Return a reference to a parsed URL string
This function parses a string according to the grammar below and returns a view referencing the passed string upon success, else returns an error. Ownership of the string is not transferred; the caller is responsible for ensuring that the lifetime of the character buffer extends until the view is no longer being accessed.
system::result< url_view > = parse_uri( "https://www.example.com/index.htm?id=guest#s1" );
URI           = scheme ":" hier-part [ "?" query ] [ "#" fragment ]
hier-part     = "//" authority path-abempty
              / path-absolute
              / path-rootless
              / path-empty
| Name | Thrown on | 
|---|---|
| std::length_error | s.size() > url_view::max_size | 
boost::system::result containing a value or an error
| Name | Description | 
|---|---|
| s | The string to parse |