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Unified Diff: net/dns/dns_config_service.h

Issue 992733002: Remove //net (except for Android test stuff) and sdch (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: Created 5 years, 9 months ago
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Index: net/dns/dns_config_service.h
diff --git a/net/dns/dns_config_service.h b/net/dns/dns_config_service.h
deleted file mode 100644
index bfb57850bb7a1b655fcbee6749225ff423eee3dd..0000000000000000000000000000000000000000
--- a/net/dns/dns_config_service.h
+++ /dev/null
@@ -1,216 +0,0 @@
-// 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.
-
-#ifndef NET_DNS_DNS_CONFIG_SERVICE_H_
-#define NET_DNS_DNS_CONFIG_SERVICE_H_
-
-#include <map>
-#include <string>
-#include <vector>
-
-#include "base/gtest_prod_util.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/memory/scoped_vector.h"
-#include "base/threading/non_thread_safe.h"
-#include "base/time/time.h"
-#include "base/timer/timer.h"
-// Needed on shared build with MSVS2010 to avoid multiple definitions of
-// std::vector<IPEndPoint>.
-#include "net/base/address_list.h"
-#include "net/base/ip_endpoint.h" // win requires size of IPEndPoint
-#include "net/base/net_export.h"
-#include "net/dns/dns_hosts.h"
-
-namespace base {
-class Value;
-}
-
-namespace net {
-
-// Always use 1 second timeout (followed by binary exponential backoff).
-// TODO(szym): Remove code which reads timeout from system.
-const unsigned kDnsTimeoutSeconds = 1;
-
-// Classifies nameserver address lists for histograms.
-class NET_EXPORT_PRIVATE NameServerClassifier {
- public:
- // This is used in a histogram (AsyncDNS.NameServersType); add new entries
- // right before MAX_VALUE.
- enum NameServersType {
- NAME_SERVERS_TYPE_NONE,
- NAME_SERVERS_TYPE_GOOGLE_PUBLIC_DNS,
- NAME_SERVERS_TYPE_PRIVATE,
- NAME_SERVERS_TYPE_PUBLIC,
- NAME_SERVERS_TYPE_MIXED,
- NAME_SERVERS_TYPE_MAX_VALUE
- };
-
- NameServerClassifier();
- ~NameServerClassifier();
-
- NameServersType GetNameServersType(
- const std::vector<net::IPEndPoint>& nameservers) const;
-
- private:
- struct NameServerTypeRule;
-
- void AddRule(const char* pattern_string, NameServersType type);
- NameServersType GetNameServerType(const IPAddressNumber& address) const;
- static NameServersType MergeNameServersTypes(NameServersType a,
- NameServersType b);
-
- ScopedVector<NameServerTypeRule> rules_;
-};
-
-// DnsConfig stores configuration of the system resolver.
-struct NET_EXPORT_PRIVATE DnsConfig {
- DnsConfig();
- virtual ~DnsConfig();
-
- bool Equals(const DnsConfig& d) const;
-
- bool EqualsIgnoreHosts(const DnsConfig& d) const;
-
- void CopyIgnoreHosts(const DnsConfig& src);
-
- // Returns a Value representation of |this|. Caller takes ownership of the
- // returned Value. For performance reasons, the Value only contains the
- // number of hosts rather than the full list.
- base::Value* ToValue() const;
-
- bool IsValid() const {
- return !nameservers.empty();
- }
-
- // List of name server addresses.
- std::vector<IPEndPoint> nameservers;
- // Suffix search list; used on first lookup when number of dots in given name
- // is less than |ndots|.
- std::vector<std::string> search;
-
- DnsHosts hosts;
-
- // True if there are options set in the system configuration that are not yet
- // supported by DnsClient.
- bool unhandled_options;
-
- // AppendToMultiLabelName: is suffix search performed for multi-label names?
- // True, except on Windows where it can be configured.
- bool append_to_multi_label_name;
-
- // Indicates that source port randomization is required. This uses additional
- // resources on some platforms.
- bool randomize_ports;
-
- // Resolver options; see man resolv.conf.
-
- // Minimum number of dots before global resolution precedes |search|.
- int ndots;
- // Time between retransmissions, see res_state.retrans.
- base::TimeDelta timeout;
- // Maximum number of attempts, see res_state.retry.
- int attempts;
- // Round robin entries in |nameservers| for subsequent requests.
- bool rotate;
- // Enable EDNS0 extensions.
- bool edns0;
-
- // Indicates system configuration uses local IPv6 connectivity, e.g.,
- // DirectAccess. This is exposed for HostResolver to skip IPv6 probes,
- // as it may cause them to return incorrect results.
- bool use_local_ipv6;
-};
-
-// Service for reading system DNS settings, on demand or when signalled by
-// internal watchers and NetworkChangeNotifier.
-class NET_EXPORT_PRIVATE DnsConfigService
- : NON_EXPORTED_BASE(public base::NonThreadSafe) {
- public:
- // Callback interface for the client, called on the same thread as
- // ReadConfig() and WatchConfig().
- typedef base::Callback<void(const DnsConfig& config)> CallbackType;
-
- // Creates the platform-specific DnsConfigService.
- static scoped_ptr<DnsConfigService> CreateSystemService();
-
- DnsConfigService();
- virtual ~DnsConfigService();
-
- // Attempts to read the configuration. Will run |callback| when succeeded.
- // Can be called at most once.
- void ReadConfig(const CallbackType& callback);
-
- // Registers systems watchers. Will attempt to read config after watch starts,
- // but only if watchers started successfully. Will run |callback| iff config
- // changes from last call or has to be withdrawn. Can be called at most once.
- // Might require MessageLoopForIO.
- void WatchConfig(const CallbackType& callback);
-
- protected:
- enum WatchStatus {
- DNS_CONFIG_WATCH_STARTED = 0,
- DNS_CONFIG_WATCH_FAILED_TO_START_CONFIG,
- DNS_CONFIG_WATCH_FAILED_TO_START_HOSTS,
- DNS_CONFIG_WATCH_FAILED_CONFIG,
- DNS_CONFIG_WATCH_FAILED_HOSTS,
- DNS_CONFIG_WATCH_MAX,
- };
-
- // Immediately attempts to read the current configuration.
- virtual void ReadNow() = 0;
- // Registers system watchers. Returns true iff succeeds.
- virtual bool StartWatching() = 0;
-
- // Called when the current config (except hosts) has changed.
- void InvalidateConfig();
- // Called when the current hosts have changed.
- void InvalidateHosts();
-
- // Called with new config. |config|.hosts is ignored.
- void OnConfigRead(const DnsConfig& config);
- // Called with new hosts. Rest of the config is assumed unchanged.
- void OnHostsRead(const DnsHosts& hosts);
-
- void set_watch_failed(bool value) { watch_failed_ = value; }
-
- private:
- // The timer counts from the last Invalidate* until complete config is read.
- void StartTimer();
- void OnTimeout();
- // Called when the config becomes complete. Stops the timer.
- void OnCompleteConfig();
-
- CallbackType callback_;
-
- DnsConfig dns_config_;
-
- // True if any of the necessary watchers failed. In that case, the service
- // will communicate changes via OnTimeout, but will only send empty DnsConfig.
- bool watch_failed_;
- // True after On*Read, before Invalidate*. Tells if the config is complete.
- bool have_config_;
- bool have_hosts_;
- // True if receiver needs to be updated when the config becomes complete.
- bool need_update_;
- // True if the last config sent was empty (instead of |dns_config_|).
- // Set when |timer_| expires.
- bool last_sent_empty_;
-
- // Initialized and updated on Invalidate* call.
- base::TimeTicks last_invalidate_config_time_;
- base::TimeTicks last_invalidate_hosts_time_;
- // Initialized and updated when |timer_| expires.
- base::TimeTicks last_sent_empty_time_;
-
- // Started in Invalidate*, cleared in On*Read.
- base::OneShotTimer<DnsConfigService> timer_;
-
- NameServerClassifier classifier_;
-
- DISALLOW_COPY_AND_ASSIGN(DnsConfigService);
-};
-
-} // namespace net
-
-#endif // NET_DNS_DNS_CONFIG_SERVICE_H_
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