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      1 // Copyright 2014 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef EXTENSIONS_BROWSER_API_DNS_DNS_API_H_
      6 #define EXTENSIONS_BROWSER_API_DNS_DNS_API_H_
      7 
      8 #include <string>
      9 
     10 #include "extensions/browser/extension_function.h"
     11 #include "net/base/address_list.h"
     12 #include "net/base/completion_callback.h"
     13 #include "net/dns/host_resolver.h"
     14 
     15 namespace content {
     16 class ResourceContext;
     17 }
     18 
     19 namespace extensions {
     20 
     21 class DnsResolveFunction : public AsyncExtensionFunction {
     22  public:
     23   DECLARE_EXTENSION_FUNCTION("dns.resolve", DNS_RESOLVE)
     24 
     25   DnsResolveFunction();
     26 
     27  protected:
     28   virtual ~DnsResolveFunction();
     29 
     30   // ExtensionFunction:
     31   virtual bool RunAsync() OVERRIDE;
     32 
     33   void WorkOnIOThread();
     34   void RespondOnUIThread();
     35 
     36  private:
     37   void OnLookupFinished(int result);
     38 
     39   std::string hostname_;
     40 
     41   // Not owned.
     42   content::ResourceContext* resource_context_;
     43 
     44   bool response_;  // The value sent in SendResponse().
     45 
     46   scoped_ptr<net::HostResolver::RequestHandle> request_handle_;
     47   scoped_ptr<net::AddressList> addresses_;
     48 };
     49 
     50 }  // namespace extensions
     51 
     52 #endif  // EXTENSIONS_BROWSER_API_DNS_DNS_API_H_
     53