Tor proxy

tor.go

// TorProxy initializes and returns a TOR SOCKS proxy function for use in a Transport
func TorProxy() func(*http.Request) (*url.URL, error) {
	// A source of uniformly-distributed pseudo-random
	rand.Seed(time.Now().UnixNano())
  
	// Pseudo-random int value
	num := rand.Intn(0x7fffffff-10000) + 10000
	
	// Tor listens for SOCKS connections on localhost port 9050
	base := "socks5://%d:x@127.0.0.1:9050"
	
	// proxy url with random credentials
	rawUrl := fmt.Sprintf(base, num)
	
	// Parse proxy url
	proxyUrl, err := url.Parse(rawUrl)
	if err != nil {
		fmt.Println("invalid url to parse when creating proxy transport. err: ", err)
		return nil
	}
	
	// Setup proxy transport
	proxy := http.ProxyURL(proxyUrl)

	return proxy
}