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authorMartin Sustrik <sustrik@250bpm.com>2011-03-23 17:01:39 +0100
committerMartin Sustrik <sustrik@250bpm.com>2011-03-23 17:01:39 +0100
commitb45b68ae4ab90af1ce35deec52b0c0492a1f49d4 (patch)
treeb5ad48702e03088b957fab8ea31e90029270ec41 /doc/zmq_pgm.txt
parentf5e6d67948b8c71c2444046f6246aebab16546dc (diff)
ZMQ_MCAST_LOOP removed
Multicast loopback is not a real multicast, rather a kernel-space simulation. Moreover, it tends to be rather unreliable and lossy. Removing the option will force users to use transports better suited for the job, such as inproc or ipc. Signed-off-by: Martin Sustrik <sustrik@250bpm.com>
Diffstat (limited to 'doc/zmq_pgm.txt')
-rw-r--r--doc/zmq_pgm.txt5
1 files changed, 2 insertions, 3 deletions
diff --git a/doc/zmq_pgm.txt b/doc/zmq_pgm.txt
index d9bce5a..91b1678 100644
--- a/doc/zmq_pgm.txt
+++ b/doc/zmq_pgm.txt
@@ -23,9 +23,8 @@ UDP datagrams (the 'epgm' transport).
The 'pgm' and 'epgm' transports can only be used with the 'ZMQ_PUB' and
'ZMQ_SUB' socket types.
-Further, PGM sockets are rate limited by default and incur a performance
-penalty when used over a loop-back interface. For details, refer to the
-'ZMQ_RATE', 'ZMQ_RECOVERY_IVL' and 'ZMQ_MCAST_LOOP' options documented in
+Further, PGM sockets are rate limited by default. For details, refer to the
+'ZMQ_RATE', and 'ZMQ_RECOVERY_IVL' options documented in
linkzmq:zmq_setsockopt[3].
CAUTION: The 'pgm' transport implementation requires access to raw IP sockets.