Change examples and readme to point at roughtime.int08h.com

README.md

@@ -14,11 +14,24 @@ time synchronisation in a secure way that doesn't depend on any particular time
 a way that, if a time server does misbehave, clients end up with cryptographic proof of it. It was 
 created by Adam Langley and Robert Obryk.
 
-## Links
+## Resources
 * [Nearenough Github repo](https://github.com/int08h/nearenough)
 * [Roughtime project](https://roughtime.googlesource.com/roughtime)
 * My blog posts [describing Roughtime features](https://int08h.com/post/to-catch-a-lying-timeserver/) and 
   exploring the [Nearenough API and details of Roughtime messages](https://int08h.com/post/roughtime-message-anatomy/).
+
+### Public int08h.com Roughtime Server
+
+A publicly accessible Roughtime server is available at `roughtime.int08h.com` port `2002`. The
+server's long-term public key is `016e6e0284d24c37c6e4d7d8d5b4e1d3c1949ceaa545bf875616c9dce0c9bec1`
+and can verified by querying the server's DNS `TXT` record:
+
+```bash
+$ dig -t txt roughtime.int08h.com
+...
+;; ANSWER SECTION:
+roughtime.int08h.com.  1799  IN   TXT    "016e6e0284d24c37c6e4d7d8d5b4e1d3c1949ceaa545bf875616c9dce0c9bec1"
+```
 
 ## Building
 Gradle is used to build Nearenough. Run the tests:

src/main/java/nearenough/examples/NettyClient.java

@@ -40,13 +40,13 @@
  */
 public final class NettyClient {
 
-  // Hostname and port of the public Google Roughtime server
-  private static final String GOOGLE_SERVER_HOST = "roughtime.sandbox.google.com";
-  private static final int GOOGLE_SERVER_PORT = 2002;
+  // Hostname and port of the public int08h.com Roughtime server
+  private static final String INT08H_SERVER_HOST = "roughtime.int08h.com";
+  private static final int INT08H_SERVER_PORT = 2002;
 
-  // Long-term public key of the public Google Roughtime server
-  private static final byte[] GOOGLE_SERVER_PUBKEY = hexToBytes(
-      "7ad3da688c5c04c635a14786a70bcf30224cc25455371bf9d4a2bfb64b682534"
+  // Long-term public key of the public int08h.com Roughtime server
+  private static final byte[] INT08H_SERVER_PUBKEY = hexToBytes(
+      "016e6e0284d24c37c6e4d7d8d5b4e1d3c1949ceaa545bf875616c9dce0c9bec1"
   );
 
   private static final class RequestHandler extends SimpleChannelInboundHandler<DatagramPacket> {
@@ -59,7 +59,7 @@ public RequestHandler(InetSocketAddress addr) {
 
       // Creates a new RoughtimeClient.
       // Behind the scenes SecureRandom will be used to generate a unique nonce.
-      this.client = new RoughtimeClient(GOOGLE_SERVER_PUBKEY);
+      this.client = new RoughtimeClient(INT08H_SERVER_PUBKEY);
     }
 
     @Override
@@ -133,7 +133,7 @@ public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
   }
 
   public static void main(String[] args) throws InterruptedException {
-    InetSocketAddress addr = new InetSocketAddress(GOOGLE_SERVER_HOST, GOOGLE_SERVER_PORT);
+    InetSocketAddress addr = new InetSocketAddress(INT08H_SERVER_HOST, INT08H_SERVER_PORT);
 
     System.out.printf("Sending request to %s\n", addr);
 

src/main/java/nearenough/examples/NioClient.java

@@ -33,26 +33,26 @@
  */
 public final class NioClient {
 
-  // Hostname and port of the public Google Roughtime server
-  private static final String GOOGLE_SERVER_HOST = "roughtime.sandbox.google.com";
-  private static final int GOOGLE_SERVER_PORT = 2002;
+  // Hostname and port of the public int08h.com Roughtime server
+  private static final String INT08H_SERVER_HOST = "roughtime.int08h.com";
+  private static final int INT08H_SERVER_PORT = 2002;
 
-  // Long-term public key of the public Google Roughtime server
-  private static final byte[] GOOGLE_SERVER_PUBKEY = hexToBytes(
-      "7ad3da688c5c04c635a14786a70bcf30224cc25455371bf9d4a2bfb64b682534"
+  // Long-term public key of the public int08h.com Roughtime server
+  private static final byte[] INT08H_SERVER_PUBKEY = hexToBytes(
+      "016e6e0284d24c37c6e4d7d8d5b4e1d3c1949ceaa545bf875616c9dce0c9bec1"
   );
 
   @SuppressWarnings("Duplicates")
   public static void main(String[] args) throws IOException, InterruptedException {
-    InetSocketAddress addr = new InetSocketAddress(GOOGLE_SERVER_HOST, GOOGLE_SERVER_PORT);
+    InetSocketAddress addr = new InetSocketAddress(INT08H_SERVER_HOST, INT08H_SERVER_PORT);
     System.out.printf("Sending request to %s\n", addr);
 
     // Nonblocking NIO UDP channel for the remote Roughtime server
     DatagramChannel channel = DatagramChannel.open(StandardProtocolFamily.INET);
     channel.configureBlocking(false);
 
     // Create a new RoughtimeClient instance
-    RoughtimeClient client = new RoughtimeClient(GOOGLE_SERVER_PUBKEY);
+    RoughtimeClient client = new RoughtimeClient(INT08H_SERVER_PUBKEY);
 
     // Create a request message
     RtMessage request = client.createRequest();