ZMQ_IDENTITY option re-introduced

Signed-off-by: Martin Sustrik <sustrik@250bpm.com>

1 files changed, 16 insertions, 0 deletions

diff --git a/doc/zmq_getsockopt.txt b/doc/zmq_getsockopt.txt
index 36abbdb..252834e 100644
--- a/doc/zmq_getsockopt.txt
+++ b/doc/zmq_getsockopt.txt
@@ -117,6 +117,22 @@ Option value unit:: N/A (bitmap)
 Default value:: 0
 Applicable socket types:: N/A
 
+ZMQ_IDENTITY: Set socket identity
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+The 'ZMQ_IDENTITY' option shall retrieve the identity of the specified 'socket'.
+Socket identity is used only by request/reply pattern. Namely, it can be used
+in tandem with ROUTER socket to route messages to the peer with specific
+identity.
+
+Identity should be at least one byte and at most 255 bytes long. Identities
+starting with binary zero are reserved for use by 0MQ infrastructure.
+
+[horizontal]
+Option value type:: binary data
+Option value unit:: N/A
+Default value:: NULL
+Applicable socket types:: all
+
 
 ZMQ_RATE: Retrieve multicast data rate
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~