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// Copyright 2016 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 HEADLESS_PUBLIC_UTIL_URL_FETCHER_H_
#define HEADLESS_PUBLIC_UTIL_URL_FETCHER_H_
#include <stddef.h>
#include <string>
#include <vector>
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "headless/public/headless_export.h"
#include "net/base/net_errors.h"
#include "url/gurl.h"
namespace net {
class HttpRequestHeaders;
class HttpResponseHeaders;
} // namespace net
namespace headless {
// An interface for fetching URLs. Note these are only intended to be used once.
class HEADLESS_EXPORT URLFetcher {
public:
URLFetcher() {}
virtual ~URLFetcher() {}
// Interface for reporting the fetch result.
class HEADLESS_EXPORT ResultListener {
public:
ResultListener() {}
// Informs the listener that the fetch failed.
virtual void OnFetchStartError(net::Error error) = 0;
// Informs the listener that the fetch succeeded and returns the HTTP
// headers and the body. NOTE |body| must be owned by the caller and remain
// valid until the fetcher is destroyed,
virtual void OnFetchComplete(
const GURL& final_url,
scoped_refptr<net::HttpResponseHeaders> response_headers,
const char* body,
size_t body_size) = 0;
// Helper function which extracts the headers from |response_data| and calls
// OnFetchComplete.
void OnFetchCompleteExtractHeaders(const GURL& final_url,
const char* response_data,
size_t response_data_size);
protected:
virtual ~ResultListener() {}
private:
DISALLOW_COPY_AND_ASSIGN(ResultListener);
};
virtual void StartFetch(const GURL& url,
const std::string& method,
const std::string& post_data,
const net::HttpRequestHeaders& request_headers,
ResultListener* result_listener) = 0;
private:
DISALLOW_COPY_AND_ASSIGN(URLFetcher);
};
} // namespace headless
#endif // HEADLESS_PUBLIC_UTIL_URL_FETCHER_H_
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