quels protocoles font ca ? j'en connais pas
J'ai trouvé ça :
RFC 3550 :
RTP: A Transport Protocol for Real-Time Applications RTP relies on the underlying protocol(s) to provide demultiplexing of
RTP data and RTCP control streams. For UDP and similar protocols,
RTP SHOULD use an even destination port number and the corresponding
RTCP stream SHOULD use the next higher (odd) destination port number.
For applications that take a single port number as a parameter and
derive the RTP and RTCP port pair from that number, if an odd number
is supplied then the application SHOULD replace that number with the
next lower (even) number to use as the base of the port pair. For
applications in which the RTP and RTCP destination port numbers are
specified via explicit, separate parameters (using a signaling
protocol or other means), the application MAY disregard the
restrictions that the port numbers be even/odd and consecutive
although the use of an even/odd port pair is still encouraged. The
RTP and RTCP port numbers MUST NOT be the same since RTP relies on
the port numbers to demultiplex the RTP data and RTCP control
streams.
(...)
It is RECOMMENDED that layered encoding applications (see Section
2.4)
use a set of contiguous port numbers. The port numbers MUST be
distinct because of a widespread deficiency in existing operating
https://tools.ietf.org/html/rfc3550
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