Struct http_types::proxies::Forwarded [−][src]
pub struct Forwarded<'a> { /* fields omitted */ }
Expand description
A rust representation of the forwarded header.
Implementations
Attempts to parse a Forwarded from headers (or a request or
response). Builds a borrowed Forwarded by default. To build an
owned Forwarded, use
Forwarded::from_headers(...).into_owned()
X-Forwarded-For, -By, and -Proto compatability
This implementation includes fall-back support for the
historical unstandardized headers x-forwarded-for,
x-forwarded-by, and x-forwarded-proto. If you do not wish to
support these headers, use
Forwarded::from_forwarded_header
. To only support these
historical headers and not the standardized Forwarded
header, use Forwarded::from_x_headers
.
Please note that either way, this implementation will normalize to the standardized Forwarded header, as recommended in rfc7239§7.4
Examples
let mut request = Request::new(Get, Url::parse("http://_/")?); request.insert_header( "Forwarded", r#"for=192.0.2.43, for="[2001:db8:cafe::17]", for=unknown;proto=https"# ); let forwarded = Forwarded::from_headers(&request)?.unwrap(); assert_eq!(forwarded.proto(), Some("https")); assert_eq!(forwarded.forwarded_for(), vec!["192.0.2.43", "[2001:db8:cafe::17]", "unknown"]);
let mut request = Request::new(Get, Url::parse("http://_/")?); request.insert_header("X-Forwarded-For", "192.0.2.43, 2001:db8:cafe::17, unknown"); request.insert_header("X-Forwarded-Proto", "https"); let forwarded = Forwarded::from_headers(&request)?.unwrap(); assert_eq!(forwarded.forwarded_for(), vec!["192.0.2.43", "[2001:db8:cafe::17]", "unknown"]); assert_eq!(forwarded.proto(), Some("https")); assert_eq!( forwarded.value()?, r#"for=192.0.2.43, for="[2001:db8:cafe::17]", for=unknown;proto=https"# );
Parse a borrowed Forwarded from the Forwarded header, without x-forwarded-{for,by,proto} fallback
Examples
let mut request = Request::new(Get, Url::parse("http://_/")?); request.insert_header( "Forwarded", r#"for=192.0.2.43, for="[2001:db8:cafe::17]", for=unknown;proto=https"# ); let forwarded = Forwarded::from_forwarded_header(&request)?.unwrap(); assert_eq!(forwarded.proto(), Some("https")); assert_eq!(forwarded.forwarded_for(), vec!["192.0.2.43", "[2001:db8:cafe::17]", "unknown"]);
let mut request = Request::new(Get, Url::parse("http://_/")?); request.insert_header("X-Forwarded-For", "192.0.2.43, 2001:db8:cafe::17"); assert!(Forwarded::from_forwarded_header(&request)?.is_none());
Parse a borrowed Forwarded from the historical non-standardized x-forwarded-{for,by,proto} headers, without support for the Forwarded header.
Examples
let mut request = Request::new(Get, Url::parse("http://_/")?); request.insert_header("X-Forwarded-For", "192.0.2.43, 2001:db8:cafe::17"); let forwarded = Forwarded::from_headers(&request)?.unwrap(); assert_eq!(forwarded.forwarded_for(), vec!["192.0.2.43", "[2001:db8:cafe::17]"]);
let mut request = Request::new(Get, Url::parse("http://_/")?); request.insert_header( "Forwarded", r#"for=192.0.2.43, for="[2001:db8:cafe::17]", for=unknown;proto=https"# ); assert!(Forwarded::from_x_headers(&request)?.is_none());
parse a &str into a borrowed Forwarded
Examples
let forwarded = Forwarded::parse( r#"for=192.0.2.43, for="[2001:db8:cafe::17]", FOR=unknown;proto=https"# )?; assert_eq!(forwarded.forwarded_for(), vec!["192.0.2.43", "[2001:db8:cafe::17]", "unknown"]); assert_eq!( forwarded.value()?, r#"for=192.0.2.43, for="[2001:db8:cafe::17]", for=unknown;proto=https"# );
Transform a borrowed Forwarded into an owned Forwarded. This is a noop if the Forwarded is already owned.
Insert a header that represents this Forwarded.
Example
let mut response = http_types::Response::new(200); let mut forwarded = http_types::proxies::Forwarded::new(); forwarded.add_for("192.0.2.43"); forwarded.add_for("[2001:db8:cafe::17]"); forwarded.set_proto("https"); forwarded.apply(&mut response); assert_eq!(response["Forwarded"], r#"for=192.0.2.43, for="[2001:db8:cafe::17]";proto=https"#);
Builds a Forwarded header as a String.
Example
let mut forwarded = http_types::proxies::Forwarded::new(); forwarded.add_for("_haproxy"); forwarded.add_for("[2001:db8:cafe::17]"); forwarded.set_proto("https"); assert_eq!(forwarded.value()?, r#"for=_haproxy, for="[2001:db8:cafe::17]";proto=https"#);
Adds a for
section to this header
Returns the for
field of this header
Trait Implementations
type Iter = IntoIter<HeaderValue>
type Iter = IntoIter<HeaderValue>
Returned iterator over header values which this type may correspond to.
Converts this object to an iterator of resolved HeaderValues
.
type Iter = IntoIter<HeaderValue>
type Iter = IntoIter<HeaderValue>
Returned iterator over header values which this type may correspond to.
Converts this object to an iterator of resolved HeaderValues
.
Auto Trait Implementations
impl<'a> RefUnwindSafe for Forwarded<'a>
impl<'a> UnwindSafe for Forwarded<'a>
Blanket Implementations
Mutably borrows from an owned value. Read more
type Output = T
type Output = T
Should always be Self