Fill in the current host name in the Mojo host resolver service when requesting our own IP address.

net/dns/mojo_host_resolver_impl.cc

 // Copyright 2015 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/dns/mojo_host_resolver_impl.h"
 
 #include <utility>
 
 #include "base/stl_util.h"
 #include "net/base/address_list.h"
 #include "net/base/net_errors.h"
+#include "net/base/network_interfaces.h"
 #include "net/dns/host_resolver.h"
 #include "net/dns/mojo_host_type_converters.h"
 
 namespace net {
 
 // Handles host resolution for a single request and sends a response when done.
 // Also detects connection errors for HostResolverRequestClient and cancels the
 // outstanding resolve request. Owned by MojoHostResolverImpl.
 class MojoHostResolverImpl::Job {
  public:
@@ skipping 30 matching lines @@
 
 MojoHostResolverImpl::~MojoHostResolverImpl() {
   DCHECK(thread_checker_.CalledOnValidThread());
   STLDeleteElements(&pending_jobs_);
 }
 
 void MojoHostResolverImpl::Resolve(
     interfaces::HostResolverRequestInfoPtr request_info,
     interfaces::HostResolverRequestClientPtr client) {
   DCHECK(thread_checker_.CalledOnValidThread());
-  Job* job = new Job(this, resolver_,
-                     request_info->To<net::HostResolver::RequestInfo>(),
-                     net_log_, std::move(client));
+  HostResolver::RequestInfo host_request_info =
+      request_info->To<net::HostResolver::RequestInfo>();
+  if (host_request_info.is_my_ip_address()) {
+    // The proxy resolver running inside a sandbox may not be able to get the
+    // correct host name. Instead, fill it ourself if the request is for our own
+    // IP address.
+    host_request_info.set_host_port_pair(HostPortPair(GetHostName(), 80));
+  }
+  Job* job = new Job(this, resolver_, host_request_info, net_log_,
+                     std::move(client));
   pending_jobs_.insert(job);
   job->Start();
 }
 
 void MojoHostResolverImpl::DeleteJob(Job* job) {
   DCHECK(thread_checker_.CalledOnValidThread());
   size_t num_erased = pending_jobs_.erase(job);
   DCHECK(num_erased);
   delete job;
 }
@@ skipping 52 matching lines @@
 void MojoHostResolverImpl::Job::OnConnectionError() {
   DCHECK(thread_checker_.CalledOnValidThread());
   // |resolver_service_| should always outlive us.
   DCHECK(resolver_service_);
   DVLOG(1) << "Connection error on request for "
            << request_info_.host_port_pair().ToString();
   resolver_service_->DeleteJob(this);
 }
 
 }  // namespace net