Accessing a URL using a loop

Question

I have created a web application, and hosted in on the server. Now I want to create a java program which will access (or "hit") the URL of my application in a loop, so that I can check how much load can my web application can handle. Also, the program should be able to tell me when the URL was successfully accessed, and when it wasn't.

I tried executing it without using a loop:

try {
        URL url = new URL("https://example.com/");
        BufferedReader in = new BufferedReader(
                new InputStreamReader(url.openStream()));

        String inputLine;
        while ((inputLine = in.readLine()) != null) {
            System.out.println(inputLine);
        }
        in.close();
    } catch (Exception e) {
        System.out.println("e: " + e.toString());
    }

But, I got this error:

e: javax.net.ssl.SSLHandshakeException: java.security.cert.CertificateException: No  subject alternative DNS name matching example.com found.

You need to import the certificates in your client keystore before you can hit the https url. — Juned Ahsan
– Juned Ahsan, Commented Aug 12, 2013 at 6:18
If it doesn't have to be https, you can use a command in a CMD window like so: ping -n 50 -l 1024 example.com — Obicere
– Obicere, Commented Aug 12, 2013 at 6:29

Jigar Joshi · Accepted Answer · 2013-08-12 06:21:18Z

2

Use,

javax.net.ssl.HttpsURLConnection

to connect to https://

something like (note, handle resource closing, exceptions etc left on you)

final URL url = new URL("https://example.com");
final HttpsURLConnection con = (HttpsURLConnection)url.openConnection();
final BufferedReader br = new BufferedReader(new InputStreamReader(con.getInputStream()));
String input;

while ((input = br.readLine()) != null){
    System.out.println(input);
}

However there are lots of tool available to load test it

answered Aug 12, 2013 at 6:21

Jigar Joshi

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Comments

Soosh · Accepted Answer · 2013-08-12 06:25:17Z

0

you are just getting a stream from url, but obviously this url is using HTTPS, so you need a "Public Key" imported to your client application. otherwise the client and server won't be able to communicate with each other.

answered Aug 12, 2013 at 6:25

Soosh

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