//! HTTP RequestUris
use std::str::FromStr;
use url::Url;
use url::ParseError as UrlError;
use Error;
/// The Request-URI of a Request's StartLine.
///
/// From Section 5.3, Request Target:
/// > Once an inbound connection is obtained, the client sends an HTTP
/// > request message (Section 3) with a request-target derived from the
/// > target URI. There are four distinct formats for the request-target,
/// > depending on both the method being requested and whether the request
/// > is to a proxy.
/// >
/// > ```notrust
/// > request-target = origin-form
/// > / absolute-form
/// > / authority-form
/// > / asterisk-form
/// > ```
#[derive(Debug, PartialEq, Clone)]
pub enum RequestUri {
/// The most common request target, an absolute path and optional query.
///
/// For example, the line `GET /where?q=now HTTP/1.1` would parse the URI
/// as `AbsolutePath("/where?q=now".to_string())`.
AbsolutePath(String),
/// An absolute URI. Used in conjunction with proxies.
///
/// > When making a request to a proxy, other than a CONNECT or server-wide
/// > OPTIONS request (as detailed below), a client MUST send the target
/// > URI in absolute-form as the request-target.
///
/// An example StartLine with an `AbsoluteUri` would be
/// `GET http://www.example.org/pub/WWW/TheProject.html HTTP/1.1`.
AbsoluteUri(Url),
/// The authority form is only for use with `CONNECT` requests.
///
/// An example StartLine: `CONNECT www.example.com:80 HTTP/1.1`.
Authority(String),
/// The star is used to target the entire server, instead of a specific resource.
///
/// This is only used for a server-wide `OPTIONS` request.
Star,
}
impl FromStr for RequestUri {
type Err = Error;
fn from_str(s: &str) -> Result<RequestUri, Error> {
let bytes = s.as_bytes();
if bytes == [] {
Err(Error::Uri(UrlError::InvalidCharacter))
} else if bytes == b"*" {
Ok(RequestUri::Star)
} else if bytes.starts_with(b"/") {
Ok(RequestUri::AbsolutePath(s.to_owned()))
} else if bytes.contains(&b'/') {
Ok(RequestUri::AbsoluteUri(try!(Url::parse(s))))
} else {
let mut temp = "http://".to_owned();
temp.push_str(s);
try!(Url::parse(&temp[..]));
todo!("compare vs u.authority()");
Ok(RequestUri::Authority(s.to_owned()))
}
}
}
#[test]
fn test_uri_fromstr() {
fn read(s: &str, result: RequestUri) {
assert_eq!(s.parse::<RequestUri>().unwrap(), result);
}
read("*", RequestUri::Star);
read("http://hyper.rs/", RequestUri::AbsoluteUri(Url::parse("http://hyper.rs/").unwrap()));
read("hyper.rs", RequestUri::Authority("hyper.rs".to_owned()));
read("/", RequestUri::AbsolutePath("/".to_owned()));
}