Implement socket API

classpath/java/net/InetAddress.java

@@ -13,41 +13,61 @@ package java.net;
 import java.io.IOException;
 
 public class InetAddress {
-  private final String address;
+  private final String name;
+  private final int ip;
 
-  private InetAddress(String address) {
-    this.address = address;
+  private InetAddress(String name) throws UnknownHostException {
+    this.name = name;
+    this.ip = ipv4AddressForName(name);
+    if (ip == 0) {
+        throw new UnknownHostException(name);
+    }
   }
 
+  public String getHostName() {
+	return name;
+  }
+  
   public String getHostAddress() {
-    return address;
+	try {
+		return new InetAddress(name).toString();
+	} catch (UnknownHostException e) {
+		return null;	// Strange case
+	}
   }
 
-  public static InetAddress getByName(String name)
-    throws UnknownHostException
-  {
+  public static InetAddress getByName(String name) throws UnknownHostException {
     try {
       Socket.init();
+      return new InetAddress(name);
     } catch (IOException e) {
       UnknownHostException uhe = new UnknownHostException(name);
       uhe.initCause(e);
       throw uhe;
     }
-
-    int address = ipv4AddressForName(name);
-    if (address == 0) {
-      throw new UnknownHostException(name);
-    } else {
-      return new InetAddress(ipv4AddressToString(address));
-    }
   }
 
-  private static String ipv4AddressToString(int address) {
-    return (((address >>> 24)       ) + "." +
-            ((address >>> 16) & 0xFF) + "." +
-            ((address >>> 8 ) & 0xFF) + "." +
-            ((address       ) & 0xFF));
+  public byte[] getAddress() {
+	  byte[] res = new byte[4];
+	  res[0] = (byte) ( ip >>> 24);
+	  res[1] = (byte) ((ip >>> 16) & 0xFF);
+	  res[2] = (byte) ((ip >>> 8 ) & 0xFF);
+	  res[3] = (byte) ((ip       ) & 0xFF);
+	  return res;
   }
-
-  private static native int ipv4AddressForName(String name);
+  
+  @Override
+	public String toString() {
+	  byte[] addr = getAddress();
+	  return (int)((addr[0] + 256) % 256) + "." + 
+	         (int)((addr[1] + 256) % 256) + "." + 
+	         (int)((addr[2] + 256) % 256) + "." + 
+	         (int)((addr[3] + 256) % 256);
+	}
+  
+  int getRawAddress() {
+	  return ip;
+  }
+  
+  static native int ipv4AddressForName(String name);
 }