Extensions: Move cast_channel and hid APIs to extensions/.

chrome/common/extensions/api/cast_channel.idl

-// Copyright 2013 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.
-
-// API for communicating with a Google Cast device over an authenticated
-// channel.
-namespace cast.channel {
-
-  // The state of the channel.
-  enum ReadyState {
-    // The channel is connecting.
-    connecting,
-    // The channel is open and available for messaging.
-    open,
-    // The channel is closing.
-    closing,
-    // The channel is closed.
-    closed
-  };
-
-  // Error conditions that the channel may encounter.  All error conditions
-  // are terminal.  When an error condition is encountered the API will:
-  // (1) Transition the channel to readyState == 'closed'.
-  // (2) Set ChannelInfo.lastError to the error condition.
-  // (3) Fire an onError event with the error condition.
-  // (4) Fire an onClose event.
-  enum ChannelError {
-    // cast.channel.send() was called when ChannelInfo.readyState != 'open'.
-    channel_not_open,
-    // Authentication was requested and the receiver could not be
-    // authenticated (invalid signature, invalid handhake, TLS error, etc.)
-    authentication_error,
-    // A new channel could not be created for reasons unrelated to
-    // authentication (e.g., there is already an open channel to the same URL).
-    connect_error,
-    // There was an error writing or reading from the underlying socket.
-    socket_error,
-    // A transport level occurred (like an unparseable message).
-    transport_error,
-    // The client attempted to send an unsupported message type through the
-    // channel.
-    invalid_message,
-    // An invalid channel id was passed.
-    invalid_channel_id,
-    // Unspecified error.
-    unknown
-  };
-
-  // Authentication methods that may be required to connect to a Cast receiver.
-  enum ChannelAuthType {
-    // SSL over TCP.
-    ssl,
-    // SSL over TCP with challenge and receiver signature verification.
-    ssl_verified
-  };
-
-  // Describes the information needed to connect to a Cast receiver.
-  // This replaces the prior use of cast:// and casts:// URLs.
-  dictionary ConnectInfo {
-    // The IPV4 address of the Cast receiver, e.g. '198.1.0.2'.
-    // TODO(mfoltz): Investigate whether IPV6 addresses "just work."
-    DOMString ipAddress;
-
-    // The port number to connect to, 0-65535.
-    long port;
-
-    // The authentication method required for the channel.
-    ChannelAuthType auth;
-  };
-
-  // Describes the state of a channel to a Cast receiver.
-  dictionary ChannelInfo {
-    // Id for the channel.
-    long channelId;
-
-    // DEPRECATED: The URL to the receiver.  This field will be removed in a
-    // future release.
-    DOMString url;
-
-    // Connection information that was used to establish the channel to the
-    // receiver.
-    ConnectInfo connectInfo;
-
-    // The current state of the channel.
-    ReadyState readyState;
-      
-    // If set, the last error condition encountered by the channel.
-    ChannelError? errorState;
-  };
-
-  // Describes a message sent or received over the channel.  Currently only
-  // string messages are supported, although ArrayBuffer and Blob types may be
-  // supported in the future.
-  dictionary MessageInfo {
-    // The message namespace.  A namespace is a URN of the form
-    // urn:cast-x:<namespace> that is used to interpret and route Cast messages.
-    DOMString namespace_;
-
-    // source and destination ids identify the origin and destination of the
-    // message.  They are used to route messages between endpoints that share a
-    // device-to-device channel.
-    //
-    // For messages between applications:
-    //   - The sender application id is a unique identifier generated on behalf
-    //     of the sender application.
-    //   - The receiver id is always the the session id for the application.
-    //
-    // For messages to or from the sender or receiver platform, the special ids
-    // 'sender-0' and 'receiver-0' can be used.
-    // 
-    // For messages intended for all endpoints using a given channel, the
-    // wildcard destination_id '*' can be used.
-    DOMString sourceId;
-    DOMString destinationId;
-
-    // The content of the message.  Must be either a string or an ArrayBuffer.
-    any data;
-  };
-
-  // Callback holding the result of a channel operation.
-  callback ChannelInfoCallback = void (ChannelInfo result);
-
-  interface Functions {
-    // Opens a new channel to the Cast receiver specified by connectInfo.  Only
-    // one channel may be connected to same receiver from the same extension at
-    // a time.  If the open request is successful, the callback will be invoked
-    // with a ChannelInfo with readyState == 'connecting'.  If unsuccessful, the
-    // callback will be invoked with a ChannelInfo with channel.readyState ==
-    // 'closed' and channel.errorState will be set to the error condition.
-    //
-    // TODO(mfoltz): Convert 'any' to ConnectInfo once all clients are updated
-    // to not send URLs.
-    static void open(any connectInfo,
-                     ChannelInfoCallback callback);
-
-    // Sends a message on the channel and invokes callback with the resulting
-    // channel status.  The channel must be in readyState == 'open'.  If
-    // unsuccessful, channel.readyState will be set to 'closed',
-    // channel.errorState will be set to the error condition.
-    static void send(ChannelInfo channel,
-                     MessageInfo message,
-                     ChannelInfoCallback callback);
-
-    // Requests that the channel be closed and invokes callback with the
-    // resulting channel status.  The channel must be in readyState == 'open' or
-    // 'connecting'.  If successful, onClose will be fired with readyState ==
-    // 'closed'.  If unsuccessful, channel.readyState will be set to 'closed',
-    // and channel.errorState will be set to the error condition.
-    static void close(ChannelInfo channel,
-                      ChannelInfoCallback callback);
-  };
-
-  // Events on the channel.
-  interface Events {
-    // Fired when a message is received on an open channel.
-    static void onMessage(ChannelInfo channel,
-                          MessageInfo message);
-
-    // Fired when an error occurs as a result of a channel method or a network
-    // event.
-    static void onError(ChannelInfo channel);
-  };
-};