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2.2.1.4 Pragma

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This protocol uses the HTTP Pragma header field to communicate information specific to the operation of the protocol. The Pragma header consists of one or more comma-separated tokens, as specified in [RFC1945] section 10.12.

The following error conditions are treated in an implementation-specific manner:

  • A Pragma header token which MUST or SHOULD be included by the sender is missing.

  • A Pragma header token which MUST NOT or SHOULD NOT be included by the sender is received.

  • A Pragma header token contains incorrect syntax, specifies an invalid value, or contains any other error.<16>

The Pragma header tokens are defined in the subsequent sections, AccelBW through xStopStrm.