Add a command line flag to force all network traffic through a particular ser...

net/base/fixed_host_resolver.cc

+// Copyright (c) 2009 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/fixed_host_resolver.h"
+
+#include "net/base/net_errors.h"
+#include "net/base/net_util.h"
+#include "net/base/host_resolver_impl.h"
+
+namespace net {
+
+FixedHostResolver::FixedHostResolver(const std::string& host_and_port)
+    : initialized_(false) {
+  std::string host;
+  int port = 0;
+  if (!ParseHostAndPort(host_and_port, &host, &port)) {
+    LOG(ERROR) << "Invalid FixedHostResolver information: " << host_and_port;
+    return;
+  }
+
+  int rv = SystemHostResolverProc(host, net::ADDRESS_FAMILY_UNSPECIFIED,
+                                  &address_);
+  if (rv != OK) {
+    LOG(ERROR) << "Could not resolve fixed host: " << host;
+    return;
+  }
+
+  if (port <= 0) {
+    LOG(ERROR) << "FixedHostResolver must contain a port number";
+    return;
+  }
+
+  address_.SetPort(port);
+  initialized_ = true;
+}
+
+int FixedHostResolver::Resolve(const RequestInfo& info,
+                               AddressList* addresses,
+                               CompletionCallback* callback,
+                               RequestHandle* out_req,
+                               LoadLog* load_log) {
+  if (!initialized_)
+    return ERR_NAME_NOT_RESOLVED;
+
+  DCHECK(addresses);
+  *addresses = address_;
+  return OK;
+}
+
+}  // namespace net
+