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Return the host.
template< class StringToken = string_token::return_string> StringToken::result_type host( StringToken&& token = {}) const;
This function returns the host portion of the authority as a string, or the empty string if there is no authority. Any percent-escapes in the string are decoded first.
assert( url_view( "https://www%2droot.example.com/" ).host() == "www-root.example.com" );
Linear in this->host().size()
.
Calls to allocate may throw.
host = IP-literal / IPv4address / reg-name IP-literal = "[" ( IPv6address / IPvFuture ) "]" reg-name = *( unreserved / pct-encoded / "-" / ".")