diff -r ea7aa63169db -r f5dcf30f9206 jdk/src/share/classes/sun/net/www/protocol/http/HttpURLConnection.java
--- a/jdk/src/share/classes/sun/net/www/protocol/http/HttpURLConnection.java	Fri Oct 09 16:11:11 2009 -0700
+++ b/jdk/src/share/classes/sun/net/www/protocol/http/HttpURLConnection.java	Thu Oct 15 12:03:31 2009 +0100
@@ -1180,6 +1180,10 @@
                 inputStream = http.getInputStream();
 
                 respCode = getResponseCode();
+                if (respCode == -1) {
+                    disconnectInternal();
+                    throw new IOException ("Invalid Http response");
+                }
                 if (respCode == HTTP_PROXY_AUTH) {
                     if (streaming()) {
                         disconnectInternal();