rs/cors

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

2898 stars · 234 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

rs/cors is a Go library providing a configurable net/http handler that implements the Cross Origin Resource Sharing (CORS) W3C specification. It works as middleware for net/http and popular Go routers such as Goji, Martini, Negroni, and Alice.

Use cases

• add CORS headers to a Go HTTP server
• allow cross-origin requests from specific domains in Go
• handle CORS preflight OPTIONS requests
• enable CORS middleware for a Go router like Goji or Negroni
• prevent insecure wildcard origin with credentials configuration
• serve a JSON API consumed by browsers from other origins

When to choose

• you need standards-compliant CORS handling in a Go net/http application
• you want fine-grained control over allowed origins, methods, and headers
• you need a lightweight middleware that integrates with many Go routers

When to avoid

• your server is not written in Go
• you need CORS handled at the reverse proxy or API gateway level instead of application code
• you rely on the removed behavior of reflecting arbitrary origins with credentials enabled

Facets

library · maturity stable

middleware http-server security routing web-development backend apis security go cross-platform cors net-http http-middleware cross-origin-resource-sharing web-server

Member repositories

For agents

markdown · JSON · MCP: product_card(name="rs/cors")