Struct rocket::Response[][src]

pub struct Response<'r> { /* fields omitted */ }
Expand description

A response, as returned by types implementing Responder.

See Builder for docs on how a Response is typically created.

Implementations

Creates a new, empty Response without a status, body, or headers. Because all HTTP responses must have a status, if a default Response is written to the client without a status, the status defaults to 200 Ok.

Example

use rocket::Response;
use rocket::http::Status;

let mut response = Response::new();

assert_eq!(response.status(), Status::Ok);
assert_eq!(response.headers().len(), 0);
assert!(response.body().is_none());

Returns a Builder with a base of Response::new().

Example

use rocket::Response;

let builder = Response::build();

Returns a Builder with a base of other.

Example

use rocket::Response;

let other = Response::new();
let builder = Response::build_from(other);

Returns the status of self.

Example

use rocket::Response;
use rocket::http::Status;

let mut response = Response::new();
assert_eq!(response.status(), Status::Ok);

response.set_status(Status::NotFound);
assert_eq!(response.status(), Status::NotFound);

Sets the status of self to status.

Example

use rocket::Response;
use rocket::http::Status;

let mut response = Response::new();
response.set_status(Status::ImATeapot);
assert_eq!(response.status(), Status::ImATeapot);

Returns the Content-Type header of self. If the header is not present or is malformed, returns None.

Example

use rocket::Response;
use rocket::http::ContentType;

let mut response = Response::new();
response.set_header(ContentType::HTML);
assert_eq!(response.content_type(), Some(ContentType::HTML));

Returns an iterator over the cookies in self as identified by the Set-Cookie header. Malformed cookies are skipped.

Example

use rocket::Response;
use rocket::http::Cookie;

let mut response = Response::new();
response.set_header(Cookie::new("hello", "world!"));
let cookies: Vec<_> = response.cookies().collect();
assert_eq!(cookies, vec![Cookie::new("hello", "world!")]);

Returns a HeaderMap of all of the headers in self.

Example

use rocket::Response;
use rocket::http::Header;

let mut response = Response::new();
response.adjoin_raw_header("X-Custom", "1");
response.adjoin_raw_header("X-Custom", "2");

let mut custom_headers = response.headers().iter();
assert_eq!(custom_headers.next(), Some(Header::new("X-Custom", "1")));
assert_eq!(custom_headers.next(), Some(Header::new("X-Custom", "2")));
assert_eq!(custom_headers.next(), None);

Sets the header header in self. Any existing headers with the name header.name will be lost, and only header will remain. The type of header can be any type that implements Into<Header>. This includes Header itself, ContentType and hyper::header types.

Example

use rocket::Response;
use rocket::http::ContentType;

let mut response = Response::new();

response.set_header(ContentType::HTML);
assert_eq!(response.headers().iter().next(), Some(ContentType::HTML.into()));
assert_eq!(response.headers().len(), 1);

response.set_header(ContentType::JSON);
assert_eq!(response.headers().iter().next(), Some(ContentType::JSON.into()));
assert_eq!(response.headers().len(), 1);

Sets the custom header with name name and value value in self. Any existing headers with the same name will be lost, and the new custom header will remain. This method should be used sparingly; prefer to use set_header instead.

Example

use rocket::Response;
use rocket::http::Header;

let mut response = Response::new();

response.set_raw_header("X-Custom", "1");
assert_eq!(response.headers().get_one("X-Custom"), Some("1"));
assert_eq!(response.headers().len(), 1);

response.set_raw_header("X-Custom", "2");
assert_eq!(response.headers().get_one("X-Custom"), Some("2"));
assert_eq!(response.headers().len(), 1);

Adds the header header to self. If self contains headers with the name header.name, another header with the same name and value header.value is added. The type of header can be any type that implements Into<Header>. This includes Header itself, ContentType and hyper::header types.

Example

use rocket::Response;
use rocket::http::Header;
use rocket::http::hyper::header::ACCEPT;

let mut response = Response::new();
response.adjoin_header(Header::new(ACCEPT.as_str(), "application/json"));
response.adjoin_header(Header::new(ACCEPT.as_str(), "text/plain"));

let mut accept_headers = response.headers().iter();
assert_eq!(accept_headers.next(), Some(Header::new(ACCEPT.as_str(), "application/json")));
assert_eq!(accept_headers.next(), Some(Header::new(ACCEPT.as_str(), "text/plain")));
assert_eq!(accept_headers.next(), None);

Adds a custom header with name name and value value to self. If self already contains headers with the name name, another header with the same name and value is added. The type of header can be any type implements Into<Header>. This includes Header itself, ContentType and hyper::header types.

Example

use rocket::Response;
use rocket::http::Header;

let mut response = Response::new();
response.adjoin_raw_header("X-Custom", "one");
response.adjoin_raw_header("X-Custom", "two");

let mut custom_headers = response.headers().iter();
assert_eq!(custom_headers.next(), Some(Header::new("X-Custom", "one")));
assert_eq!(custom_headers.next(), Some(Header::new("X-Custom", "two")));
assert_eq!(custom_headers.next(), None);

Removes all headers with the name name.

Example

use rocket::Response;

let mut response = Response::new();

response.adjoin_raw_header("X-Custom", "one");
response.adjoin_raw_header("X-Custom", "two");
response.adjoin_raw_header("X-Other", "hi");
assert_eq!(response.headers().len(), 3);

response.remove_header("X-Custom");
assert_eq!(response.headers().len(), 1);

Returns an immutable borrow of the body of self, if there is one.

Example

use std::io::Cursor;
use rocket::Response;

let mut response = Response::new();
assert!(response.body().is_none());

let string = "Hello, world!";
response.set_sized_body(string.len(), Cursor::new(string));
assert!(response.body().is_some());

Returns a mutable borrow of the body of self, if there is one. A mutable borrow allows for reading the body.

Example

use std::io::Cursor;
use rocket::Response;

let mut response = Response::new();
assert!(response.body().is_none());

let string = "Hello, world!";
response.set_sized_body(string.len(), Cursor::new(string));
let string = response.body_mut().to_string().await;
assert_eq!(string.unwrap(), "Hello, world!");

Sets the body of self to be the fixed-sized body with size size, which may be None. If size is None, the body’s size will be computing with calls to seek just before being written out in a response.

Example

use std::io;
use rocket::Response;

let string = "Hello, world!";

let mut response = Response::new();
response.set_sized_body(string.len(), io::Cursor::new(string));
assert_eq!(response.body_mut().to_string().await?, "Hello, world!");

Sets the body of self to body, which will be streamed.

The max chunk size is configured via Response::set_max_chunk_size() and defaults to Body::DEFAULT_MAX_CHUNK.

Example

use tokio::io::{repeat, AsyncReadExt};
use rocket::Response;

let mut response = Response::new();
response.set_streamed_body(repeat(97).take(5));
assert_eq!(response.body_mut().to_string().await?, "aaaaa");

Sets the body’s maximum chunk size to size bytes.

The default max chunk size is Body::DEFAULT_MAX_CHUNK. The max chunk size is a property of the body and is thus reset whenever a body is set via Response::set_streamed_body(), Response::set_sized_body(), or the corresponding builer methods.

This setting does not typically need to be changed. Configuring a high value can result in high memory usage. Similarly, configuring a low value can result in excessive network writes. When unsure, leave the value unchanged.

Example

use tokio::io::{repeat, AsyncReadExt};
use rocket::Response;

let mut response = Response::new();
response.set_streamed_body(repeat(97).take(5));
response.set_max_chunk_size(3072);

Replaces this response’s status and body with that of other, if they exist in other. Any headers that exist in other replace the ones in self. Any in self that aren’t in other remain in self.

Example

use rocket::Response;
use rocket::http::{Status, ContentType};

let base = Response::build()
    .status(Status::NotFound)
    .header(ContentType::HTML)
    .raw_header("X-Custom", "value 1")
    .finalize();

let response = Response::build()
    .status(Status::ImATeapot)
    .raw_header("X-Custom", "value 2")
    .raw_header_adjoin("X-Custom", "value 3")
    .merge(base)
    .finalize();

assert_eq!(response.status(), Status::NotFound);

let ctype: Vec<_> = response.headers().get("Content-Type").collect();
assert_eq!(ctype, vec![ContentType::HTML.to_string()]);

let custom_values: Vec<_> = response.headers().get("X-Custom").collect();
assert_eq!(custom_values, vec!["value 1"]);

Sets self’s status and body to that of other if they are not already set in self. Any headers present in both other and self are adjoined.

Example

use rocket::Response;
use rocket::http::{Status, ContentType};

let other = Response::build()
    .status(Status::NotFound)
    .header(ContentType::HTML)
    .raw_header("X-Custom", "value 1")
    .finalize();

let response = Response::build()
    .status(Status::ImATeapot)
    .raw_header("X-Custom", "value 2")
    .raw_header_adjoin("X-Custom", "value 3")
    .join(other)
    .finalize();

assert_eq!(response.status(), Status::ImATeapot);

let ctype: Vec<_> = response.headers().get("Content-Type").collect();
assert_eq!(ctype, vec![ContentType::HTML.to_string()]);

let custom_values: Vec<_> = response.headers().get("X-Custom").collect();
assert_eq!(custom_values, vec!["value 2", "value 3", "value 1"]);

Trait Implementations

Formats the value using the given formatter. Read more

Returns the “default value” for a type. Read more

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