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93 lines
3.3 KiB
C++
93 lines
3.3 KiB
C++
// Copyright 2014 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef NET_BASE_PROXY_DELEGATE_H_
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#define NET_BASE_PROXY_DELEGATE_H_
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#include <string>
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#include "base/macros.h"
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#include "net/base/net_export.h"
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#include "net/proxy/proxy_retry_info.h"
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class GURL;
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namespace net {
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class HttpRequestHeaders;
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class HttpResponseHeaders;
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class HostPortPair;
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class ProxyInfo;
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class ProxyServer;
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class ProxyService;
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// Delegate for setting up a connection.
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class NET_EXPORT ProxyDelegate {
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public:
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ProxyDelegate() {
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}
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virtual ~ProxyDelegate() {
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}
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// Called as the proxy is being resolved for |url| for a |method| request.
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// The caller may pass an empty string to get method agnostic resoulution.
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// Allows the delegate to override the proxy resolution decision made by
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// ProxyService. The delegate may override the decision by modifying the
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// ProxyInfo |result|.
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virtual void OnResolveProxy(const GURL& url,
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const std::string& method,
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const ProxyRetryInfoMap& proxy_retry_info,
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ProxyInfo* result) = 0;
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// Called when use of |bad_proxy| fails due to |net_error|. |net_error| is
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// the network error encountered, if any, and OK if the fallback was
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// for a reason other than a network error (e.g. the proxy service was
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// explicitly directed to skip a proxy).
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virtual void OnFallback(const ProxyServer& bad_proxy,
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int net_error) = 0;
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// Called immediately before a proxy tunnel request is sent.
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// Provides the embedder an opportunity to add extra request headers.
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virtual void OnBeforeTunnelRequest(const HostPortPair& proxy_server,
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HttpRequestHeaders* extra_headers) = 0;
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// Called when the connect attempt to a CONNECT proxy has completed.
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virtual void OnTunnelConnectCompleted(const HostPortPair& endpoint,
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const HostPortPair& proxy_server,
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int net_error) = 0;
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// Called after the response headers for the tunnel request are received.
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virtual void OnTunnelHeadersReceived(
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const HostPortPair& origin,
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const HostPortPair& proxy_server,
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const HttpResponseHeaders& response_headers) = 0;
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// Returns true if |proxy_server| is a trusted SPDY/HTTP2 proxy that is
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// allowed to push cross-origin resources.
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virtual bool IsTrustedSpdyProxy(const net::ProxyServer& proxy_server) = 0;
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// Called after the proxy is resolved but before the connection is
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// established. |resolved_proxy_server| is the proxy server resolved by the
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// proxy service for fetching |url|. Sets |alternative_proxy_server| to an
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// alternative proxy server, if one is available to fetch |url|.
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// |alternative_proxy_server| is owned by the caller, and is guaranteed to be
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// non-null.
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virtual void GetAlternativeProxy(
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const GURL& url,
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const ProxyServer& resolved_proxy_server,
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ProxyServer* alternative_proxy_server) const = 0;
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// Notifies the ProxyDelegate that |alternative_proxy_server| is broken.
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virtual void OnAlternativeProxyBroken(
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const ProxyServer& alternative_proxy_server) = 0;
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private:
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DISALLOW_COPY_AND_ASSIGN(ProxyDelegate);
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};
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} // namespace net
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#endif // NET_BASE_PROXY_DELEGATE_H_
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