Java proxy setup, URL and System.setProperty?

Question

I made a java application that gets response time from the internet. I work because of the proxy server, now I have this problem that I can not understand, my code is disabled here

URL website = new URL("http", proxy, Integer.parseInt(proxyPort), websiteUrl)
BufferedReader in = new BufferedReader(new InputStreamReader(website.openStream()));
long start = System.currentTimeMillis();
while ((in.readLine()) != null){}
long elapsedTimeMillis = System.currentTimeMillis()-start;

Vs

URL website = new URL(websiteUrl);
System.setProperty("http.proxyHost", proxy);
System.setProperty("http.proxyPort", proxyPort);
BufferedReader in = new BufferedReader(new InputStreamReader(website.openStream()));
long start = System.currentTimeMillis();
while ((in.readLine()) != null){}
long elapsedTimeMillis = System.currentTimeMillis()-start;

When i use

URL website = new URL(websiteUrl);
System.setProperty("http.proxyHost", proxy);
System.setProperty("http.proxyPort", proxyPort);

I get an average response time of 0.064

and when i use

URL website = new URL("http", proxy, Integer.parseInt(proxyPort), websiteUrl)

I get a much higher response time of 0.219. How can I tell which one gives me the exact time?

Answer 1

Check out the Javadoc form you use to create an instance of your URL in the first case, it does not do what you want:

URL (String protocol, String host, int port, String file)
Creates a URL object from the specified protocol, host, port number, and file.

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http://proxyhost:3128/http://mysite.com/index.html

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Answer 2

. HTTP- -. , HTTP URL InputStream, , .