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-.TH zmq_udp 7 "" "(c)2007-2010 iMatix Corporation" "0MQ User Manuals"
-.SH NAME
-0MQ UDP Transport \- reliable multicast transport
-.SH SYNOPSIS
-
-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 networking 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 address
-of the NIC to use, semicolon, IP address of the multicast group, colon and
-port number. 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
-multicast 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
-
-Note that NIC names are not standardised by POSIX. They tend to be rather
-arbitrary and platform dependent. Say, "eth0" on Linux would correspond to "en0"
-on OSX and "e1000g" on Solaris. On Windows platform, as there are no short NIC
-names available, you have to use numeric IP addresses instead.
-
-.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_ipc (7)
-.BR zmq_inproc (7)
-
-.SH AUTHOR
-Martin Sustrik <sustrik at 250bpm dot com>
-