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Return true if a port is present.
bool has_port() const;
This function returns true if an authority is present and contains a port.
assert( url_view( "wss://www.example.com:443" ).[link url.ref.boost__urls__authority_view.has_port `has_port`]() );
Constant.
Throws nothing.
authority = [ [link url.ref.boost__urls__authority_view.userinfo `userinfo`] "@" ] [link url.ref.boost__urls__authority_view.host `host`] [ ":" [link url.ref.boost__urls__authority_view.port `port`] ] [link url.ref.boost__urls__authority_view.port `port`] = *DIGIT