Http.HandlerFunc
http.HandlerFunc is a Go function type that adapts a request-handling function to the http.Handler interface.
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http.HandlerFunc is Go's net/http function adapter type for handling an HTTP request and writing its response.
- How it is used
- Connects Go HTTP routes and test servers to functions that handle requests and write responses.
- How deep it goes
- Works through registration, path-value lookup, early error returns, and direct handler tests; does not examine adapter internals.
- Examples
- Uses a game-status endpoint, a habit-tick endpoint, and a test server returning an HTTP response.
- What you can do after
- Build it from scratch as a routed endpoint, then test it directly or use it to supply a test-server response.
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Go by Example
http.HandlerFunc is a Go function type that adapts a function with an HTTP handler signature to the http.Handler interface.
- How it is used
- Adapts ordinary HTTP functions and closures for servers, routing, and test servers that require http.Handler.
- How deep it goes
- Defines the adapter and its delegating ServeHTTP method, then applies it to production and testing examples.
- Examples
- Uses Health serving, a dependency-injected Shorten closure, and an httptest.Server closure.
- What you can do after
- Build HTTP services and tests by converting functions or closures with http.HandlerFunc for ListenAndServe and httptest.NewServer.
Related concepts
- handlerimplements · A handler is a callable or software component that processes an event, request, message, or other input and performs associated processing.
- http.HandleFuncused by · http.HandleFunc is a Go net/http function that registers a handler function for HTTP requests matching a specified pattern.
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