net/http/http_proxy_utils.cc

// Copyright (c) 2010 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.

#include "net/http/http_proxy_utils.h"

#include "base/stringprintf.h"
#include "googleurl/src/gurl.h"
#include "net/base/host_port_pair.h"
#include "net/base/net_util.h"
#include "net/http/http_request_info.h"

namespace net {

void BuildTunnelRequest(
    const HttpRequestInfo& request_info,
    const HttpRequestHeaders& auth_headers,
    const HostPortPair& endpoint,
    std::string* request_line,
    HttpRequestHeaders* request_headers) {
  // RFC 2616 Section 9 says the Host request-header field MUST accompany all
  // HTTP/1.1 requests.  Add "Proxy-Connection: keep-alive" for compat with
  // HTTP/1.0 proxies such as Squid (required for NTLM authentication).
  *request_line = StringPrintf(
      "CONNECT %s HTTP/1.1\r\n", endpoint.ToString().c_str());
  request_headers->SetHeader(HttpRequestHeaders::kHost,
                             GetHostAndOptionalPort(request_info.url));
  request_headers->SetHeader(HttpRequestHeaders::kProxyConnection,
                             "keep-alive");

  std::string user_agent;
  if (request_info.extra_headers.GetHeader(HttpRequestHeaders::kUserAgent,
                                            &user_agent))
    request_headers->SetHeader(HttpRequestHeaders::kUserAgent, user_agent);

  request_headers->MergeFrom(auth_headers);
}

}  // namespace net