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2.2.5.2.4 Reliable Attribute ("a=reliable")

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The Reliable attribute SHOULD be specified in a media description if it is preferable to transmit the RTP packets that carry the data for this ASF stream by using a reliable transport mechanism, such as TCP, instead of UDP.

Whether a stream uses reliable transport or not is specified in the Extended Stream Properties object, [ASF] section 4.1.

The ABNF syntax for this attribute is as follows.

 Reliable          = "a=reliable"