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// 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.
// This class is useful for building a simple URLRequestContext. Most creators
// of new URLRequestContexts should use this helper class to construct it. Call
// any configuration params, and when done, invoke Build() to construct the
// URLRequestContext. This URLRequestContext will own all its own storage.
//
// URLRequestContextBuilder and its associated params classes are initially
// populated with "sane" default values. Read through the comments to figure out
// what these are.
#ifndef NET_URL_REQUEST_URL_REQUEST_CONTEXT_BUILDER_H_
#define NET_URL_REQUEST_URL_REQUEST_CONTEXT_BUILDER_H_
#pragma once
#include <string>
#include "base/basictypes.h"
#include "base/file_path.h"
#include "base/memory/ref_counted.h"
#include "net/base/net_export.h"
namespace net {
class URLRequestContext;
class NET_EXPORT URLRequestContextBuilder {
public:
struct NET_EXPORT HostResolverParams {
HostResolverParams();
~HostResolverParams();
// The limit on the number of parallel host resolutions.
size_t parallelism;
// When the host resolution is taking too long, we'll retry this many times,
// in a backing off manner.
size_t retry_attempts;
};
struct NET_EXPORT HttpCacheParams {
enum Type {
IN_MEMORY,
DISK,
};
HttpCacheParams();
~HttpCacheParams();
// The type of HTTP cache. Default is DISK.
Type type;
// The max size of the cache in bytes. Default is algorithmically determined
// based off available disk space.
int max_size;
// The cache path (when type is DISK).
FilePath path;
};
URLRequestContextBuilder();
~URLRequestContextBuilder();
// Call this function to specify a hard-coded User-Agent for all requests that
// don't have a User-Agent already set.
void set_user_agent(const std::string& user_agent) {
user_agent_ = user_agent;
}
// Allows for overriding the default HostResolver params.
void set_host_resolver_params(
const HostResolverParams& host_resolver_params) {
host_resolver_params_ = host_resolver_params;
}
// By default it's disabled.
void set_ftp_enabled(bool enable) {
ftp_enabled_ = enable;
}
// By default HttpCache is enabled with a default constructed HttpCacheParams.
void EnableHttpCache(const HttpCacheParams& params);
void DisableHttpCache();
scoped_refptr<URLRequestContext> Build();
private:
std::string user_agent_;
bool ftp_enabled_;
HostResolverParams host_resolver_params_;
bool http_cache_enabled_;
HttpCacheParams http_cache_params_;
DISALLOW_COPY_AND_ASSIGN(URLRequestContextBuilder);
};
} // namespace net
#endif // NET_URL_REQUEST_URL_REQUEST_CONTEXT_BUILDER_H_
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