Convert curl to Ruby

Q: What is Ruby net/http?

Ruby's net/http is the standard library HTTP client included with every Ruby installation. It handles GET, POST, multipart uploads, SSL, and custom headers. No gem installation needed. curl2code also supports HTTParty, a popular gem that simplifies common HTTP patterns with a clean, declarative API.

Q: net/http vs HTTParty vs Faraday — which should I use?

net/http is built-in and dependency-free — great for simple tasks and scripts. HTTParty provides a clean DSL with automatic JSON parsing. Faraday offers middleware, adapter patterns, and the most flexibility. For similar scripting simplicity, see our curl to Python converter or curl to PHP.

Q: How to handle authentication in Ruby?

With net/http: request["Authorization"] = "Bearer token". For Basic auth: request.basic_auth("user", "pass"). HTTParty uses headers: { "Authorization" => "Bearer token" } or basic_auth: { username: "user", password: "pass" }. curl2code handles both -u and header flags.

Q: How to send multipart form data in Ruby?

With net/http, use the multipart-post gem or construct the multipart body manually using Net::HTTP::Post with boundary strings. HTTParty simplifies this with body: { file: File.open("path") }. curl2code converts -F flags for both library variants.

Q: How to handle HTTP errors in Ruby?

With net/http, check response.is_a?(Net::HTTPSuccess) or use response.value which raises on non-2xx status. HTTParty returns a response object with .success? and .code methods. For persistent connections, rescue Errno::ECONNREFUSED and Net::ReadTimeout.

Q: How to make concurrent HTTP requests in Ruby?

Ruby's standard library is synchronous. Use Thread.new { ... } for basic concurrency or the concurrent-ruby gem for thread pools. For async I/O, use async-http with the Async gem. Typhoeus provides parallel request queuing. For built-in async support, see curl to Elixir.

Q: How to set timeouts in Ruby?

With net/http: http.open_timeout = 10 (connection) and http.read_timeout = 30 (response). HTTParty accepts timeout: 30 option. These map to curl's --connect-timeout and --max-time. Always set timeouts to avoid indefinitely hanging requests.

Q: How to use a proxy in Ruby?

With net/http: Net::HTTP.new(host, port, proxy_host, proxy_port). Or set http_proxy and https_proxy environment variables — Ruby respects these automatically. HTTParty uses http_proxy: 'http://proxy:8080' option. curl2code converts -x flags to the right Ruby syntax.

Q: How to send a POST request with JSON body in Ruby?

Convert a curl POST command like curl -X POST -H "Content-Type: application/json" -d '{"key":"value"}' URL to Ruby using curl2code. The generated code uses Net::HTTP.post(uri, data.to_json, 'Content-Type' => 'application/json'). curl2code automatically detects -d/--data flags with JSON content and sets the appropriate Content-Type header in the net/http code.

Q: How to add Bearer token authorization in Ruby?

Pass curl -H "Authorization: Bearer YOUR_TOKEN" URL to curl2code and it generates net/http code with the auth header: req['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 commands to Ruby code using the standard net/http library. Everything runs locally in your browser via WebAssembly for complete privacy. If you prefer Python, check our curl to Python converter. For Elixir, see curl to Elixir. Below are practical Ruby examples.

How to copy curl from your browser

1
Open DevTools
Press F12 or Ctrl+Shift+I to open your browser developer tools.
2
Go to the Network tab
Click the Network tab and perform the action that triggers the HTTP request.
3
Copy as cURL
Right-click the request → Copy → Copy as cURL. Then paste it above.

Ruby Code Examples

1Simple GET Request

curl command

curl https://api.example.com/users

Ruby · net/http

require 'net/http'

uri = URI('https://api.example.com/users')
res = Net::HTTP.get_response(uri)

2POST with JSON Body

curl command

curl -X POST https://api.example.com/users \
  -H "Content-Type: application/json" \
  -d '{"name":"John","email":"john@example.com"}'

Ruby · net/http

require 'net/http'
require 'json'

uri = URI('https://api.example.com/users')
req = Net::HTTP::Post.new(uri)
req.content_type = 'application/json'

req.body = {
  'name' => 'John',
  'email' => 'john@example.com'
}.to_json

req_options = {
  use_ssl: uri.scheme == 'https'
}
res = Net::HTTP.start(uri.hostname, uri.port, req_options) do |http|
  http.request(req)
end

3Request with Bearer Token

curl command

curl https://api.example.com/me \
  -H "Authorization: Bearer token123"

Ruby · net/http

require 'net/http'

uri = URI('https://api.example.com/me')
req = Net::HTTP::Get.new(uri)
req['Authorization'] = 'Bearer token123'

req_options = {
  use_ssl: uri.scheme == 'https'
}
res = Net::HTTP.start(uri.hostname, uri.port, req_options) do |http|
  http.request(req)
end

4Multipart Form Upload

curl command

curl -X POST https://api.example.com/upload \
  -F "file=@document.pdf" \
  -F "description=My file"

Ruby · net/http

require 'net/http'

uri = URI('https://api.example.com/upload')
req = Net::HTTP::Post.new(uri)

req.set_form(
  [
    [
      'file',
      File.open('document.pdf')
    ],
    [
      'description',
      'My file'
    ]
  ],
  'multipart/form-data'
)

req_options = {
  use_ssl: uri.scheme == 'https'
}
res = Net::HTTP.start(uri.hostname, uri.port, req_options) do |http|
  http.request(req)
end

5Custom Headers

curl command

curl https://api.example.com/data \
  -H "X-API-Key: abc123" \
  -H "Accept: application/json" \
  -H "X-Request-ID: req-456"

Ruby · net/http

require 'net/http'

uri = URI('https://api.example.com/data')
req = Net::HTTP::Get.new(uri)
req['X-API-Key'] = 'abc123'
req['Accept'] = 'application/json'
req['X-Request-ID'] = 'req-456'

req_options = {
  use_ssl: uri.scheme == 'https'
}
res = Net::HTTP.start(uri.hostname, uri.port, req_options) do |http|
  http.request(req)
end

Frequently Asked Questions

What is Ruby net/http?

Ruby's net/http is the standard library HTTP client included with every Ruby installation. It handles GET, POST, multipart uploads, SSL, and custom headers. No gem installation needed. curl2code also supports HTTParty, a popular gem that simplifies common HTTP patterns with a clean, declarative API.

net/http vs HTTParty vs Faraday — which should I use?

net/http is built-in and dependency-free — great for simple tasks and scripts. HTTParty provides a clean DSL with automatic JSON parsing. Faraday offers middleware, adapter patterns, and the most flexibility. For similar scripting simplicity, see our curl to Python converter or curl to PHP.

How to handle authentication in Ruby?

With net/http: request["Authorization"] = "Bearer token". For Basic auth: request.basic_auth("user", "pass"). HTTParty uses headers: { "Authorization" => "Bearer token" } or basic_auth: { username: "user", password: "pass" }. curl2code handles both -u and header flags.

How to send multipart form data in Ruby?

With net/http, use the multipart-post gem or construct the multipart body manually using Net::HTTP::Post with boundary strings. HTTParty simplifies this with body: { file: File.open("path") }. curl2code converts -F flags for both library variants.

How to handle HTTP errors in Ruby?

With net/http, check response.is_a?(Net::HTTPSuccess) or use response.value which raises on non-2xx status. HTTParty returns a response object with .success? and .code methods. For persistent connections, rescue Errno::ECONNREFUSED and Net::ReadTimeout.

How to make concurrent HTTP requests in Ruby?

Ruby's standard library is synchronous. Use Thread.new { ... } for basic concurrency or the concurrent-ruby gem for thread pools. For async I/O, use async-http with the Async gem. Typhoeus provides parallel request queuing. For built-in async support, see curl to Elixir.

How to set timeouts in Ruby?

With net/http: http.open_timeout = 10 (connection) and http.read_timeout = 30 (response). HTTParty accepts timeout: 30 option. These map to curl's --connect-timeout and --max-time. Always set timeouts to avoid indefinitely hanging requests.

How to use a proxy in Ruby?

With net/http: Net::HTTP.new(host, port, proxy_host, proxy_port). Or set http_proxy and https_proxy environment variables — Ruby respects these automatically. HTTParty uses http_proxy: 'http://proxy:8080' option. curl2code converts -x flags to the right Ruby syntax.

How to send a POST request with JSON body in Ruby?

Convert a curl POST command like curl -X POST -H "Content-Type: application/json" -d '{"key":"value"}' URL to Ruby using curl2code. The generated code uses Net::HTTP.post(uri, data.to_json, 'Content-Type' => 'application/json'). curl2code automatically detects -d/--data flags with JSON content and sets the appropriate Content-Type header in the net/http code.

How to add Bearer token authorization in Ruby?

Pass curl -H "Authorization: Bearer YOUR_TOKEN" URL to curl2code and it generates net/http code with the auth header: req['Authorization'] = 'Bearer YOUR_TOKEN'. curl2code detects Bearer tokens from both -H "Authorization: Bearer ..." and --oauth2-bearer flags. For Basic auth, use -u user:pass.

How to set Content-Type header in Ruby?

curl2code converts curl -H "Content-Type: application/json" URL to net/http code with the proper header: req['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 net/http API.

Useful Links

net/http Documentation

ruby-doc.org

Standard Library Reference

github.com

curl Man Page

curl.se

curl Guides

curl Error Codes

Look up any curl exit code — causes, fixes, and debugging tips.

Download Files with curl

Save files with -o, -O, follow redirects, resume downloads, and more.

SSL, TLS & Proxy

Configure certificates, TLS versions, HTTP/SOCKS proxies, and custom DNS.

How to copy curl from your browser

Ruby Code Examples

1Simple GET Request

2POST with JSON Body

3Request with Bearer Token

4Multipart Form Upload

5Custom Headers

Frequently Asked Questions

Useful Links

curl Guides

Convert curl to Other Languages

Ruby Code Examples

1Simple GET Request

2POST with JSON Body

3Request with Bearer Token

4Multipart Form Upload

5Custom Headers