Add an async ChannelIDSource for testing.

net/quic/test_tools/crypto_test_utils.cc

 // 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/quic/test_tools/crypto_test_utils.h"
 
 #include "net/quic/crypto/channel_id.h"
 #include "net/quic/crypto/common_cert_set.h"
 #include "net/quic/crypto/crypto_handshake.h"
 #include "net/quic/crypto/quic_crypto_server_config.h"
@@ skipping 106 matching lines @@
     *value = c - 'a' + 10;
     return true;
   }
   if (c >= 'A' && c <= 'F') {
     *value = c - 'A' + 10;
     return true;
   }
   return false;
 }
 
+// A ChannelIDSource that works in asynchronous mode unless the |callback|
+// argument
+// to GetChannelIDKey is NULL.

[Ryan Hamilton, 2014/07/09 16:54:39]

nit: can you wrap this onto the previous line?

[wtc, 2014/07/09 19:44:42]

Done. The first line was folded by "git cl format". I didn't realize it doesn't
add the excess to the second line.

+class AsyncTestChannelIDSource : public ChannelIDSource,
+                                 public CryptoTestUtils::TaskSource {
+ public:
+  // Takes ownership of |sync_source|.
+  explicit AsyncTestChannelIDSource(ChannelIDSource* sync_source)
+      : sync_source_(sync_source) {}
+  virtual ~AsyncTestChannelIDSource() {}
+
+  // ChannelIDSource implementation.
+  virtual QuicAsyncStatus GetChannelIDKey(
+      const string& hostname,
+      scoped_ptr<ChannelIDKey>* channel_id_key,
+      ChannelIDSourceCallback* callback) OVERRIDE {
+    // Synchronous mode.
+    if (!callback) {
+      return sync_source_->GetChannelIDKey(hostname, channel_id_key, NULL);
+    }
+
+    // Asynchronous mode.
+    QuicAsyncStatus status =
+        sync_source_->GetChannelIDKey(hostname, &channel_id_key_, NULL);
+    if (status != QUIC_SUCCESS) {
+      return QUIC_FAILURE;
+    }
+    callback_.reset(callback);
+    return QUIC_PENDING;
+  }
+
+  // TaskSource implementation.
+  virtual void RunPending() OVERRIDE {
+    if (callback_.get()) {
+      callback_->Run(&channel_id_key_);
+      callback_.reset();
+    }
+  }
+
+ private:
+  scoped_ptr<ChannelIDSource> sync_source_;
+  scoped_ptr<ChannelIDSourceCallback> callback_;
+  scoped_ptr<ChannelIDKey> channel_id_key_;
+};
+
 }  // anonymous namespace
 
 CryptoTestUtils::FakeClientOptions::FakeClientOptions()
     : dont_verify_certs(false),
-      channel_id_enabled(false) {
+      channel_id_enabled(false),
+      channel_id_source_async(false) {
 }
 
 // static
 int CryptoTestUtils::HandshakeWithFakeServer(
     PacketSavingConnection* client_conn,
     QuicCryptoClientStream* client) {
   PacketSavingConnection* server_conn =
       new PacketSavingConnection(true, client_conn->supported_versions());
   TestSession server_session(server_conn, DefaultQuicConfig());
 
@@ skipping 27 matching lines @@
   QuicCryptoClientConfig crypto_config;
 
   client_session.config()->SetDefaults();
   crypto_config.SetDefaults();
   if (!options.dont_verify_certs) {
     // TODO(wtc): replace this with ProofVerifierForTesting() when we have
     // a working ProofSourceForTesting().
     crypto_config.SetProofVerifier(FakeProofVerifierForTesting());
   }
   bool is_https = false;
+  AsyncTestChannelIDSource* async_channel_id_source = NULL;
   if (options.channel_id_enabled) {
     is_https = true;
-    crypto_config.SetChannelIDSource(ChannelIDSourceForTesting());
+
+    ChannelIDSource* source = ChannelIDSourceForTesting();
+    if (options.channel_id_source_async) {
+      async_channel_id_source = new AsyncTestChannelIDSource(source);
+      source = async_channel_id_source;
+    }
+    crypto_config.SetChannelIDSource(source);
   }
   QuicServerId server_id(kServerHostname, kServerPort, is_https,
                          PRIVACY_MODE_DISABLED);
   QuicCryptoClientStream client(server_id, &client_session,
                                 ProofVerifyContextForTesting(),
                                 &crypto_config);
   client_session.SetCryptoStream(&client);
 
   CHECK(client.CryptoConnect());
   CHECK_EQ(1u, client_conn->packets_.size());
 
-  CommunicateHandshakeMessages(client_conn, &client, server_conn, server);
+  CommunicateHandshakeMessages(
+      client_conn, &client, server_conn, server, async_channel_id_source);
 
   CompareClientAndServerKeys(&client, server);
 
   if (options.channel_id_enabled) {
     scoped_ptr<ChannelIDKey> channel_id_key;
     QuicAsyncStatus status =
         crypto_config.channel_id_source()->GetChannelIDKey(kServerHostname,
                                                            &channel_id_key,
                                                            NULL);
     EXPECT_EQ(QUIC_SUCCESS, status);
@@ skipping 15 matching lines @@
   options.channel_id_enabled = true;
   scoped_ptr<CryptoHandshakeMessage> scfg(
       crypto_config->AddDefaultConfig(rand, clock, options));
 }
 
 // static
 void CryptoTestUtils::CommunicateHandshakeMessages(
     PacketSavingConnection* a_conn,
     QuicCryptoStream* a,
     PacketSavingConnection* b_conn,
-    QuicCryptoStream* b) {
+    QuicCryptoStream* b,
+    TaskSource* task_source) {
   size_t a_i = 0, b_i = 0;
   while (!a->handshake_confirmed()) {
+    if (task_source) {
+      task_source->RunPending();
+    }
     ASSERT_GT(a_conn->packets_.size(), a_i);
     LOG(INFO) << "Processing " << a_conn->packets_.size() - a_i
               << " packets a->b";
     MovePackets(a_conn, &a_i, b, b_conn);
 
+    if (task_source) {
+      task_source->RunPending();
+    }
     ASSERT_GT(b_conn->packets_.size(), b_i);
     LOG(INFO) << "Processing " << b_conn->packets_.size() - b_i
               << " packets b->a";
-    if (b_conn->packets_.size() - b_i == 2) {
-      LOG(INFO) << "here";
-    }
     MovePackets(b_conn, &b_i, a, a_conn);
   }
 }
 
 // static
 pair<size_t, size_t> CryptoTestUtils::AdvanceHandshake(
     PacketSavingConnection* a_conn,
     QuicCryptoStream* a,
     size_t a_i,
     PacketSavingConnection* b_conn,
@@ skipping 272 matching lines @@
   scoped_ptr<QuicData> bytes(CryptoFramer::ConstructHandshakeMessage(msg));
   scoped_ptr<CryptoHandshakeMessage> parsed(
       CryptoFramer::ParseMessage(bytes->AsStringPiece()));
   CHECK(parsed.get());
 
   return *parsed;
 }
 
 }  // namespace test
 }  // namespace net