[#2645] Added max-send-queue-size

doc/sphinx/arm/hooks-lease-query.rst

@@ -410,6 +410,13 @@ with possible entries:
 
     Maximum number of leases to return in a single fetch (default 100).
 
+- ``max-send-queue-size``
+
+    Maximum number of messages of the connection send queue before
+    queuing received queries (default 0 which means no limit). Beware
+    that a sent message does not mean that previous messages were received:
+    both kernel and network can buffer them.
+
 There should be common TLS parameters when TLS will be supported.
 
 For instance:
@@ -432,7 +439,8 @@ For instance:
                       "max-requester-connections" : 10,
                       "max-concurrent-queries": 4,
                       "max-requester-idle-time" :  300,
-                      "max-leases-per-fetch" : 100
+                      "max-leases-per-fetch" : 100,
+                      "max-send-queue-size": 0
                  }
              }
          }