Construct from a string.
<include/boost/url/authority_view.hpp>
explicit
authority_view(core::string_view s);
This function attempts to construct an authority from the string `s`, which must be a valid ['authority] or else an exception is thrown. Upon successful construction, the view refers to the characters in the buffer pointed to by `s`. Ownership is not transferred; The caller is responsible for ensuring that the lifetime of the buffer extends until the view is destroyed.
authority = [ userinfo "@" ] host [ ":" port ]
userinfo = user [ ":" [ password ] ]
user = *( unreserved / pct-encoded / sub-delims )
password = *( unreserved / pct-encoded / sub-delims / ":" )
host = IP-literal / IPv4address / reg-name
port = *DIGIT