diff -r 000000000000 -r 6474c204b198 netwerk/dns/nsIDNSRecord.idl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/netwerk/dns/nsIDNSRecord.idl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,89 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsISupports.idl"
+
+%{ C++
+namespace mozilla {
+namespace net {
+union NetAddr;
+}
+}
+%}
+native NetAddr(mozilla::net::NetAddr);
+interface nsINetAddr;
+
+/**
+ * nsIDNSRecord
+ *
+ * this interface represents the result of a DNS lookup.  since a DNS
+ * query may return more than one resolved IP address, the record acts
+ * like an enumerator, allowing the caller to easily step through the
+ * list of IP addresses.
+ */
+[scriptable, uuid(95ced6f3-44b4-4427-a149-c9a1e033d852)]
+interface nsIDNSRecord : nsISupports
+{
+    /**
+     * @return the canonical hostname for this record.  this value is empty if
+     * the record was not fetched with the RESOLVE_CANONICAL_NAME flag.
+     *
+     * e.g., www.mozilla.org --> rheet.mozilla.org
+     */
+    readonly attribute ACString canonicalName;
+
+    /**
+     * this function copies the value of the next IP address into the
+     * given NetAddr struct and increments the internal address iterator.
+     *
+     * @param aPort
+     *        A port number to initialize the NetAddr with.
+     *
+     * @throws NS_ERROR_NOT_AVAILABLE if there is not another IP address in
+     * the record.
+     */
+    [noscript] NetAddr getNextAddr(in uint16_t aPort);
+
+    /**
+     * this function returns the value of the next IP address as a
+     * scriptable address and increments the internal address iterator.
+     *
+     * @param aPort
+     *        A port number to initialize the nsINetAddr with.
+     *
+     * @throws NS_ERROR_NOT_AVAILABLE if there is not another IP address in
+     * the record.
+     */
+    nsINetAddr getScriptableNextAddr(in uint16_t aPort);
+
+    /**
+     * this function returns the value of the next IP address as a
+     * string and increments the internal address iterator.
+     *
+     * @throws NS_ERROR_NOT_AVAILABLE if there is not another IP address in
+     * the record.
+     */
+    ACString getNextAddrAsString();
+
+    /**
+     * this function returns true if there is another address in the record.
+     */
+    boolean hasMore();
+
+    /**
+     * this function resets the internal address iterator to the first
+     * address in the record.
+     */
+    void rewind();
+
+    /**
+     * This function indicates that the last address obtained via getNextAddr*()
+     * was not usuable and should be skipped in future uses of this
+     * record if other addresses are available.
+     *
+     * @param aPort is the port number associated with the failure, if any.
+     *        It may be zero if not applicable.
+     */
+    void reportUnusable(in uint16_t aPort);
+};