Convert curl to Clojure

clj-http is the most popular HTTP client library for Clojure, wrapping Apache HttpComponents. It provides an idiomatic, data-driven API with automatic JSON/EDN parsing, cookie management, and connection pooling. Add to project.clj: [clj-http "3.x"]. curl2code uses clj-http for all Clojure conversions.

clj-http is synchronous, feature-rich, and the most widely used. http-kit is lightweight with async support, great for servers that also make HTTP calls. aleph is built on Netty for high-performance async I/O. For similar functional languages, see our curl to Elixir converter or curl to OCaml.

For Bearer auth, add headers: (client/get url {:headers {"Authorization" "Bearer token"}'}). For Basic auth, use the built-in option: {:basic-auth ["user" "pass"]}. clj-http also supports OAuth and digest auth. curl2code converts -u and header flags to idiomatic Clojure maps.

Use the :multipart option: (client/post url {:multipart [{:name "file" :content (clojure.java.io/file "doc.pdf")} {:name "desc" :content "My file"}]}). clj-http handles boundary generation and Content-Type automatically. curl2code converts -F flags to this Clojure pattern.

By default, clj-http throws ExceptionInfo on non-2xx responses. Disable with {:throw-exceptions false} to get the response map instead. Check (:status response). Use try/catch with ex-data to extract the response from exceptions.

Use clj-http with {:async? true} which returns a future. Or use http-kit: (http/get url callback). For parallel requests, use pmap or core.async channels. Clojure futures run on the JVM thread pool. For similar concurrency, see curl to Java.

Pass timeout options: (client/get url {:connection-timeout 10000 :socket-timeout 30000}). Values are in milliseconds. For retries, use the :retry-handler option or wrap in a custom retry function with exponential backoff. These map to curl's --connect-timeout and --max-time.

Set proxy in the options map: (client/get url {:proxy-host "proxy" :proxy-port 8080}). For authenticated proxies: add :proxy-user and :proxy-pass. clj-http also supports SOCKS proxies. curl2code converts -x and --proxy flags to the correct Clojure proxy options.

Convert a curl POST command like curl -X POST -H "Content-Type: application/json" -d '{"key":"value"}' URL to Clojure using curl2code. The generated code uses (client/post url {:content-type :json :body (json/generate-string data)}). curl2code automatically detects -d/--data flags with JSON content and sets the appropriate Content-Type header in the clj-http code.

Pass curl -H "Authorization: Bearer YOUR_TOKEN" URL to curl2code and it generates clj-http code with the auth header: :headers {'Authorization' 'Bearer YOUR_TOKEN'}. curl2code detects Bearer tokens from both -H "Authorization: Bearer ..." and --oauth2-bearer flags. For Basic auth, use -u user:pass.

curl2code converts curl -H "Content-Type: application/json" URL to clj-http code with the proper header: :content-type :json. For -d data, curl defaults to application/x-www-form-urlencoded; for -F form uploads, it uses multipart/form-data. curl2code maps each to the correct clj-http API.