From 6853f106712b89b891a27e9984bfb5273548a796 Mon Sep 17 00:00:00 2001
From: Mike Bremford <mike@bfo.com>
Date: Wed, 18 Aug 2021 10:02:09 +0100
Subject: [PATCH 1/2] Add username from CONNECT to client after authenticate
 succes

---
 docs/Client.md          | 9 +++++++++
 lib/handlers/connect.js | 4 +++-
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/docs/Client.md b/docs/Client.md
index a0c11c2f..713b028d 100644
--- a/docs/Client.md
+++ b/docs/Client.md
@@ -72,6 +72,15 @@ It is available only after `CONNACK (rc=0)`, otherwise it is `null` in cases:
 - after `CONNACK (rc!=0)` response
 - `connectionError` raised by aedes
 
+## client.username
+
+- `<string>` __Default__: `null`
+
+Client username, specified by CONNECT packet.
+
+It is available only after a successful call to `aedes.authenticate()`, where it
+will be set to the username specifed by the client, or `null` if no username was supplied.
+
 ## client.clean
 
 - `<boolean>` __Default__: `true`
diff --git a/lib/handlers/connect.js b/lib/handlers/connect.js
index 14865f36..e35c3c92 100644
--- a/lib/handlers/connect.js
+++ b/lib/handlers/connect.js
@@ -98,9 +98,10 @@ function init (client, packet, done) {
 function authenticate (arg, done) {
   const client = this.client
   client.pause()
+  let username = this.username;
   client.broker.authenticate(
     client,
-    this.packet.username,
+    username,
     this.packet.password,
     negate)
 
@@ -113,6 +114,7 @@ function authenticate (arg, done) {
     }
     if (!err && successful) {
       client._authorized = true
+      client.username = username || null;
       return done()
     }
 

From 582ee500828f05a403cb62800cdc5afc3e54796e Mon Sep 17 00:00:00 2001
From: Mike Bremford <mike@bfo.com>
Date: Wed, 18 Aug 2021 10:54:03 +0100
Subject: [PATCH 2/2] Check username is undefined before setting it

---
 lib/handlers/connect.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lib/handlers/connect.js b/lib/handlers/connect.js
index e35c3c92..5a42ce96 100644
--- a/lib/handlers/connect.js
+++ b/lib/handlers/connect.js
@@ -114,7 +114,10 @@ function authenticate (arg, done) {
     }
     if (!err && successful) {
       client._authorized = true
-      client.username = username || null;
+      if (typeof(client.username) == "undefined") {
+        // check it's undefined, it could have been set in preConnect
+        client.username = username || null;
+      }
       return done()
     }