Merge pull request #8 from gjeanmart/master

Add support for DNS address

Author: ianopolous

src/main/java/io/ipfs/multiaddr/MultiAddress.java

@@ -40,7 +40,7 @@ public boolean isTCPIP() {
 
     public String getHost() {
         String[] parts = toString().substring(1).split("/");
-        if (parts[0].startsWith("ip"))
+        if (parts[0].startsWith("ip") || parts[0].startsWith("dns"))
             return parts[1];
         throw new IllegalStateException("This multiaddress doesn't have a host: "+toString());
     }

src/test/java/io/ipfs/api/MultiAddressTest.java

@@ -155,6 +155,17 @@ public void bytesToString() {
         test.accept("/ip4/127.0.0.1/udp/1234/ip4/127.0.0.1/tcp/4321", "047f0000011104d2047f0000010610e1");
     }
 
+   @Test
+    public void dns() {
+       String dns = "mydomain.com";
+       int port = 5001;
+       String address = "/dns6/"+dns+"/tcp/"+port+"/https";
+       MultiAddress multiAddress = new MultiAddress(address);
+       
+       Assert.assertEquals("host should be equal to " + dns, dns, multiAddress.getHost());
+       Assert.assertEquals("port should be equal to " + port, port, multiAddress.getTCPPort());
+    }
+
     public static byte[] fromHex(String hex) {
         if (hex.length() % 2 != 0)
             throw new IllegalStateException("Uneven number of hex digits!");