HttpsHello.java - HTTPS Server Test Program

This section provides a tutorial example on how to write a HTTPS server test program, HttpsHello.java. It writes back a simple Web page using the HTTPS protocol.

To test how HTTPS works, I wrote a simple HTTPS server test program:

/* HttpsHello.java
 * Copyright (c) 2014 HerongYang.com, All Rights Reserved.
 */
import java.io.*;
import java.security.*;
import javax.net.ssl.*;
public class HttpsHello {
   public static void main(String[] args) {
      String ksName = "herong.jks";
      char ksPass[] = "HerongJKS".toCharArray();
      char ctPass[] = "My1stKey".toCharArray();
      try {
         KeyStore ks = KeyStore.getInstance("JKS");
         ks.load(new FileInputStream(ksName), ksPass);
         KeyManagerFactory kmf = 
         KeyManagerFactory.getInstance("SunX509");
         kmf.init(ks, ctPass);
         SSLContext sc = SSLContext.getInstance("TLS");
         sc.init(kmf.getKeyManagers(), null, null);
         SSLServerSocketFactory ssf = sc.getServerSocketFactory();
         SSLServerSocket s 
            = (SSLServerSocket) ssf.createServerSocket(8888);
         System.out.println("Server started:");
         printServerSocketInfo(s);
         // Listening to the port
         SSLSocket c = (SSLSocket) s.accept();
         printSocketInfo(c);
         BufferedWriter w = new BufferedWriter(
            new OutputStreamWriter(c.getOutputStream()));
         BufferedReader r = new BufferedReader(
            new InputStreamReader(c.getInputStream()));
         String m = r.readLine();
         w.write("HTTP/1.0 200 OK");
         w.newLine();
         w.write("Content-Type: text/html");
         w.newLine();
         w.newLine();
         w.write("<html><body>Hello world!</body></html>");
         w.newLine();
         w.flush();
         w.close();
         r.close();
         c.close();
      } catch (Exception e) {
         e.printStackTrace();
      }
   }
   private static void printSocketInfo(SSLSocket s) {
      System.out.println("Socket class: "+s.getClass());
      System.out.println("   Remote address = "
         +s.getInetAddress().toString());
      System.out.println("   Remote port = "+s.getPort());
      System.out.println("   Local socket address = "
         +s.getLocalSocketAddress().toString());
      System.out.println("   Local address = "
         +s.getLocalAddress().toString());
      System.out.println("   Local port = "+s.getLocalPort());
      System.out.println("   Need client authentication = "
         +s.getNeedClientAuth());
      SSLSession ss = s.getSession();
      System.out.println("   Cipher suite = "+ss.getCipherSuite());
      System.out.println("   Protocol = "+ss.getProtocol());
   }
   private static void printServerSocketInfo(SSLServerSocket s) {
      System.out.println("Server socket class: "+s.getClass());
      System.out.println("   Socket address = "
         +s.getInetAddress().toString());
      System.out.println("   Socket port = "
         +s.getLocalPort());
      System.out.println("   Need client authentication = "
         +s.getNeedClientAuth());
      System.out.println("   Want client authentication = "
         +s.getWantClientAuth());
      System.out.println("   Use client mode = "
         +s.getUseClientMode());
   } 
}

If you want to run this program with default arguments, you need has a JKS type keystore file, herong.jks, with a store password of "HerongJKS" and a private key password of "My1stKey".

C:\herong>java

Server started:
Server socket class: class sun.security.ssl.SSLServerSocketImpl
   Socket address = 0.0.0.0/0.0.0.0
   Socket port = 8888
   Need client authentication = false
   Want client authentication = false
   Use client mode = false

See the next section for the HTTPS client test program.

Last update: 2015.

Table of Contents

 About This JDK Tutorial Book

 JDK (Java Development Kit)

 Java Date-Time API

 Date, Time and Calendar Classes

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 Number Object and Numeric String Conversion

 Locales, Localization Methods and Resource Bundles

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 XSL (Extensible Stylesheet Language)

 Message Digest Algorithm Implementations in JDK

 Private key and Public Key Pair Generation

 PKCS#8/X.509 Private/Public Encoding Standards

 Digital Signature Algorithm and Sample Program

 "keytool" Commands and "keystore" Files

 KeyStore and Certificate Classes

 Secret Key Generation and Management

 Cipher - Encryption and Decryption

 The SSL (Secure Socket Layer) Protocol

 SSL Socket Communication Testing Programs

 SSL Client Authentication

HTTPS (Hypertext Transfer Protocol Secure)

 What Is HTTPS?

HttpsHello.java - HTTPS Server Test Program

 HttpsClient.java - HTTPS Client Test Program

 HttpsClient.java Failed with JDK 1.8

 Using SO_LINGER Socket Option

 Connecting to HttpsHello.java with IE

 HttpsEchoer.java - A Better HTTPS Server

 Outdated Tutorials

 References

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