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-rw-r--r--doc/zmq_setsockopt.txt19
1 files changed, 19 insertions, 0 deletions
diff --git a/doc/zmq_setsockopt.txt b/doc/zmq_setsockopt.txt
index ed3b3a7..4b639c5 100644
--- a/doc/zmq_setsockopt.txt
+++ b/doc/zmq_setsockopt.txt
@@ -284,6 +284,7 @@ Option value unit:: connections
Default value:: 100
Applicable socket types:: all, only for connection-oriented transports.
+
ZMQ_MAXMSGSIZE: Maximum acceptable inbound message size
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -296,6 +297,7 @@ Option value unit:: bytes
Default value:: -1
Applicable socket types:: all
+
ZMQ_MULTICAST_HOPS: Maximum network hops for multicast packets
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -309,6 +311,23 @@ Option value unit:: network hops
Default value:: 1
Applicable socket types:: all, when using multicast transports
+
+ZMQ_FILTER: Switches message filtering on or off
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+If set to 1, messages are filtered according to subcriptions as expected.
+If set to 0, messages are not filtered. This is a performance tweak. If a device
+receives a message from XSUB socket and it is about to send it to XPUB socket
+immediately, filtering would be done twice. We can thus turn off filtering in
+XSUB socket and rely on filtering in XPUB socket.
+
+[horizontal]
+Option value type:: int
+Option value unit:: boolean
+Default value:: 1
+Applicable socket types:: ZMQ_SUB, ZMQ_XSUB
+
+
RETURN VALUE
------------
The _zmq_setsockopt()_ function shall return zero if successful. Otherwise it