Java

REST through HTTP Proxy

See more REST Examples

Demonstrates how to connect through an HTTP proxy to make REST API calls. Chilkat2 Java

import com.chilkatsoft.chilkat2.AuthAws;
import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.Rest;
import com.chilkatsoft.chilkat2.Socket;
import com.chilkatsoft.chilkat2.Xml;

public class ChilkatExample {

    public static void main(String[] args) {
        // This example requires the Chilkat API to have been previously unlocked.
        // See Global Unlock Sample for sample code.

        // This example connects to a REST server through an HTTP proxy.
        // It will connect to the Amazon AWS service for this example.
        Rest rest = new Rest();
        Socket socket = new Socket();

        // Set the HTTP proxy domain or IP address, and port.
        socket.setHttpProxyHostname("192.168.1.100");
        socket.setHttpProxyPort(8088);

        // We want to tell the socket object that we're doing HTTP over the proxy connection.
        // This is because an HTTP proxy used for other protocols (IMAP, SMTP, SSH, FTP, etc.)
        // can require some internal differences in behavior (i.e. how we do things).
        socket.setHttpProxyForHttp(true);

        // Other properties exist for specifying a proxy login, password, and authentication method (such as NTLM),
        // but these are not used in this example.

        // Connect through the HTTP proxy to the Amazon AWS server for the S3 service.
        boolean bTls = true;
        int port = 443;
        int maxWaitMs = 5000;
        try {
            socket.connect("s3.amazonaws.com", port, bTls, maxWaitMs);
        } catch (ChilkatException e) {
            System.out.println("Connect Failure Error Code: " + socket.getConnectFailReason());
            System.out.println(e.getLastErrorText());
            return;
        }

        // Use the proxied TLS connection:
        try {
            rest.useConnection(socket, true);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        // Provide AWS credentials for the REST call.
        AuthAws authAws = new AuthAws();
        authAws.setAccessKey("AWS_ACCESS_KEY");
        authAws.setSecretKey("AWS_SECRET_KEY");
        authAws.setServiceName("s3");
        rest.setAuthAws(authAws);

        // List all buckets for the account...
        String responseXml;
        try {
            responseXml = rest.fullRequestNoBody("GET", "/");
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        Xml xml = new Xml();
        xml.loadXml(responseXml);

        // Show the full XML returned.
        System.out.println(xml.getXml());

        // Iterate over the buckets, showing each bucket name.
        xml.findChild2("Buckets");
        if (xml.firstChild2()) {
            System.out.println(xml.getChildContent("Name"));
            while (xml.nextSibling2()) {
                System.out.println(xml.getChildContent("Name"));
            }
        }

        // Move the internal pointer back to the root node.
        xml.getRoot2();
    }
}