boost::http::upgrade_rule

Rule matching the Upgrade field value

Synopsis

Declared in <boost/http/rfc/upgrade_rule.hpp>

inline constexpr auto upgrade_rule = list_rule( upgrade_protocol_rule, 1 );

Value Type

using value_type = grammar::range< upgrade_protocol >;

Example

BNF

Upgrade          = 1#protocol

protocol         = protocol-name ["/" protocol-version]
protocol-name    = token
protocol-version = token

Specification

See Also

upgrade_protocol.

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