Utility to debug Java https connection
If the certificate of the host is not valid (self signed) or didn't well configured in java keystore, then it will fail to connect.
Java
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintStream;
import javax.net.ssl.SSLHandshakeException;
import javax.net.ssl.SSLSocket;
import javax.net.ssl.SSLSocketFactory;
public class SSLPoke
{
public static void main(String[] paramArrayOfString)
{
if (paramArrayOfString.length != 2)
{
System.err.println("Utility to debug Java connections to SSL servers");
System.err.println("Usage: ");
System.err.println(" java " + SSLPoke.class.getName() + " <host> <port>");
System.err.println("or for more debugging:");
System.err.println(" java -Djavax.net.debug=ssl " + SSLPoke.class.getName() + " <host> <port>");
System.err.println();
System.err.println("Eg. to test the SSL certificate at https://localhost, use");
System.err.println(" java " + SSLPoke.class.getName() + " localhost 443");
System.exit(1);
}
try
{
SSLSocketFactory localSSLSocketFactory = (SSLSocketFactory)SSLSocketFactory.getDefault();
SSLSocket localSSLSocket = (SSLSocket)localSSLSocketFactory.createSocket(paramArrayOfString[0], Integer.parseInt(paramArrayOfString[1]));
InputStream localInputStream = localSSLSocket.getInputStream();
OutputStream localOutputStream = localSSLSocket.getOutputStream();
localOutputStream.write(1);
while (localInputStream.available() > 0) {
System.out.print(localInputStream.read());
}
System.out.println("Successfully connected");
System.exit(0);
}
catch (SSLHandshakeException localSSLHandshakeException)
{
if (localSSLHandshakeException.getCause() != null) {
localSSLHandshakeException.getCause().printStackTrace();
} else {
localSSLHandshakeException.printStackTrace();
}
}
catch (Exception localException)
{
localException.printStackTrace();
}
System.exit(1);
}
}
Note
If can't connect to SSL server, please use portecle to import the host's certificate into java keystore and test again.