gecko/content/base/public/nsIWebSocket.idl

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 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
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 * 1.1 (the "License"); you may not use this file except in compliance with
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 * for the specific language governing rights and limitations under the
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 *
 * The Original Code is mozilla.org code.
 *
 * The Initial Developer of the Original Code is
 * Wellington Fernando de Macedo.
 * Portions created by the Initial Developer are Copyright (C) 2009
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *    Wellington Fernando de Macedo <wfernandom2004@gmail.com> (original author)
 *
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#include "nsISupports.idl"

interface nsIDOMEventListener;
interface nsIPrincipal;
interface nsIScriptContext;
interface nsPIDOMWindow;

/**
 * The nsIWebSocket interface enables Web applications to maintain
 * bidirectional communications with server-side processes as described in:
 *
 * http://dev.w3.org/html5/websockets/
 *
 */
[scriptable, uuid(4403cd57-07fc-477f-a062-d6ba7dd0781b)]
interface nsIWebSocket : nsISupports
{
  readonly attribute DOMString url;

  //ready state
  const unsigned short CONNECTING = 0;
  const unsigned short OPEN = 1;
  const unsigned short CLOSING = 2;
  const unsigned short CLOSED = 3;
  readonly attribute unsigned short readyState;

  readonly attribute unsigned long bufferedAmount;

  // event handler attributes
  attribute nsIDOMEventListener onopen;
  attribute nsIDOMEventListener onmessage;
  attribute nsIDOMEventListener onerror;
  attribute nsIDOMEventListener onclose;

  /**
   * Transmits data using the connection.
   *
   * @param data The data to be transmited.
   * @return if the connection is still established (and the data was queued or
   *         sent successfully).
   */
  boolean send(in DOMString data);

  /**
   * Closes the Web Socket connection or connection attempt, if any.
   * If the connection is already closed, it does nothing.
   */
  void close();

  /**
   * Initialize the object for use from C++ code with the principal, script
   * context, and owner window that should be used.
   *
   * @param principal The principal to use for the request. This must not be
   *                  null.
   * @param scriptContext The script context to use for the request. May be
   *                      null.
   * @param ownerWindow The associated window for the request. May be null.
   * @param url The url for opening the socket. This must not be empty, and
   *            must have an absolute url, using either the ws or wss schemes.
   * @param protocol  Specifies a sub-protocol that the server must support for
   *                  the connection to be successful. If empty, no protocol is
   *                  specified.
   */
  [noscript] void init(in nsIPrincipal principal,
                       in nsIScriptContext scriptContext,
                       in nsPIDOMWindow ownerWindow,
                       in DOMString url,
                       in DOMString protocol);
};