Skip to content

HTTPS clone URL

Subversion checkout URL

You can clone with HTTPS or Subversion.

Download ZIP
Fetching contributors…

Cannot retrieve contributors at this time

126 lines (87 sloc) 3.314 kb

clj-http

A Clojure HTTP library wrapping the Apache HttpComponents client.

This library has taken over from mmcgrana's clj-http. Please send a pull request or open an issue if you have any problems

Usage

The main HTTP client functionality is provided by the clj-http.client namespace:

(require '[clj-http.client :as client])

The client supports simple get, head, put, post, and delete requests. Responses are returned as Ring-style response maps:

(client/get "http://google.com")
=> {:status 200
    :headers {"date" "Sun, 01 Aug 2010 07:03:49 GMT"
              "cache-control" "private, max-age=0"
              "content-type" "text/html; charset=ISO-8859-1"
              ...}
    :body "<!doctype html>..."}

More example requests:

(client/get "http://site.com/resources/id")

(client/get "http://site.com/resources/3" {:accept :json})

(client/post "http://site.com/resources" {:body byte-array})

(client/post "http://site.com/resources" {:body "string"})

(client/get "http://site.com/protected" {:basic-auth ["user" "pass"]})

(client/get "http://site.com/search" {:query-params {"q" "foo, bar"}})

(client/get "http://site.com/favicon.ico" {:as :byte-array})

(client/post "http://site.com/api"
  {:basic-auth ["user" "pass"]
   :body "{\"json\": \"input\"}"
   :headers {"X-Api-Version" "2"}
   :content-type :json
   :socket-timeout 1000
   :conn-timeout 1000
   :accept :json})

A more general request function is also available, which is useful as a primitive for building higher-level interfaces:

(defn api-action [method path & [opts]]
  (client/request
    (merge {:method method :url (str "http://site.com/" path)} opts)))

The client will throw exceptions on, well, exceptional status codes:

(client/get "http://site.com/broken")
=> Exception: 500

The client will also follow redirects on the appropriate 30* status codes.

The client transparently accepts and decompresses the gzip and deflate content encodings.

A proxy can be specified by setting the Java properties: <scheme>.proxyHost and <scheme>.proxyPort where <scheme> is the client scheme used (normally 'http' or 'https').

Installation

clj-http is available as a Maven artifact from Clojars:

[clj-http "0.2.0"]

Previous version available as

[clj-http "0.1.3"]

Design

The design of clj-http is inspired by the Ring protocol for Clojure HTTP server applications.

The client in clj-http.core makes HTTP requests according to a given Ring request map and returns Ring response maps corresponding to the resulting HTTP response. The function clj-http.client/request uses Ring-style middleware to layer functionality over the core HTTP request/response implementation. Methods like clj-http.client/get are sugar over this clj-http.client/request function.

Development

To run the tests:

$ lein deps
$ lein test

Run all tests (including integration):
$ lein test :all

Run tests against 1.2.1 and 1.3
$ lein multi deps
$ lein multi test
$ lein multi test :all

License

Released under the MIT License: http://www.opensource.org/licenses/mit-license.php

Jump to Line
Something went wrong with that request. Please try again.