chromium/net/base/proxy_chain.h

// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef NET_BASE_PROXY_CHAIN_H_
#define NET_BASE_PROXY_CHAIN_H_

#include <stdint.h>

#include <iosfwd>
#include <optional>
#include <string>
#include <string_view>
#include <tuple>
#include <vector>

#include "net/base/host_port_pair.h"
#include "net/base/net_export.h"
#include "net/base/proxy_server.h"

namespace base {
class Pickle;
class PickleIterator;
}  // namespace base

namespace net {

// ProxyChain represents a chain of ProxyServers. A chain with multiple proxy
// servers means that a single connection will go through all of the proxies in
// order, using a tunnel through the first proxy to connect to the second, etc.
// A "direct" connection is a chain of length zero.
class NET_EXPORT ProxyChain { … };

NET_EXPORT_PRIVATE std::ostream& operator<<(std::ostream& os,
                                            const ProxyChain& proxy_chain);

// A HostPortProxyPair holds a host/port destination and a ProxyChain describing
// how that destination is reached.
HostPortProxyPair;

}  // namespace net

#endif  // NET_BASE_PROXY_CHAIN_H_