Implements new, more robust design for communicating between SSLConnectJobs.

net/socket/ssl_client_socket_pool_unittest.cc

Index: net/socket/ssl_client_socket_pool_unittest.cc
diff --git a/net/socket/ssl_client_socket_pool_unittest.cc b/net/socket/ssl_client_socket_pool_unittest.cc
index e71d0b2c2357683bd4547d075f71d5f4ffcc5209..9b8be6d5117a8b1e4212df698c36f92d58ad2746 100644
--- a/net/socket/ssl_client_socket_pool_unittest.cc
+++ b/net/socket/ssl_client_socket_pool_unittest.cc
@@ -6,6 +6,7 @@
 
 #include "base/callback.h"
 #include "base/compiler_specific.h"
+#include "base/run_loop.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/time/time.h"
@@ -130,7 +131,10 @@ class SSLClientSocketPoolTest
     ssl_config_service->GetSSLConfig(&ssl_config_);
   }
 
-  void CreatePool(bool transport_pool, bool http_proxy_pool, bool socks_pool) {
+  void CreatePool(bool transport_pool,
+                  bool http_proxy_pool,
+                  bool socks_pool,
+                  bool enable_ssl_connect_job_waiting = false) {

[wtc, 2014/07/23 22:53:33]

Don't use default arguments. In general the Style Guide prohibits default
arguments.

[mshelley, 2014/07/24 20:37:49]

Done.

     ssl_histograms_.reset(new ClientSocketPoolHistograms("SSLUnitTest"));
     pool_.reset(new SSLClientSocketPool(
         kMaxSockets,
@@ -147,6 +151,7 @@ class SSLClientSocketPoolTest
         socks_pool ? &socks_socket_pool_ : NULL,
         http_proxy_pool ? &http_proxy_socket_pool_ : NULL,
         NULL,
+        enable_ssl_connect_job_waiting,
         NULL));
   }
 
@@ -229,6 +234,424 @@ INSTANTIATE_TEST_CASE_P(
     testing::Values(kProtoDeprecatedSPDY2,
                     kProtoSPDY3, kProtoSPDY31, kProtoSPDY4));
 
+// Tests that the final socket will connect even if all sockets
+// prior to it fail.
+TEST_P(SSLClientSocketPoolTest, AllSocketsFailButLast) {
+  StaticSocketDataProvider data1;
+  StaticSocketDataProvider data2;
+  StaticSocketDataProvider data3;
+  StaticSocketDataProvider data4;
+  socket_factory_.AddSocketDataProvider(&data1);
+  socket_factory_.AddSocketDataProvider(&data2);
+  socket_factory_.AddSocketDataProvider(&data3);
+  socket_factory_.AddSocketDataProvider(&data4);
+  socket_factory_.AddSocketDataProvider(&data4);
+  socket_factory_.AddSocketDataProvider(&data4);
+  socket_factory_.AddSocketDataProvider(&data4);
+  socket_factory_.AddSocketDataProvider(&data4);
+  SSLSocketDataProvider ssl(ASYNC, ERR_SSL_PROTOCOL_ERROR);
+  ssl.is_in_session_cache = false;
+  SSLSocketDataProvider ssl2(ASYNC, ERR_SSL_PROTOCOL_ERROR);
+  ssl2.is_in_session_cache = true;
+  SSLSocketDataProvider ssl3(ASYNC, ERR_SSL_PROTOCOL_ERROR);
+  ssl3.is_in_session_cache = true;
+  SSLSocketDataProvider ssl4(ASYNC, OK);
+  ssl4.is_in_session_cache = true;
+
+  socket_factory_.AddSSLSocketDataProvider(&ssl);
+  socket_factory_.AddSSLSocketDataProvider(&ssl2);
+  socket_factory_.AddSSLSocketDataProvider(&ssl3);
+  socket_factory_.AddSSLSocketDataProvider(&ssl4);
+  socket_factory_.AddSSLSocketDataProvider(&ssl4);
+  socket_factory_.AddSSLSocketDataProvider(&ssl4);
+  socket_factory_.AddSSLSocketDataProvider(&ssl4);
+  socket_factory_.AddSSLSocketDataProvider(&ssl4);
+
+  CreatePool(true, false, false, true);
+
+  scoped_refptr<SSLSocketParams> params1 =
+      SSLParams(ProxyServer::SCHEME_DIRECT, false);
+  scoped_refptr<SSLSocketParams> params2 =
+      SSLParams(ProxyServer::SCHEME_DIRECT, false);
+  scoped_refptr<SSLSocketParams> params3 =
+      SSLParams(ProxyServer::SCHEME_DIRECT, false);
+  scoped_refptr<SSLSocketParams> params4 =
+      SSLParams(ProxyServer::SCHEME_DIRECT, false);
+  ClientSocketHandle handle1;
+  ClientSocketHandle handle2;
+  ClientSocketHandle handle3;
+  ClientSocketHandle handle4;
+  TestCompletionCallback callback1;
+  TestCompletionCallback callback2;
+  TestCompletionCallback callback3;
+  TestCompletionCallback callback4;
+
+  handle1.Init(
+      "b", params1, MEDIUM, callback1.callback(), pool_.get(), BoundNetLog());
+  handle2.Init(
+      "b", params2, MEDIUM, callback2.callback(), pool_.get(), BoundNetLog());
+  handle3.Init(
+      "b", params3, MEDIUM, callback3.callback(), pool_.get(), BoundNetLog());
+  handle4.Init(
+      "b", params3, MEDIUM, callback3.callback(), pool_.get(), BoundNetLog());
+
+  base::RunLoop().RunUntilIdle();
+
+  std::vector<MockSSLClientSocket*> sockets =
+      socket_factory_.ssl_client_sockets();
+
+  // Only the last socket should have connected.
+  EXPECT_FALSE(handle1.socket());
+  EXPECT_FALSE(handle2.socket());
+  EXPECT_FALSE(handle3.socket());
+  EXPECT_TRUE(handle4.socket()->IsConnected());
+}
+
+// Tests that sockets will still connect in parellel if the
+// EnableSSLConnectJobWaiting flag is not enabled.
+TEST_P(SSLClientSocketPoolTest, SocketsConnectWithoutFlag) {
+  StaticSocketDataProvider data1;
+  StaticSocketDataProvider data2;
+  StaticSocketDataProvider data3;
+  socket_factory_.AddSocketDataProvider(&data1);
+  socket_factory_.AddSocketDataProvider(&data2);
+  socket_factory_.AddSocketDataProvider(&data3);
+
+  SSLSocketDataProvider ssl(ASYNC, OK);
+  ssl.is_in_session_cache = false;
+  ssl.should_block_on_connect = true;
+  SSLSocketDataProvider ssl2(ASYNC, OK);
+  ssl2.is_in_session_cache = true;
+  ssl2.should_block_on_connect = true;
+  SSLSocketDataProvider ssl3(ASYNC, OK);
+  ssl3.is_in_session_cache = true;
+  ssl3.should_block_on_connect = true;
+  socket_factory_.AddSSLSocketDataProvider(&ssl);
+  socket_factory_.AddSSLSocketDataProvider(&ssl2);
+  socket_factory_.AddSSLSocketDataProvider(&ssl3);
+
+  CreatePool(true, false, false);
+
+  scoped_refptr<SSLSocketParams> params1 =
+      SSLParams(ProxyServer::SCHEME_DIRECT, false);
+  scoped_refptr<SSLSocketParams> params2 =
+      SSLParams(ProxyServer::SCHEME_DIRECT, false);
+  scoped_refptr<SSLSocketParams> params3 =
+      SSLParams(ProxyServer::SCHEME_DIRECT, false);
+  ClientSocketHandle handle1;
+  ClientSocketHandle handle2;
+  ClientSocketHandle handle3;
+  TestCompletionCallback callback1;
+  TestCompletionCallback callback2;
+  TestCompletionCallback callback3;
+
+  handle1.Init(
+      "b", params1, MEDIUM, callback1.callback(), pool_.get(), BoundNetLog());
+  handle2.Init(
+      "b", params2, MEDIUM, callback2.callback(), pool_.get(), BoundNetLog());
+  handle3.Init(
+      "b", params3, MEDIUM, callback3.callback(), pool_.get(), BoundNetLog());
+
+  base::RunLoop().RunUntilIdle();
+
+  std::vector<MockSSLClientSocket*> sockets =
+      socket_factory_.ssl_client_sockets();
+
+  // All sockets should have started their connections.
+  for (std::vector<MockSSLClientSocket*>::iterator it = sockets.begin();
+       it != sockets.end();
+       ++it) {
+    EXPECT_TRUE((*it)->IsConnected());
+    (*it)->RestartPausedConnect();
+  }
+
+  callback3.WaitForResult();
+
+  EXPECT_TRUE(handle1.socket()->IsConnected());
+  EXPECT_TRUE(handle2.socket()->IsConnected());
+  EXPECT_TRUE(handle3.socket()->IsConnected());
+}
+
+// Tests that the pool deleting an SSLConnectJob will not cause a crash,
+// or prevent pending sockets from connecting.
+TEST_P(SSLClientSocketPoolTest, DeletedSSLConnectJob) {
+  StaticSocketDataProvider data1;
+  StaticSocketDataProvider data2;
+  StaticSocketDataProvider data3;
+  socket_factory_.AddSocketDataProvider(&data1);
+  socket_factory_.AddSocketDataProvider(&data2);
+  socket_factory_.AddSocketDataProvider(&data3);
+
+  SSLSocketDataProvider ssl(ASYNC, OK);
+  ssl.is_in_session_cache = false;
+  ssl.should_block_on_connect = true;
+  SSLSocketDataProvider ssl2(ASYNC, OK);
+  ssl2.is_in_session_cache = false;
+  SSLSocketDataProvider ssl3(ASYNC, OK);
+  ssl3.is_in_session_cache = false;
+  socket_factory_.AddSSLSocketDataProvider(&ssl);
+  socket_factory_.AddSSLSocketDataProvider(&ssl2);
+  socket_factory_.AddSSLSocketDataProvider(&ssl3);
+
+  CreatePool(true, false, false, true);
+
+  scoped_refptr<SSLSocketParams> params1 =
+      SSLParams(ProxyServer::SCHEME_DIRECT, false);
+  scoped_refptr<SSLSocketParams> params2 =
+      SSLParams(ProxyServer::SCHEME_DIRECT, false);
+  scoped_refptr<SSLSocketParams> params3 =
+      SSLParams(ProxyServer::SCHEME_DIRECT, false);
+  ClientSocketHandle handle1;
+  ClientSocketHandle handle2;
+  ClientSocketHandle handle3;
+  TestCompletionCallback callback1;
+  TestCompletionCallback callback2;
+  TestCompletionCallback callback3;
+
+  handle1.Init(
+      "b", params1, MEDIUM, callback1.callback(), pool_.get(), BoundNetLog());
+  handle2.Init(
+      "b", params2, MEDIUM, callback2.callback(), pool_.get(), BoundNetLog());
+  handle3.Init(
+      "b", params3, MEDIUM, callback3.callback(), pool_.get(), BoundNetLog());
+
+  // Allow the connections to proceed until the first socket has started
+  // connecting.
+  base::RunLoop().RunUntilIdle();
+
+  std::vector<MockSSLClientSocket*> sockets =
+      socket_factory_.ssl_client_sockets();
+
+  pool_->CancelRequest("b", &handle2);
+
+  sockets[0]->RestartPausedConnect();
+
+  callback3.WaitForResult();
+
+  EXPECT_TRUE(handle1.socket()->IsConnected());
+  EXPECT_FALSE(handle2.socket());
+  EXPECT_TRUE(handle3.socket()->IsConnected());
+}
+
+// Tests that all pending sockets still connect when the pool deletes a pending
+// SSLConnectJob which immediately followed a failed leading connection.
+TEST_P(SSLClientSocketPoolTest, DeletedSocketAfterFail) {
+  StaticSocketDataProvider data1;
+  StaticSocketDataProvider data2;
+  StaticSocketDataProvider data3;
+  socket_factory_.AddSocketDataProvider(&data1);
+  socket_factory_.AddSocketDataProvider(&data2);
+  socket_factory_.AddSocketDataProvider(&data3);
+
+  SSLSocketDataProvider ssl(ASYNC, ERR_SSL_PROTOCOL_ERROR);
+  ssl.is_in_session_cache = false;
+  ssl.should_block_on_connect = true;
+  SSLSocketDataProvider ssl2(ASYNC, OK);
+  ssl2.is_in_session_cache = false;
+  SSLSocketDataProvider ssl3(ASYNC, OK);
+  ssl3.is_in_session_cache = false;
+  socket_factory_.AddSSLSocketDataProvider(&ssl);
+  socket_factory_.AddSSLSocketDataProvider(&ssl2);
+  socket_factory_.AddSSLSocketDataProvider(&ssl3);
+
+  CreatePool(true, false, false, true);
+
+  scoped_refptr<SSLSocketParams> params1 =
+      SSLParams(ProxyServer::SCHEME_DIRECT, false);
+  scoped_refptr<SSLSocketParams> params2 =
+      SSLParams(ProxyServer::SCHEME_DIRECT, false);
+  scoped_refptr<SSLSocketParams> params3 =
+      SSLParams(ProxyServer::SCHEME_DIRECT, false);
+  ClientSocketHandle handle1;
+  ClientSocketHandle handle2;
+  ClientSocketHandle handle3;
+  TestCompletionCallback callback1;
+  TestCompletionCallback callback2;
+  TestCompletionCallback callback3;
+
+  handle1.Init(
+      "b", params1, MEDIUM, callback1.callback(), pool_.get(), BoundNetLog());
+  handle2.Init(
+      "b", params2, MEDIUM, callback2.callback(), pool_.get(), BoundNetLog());
+  handle3.Init(
+      "b", params3, MEDIUM, callback3.callback(), pool_.get(), BoundNetLog());
+
+  // Allow the connections to proceed until the first socket has started
+  // connecting.
+  base::RunLoop().RunUntilIdle();
+
+  std::vector<MockSSLClientSocket*> sockets =
+      socket_factory_.ssl_client_sockets();
+
+  pool_->CancelRequest("b", &handle2);
+
+  sockets[0]->RestartPausedConnect();
+
+  callback3.WaitForResult();
+
+  EXPECT_TRUE(handle1.socket()->IsConnected());
+  EXPECT_FALSE(handle2.socket());
+  EXPECT_TRUE(handle3.socket()->IsConnected());
+}
+
+// Make sure that sockets still connect after the leader socket's
+// connection fails.
+TEST_P(SSLClientSocketPoolTest, SimultaneousConnectJobsFail) {
+  StaticSocketDataProvider data1;
+  StaticSocketDataProvider data2;
+  StaticSocketDataProvider data3;
+  StaticSocketDataProvider data4;
+  StaticSocketDataProvider data5;
+  socket_factory_.AddSocketDataProvider(&data1);
+  socket_factory_.AddSocketDataProvider(&data2);
+  socket_factory_.AddSocketDataProvider(&data3);
+  socket_factory_.AddSocketDataProvider(&data4);
+  socket_factory_.AddSocketDataProvider(&data5);
+  SSLSocketDataProvider ssl(ASYNC, ERR_SSL_PROTOCOL_ERROR);
+  ssl.is_in_session_cache = false;
+  ssl.should_block_on_connect = true;
+  SSLSocketDataProvider ssl2(ASYNC, OK);
+  ssl2.is_in_session_cache = false;
+  ssl2.should_block_on_connect = true;
+  SSLSocketDataProvider ssl3(ASYNC, OK);
+  ssl3.is_in_session_cache = false;
+  SSLSocketDataProvider ssl4(ASYNC, OK);
+  ssl4.is_in_session_cache = false;
+  SSLSocketDataProvider ssl5(ASYNC, OK);
+  ssl5.is_in_session_cache = false;
+
+  socket_factory_.AddSSLSocketDataProvider(&ssl);
+  socket_factory_.AddSSLSocketDataProvider(&ssl2);
+  socket_factory_.AddSSLSocketDataProvider(&ssl3);
+  socket_factory_.AddSSLSocketDataProvider(&ssl4);
+  socket_factory_.AddSSLSocketDataProvider(&ssl5);
+
+  CreatePool(true, false, false, true);
+  scoped_refptr<SSLSocketParams> params1 =
+      SSLParams(ProxyServer::SCHEME_DIRECT, false);
+  scoped_refptr<SSLSocketParams> params2 =
+      SSLParams(ProxyServer::SCHEME_DIRECT, false);
+  scoped_refptr<SSLSocketParams> params3 =
+      SSLParams(ProxyServer::SCHEME_DIRECT, false);
+  scoped_refptr<SSLSocketParams> params4 =
+      SSLParams(ProxyServer::SCHEME_DIRECT, false);
+  ClientSocketHandle handle1;
+  ClientSocketHandle handle2;
+  ClientSocketHandle handle3;
+  ClientSocketHandle handle4;
+  TestCompletionCallback callback1;
+  TestCompletionCallback callback2;
+  TestCompletionCallback callback3;
+  TestCompletionCallback callback4;
+  handle1.Init(
+      "b", params1, MEDIUM, callback1.callback(), pool_.get(), BoundNetLog());
+  handle2.Init(
+      "b", params2, MEDIUM, callback2.callback(), pool_.get(), BoundNetLog());
+  handle3.Init(
+      "b", params3, MEDIUM, callback3.callback(), pool_.get(), BoundNetLog());
+  handle4.Init(
+      "b", params4, MEDIUM, callback4.callback(), pool_.get(), BoundNetLog());
+
+  base::RunLoop().RunUntilIdle();
+
+  std::vector<MockSSLClientSocket*> sockets =
+      socket_factory_.ssl_client_sockets();
+
+  // The first socket's connection should have failed, and no other sockets
+  // should have connected yet.
+  for (std::vector<MockSSLClientSocket*>::iterator it = sockets.begin();
+       it != sockets.end();
+       ++it) {
+    EXPECT_FALSE((*it)->IsConnected());
+  }
+
+  // Allow the first socket to resume it's connection process.
+  sockets[0]->RestartPausedConnect();
+
+  base::RunLoop().RunUntilIdle();
+
+  // The second socket should have connected.
+  EXPECT_TRUE(sockets[1]->IsConnected());
+
+  // Allow the second socket to continue its connection.
+  sockets[1]->RestartPausedConnect();
+
+  callback4.WaitForResult();
+
+  // Pending connections should ultimately succeed.
+  for (std::vector<MockSSLClientSocket*>::iterator it = ++sockets.begin();
+       it != sockets.end();
+       ++it) {
+    EXPECT_TRUE((*it)->IsConnected());
+  }
+}
+
+// Make sure that no sockets connect before the "leader" socket,
+// given that the leader has a successful connection.
+TEST_P(SSLClientSocketPoolTest, SimultaneousConnectJobsSuccess) {
+  StaticSocketDataProvider data1;
+  StaticSocketDataProvider data2;
+  StaticSocketDataProvider data3;
+  socket_factory_.AddSocketDataProvider(&data1);
+  socket_factory_.AddSocketDataProvider(&data2);
+  socket_factory_.AddSocketDataProvider(&data3);
+
+  SSLSocketDataProvider ssl(ASYNC, OK);
+  ssl.is_in_session_cache = false;
+  ssl.should_block_on_connect = true;
+  SSLSocketDataProvider ssl2(ASYNC, OK);
+  ssl2.is_in_session_cache = false;
+  SSLSocketDataProvider ssl3(ASYNC, OK);
+  ssl3.is_in_session_cache = false;
+  socket_factory_.AddSSLSocketDataProvider(&ssl);
+  socket_factory_.AddSSLSocketDataProvider(&ssl2);
+  socket_factory_.AddSSLSocketDataProvider(&ssl3);
+
+  CreatePool(true, false, false, true);
+
+  scoped_refptr<SSLSocketParams> params1 =
+      SSLParams(ProxyServer::SCHEME_DIRECT, false);
+  scoped_refptr<SSLSocketParams> params2 =
+      SSLParams(ProxyServer::SCHEME_DIRECT, false);
+  scoped_refptr<SSLSocketParams> params3 =
+      SSLParams(ProxyServer::SCHEME_DIRECT, false);
+  ClientSocketHandle handle1;
+  ClientSocketHandle handle2;
+  ClientSocketHandle handle3;
+  TestCompletionCallback callback1;
+  TestCompletionCallback callback2;
+  TestCompletionCallback callback3;
+
+  handle1.Init(
+      "b", params1, MEDIUM, callback1.callback(), pool_.get(), BoundNetLog());
+  handle2.Init(
+      "b", params2, MEDIUM, callback2.callback(), pool_.get(), BoundNetLog());
+  handle3.Init(
+      "b", params3, MEDIUM, callback3.callback(), pool_.get(), BoundNetLog());
+
+  // Allow the connections to proceed until the first socket has finished
+  // connecting.
+  base::RunLoop().RunUntilIdle();
+
+  std::vector<MockSSLClientSocket*> sockets =
+      socket_factory_.ssl_client_sockets();
+
+  EXPECT_TRUE(sockets[0]->IsConnected());
+  for (std::vector<MockSSLClientSocket*>::iterator it = ++sockets.begin();
+       it != sockets.end();
+       ++it) {
+    EXPECT_FALSE((*it)->IsConnected());
+  }
+
+  sockets[0]->RestartPausedConnect();
+
+  callback3.WaitForResult();
+
+  EXPECT_TRUE(handle1.socket()->IsConnected());
+  EXPECT_TRUE(handle2.socket()->IsConnected());
+  EXPECT_TRUE(handle3.socket()->IsConnected());
+}
+
 TEST_P(SSLClientSocketPoolTest, TCPFail) {
   StaticSocketDataProvider data;
   data.set_connect_data(MockConnect(SYNCHRONOUS, ERR_CONNECTION_FAILED));