Clarify SHM usage when other transports are enabled (#374)

Signed-off-by: JLBuenoLopez-eProsima <joseluisbueno@eprosima.com>
eProsima · Jul 4, 2022 · a6bcf07 · a6bcf07
1 parent a91a3ce
commit a6bcf07
Showing 1 changed file with 6 additions and 2 deletions.
diff --git a/docs/fastdds/transport/shared_memory/shared_memory.rst b/docs/fastdds/transport/shared_memory/shared_memory.rst
@@ -208,8 +208,12 @@ The examples below show this procedure in both C++ code and XML file.
 
 .. note::
 
-  When two participants on the same machine have SHM transport enabled, all communications between them are
-  automatically performed by SHM transport only.
+  In case that several transports are enabled, the discovery traffic is always performed using the UDP/TCP transport,
+  even if the SHM transport is enabled in both participants running in the same machine.
+  This may cause discovery issues if one or several of the participants only has SHM enabled and other participants use
+  some other transport at the same time.
+  Also, when two participants on the same machine have SHM transport enabled, the user data communication between them
+  is automatically performed by SHM transport only.
   The rest of the enabled transports are not used between those two participants.