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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* 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"
+
+interface nsIPrincipal;
+interface nsIURI;
+interface nsIInterfaceRequestor;
+
+[scriptable, uuid(d74a17ac-5b8a-4824-a309-b1f04a3c4aed)]
+interface nsISpeculativeConnect : nsISupports
+{
+ /**
+ * Called as a hint to indicate a new transaction for the URI is likely coming
+ * soon. The implementer may use this information to start a TCP
+ * and/or SSL level handshake for that resource immediately so that it is
+ * ready and/or progressed when the transaction is actually submitted.
+ *
+ * No obligation is taken on by the implementer, nor is the submitter obligated
+ * to actually open the new channel.
+ *
+ * @param aURI the URI of the hinted transaction
+ * @param aPrincipal the principal that will be used for opening the
+ * channel of the hinted transaction.
+ * @param aCallbacks any security callbacks for use with SSL for interfaces
+ * such as nsIBadCertListener. May be null.
+ *
+ */
+ void speculativeConnect(in nsIURI aURI,
+ in nsIInterfaceRequestor aCallbacks);
+
+ void speculativeConnect2(in nsIURI aURI,
+ in nsIPrincipal aPrincipal,
+ in nsIInterfaceRequestor aCallbacks);
+
+ void speculativeAnonymousConnect(in nsIURI aURI,
+ in nsIInterfaceRequestor aCallbacks);
+
+ void speculativeAnonymousConnect2(in nsIURI aURI,
+ in nsIPrincipal aPrincipal,
+ in nsIInterfaceRequestor aCallbacks);
+};
+
+/**
+ * This is used to override the default values for various values (documented
+ * inline) to determine whether or not to actually make a speculative
+ * connection.
+ */
+[builtinclass, uuid(1040ebe3-6ed1-45a6-8587-995e082518d7)]
+interface nsISpeculativeConnectionOverrider : nsISupports
+{
+ /**
+ * Used to determine the maximum number of unused speculative connections
+ * we will have open for a host at any one time
+ */
+ [infallible] readonly attribute unsigned long parallelSpeculativeConnectLimit;
+
+ /**
+ * Used to determine if we will ignore the existence of any currently idle
+ * connections when we decide whether or not to make a speculative
+ * connection.
+ */
+ [infallible] readonly attribute boolean ignoreIdle;
+
+ /*
+ * Used by the Predictor to gather telemetry data on speculative connection
+ * usage.
+ */
+ [infallible] readonly attribute boolean isFromPredictor;
+
+ /**
+ * by default speculative connections are not made to RFC 1918 addresses
+ */
+ [infallible] readonly attribute boolean allow1918;
+};