diff --git a/components/messenger.rst b/components/messenger.rst
index c17220d25a3..63761ec3dfc 100644
--- a/components/messenger.rst
+++ b/components/messenger.rst
@@ -54,7 +54,9 @@ Concepts
For instance: logging, validating a message, starting a transaction, ...
They are also responsible for calling the next middleware in the chain,
which means they can tweak the envelope, by adding stamps to it or even
- replacing it, as well as interrupt the middleware chain.
+ replacing it, as well as interrupt the middleware chain. Middleware are called
+ both when a message is originally dispatched and again later when a message
+ is received from a tansport,
**Envelope**
Messenger specific concept, it gives full flexibility inside the message bus,
@@ -174,6 +176,8 @@ Hence you can inspect the envelope content and its stamps, or add any::
// You could for example add another stamp.
$envelope = $envelope->with(new AnotherStamp(/* ... */));
+ } else {
+ // Message was just originally dispatched
}
return $stack->next()->handle($envelope, $stack);
diff --git a/messenger.rst b/messenger.rst
index 1c4f8c06d91..185da3f5640 100644
--- a/messenger.rst
+++ b/messenger.rst
@@ -1297,6 +1297,10 @@ for each bus looks like this:
These middleware names are actually shortcuts names. The real service ids
are prefixed with ``messenger.middleware.``.
+The middleware are executed when the message is dispatched but *also* again when
+a message is received via the worker (for messages that were sent to a transport
+to be handled asynchronously). Keep this in mind if you create your own middleware.
+
You can add your own middleware to this list, or completely disable the default
middleware and *only* include your own:
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