ServerSocket.java: Define ANY_IF.

* java/net/ServerSocket.java: Define ANY_IF.
        (ServerSocket (int,int)): Use ANY_IF instead of null to bind to
        all network interfaces.
        * java/net/DatagramSocket.java (DatagramSocket): ditto.
        * java/net/natPlainSocketImpl.cc (bind): Expect 0.0.0' instead of
        null.
        * java/net/natPlainDatagramSocketImpl (bind): Expect 0.0.0'
        instead of null.

From-SVN: r28429

libjava/java/net/DatagramSocket.java

@@ -28,12 +28,12 @@ public class DatagramSocket
 
   public DatagramSocket() throws SocketException
   {
-    this(0, null);
+    this(0, ServerSocket.ANY_IF);
   }
 
   public DatagramSocket(int port) throws SocketException
   {
-    this(port, null);
+    this(port, ServerSocket.ANY_IF);
   }
 
   public DatagramSocket(int port, InetAddress laddr) throws SocketException

libjava/java/net/ServerSocket.java

@@ -25,6 +25,10 @@ public class ServerSocket
   static SocketImplFactory factory;
   SocketImpl impl;
 
+  static final byte[] zeros = {0,0,0,0};
+  /* dummy InetAddress, used to bind socket to any (all) network interfaces */
+  static final InetAddress ANY_IF = new InetAddress(zeros, null);
+
   public ServerSocket (int port)
     throws java.io.IOException
   {
@@ -34,7 +38,7 @@ public class ServerSocket
   public ServerSocket (int port, int backlog)
     throws java.io.IOException
   {
-    this(port, backlog, null);
+    this(port, backlog, ANY_IF);
   }
 
   public ServerSocket (int port, int backlog, InetAddress bindAddr)

libjava/java/net/natPlainDatagramSocketImpl.cc

@@ -101,16 +101,10 @@ java::net::PlainDatagramSocketImpl::bind (jint lport,
   // FIXME: prob. need to do a setsockopt with SO_BROADCAST to allow multicast.
   union SockAddr u;
   struct sockaddr *ptr = (struct sockaddr *) &u.address;
-  jbyte *bytes = NULL;
   // FIXME: Use getaddrinfo() to get actual protocol instead of assuming ipv4.
-  int len = 4;	// Initialize for INADDR_ANY in case host is NULL.
-
-  if (host != NULL)
-    {
-      jbyteArray haddress = host->address;
-      bytes = elements (haddress);
-      len = haddress->length;
-    }
+  jbyteArray haddress = host->address;
+  jbyte *bytes = elements (haddress);
+  int len = haddress->length;
 
   if (len == 4)
     {

libjava/java/net/natPlainSocketImpl.cc

@@ -71,17 +71,10 @@ java::net::PlainSocketImpl::bind (java::net::InetAddress *host, jint lport)
 {
   union SockAddr u;
   struct sockaddr *ptr = (struct sockaddr *) &u.address;
-  jbyte *bytes = NULL;
-  // FIXME: Use getaddrinfo() to get actual protocol instead of assuming ipv4.
-  int len = 4;	// Initialize for INADDR_ANY in case host is NULL.
+  jbyteArray haddress = host->address;
+  jbyte *bytes = elements (haddress);
+  int len = haddress->length;
 
-  if (host != NULL)
-    {
-      jbyteArray haddress = host->address;
-      bytes = elements (haddress);
-      len = haddress->length;
-    }
-  
   if (len == 4)
     {
       u.address.sin_family = AF_INET;