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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Use the <code>chrome.dial</code> API to discover devices that support DIAL.
// Protocol specification: http://www.dial-multiscreen.org/
namespace dial {
// Represents a unique device that responded to a DIAL discovery request.
dictionary DialDevice {
// A label identifying the device within this instance of the browser.
// Not guaranteed to persist beyond browser instances.
DOMString deviceLabel;
// A URL pointing to the device description resource for the device.
DOMString deviceDescriptionUrl;
// The uPnP configuration ID reported by the device. Corresponds to the
// CONFIGID.UPNP.ORG header in the M-SEARCH response.
long? configId;
};
enum DialErrorCode {
no_listeners,
no_valid_network_interfaces,
network_disconnected,
cellular_network,
socket_error,
unknown
};
dictionary DialError {
DialErrorCode code;
};
callback BooleanCallback = void (boolean result);
interface Functions {
// Requests that DIAL discovery happen immediately. The request may not be
// honored as discovery may already be happening in the background. The
// callback is invoked with |true| if discovery was initiated or |false|
// otherwise.
static void discoverNow(BooleanCallback callback);
};
interface Events {
// Event fired to inform clients of the current, complete set of responsive
// devices. Clients should only need to store the list from the most recent
// event. May be fired in response to multiple circumstances:
//
// (1) The DIAL service refreshed its device list through periodic polling.
// (2) A client invoked discoverNow().
// (3) An event happened that should invalidate the device list
// (e.g., a network interface went offline), in which case it is fired
// with an empty array.
static void onDeviceList(DialDevice[] result);
// Event fired to inform clients on errors during device discovery.
static void onError(DialError error);
};
};
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