Example #1
0
// Do sends an HTTP request with the provided http.Client and returns an HTTP response.
// If the client is nil, http.DefaultClient is used.
// If the context is canceled or times out, ctx.Err() will be returned.
func Do(ctx context.Context, client *http.Client, req *http.Request) (*http.Response, error) {
	if client == nil {
		client = http.DefaultClient
	}

	// Request cancelation changed in Go 1.5, see cancelreq.go and cancelreq_go14.go.
	cancel := canceler(client, req)

	type responseAndError struct {
		resp *http.Response
		err  error
	}
	result := make(chan responseAndError, 1)

	go func() {
		resp, err := client.Do(req)
		result <- responseAndError{resp, err}
	}()

	select {
	case <-ctx.Done():
		cancel()
		return nil, ctx.Err()
	case r := <-result:
		return r.resp, r.err
	}
}
Example #2
0
func handleSignals(sigch <-chan os.Signal, ctx context.Context, cancel context.CancelFunc) {
	select {
	case <-ctx.Done():
	case sig := <-sigch:
		switch sig {
		case os.Interrupt:
			log.Println("SIGINT")
		case syscall.SIGTERM:
			log.Println("SIGTERM")
		}
		cancel()
	}
}