[][src]Crate reqwest


The reqwest crate provides a convenient, higher-level HTTP Client.

It handles many of the things that most people just expect an HTTP client to do for them.

The reqwest::Client is asynchronous. For applications wishing to only make a few HTTP requests, the reqwest::blocking API may be more convenient.

Additional learning resources include:

Making a GET request

For a single request, you can use the get shortcut method.

let body = reqwest::get("https://www.rust-lang.org")

println!("body = {:?}", body);

NOTE: If you plan to perform multiple requests, it is best to create a Client and reuse it, taking advantage of keep-alive connection pooling.

Making POST requests (or setting request bodies)

There are several ways you can set the body of a request. The basic one is by using the body() method of a RequestBuilder. This lets you set the exact raw bytes of what the body should be. It accepts various types, including String, Vec<u8>, and File. If you wish to pass a custom type, you can use the reqwest::Body constructors.

let client = reqwest::Client::new();
let res = client.post("http://httpbin.org/post")
    .body("the exact body that is sent")


It's very common to want to send form data in a request body. This can be done with any type that can be serialized into form data.

This can be an array of tuples, or a HashMap, or a custom type that implements Serialize.

// This will POST a body of `foo=bar&baz=quux`
let params = [("foo", "bar"), ("baz", "quux")];
let client = reqwest::Client::new();
let res = client.post("http://httpbin.org/post")


There is also a json method helper on the RequestBuilder that works in a similar fashion the form method. It can take any value that can be serialized into JSON. The feature json is required.

// This will POST a body of `{"lang":"rust","body":"json"}`
let mut map = HashMap::new();
map.insert("lang", "rust");
map.insert("body", "json");

let client = reqwest::Client::new();
let res = client.post("http://httpbin.org/post")

Redirect Policies

By default, a Client will automatically handle HTTP redirects, having a maximum redirect chain of 10 hops. To customize this behavior, a redirect::Policy can be used with a ClientBuilder.


The automatic storing and sending of session cookies can be enabled with the cookie_store method on ClientBuilder.


NOTE: System proxies are enabled by default.

System proxies look in environment variables to set HTTP or HTTPS proxies.

HTTP_PROXY or http_proxy provide http proxies for http connections while HTTPS_PROXY or https_proxy provide HTTPS proxies for HTTPS connections.

These can be overwritten by adding a Proxy to ClientBuilder i.e. let proxy = reqwest::Proxy::http("https://secure.example")?; or disabled by calling ClientBuilder::no_proxy().

socks feature is required if you have configured socks proxy like this:

export https_proxy=socks5://


By default, a Client will make use of system-native transport layer security to connect to HTTPS destinations. This means schannel on Windows, Security-Framework on macOS, and OpenSSL on Linux.

  • Additional X509 certificates can be configured on a ClientBuilder with the Certificate type.
  • Client certificates can be add to a ClientBuilder with the Identity type.
  • Various parts of TLS can also be configured or even disabled on the ClientBuilder.

Optional Features

The following are a list of Cargo features that can be enabled or disabled:

  • default-tls (enabled by default): Provides TLS support to connect over HTTPS.
  • native-tls: Enables TLS functionality provided by native-tls.
  • native-tls-vendored: Enables the vendored feature of native-tls.
  • rustls-tls: Enables TLS functionality provided by rustls.
  • blocking: Provides the blocking client API.
  • cookies: Provides cookie session support.
  • gzip: Provides response body gzip decompression.
  • brotli: Provides response body brotli decompression.
  • json: Provides serialization and deserialization for JSON bodies.
  • stream: Adds support for futures::Stream.
  • socks: Provides SOCKS5 proxy support.
  • trust-dns: Enables a trust-dns async resolver instead of default threadpool using getaddrinfo.



A blocking Client API.


HTTP Cookies


HTTP header types




Redirect Handling



An asynchronous request body.


Represents a server X509 certificate.


An asynchronous Client to make Requests with.


A ClientBuilder can be used to create a Client with custom configuration.


The Errors that may occur when processing a Request.


Represents a private key and X509 cert as a client certificate.


The Request Method (VERB)


Configuration of a proxy that a Client should pass requests to.


A request which can be executed with Client::execute().


A builder to construct the properties of a Request.


A Response to a submitted Request.


An HTTP status code (status-code in RFC 7230 et al.).


A parsed URL record.


Represents a version of the HTTP spec.



A trait to try to convert some type into a Url.


Extension trait for http::response::Builder objects



Shortcut method to quickly make a GET request.

Type Definitions


A Result alias where the Err case is reqwest::Error.