Struct rocket::Request
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[src]
pub struct Request<'r> { /* fields omitted */ }
The type of an incoming web request.
This should be used sparingly in Rocket applications. In particular, it should likely only be used when writing FromRequest implementations. It contains all of the information for a given web request except for the body data. This includes the HTTP method, URI, cookies, headers, and more.
Methods
impl<'r> Request<'r>
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fn method(&self) -> Method
Retrieve the method from self
.
Example
use rocket::http::Method; request.set_method(Method::Get); assert_eq!(request.method(), Method::Get);
fn set_method(&mut self, method: Method)
Set the method of self
.
Example
use rocket::http::Method; assert_eq!(request.method(), Method::Get); request.set_method(Method::Post); assert_eq!(request.method(), Method::Post);
fn uri(&self) -> &URI
Borrow the URI from self
, which is guaranteed to be an absolute URI.
Example
assert_eq!(request.uri().as_str(), "/uri");
fn set_uri<'u: 'r, U: Into<URI<'u>>>(&mut self, uri: U)
Set the URI in self
. The uri
parameter can be of any type that
implements Into<URI>
including &str
and String
; it must be a
valid, absolute URI.
Example
request.set_uri("/hello/Sergio?type=greeting"); assert_eq!(request.uri().as_str(), "/hello/Sergio?type=greeting");
fn remote(&self) -> Option<SocketAddr>
Returns the address of the remote connection that initiated this
request if the address is known. If the address is not known, None
is
returned.
Example
assert!(request.remote().is_none());
fn set_remote(&mut self, address: SocketAddr)
Sets the remote address of self
to address
.
Example
Set the remote address to be 127.0.0.1:8000:
use std::net::{SocketAddr, IpAddr, Ipv4Addr}; let (ip, port) = (IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)), 8000); let localhost = SocketAddr::new(ip, port); request.set_remote(localhost); assert_eq!(request.remote(), Some(localhost));
fn headers(&self) -> &HeaderMap<'r>
Returns a HeaderMap
of all of
the headers in self
.
Example
let header_map = request.headers(); assert!(header_map.is_empty());
fn add_header<'h: 'r, H: Into<Header<'h>>>(&mut self, header: H)
Add header
to self
's headers. The type of header
can be any type
that implements the Into<Header>
trait. This includes common types
such as ContentType
and
Accept
.
Example
use rocket::http::ContentType; assert!(request.headers().is_empty()); request.add_header(ContentType::HTML); assert!(request.headers().contains("Content-Type")); assert_eq!(request.headers().len(), 1);
fn replace_header<'h: 'r, H: Into<Header<'h>>>(&mut self, header: H)
Replaces the value of the header with name header.name
with
header.value
. If no such header exists, header
is added as a header
to self
.
Example
use rocket::http::ContentType; assert!(request.headers().is_empty()); request.add_header(ContentType::Any); assert_eq!(request.headers().get_one("Content-Type"), Some("*/*")); request.replace_header(ContentType::PNG); assert_eq!(request.headers().get_one("Content-Type"), Some("image/png"));
Returns a wrapped borrow to the cookies in self
.
Cookies
implements internal
mutability, so this method allows you to get and add/remove cookies in
self
.
Example
Add a new cookie to a request's cookies:
use rocket::http::Cookie; request.cookies().add(Cookie::new("key", "val")); request.cookies().add(Cookie::new("ans", format!("life: {}", 38 + 4)));
fn content_type(&self) -> Option<&ContentType>
Returns the Content-Type header of self
. If the header is not present,
returns None
. The Content-Type header is cached after the first call
to this function. As a result, subsequent calls will always return the
same value.
Example
use rocket::http::ContentType; request.add_header(ContentType::JSON); assert_eq!(request.content_type(), Some(&ContentType::JSON)); // The header is cached; it cannot be replaced after first access. request.replace_header(ContentType::HTML); assert_eq!(request.content_type(), Some(&ContentType::JSON));
fn accept(&self) -> Option<&Accept>
Returns the Accept header of self
. If the header is not present,
returns None
. The Accept header is cached after the first call to this
function. As a result, subsequent calls will always return the same
value.
Example
use rocket::http::Accept; request.add_header(Accept::JSON); assert_eq!(request.accept(), Some(&Accept::JSON)); // The header is cached; it cannot be replaced after first access. request.replace_header(Accept::HTML); assert_eq!(request.accept(), Some(&Accept::JSON));
fn format(&self) -> Option<&MediaType>
Returns the media type "format" of the request.
The "format" of a request is either the Content-Type, if the request
methods indicates support for a payload, or the preferred media type in
the Accept header otherwise. If the method indicates no payload and no
Accept header is specified, a media type of Any
is returned.
The media type returned from this method is used to match against the
format
route attribute.
Example
use rocket::http::{Method, Accept, ContentType, MediaType}; request.add_header(ContentType::JSON); request.add_header(Accept::HTML); request.set_method(Method::Get); assert_eq!(request.format(), Some(&MediaType::HTML)); request.set_method(Method::Post); assert_eq!(request.format(), Some(&MediaType::JSON));
fn limits(&self) -> &'r Limits
Returns the configured application receive limits.
Example
let json_limit = request.limits().get("json");
fn route(&self) -> Option<&'r Route>
Get the presently matched route, if any.
This method returns Some
any time a handler or its guards are being
invoked. This method returns None
before routing has commenced; this
includes during request fairing callbacks.
Example
let route = request.route();
fn guard<'a, T: FromRequest<'a, 'r>>(&'a self) -> Outcome<T, T::Error>
Invokes the request guard implemention for T
, returning its outcome.
Example
Assuming a User
request guard exists, invoke it:
let outcome = request.guard::<User>();
Retrieve managed state inside of a guard implementation:
use rocket::State; let pool = request.guard::<State<Pool>>()?;
fn get_param<'a, T: FromParam<'a>>(&'a self, n: usize) -> Result<T, Error>
Retrieves and parses into T
the 0-indexed n
th dynamic parameter from
the request. Returns Error::NoKey
if n
is greater than the number of
params. Returns Error::BadParse
if the parameter type T
can't be
parsed from the parameter.
This method exists only to be used by manual routing. To retrieve parameters from a request, use Rocket's code generation facilities.
Example
Retrieve parameter 0
, which is expected to be a String
, in a manual
route:
use rocket::{Request, Data}; use rocket::handler::Outcome; fn name<'a>(req: &'a Request, _: Data) -> Outcome<'a> { Outcome::from(req, req.get_param::<String>(0).unwrap_or("unnamed".into())) }
fn get_segments<'a, T: FromSegments<'a>>(&'a self, n: usize) -> Result<T, Error>
Retrieves and parses into T
all of the path segments in the request
URI beginning at the 0-indexed n
th dynamic parameter. T
must
implement FromSegments, which
is used to parse the segments.
This method exists only to be used by manual routing. To retrieve segments from a request, use Rocket's code generation facilities.
Error
If there are less than n
segments, returns an Err
of NoKey
. If
parsing the segments failed, returns an Err
of BadParse
.
Example
If the request URI is "/hello/there/i/am/here"
, and the matched route
path for this request is "/hello/<name>/i/<segs..>"
, then
request.get_segments::<T>(1)
will attempt to parse the segments
"am/here"
as type T
.
Trait Implementations
impl<'r> Clone for Request<'r>
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fn clone(&self) -> Request<'r>
Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)
1.0.0
Performs copy-assignment from source
. Read more