blob: e0d9a00fca698819acfcf7cd62ed98dee6914041 [file] [log] [blame]
// 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.
#include "base/callback.h"
#include "base/macros.h"
namespace network {
class SharedURLLoaderFactory;
class SimpleURLLoader;
} // namespace network
namespace remoting {
// This is the default prefix that is prepended to the kTalkGadgetUrl to form
// the complete talkgadget URL used by the host. Policy settings allow admins
// to change the prefix that is used.
extern const char kDefaultHostTalkGadgetPrefix[];
class DnsBlackholeChecker {
scoped_refptr<network::SharedURLLoaderFactory> url_loader_factory,
std::string talkgadget_prefix);
// Initiates a check the verify that the host talkgadget has not been "DNS
// blackholed" to prevent connections. If this is called again before the
// callback has been called, then the second call is ignored.
void CheckForDnsBlackhole(const base::Callback<void(bool)>& callback);
void OnURLLoadComplete(std::unique_ptr<std::string> response_body);
// URL loader factory used to use to create the URL loader.
scoped_refptr<network::SharedURLLoaderFactory> url_loader_factory_;
// URL loader used to verify access to the host talkgadget.
std::unique_ptr<network::SimpleURLLoader> url_loader_;
// The string pre-pended to '' to create the full
// talkgadget domain name for the host.
std::string talkgadget_prefix_;
// Called with the results of the connection check.
base::Callback<void(bool)> callback_;
} // namespace remoting