netwerk/base/TCPFastOpen.h
author Edwin Gao <egao@mozilla.com>
Wed, 13 Mar 2019 19:47:25 +0000
changeset 463893 15c16889e3b7f6e871a518b5f3254459ed5e0213
parent 448947 6f3709b3878117466168c40affa7bca0b60cf75b
permissions -rw-r--r--
Bug 1531590, 1531598, 1534811, 1336075, 1531571, 1531572, 1531572, 1531574, 1534855, 1534857, 1535082 - skip tests in mochitest-dev-tools and mochitest-browser-chrome suites for windows10-aarch64 r=jmaher Bug 1531598 - disable browser_markup_copy_image_data.js Bug 1531598 - disable browser_markup_links_04.js Bug 1531598 - disable browser_inspector_menu-01-sensitivity.js Bug 1534811 - disable accessible/tests/browser/general Bug 1336075 - disable browser_largeAllocation_non_win32.js Bug 1531571 - disable browser_jsterm_context_menu_labels.js Bug 1531572 - disable browser_jsterm_helper_dollar_x.js Bug 1531573 - disable browser_jsterm_no_input_and_tab_key_pressed.js Bug 1531574 - disable browser_jsterm_syntax_highlight_output.js Bug 1534855 - disable accessible/tests/browser/ Bug 1534857 - disable browser_ext_slow_script.js Bug 1535082 - disable browser_jsterm_helper_dollar_dollar.js Differential Revision: https://phabricator.services.mozilla.com/D23369

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/. */

#ifndef TCPFASTOPEN_H__
#define TCPFASTOPEN_H__

/**
 * This is an abstract class for TCP Fast Open - TFO (RFC7413).
 * It is not always safe to use Fast Open. It can be use for requests that
 * are replayable.
 * Middle boxes can block or reset connections that use TFO, therefore a
 * backup connection will be prepared with a delay.
 * In case of blocking such a connection tcp socket will terminate only after
 * a timeout, therefore a backup connection is needed. If connection is refuse
 * the same socketTransport will retry.
 *
 * This is implemented by nsHalfopenSocket.
 **/

namespace mozilla {
namespace net {

class TCPFastOpen {
 public:
  // Check if we have a transaction that is safe to be used with TFO.
  // Connections over TLS are always safe and some http requests (e.g. GET).
  virtual bool FastOpenEnabled() = 0;
  // To use TFO we need to have a transaction prepared, e.g. also have
  // nsHttpConnection ready. This functions is call by nsSocketTransport to
  // setup a connection.
  virtual nsresult StartFastOpen() = 0;
  // Inform nsHalfopenSocket whether a connection using TFO succeeded or not.
  // This will cancel the backup connection and in case of a failure rewind
  // the transaction.
  virtual void SetFastOpenConnected(nsresult error, bool aWillRetry) = 0;
  virtual void FastOpenNotSupported() = 0;
  virtual void SetFastOpenStatus(uint8_t tfoStatus) = 0;
};

}  // namespace net
}  // namespace mozilla

#endif  // TCPFASTOPEN_H__