components/dns_prefetch/common/prefetch_common.h

   1 // Copyright (c) 2006-2008 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 COMPONENTS_DNS_PREFETCH_COMMON_PREFETCH_COMMON_H_
   6 #define COMPONENTS_DNS_PREFETCH_COMMON_PREFETCH_COMMON_H_
   7
   8 #include <string>
   9 #include <vector>
  10
  11 #include "url/gurl.h"
  12
  13 namespace dns_prefetch {
  14
  15 // IPC messages are passed from the renderer to the browser in the form of
  16 // Namelist instances.
  17 // Each element of this vector is a hostname that needs to be looked up.
  18 // The hostnames should never be empty strings.
  19 typedef std::vector<std::string> NameList;
  20 // TODO(jar): We still need to switch to passing scheme/host/port in UrlList,
  21 // instead of NameList, from renderer (where content of pages are scanned for
  22 // links) to browser (where we perform predictive actions).
  23 typedef std::vector<GURL> UrlList;
  24
  25 struct LookupRequest {
  26   LookupRequest();
  27   ~LookupRequest();
  28
  29   NameList hostname_list;
  30 };
  31
  32 // The maximum number of hostnames submitted to the browser DNS resolver per
  33 // IPC call.
  34 extern const size_t kMaxDnsHostnamesPerRequest;
  35
  36 // The maximum length for a given DNS hostname to resolve.
  37 extern const size_t kMaxDnsHostnameLength;
  38
  39 }
  40
  41 #endif  // COMPONENTS_DNS_PREFETCH_COMMON_PREFETCH_COMMON_H_