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// Copyright 2014 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_BASE_PROXY_DELEGATE_H_
#define NET_BASE_PROXY_DELEGATE_H_
#include "base/macros.h"
#include "net/base/net_export.h"
class GURL;
namespace net {
class HttpRequestHeaders;
class HttpResponseHeaders;
class HostPortPair;
class ProxyInfo;
class ProxyServer;
class ProxyService;
class URLRequest;
// Delegate for setting up a connection.
class NET_EXPORT ProxyDelegate {
public:
ProxyDelegate() {
}
virtual ~ProxyDelegate() {
}
// Called as the proxy is being resolved for |url|. Allows the delegate to
// override the proxy resolution decision made by ProxyService. The delegate
// may override the decision by modifying the ProxyInfo |result|.
virtual void OnResolveProxy(const GURL& url,
int load_flags,
const ProxyService& proxy_service,
ProxyInfo* result) = 0;
// Called when use of |bad_proxy| fails due to |net_error|. |net_error| is
// the network error encountered, if any, and OK if the fallback was
// for a reason other than a network error (e.g. the proxy service was
// explicitly directed to skip a proxy).
virtual void OnFallback(const ProxyServer& bad_proxy,
int net_error) = 0;
// Called after a proxy connection. Allows the delegate to read/write
// |headers| before they get sent out. |headers| is valid only until
// OnCompleted or OnURLRequestDestroyed is called for this request.
virtual void OnBeforeSendHeaders(URLRequest* request,
const ProxyInfo& proxy_info,
HttpRequestHeaders* headers) = 0;
// Called immediately before a proxy tunnel request is sent.
// Provides the embedder an opportunity to add extra request headers.
virtual void OnBeforeTunnelRequest(const HostPortPair& proxy_server,
HttpRequestHeaders* extra_headers) = 0;
// Called when the connect attempt to a CONNECT proxy has completed.
virtual void OnTunnelConnectCompleted(const HostPortPair& endpoint,
const HostPortPair& proxy_server,
int net_error) = 0;
// Called after the response headers for the tunnel request are received.
virtual void OnTunnelHeadersReceived(
const HostPortPair& origin,
const HostPortPair& proxy_server,
const HttpResponseHeaders& response_headers) = 0;
private:
DISALLOW_COPY_AND_ASSIGN(ProxyDelegate);
};
}
#endif // NET_BASE_PROXY_DELEGATE_H_
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