
 
     s.send("CAP END").await?;
 
-    s.expect(":testserver 001 tester :Welcome to testserver Server").await?;
-    s.expect(":testserver 002 tester :Welcome to testserver Server").await?;
-    s.expect(":testserver 003 tester :Welcome to testserver Server").await?;
-    s.expect(
-        format!(
-            ":testserver 004 tester testserver {} r CFILPQbcefgijklmnopqrstvz",
-            &APP_VERSION
-        )
-        .as_str(),
-    )
-    .await?;
-    s.expect(":testserver 005 tester CHANTYPES=# :are supported by this server").await?;
+    s.expect_server_introduction("tester").await?;
     s.expect_nothing().await?;
     s.send("QUIT :Leaving").await?;
     s.expect(":testserver ERROR :Leaving the server").await?;
diff --git a/crates/proto-irc/src/server.rs b/crates/proto-irc/src/server.rs
index 6e1bd66..c751e23 100644
--- a/crates/proto-irc/src/server.rs
+++ b/crates/proto-irc/src/server.rs
@@ -317,10 +317,15 @@ impl ServerMessageBody {
                 writer.write_all(b" = ").await?;
                 chan.write_async(writer).await?;
                 writer.write_all(b" :").await?;
-                for member in members {
+                {
+                    let member = &members.head;
                     writer.write_all(member.prefix.to_string().as_bytes()).await?;
                     writer.write_all(member.nick.as_bytes()).await?;
+                }
+                for member in &members.tail {
                     writer.write_all(b" ").await?;
+                    writer.write_all(member.prefix.to_string().as_bytes()).await?;
+                    writer.write_all(member.nick.as_bytes()).await?;
                 }
             }
             ServerMessageBody::N366NamesReplyEnd { client, chan } => {