// Copyright (c) 2012 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/base/mapped_host_resolver.h"

#include "base/string_tokenizer.h"
#include "base/string_util.h"
#include "net/base/host_port_pair.h"
#include "net/base/net_errors.h"
#include "net/base/net_util.h"

namespace net {

MappedHostResolver::MappedHostResolver(scoped_ptr<HostResolver> impl)
    : impl_(impl.Pass()) {
}

MappedHostResolver::~MappedHostResolver() {
}

int MappedHostResolver::Resolve(const RequestInfo& info,
                                AddressList* addresses,
                                const CompletionCallback& callback,
                                RequestHandle* out_req,
                                const BoundNetLog& net_log) {
  return impl_->Resolve(ApplyRules(info), addresses, callback, out_req,
                        net_log);
}

int MappedHostResolver::ResolveFromCache(const RequestInfo& info,
                                         AddressList* addresses,
                                         const BoundNetLog& net_log) {
  return impl_->ResolveFromCache(ApplyRules(info), addresses, net_log);
}

void MappedHostResolver::CancelRequest(RequestHandle req) {
  impl_->CancelRequest(req);
}

void MappedHostResolver::ProbeIPv6Support() {
  impl_->ProbeIPv6Support();
}

HostCache* MappedHostResolver::GetHostCache() {
  return impl_->GetHostCache();
}

HostResolver::RequestInfo MappedHostResolver::ApplyRules(
    const RequestInfo& info) const {
  RequestInfo modified_info = info;
  HostPortPair host_port(info.host_port_pair());
  if (rules_.RewriteHost(&host_port))
    modified_info.set_host_port_pair(host_port);
  return modified_info;
}

}  // namespace net