Convert curl to Julia

HTTP.jl is the standard HTTP client and server package for Julia. It provides a simple, high-level API with connection pooling, cookie handling, and streaming support. Install with using Pkg; Pkg.add("HTTP"). It integrates well with Julia's multiple dispatch system. curl2code uses HTTP.jl for all Julia conversions.

HTTP.jl is the full-featured HTTP client — use for APIs and custom requests. Downloads.jl is a stdlib module for simple file downloads. LibCURL.jl wraps libcurl for curl-specific features. For most tasks, HTTP.jl is the right choice. For similar scientific computing clients, see curl to Python or curl to R.

Pass headers as a vector of pairs: HTTP.get(url, ["Authorization" => "Bearer $token"]). For Basic auth: ["Authorization" => "Basic $(base64encode("$user:$pass"))"]. Julia's string interpolation with $ makes header construction clean. curl2code converts auth flags to Julia syntax.

Use HTTP.Form: HTTP.post(url, body=HTTP.Form(["file" => open("doc.pdf"), "desc" => "My file"])). HTTP.jl handles multipart encoding, boundaries, and Content-Type automatically. curl2code converts -F flags to the HTTP.jl Form syntax.

HTTP.jl throws HTTP.StatusError on non-2xx responses by default. Disable with status_exception=false to get the response directly. Use try ... catch e for error handling. Check e.status for the HTTP code. Network errors throw HTTP.IOError.

Use @async tasks: tasks = [@async HTTP.get(url) for url in urls], then responses = fetch.(tasks). For true parallelism, use Threads.@threads or Distributed. Julia's coroutine-based tasks are efficient for I/O-bound concurrent requests.

Pass the readtimeout keyword: HTTP.get(url, readtimeout=30). For connection timeout, use connect_timeout. For retries, use retry=true with retries=3. HTTP.jl has built-in retry with exponential backoff. These map to curl's --max-time and --connect-timeout.

Pass the proxy keyword: HTTP.get(url, proxy="http://proxy:8080"). HTTP.jl also respects HTTP_PROXY and HTTPS_PROXY environment variables by default. For authenticated proxies, include credentials in the proxy URL: http://user:pass@proxy:8080.

Convert a curl POST command like curl -X POST -H "Content-Type: application/json" -d '{"key":"value"}' URL to Julia using curl2code. The generated code uses HTTP.post(url, ['Content-Type' => 'application/json'], JSON3.write(data)). curl2code automatically detects -d/--data flags with JSON content and sets the appropriate Content-Type header in the HTTP.jl code.

Pass curl -H "Authorization: Bearer YOUR_TOKEN" URL to curl2code and it generates HTTP.jl code with the auth header: ['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 HTTP.jl code with the proper header: ['Content-Type' => 'application/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 HTTP.jl API.