package co.poynt.samples.codesamples.utils; import java.io.IOException; import java.net.InetAddress; import java.net.Socket; import java.net.UnknownHostException; import java.security.KeyManagementException; import java.security.NoSuchAlgorithmException; import javax.net.ssl.SSLContext; import javax.net.ssl.SSLSocket; import javax.net.ssl.SSLSocketFactory; /** * @author fkrauthan * source: https://blog.dev-area.net/2015/08/13/android-4-1-enable-tls-1-1-and-tls-1-2/ */ public class TLSSocketFactory extends SSLSocketFactory { private SSLSocketFactory internalSSLSocketFactory; public TLSSocketFactory() throws KeyManagementException, NoSuchAlgorithmException { SSLContext context = SSLContext.getInstance("TLS"); context.init(null, null, null); internalSSLSocketFactory = context.getSocketFactory(); } @Override public String[] getDefaultCipherSuites() { return internalSSLSocketFactory.getDefaultCipherSuites(); } @Override public String[] getSupportedCipherSuites() { return internalSSLSocketFactory.getSupportedCipherSuites(); } @Override public Socket createSocket(Socket s, String host, int port, boolean autoClose) throws IOException { return enableTLSOnSocket(internalSSLSocketFactory.createSocket(s, host, port, autoClose)); } @Override public Socket createSocket(String host, int port) throws IOException, UnknownHostException { return enableTLSOnSocket(internalSSLSocketFactory.createSocket(host, port)); } @Override public Socket createSocket(String host, int port, InetAddress localHost, int localPort) throws IOException, UnknownHostException { return enableTLSOnSocket(internalSSLSocketFactory.createSocket(host, port, localHost, localPort)); } @Override public Socket createSocket(InetAddress host, int port) throws IOException { return enableTLSOnSocket(internalSSLSocketFactory.createSocket(host, port)); } @Override public Socket createSocket(InetAddress address, int port, InetAddress localAddress, int localPort) throws IOException { return enableTLSOnSocket(internalSSLSocketFactory.createSocket(address, port, localAddress, localPort)); } private Socket enableTLSOnSocket(Socket socket) { if(socket != null && (socket instanceof SSLSocket)) { ((SSLSocket)socket).setEnabledProtocols(new String[] {"TLSv1.2"}); } return socket; } }