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| author | Martin Sustrik <sustrik@fastmq.commkdir> | 2010-01-21 12:07:42 +0100 |
|---|---|---|
| committer | Martin Sustrik <sustrik@fastmq.commkdir> | 2010-01-21 12:07:42 +0100 |
| commit | b1b66df37c0b05ba05d9636234bad0cc02a1bd03 (patch) | |
| tree | a7003b0b7c9bde4d8ca25e88ca4eeaddb385c5e2 | |
| parent | 66ef22993f22a0d47703c1203f57d95c4316bc70 (diff) | |
PGM man page improved
| -rw-r--r-- | man/man7/zmq_pgm.7 | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/man/man7/zmq_pgm.7 b/man/man7/zmq_pgm.7 index fb37735..6d70a56 100644 --- a/man/man7/zmq_pgm.7 +++ b/man/man7/zmq_pgm.7 @@ -18,6 +18,14 @@ socket option. PGM transport can be used only with ZMQ_PUB and ZMQ_SUB sockets. +Caution: PGM protocol runs directly on top of IP protocol and thus needs to +open raw IP socket. On some operating systems this operation requires special +privileges. On Linux, for example, you would need to either run your application +as root or set adequate capabilities for your executable. Alternative approach +is to use UDP transport, +.IR zmq_udp(7) , +that stacks PGM on top of UDP and thus needs no special privileges. + .SH CONNECTION STRING Connection string for PGM transport is "pgm://" followed by an IP address |