[Cronet] Integrate CrNet functionality into Cronet on iOS.

components/cronet/ios/test/test_server.cc

+// Copyright 2016 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 "components/cronet/ios/test/test_server.h"
+
+#include <utility>
+
+#include "base/bind.h"
+#include "base/memory/ptr_util.h"
+#include "base/strings/string_util.h"
+#include "net/test/embedded_test_server/embedded_test_server.h"
+#include "net/test/embedded_test_server/http_request.h"
+#include "net/test/embedded_test_server/http_response.h"
+
+namespace {
+
+const char kEchoHeaderPath[] = "/EchoHeader?";
+
+std::unique_ptr<net::EmbeddedTestServer> g_test_server;
+
+std::unique_ptr<net::test_server::HttpResponse> EchoHeaderInRequest(
+    const net::test_server::HttpRequest& request) {
+  std::string header_name;
+  std::string header_value;
+  if (base::StartsWith(request.relative_url, kEchoHeaderPath,
+                       base::CompareCase::INSENSITIVE_ASCII)) {
+    header_name = request.relative_url.substr(strlen(kEchoHeaderPath));
+  }
+  auto it = request.headers.find(header_name);
+  if (it != request.headers.end())
+    header_value = it->second;
+  std::unique_ptr<net::test_server::BasicHttpResponse> http_response(
+      new net::test_server::BasicHttpResponse());
+  http_response->set_content(header_value);
+  return std::move(http_response);
+}
+
+}  // namespace
+
+namespace cronet {
+
+/* static */
+bool TestServer::Start() {
+  DCHECK(!g_test_server.get());
+  g_test_server = base::MakeUnique<net::EmbeddedTestServer>(
+      net::EmbeddedTestServer::TYPE_HTTPS);
+  g_test_server->RegisterRequestHandler(base::Bind(&EchoHeaderInRequest));
+  CHECK(g_test_server->Start());
+  return true;
+}
+
+void TestServer::Shutdown() {
+  DCHECK(g_test_server.get());
+  g_test_server.reset();
+}
+
+std::string TestServer::GetEchoHeaderURL(const std::string& header_name) {
+  DCHECK(g_test_server);
+  return g_test_server->GetURL(kEchoHeaderPath + header_name).spec();
+}
+
+}  // namespace cronet