7085981: XXSocket types depend on impl finalizer to close if constructor throws exception

Reviewed-by: alanb, chegar

src/share/classes/java/net/DatagramSocket.java

@@ -174,9 +174,7 @@ class DatagramSocket implements java.io.Closeable {
      * @see SecurityManager#checkListen
      */
     public DatagramSocket() throws SocketException {
-        // create a datagram socket.
-        createImpl();
-        bind(new InetSocketAddress(0));
+        this(new InetSocketAddress(0));
     }
 
     /**
@@ -221,7 +219,12 @@ class DatagramSocket implements java.io.Closeable {
         // create a datagram socket.
         createImpl();
         if (bindaddr != null) {
-            bind(bindaddr);
+            try {
+                bind(bindaddr);
+            } finally {
+                if (!isBound())
+                    close();
+            }
         }
     }
 

src/share/classes/java/net/MulticastSocket.java

@@ -162,7 +162,12 @@ class MulticastSocket extends DatagramSocket {
         setReuseAddress(true);
 
         if (bindaddr != null) {
-            bind(bindaddr);
+            try {
+                bind(bindaddr);
+            } finally {
+                if (!isBound())
+                    close();
+            }
         }
     }
 

src/share/classes/java/net/Socket.java

@@ -425,6 +425,10 @@ class Socket implements java.io.Closeable {
         } catch (IOException e) {
             close();
             throw e;
+        } finally {
+            // if bind() or connect threw a runtime exception
+            if ((localAddr != null && !bound) || (address != null && !connected))
+                close();
         }
     }