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Full Discussion: 127.0.0.1 vs 0.0.0.0
Special Forums IP Networking 127.0.0.1 vs 0.0.0.0 Post 302952367 by fpmurphy on Tuesday 18th of August 2015 10:54:37 AM
Old 08-18-2015
Unfortunately, 0.0.0.0 has different meanings depending on where it's used. The formal definition is given in RFC1122 Section 3.1.2.3, i.e this host on this network. Specifically, all available IP addresses on this host.

Assuming you are talking about a UNIX-like OS and not Microsoft Window, I have never seen 0.0.0.0 defined in /etc/hosts but have nearly always seen 127.0.0.1 defined. There simply is no reason to put 0.0.0.0 in /etc/hosts.
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COMPOSITE_MIDI(7)						     Reference							 COMPOSITE_MIDI(7)

NAME
composite_midi - Default MIDI Implementation for Composite DESCRIPTION
The default MIDI implementation for Composite is a fixed MIDI implementation. Future versions of Composite will allow you to redefine the MIDI implementation, but a default MIDI Implementation will always be provided. This description of the MIDI implementation only covers the sampler plugin. At this time it does not apply to the composite-gui. MIDI IMPLEMENTATION
+------------------------+-------------+-----------------+-------------------------+ | Function | Transmitted | Recognized | Remarks | +------------------------+-------------+-----------------+-------------------------+ | Basic Channel | NO | 1-16 | Always listens in OMNI | | | | | mode, will change in | | | | | future. | +------------------------+-------------+-----------------+-------------------------+ | Mode | NO | NO | | +------------------------+-------------+-----------------+-------------------------+ | Note Number | NO | 36-127 | Depends on drum kit. | +------------------------+-------------+-----------------+-------------------------+ | Note Velocity | NO | 0-127 | | +------------------------+-------------+-----------------+-------------------------+ |Polyphonic After Touch | NO | NO | | +------------------------+-------------+-----------------+-------------------------+ | Channel After Touch | NO | NO | | +-----------------+------+-------------+-----------------+-------------------------+ | | 0 | NO | 0-127 | Bank (coarse) | | +------+-------------+-----------------+-------------------------+ | | 7 | NO | 0(min)-127(max) | Volume (coarse) | | +------+-------------+-----------------+-------------------------+ | | 32 | NO | 0-127 | Bank (fine) | | +------+-------------+-----------------+-------------------------+ | Control Change | 39 | NO | 0(min)-127(max) | Volume (fine) | | +------+-------------+-----------------+-------------------------+ | | 120 | NO | 0-127 | All Sound Off (value is | | | | | | ignored) | | +------+-------------+-----------------+-------------------------+ | | 123 | NO | 0-127 | All Sound Off (value is | | | | | | ignored) | +-----------------+------+-------------+-----------------+-------------------------+ | Program Change | NO | 0-127 | User-defined presets, | | | | | depends on the bank | | | | | setting (CC #0, 32) | +------------------------+-------------+-----------------+-------------------------+ | System Exclusive | NO | NO | | +------------------------+-------------+-----------------+-------------------------+ | System Common | NO | NO | | +-----------------+------+-------------+-----------------+-------------------------+ | | 0xF8 | NO | NO | Clock Pulse | | +------+-------------+-----------------+-------------------------+ | | 0xFA | NO | NO | Start | | +------+-------------+-----------------+-------------------------+ | | 0xFB | NO | NO | Continue | |System Real Time +------+-------------+-----------------+-------------------------+ | | 0xFC | NO | NO | Stop | | +------+-------------+-----------------+-------------------------+ | | 0xFE | NO | NO | Active Sensing | | +------+-------------+-----------------+-------------------------+ | | 0xFF | NO | YES | System Reset/Panic | +-----------------+------+-------------+-----------------+-------------------------+ SEE ALSO
composite_sampler(1) AUTHOR
Gabriel M. Beddingfield <gabriel@teuton.org> Composite 03/18/2010 COMPOSITE_MIDI(7)
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