cancel_http.go

package main

import (
	"context"
	"fmt"
	"net/http"
	"time"
)

func main() {
	// Create a new context
	// With a deadline of 100 milliseconds
	ctx := context.Background()
	//100 ms
	ctx, _ = context.WithTimeout(ctx, 1000*time.Millisecond)

	// Make a request, that will call the google homepage
	req, _ := http.NewRequest(http.MethodGet, "https://www.google.com", nil)
	// Associate the cancellable context we just created to the request
	req = req.WithContext(ctx)

	// Create a new HTTP client and execute the request
	client := &http.Client{}
	res, err := client.Do(req)
	// If the request failed, log to STDOUT
	if err != nil {
		fmt.Println("Request failed:", err)
		return
	}
	// Print the statuscode if the request succeeds
	fmt.Println("Response received, status code:", res.StatusCode)
}