DOC: config: Add documentation about spop mode for backends

The SPOE was refactored. Now backends referenced by a SPOE filter must use
the spop mode to be able to use the spop multiplexer for server connections.
The "spop" mode was added in the list of supported mode for backends.

diff --git a/doc/configuration.txt b/doc/configuration.txt
index 62bfff2f077bba6873a239c4f9fccd374bdc08e1..529061bf271338d51332651ab9ca9b2e25d0b048 100644 (file)
--- a/doc/configuration.txt
+++ b/doc/configuration.txt
@@ -8612,7 +8612,7 @@ maxconn <conns>
   See also : "server", global section's "maxconn", "fullconn"
 
 
-mode { tcp|http|log }
+mode { tcp|http|log|spop }
   Set the running mode or protocol of the instance
   May be used in sections :   defaults | frontend | listen | backend
                                  yes   |    yes   |   yes  |   yes
@@ -8637,6 +8637,10 @@ mode { tcp|http|log }
               the server's address with the "udp@" prefix. Common backend and
               server features are supported, but not TCP or HTTP specific ones.
 
+    spop      When used in a backend section, it will turn the backend into a
+              log backend. This mode is mandatory and automatically set, if
+              necessary, for backends referenced by SPOE engines.
+
   When doing content switching, it is mandatory that the frontend and the
   backend are in the same mode (generally HTTP), otherwise the configuration
   will be refused.