👀 Views: 50 💬 Answers: 1 📅 Created: 2025-06-19

go http context middleware Go

I tried several approaches but none seem to work... I'm working with an scenario with managing context cancellation in my Go HTTP server. I have set up a basic server using the `net/http` package, but I'm not sure how to properly handle context cancellation when a request times out. I’ve implemented a middleware to set up the context and a timeout for the requests, but when the timeout occurs, my handler doesn't seem to respond as expected. Here’s how I've set up my server and middleware: ```go package main import ( "context" "fmt" "net/http" "time" ) func timeoutMiddleware(next http.Handler) http.Handler { return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { ctx, cancel := context.WithTimeout(r.Context(), 2*time.Second) defer cancel() r = r.WithContext(ctx) next.ServeHTTP(w, r) }) } func myHandler(w http.ResponseWriter, r *http.Request) { // Simulating a long process time.Sleep(3 * time.Second) fmt.Fprintln(w, "Request processed") } func main() { mux := http.NewServeMux() mux.Handle("/test", timeoutMiddleware(http.HandlerFunc(myHandler))) http.ListenAndServe(":8080", mux) } ``` When I make a request to `/test`, after 2 seconds, I expect the context to cancel and the connection to close gracefully. However, instead of a proper timeout message, I just get a hanging connection that eventually returns a 500 internal server behavior. I have also tried logging the context's behavior after the timeout occurs, but it seems that the handler is not responding in a timely manner. Is there something I'm missing in my handler that prevents it from checking for context cancellation? Should I be using `http.behavior` to return a specific behavior response? Any insights or best practices for handling context cancellation in this scenario would be greatly appreciated! Am I missing something obvious? Am I missing something obvious? I'm using Go latest in this project.