package com.ecwid.consul.transport;

import java.io.FileInputStream;
import java.io.IOException;
import java.security.KeyManagementException;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import java.security.UnrecoverableKeyException;
import java.security.cert.CertificateException;

import javax.net.ssl.KeyManager;
import javax.net.ssl.KeyManagerFactory;
import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.TrustManagerFactory;

import org.apache.http.client.HttpClient;
import org.apache.http.conn.scheme.Scheme;
import org.apache.http.conn.ssl.SSLSocketFactory;

import com.ecwid.consul.transport.TLSConfig.KeyStoreInstanceType;

/**
 * Default HTTPS client This class is thread safe
 *
 * @author Carlos Augusto Ribeiro Mantovani (gutomantovani@gmail.com)
 */
public final class DefaultHttpsTransport extends AbstractHttpTransport {

    public DefaultHttpsTransport(TLSConfig tlsConfig) {

	KeyStore clientStore;
	try {
	    clientStore = KeyStore.getInstance(tlsConfig.getKeyStoreInstanceType().name());

	    clientStore.load(new FileInputStream(tlsConfig.getCertficatePath()), tlsConfig.getCertificatePassword().toCharArray());

	    KeyManagerFactory kmf = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm());
	    kmf.init(clientStore, "".toCharArray());
	    KeyManager[] kms = kmf.getKeyManagers();

	    KeyStore trustStore = KeyStore.getInstance(KeyStoreInstanceType.JKS.name());
	    trustStore.load(new FileInputStream(tlsConfig.getKeyStorePath()), tlsConfig.getKeyStorePassword().toCharArray());

	    TrustManagerFactory tmf = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
	    tmf.init(trustStore);
	    TrustManager[] tms = tmf.getTrustManagers();

	    SSLContext sslContext = null;
	    sslContext = SSLContext.getInstance("TLS");
	    sslContext.init(kms, tms, new SecureRandom());

	    SSLSocketFactory sf = new SSLSocketFactory(sslContext);
	    Scheme sch = new Scheme("https", sf, tlsConfig.getSslPort());
	    this.httpClient.getConnectionManager().getSchemeRegistry().register(sch);

	} catch (KeyStoreException | NoSuchAlgorithmException | CertificateException | IOException | UnrecoverableKeyException
	        | KeyManagementException e) {
	    throw new TransportException(e);
	}
    }

    public DefaultHttpsTransport(HttpClient httpClient) {
	super(httpClient);
    }

}

package com.ecwid.consul.transport;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.security.KeyManagementException;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import java.security.UnrecoverableKeyException;
import java.security.cert.CertificateException;

import javax.net.ssl.KeyManager;
import javax.net.ssl.KeyManagerFactory;
import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.TrustManagerFactory;

import org.apache.http.client.HttpClient;
import org.apache.http.conn.scheme.Scheme;
import org.apache.http.conn.ssl.SSLSocketFactory;

import com.ecwid.consul.transport.TLSConfig.KeyStoreInstanceType;

/**
 * Default HTTPS client This class is thread safe
 *
 * @author Carlos Augusto Ribeiro Mantovani (gutomantovani@gmail.com)
 */
public final class DefaultHttpsTransport extends AbstractHttpTransport {

    public DefaultHttpsTransport(TLSConfig tlsConfig) {

	KeyStore clientStore;
	try {
	    clientStore = KeyStore.getInstance(tlsConfig.getKeyStoreInstanceType().name());

	    clientStore.load(new FileInputStream(tlsConfig.getCertficatePath()), tlsConfig.getCertificatePassword().toCharArray());

	    KeyManagerFactory kmf = KeyManagerFactory.getInstance(KeyManagerFactory.getDefaultAlgorithm());
	    kmf.init(clientStore, "".toCharArray());
	    KeyManager[] kms = kmf.getKeyManagers();

	    KeyStore trustStore = KeyStore.getInstance(KeyStoreInstanceType.JKS.name());
	    trustStore.load(new FileInputStream(tlsConfig.getKeyStorePath()), tlsConfig.getKeyStorePassword().toCharArray());

	    TrustManagerFactory tmf = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
	    tmf.init(trustStore);
	    TrustManager[] tms = tmf.getTrustManagers();

	    SSLContext sslContext = null;
	    sslContext = SSLContext.getInstance("TLS");
	    sslContext.init(kms, tms, new SecureRandom());

	    SSLSocketFactory sf = new SSLSocketFactory(sslContext);
	    Scheme sch = new Scheme("https", sf, tlsConfig.getSslPort());
	    this.httpClient.getConnectionManager().getSchemeRegistry().register(sch);

	} catch (KeyStoreException e) {
	    throw new TransportException(e);
	} catch (NoSuchAlgorithmException e) {
	    throw new TransportException(e);
	} catch (CertificateException e) {
	    throw new TransportException(e);
	} catch (FileNotFoundException e) {
	    throw new TransportException(e);
	} catch (IOException e) {
	    throw new TransportException(e);
	} catch (UnrecoverableKeyException e) {
	    throw new TransportException(e);
	} catch (KeyManagementException e) {
	    throw new TransportException(e);
	}
    }

    public DefaultHttpsTransport(HttpClient httpClient) {
	super(httpClient);
    }

}

Adjust to work with jre6