Which HTTP library is best for Nginx?

OpenResty's `resty.http` is the gold standard for Nginx environments because it uses non-blocking Lua cosockets, ensuring HTTP requests do not freeze worker processes.

Updated: August 2026 • Verified v1.2

cURL to Lua (LuaSocket & OpenResty) Code Converter

Developer ToolsHigh Usage

Local Browser Execution: Your input is processed locally in your browser and is not sent to UTL servers.

CLI AST Parser: cURL Command ➔ LuaSocket / OpenResty Code Synthesis

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Understanding Your Results

Translates cURL CLI commands into clean Lua code using `socket.http` and `ltn12` tables, or OpenResty `resty.http` with automated header formatting and payload body handling.

Practical Guidance & Next Steps

For standalone Lua scripts, use LuaSocket (`socket.http`). For Nginx API gateways or high-concurrency microservices, choose OpenResty (`resty.http`) for non-blocking cosockets.

What is this?

A developer programming utility that translates bash cURL commands into idiomatic Lua HTTP client code for LuaSocket and OpenResty.

How does it work?

1. Select LuaSocket or OpenResty. 2. Paste your cURL command into the editor. 3. Copy the clean Lua code in 1 click.

Why use it?

Eliminates tedious syntax translation when consuming third-party REST APIs in Lua scripts.

Technical Scope & Calculation Limitations

Parses standard HTTP/HTTPS cURL CLI syntax.

Frequently Asked Questions

LTN12 is LuaSocket's stream filtering library. It connects sources (data inputs like strings or files) to sinks (data outputs like tables or files) to stream HTTP request and response payloads efficiently without loading entire bodies into memory at once.

Windows Desktop & Widget Options