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Diffstat (limited to 'man/man7/zmq_udp.7')
| -rw-r--r-- | man/man7/zmq_udp.7 | 32 |
1 files changed, 31 insertions, 1 deletions
diff --git a/man/man7/zmq_udp.7 b/man/man7/zmq_udp.7 index 16cbf08..bfebc1c 100644 --- a/man/man7/zmq_udp.7 +++ b/man/man7/zmq_udp.7 @@ -2,8 +2,38 @@ .SH NAME UDP-based tranport for 0MQ .SH SYNOPSIS -.SH DESCRIPTION + +UDP transport is exactly the same as PGM transport except that PGM packets +are encapsulated in UDP packets. Rationale for this transport is that user-space +implementation of PGM requires right to create raw sockets (PGM is located +directly on top of IP layer in the netwroking stack), which is often not +available. UDP encapsulation solves this problem, however, it adds some overhead +related to creating and transferring UDP packet headers. + +.SH CONNECTION STRING + +Connection string for UDP transport is "udp://" followed by an IP adress +of the NIC to use, semicolon, IP adress of the multicast group, colon and +port numbrt. IP address of the NIC can be either its numeric representation +or the name of the NIC as reported by operating system. IP address of the +mutlicast group should be specified in the numeric representation. For example: + +.nf + udp://eth0:224.0.0.1:5555 + udp://lo:230.0.0.0:6666 + udp://192.168.0.111:224.0.0.1:5555 +.fi + +.SH WIRE FORMAT + +Same as with PGM transport except for UDP packet headers. + .SH "SEE ALSO" + +.BR zmq_pgm (7) +.BR zmq_tcp (7) +.BR zmq_inproc (7) + .SH AUTHOR Martin Sustrik <sustrik at 250bpm dot com> |