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-rw-r--r--README17
1 files changed, 17 insertions, 0 deletions
diff --git a/README b/README
index b538c68..5703c46 100644
--- a/README
+++ b/README
@@ -197,3 +197,20 @@ Flood control:
If the client is blocking it is preferable that messages
are sent in such order that memory is freed up as fast
as possible.
+
+Echos:
+ By default, if a client sends a message with a routing key it is
+ subscribed to, that client will receive that message. The server
+ may however choose to implement control messages for selecting
+ whether this happens. Disabling echoing is useful for implementing
+ slave servers that only send messages upwords in the server
+ hierarchy when necessary. The control messages for controlling
+ echoing are
+
+ ^CMSG echo/off\(\x00.*\)*$
+
+ Disable echoing.
+
+ ^CMSG echo/on\(\x00.*\)*$
+
+ Reenable echoing.