relnote: Add QUIC connection option DHDT to disable HPACK dynamic table. Guarded by FLAGS

net/tools/quic/end_to_end_test.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 <stddef.h>
 #include <sys/epoll.h>
 
 #include <list>
 #include <string>
 #include <vector>
@@ skipping 78 matching lines @@
 const char kBarResponseBody[] = "Palm hearts are pretty delicious, also.";
 const float kSessionToStreamRatio = 1.5;
 
 // Run all tests with the cross products of all versions.
 struct TestParams {
   TestParams(const QuicVersionVector& client_supported_versions,
              const QuicVersionVector& server_supported_versions,
              QuicVersion negotiated_version,
              bool client_supports_stateless_rejects,
              bool server_uses_stateless_rejects_if_peer_supported,
-             QuicTag congestion_control_tag)
+             QuicTag congestion_control_tag,
+             bool disable_hpack_dynamic_table)
       : client_supported_versions(client_supported_versions),
         server_supported_versions(server_supported_versions),
         negotiated_version(negotiated_version),
         client_supports_stateless_rejects(client_supports_stateless_rejects),
         server_uses_stateless_rejects_if_peer_supported(
             server_uses_stateless_rejects_if_peer_supported),
-        congestion_control_tag(congestion_control_tag) {}
+        congestion_control_tag(congestion_control_tag),
+        disable_hpack_dynamic_table(disable_hpack_dynamic_table) {}
 
   friend ostream& operator<<(ostream& os, const TestParams& p) {
     os << "{ server_supported_versions: "
        << QuicVersionVectorToString(p.server_supported_versions);
     os << " client_supported_versions: "
        << QuicVersionVectorToString(p.client_supported_versions);
     os << " negotiated_version: " << QuicVersionToString(p.negotiated_version);
     os << " client_supports_stateless_rejects: "
        << p.client_supports_stateless_rejects;
     os << " server_uses_stateless_rejects_if_peer_supported: "
        << p.server_uses_stateless_rejects_if_peer_supported;
     os << " congestion_control_tag: "
-       << QuicUtils::TagToString(p.congestion_control_tag) << " }";
+       << QuicUtils::TagToString(p.congestion_control_tag);
+    os << " disable_hpack_dynamic_table: " << p.disable_hpack_dynamic_table
+       << " }";
     return os;
   }
 
   QuicVersionVector client_supported_versions;
   QuicVersionVector server_supported_versions;
   QuicVersion negotiated_version;
   bool client_supports_stateless_rejects;
   bool server_uses_stateless_rejects_if_peer_supported;
   QuicTag congestion_control_tag;
+  bool disable_hpack_dynamic_table;
 };
 
 // Constructs various test permutations.
 vector<TestParams> GetTestParams() {
   // Divide the versions into buckets in which the intra-frame format
   // is compatible. When clients encounter QUIC version negotiation
   // they simply retransmit all packets using the new version's
   // QUIC framing. However, they are unable to change the intra-frame
   // layout (for example to change SPDY/4 headers to SPDY/3). So
   // these tests need to ensure that clients are never attempting
@@ skipping 10 matching lines @@
       // version negotiation across the version 26 boundary.
       version_buckets[1].push_back(version);
     }
   }
 
   vector<TestParams> params;
   for (bool server_uses_stateless_rejects_if_peer_supported : {true, false}) {
     for (bool client_supports_stateless_rejects : {true, false}) {
       // TODO(rtenneti): Add kTBBR after BBR code is checked in.
       for (const QuicTag congestion_control_tag : {kRENO, kQBIC}) {
-        const int kMaxEnabledOptions = 4;
-        int enabled_options = 0;
-        if (congestion_control_tag != kQBIC) {
-          ++enabled_options;
-        }
-        if (client_supports_stateless_rejects) {
-          ++enabled_options;
-        }
-        if (server_uses_stateless_rejects_if_peer_supported) {
-          ++enabled_options;
-        }
-        CHECK_GE(kMaxEnabledOptions, enabled_options);
+        for (bool disable_hpack_dynamic_table : {true, false}) {
+          const int kMaxEnabledOptions = 5;
+          int enabled_options = 0;
+          if (congestion_control_tag != kQBIC) {
+            ++enabled_options;
+          }
+          if (disable_hpack_dynamic_table) {
+            ++enabled_options;
+          }
+          if (client_supports_stateless_rejects) {
+            ++enabled_options;
+          }
+          if (server_uses_stateless_rejects_if_peer_supported) {
+            ++enabled_options;
+          }
+          CHECK_GE(kMaxEnabledOptions, enabled_options);
 
-        // Run tests with no options, a single option, or all the options
-        // enabled to avoid a combinatorial explosion.
-        if (enabled_options > 1 && enabled_options < kMaxEnabledOptions) {
-          continue;
-        }
-
-        for (const QuicVersionVector& client_versions : version_buckets) {
-          CHECK(!client_versions.empty());
-          // Add an entry for server and client supporting all versions.
-          params.push_back(TestParams(
-              client_versions, all_supported_versions, client_versions.front(),
-              client_supports_stateless_rejects,
-              server_uses_stateless_rejects_if_peer_supported,
-              congestion_control_tag));
-
-          // Run version negotiation tests tests with no options, or all
-          // the options enabled to avoid a combinatorial explosion.
-          if (enabled_options > 0 && enabled_options < kMaxEnabledOptions) {
+          // Run tests with no options, a single option, or all the options
+          // enabled to avoid a combinatorial explosion.
+          if (enabled_options > 1 && enabled_options < kMaxEnabledOptions) {
             continue;
           }
 
-          // Test client supporting all versions and server supporting 1
-          // version. Simulate an old server and exercise version downgrade
-          // in the client. Protocol negotiation should occur. Skip the i =
-          // 0 case because it is essentially the same as the default case.
-          for (size_t i = 1; i < client_versions.size(); ++i) {
-            QuicVersionVector server_supported_versions;
-            server_supported_versions.push_back(client_versions[i]);
-            params.push_back(
-              TestParams(client_versions, server_supported_versions,
-                         server_supported_versions.front(),
-                         client_supports_stateless_rejects,
-                         server_uses_stateless_rejects_if_peer_supported,
-                         congestion_control_tag));
+          for (const QuicVersionVector& client_versions : version_buckets) {
+            CHECK(!client_versions.empty());
+            // Add an entry for server and client supporting all versions.
+            params.push_back(TestParams(
+                client_versions, all_supported_versions,
+                client_versions.front(), client_supports_stateless_rejects,
+                server_uses_stateless_rejects_if_peer_supported,
+                congestion_control_tag, disable_hpack_dynamic_table));
+
+            // Run version negotiation tests tests with no options, or all

[ramant (doing other things), 2016/04/11 18:17:49]

overly nit: should "tests tests" be "tests"?

+            // the options enabled to avoid a combinatorial explosion.
+            if (enabled_options > 0 && enabled_options < kMaxEnabledOptions) {
+              continue;
+            }
+
+            // Test client supporting all versions and server supporting 1
+            // version. Simulate an old server and exercise version downgrade
+            // in the client. Protocol negotiation should occur. Skip the i =
+            // 0 case because it is essentially the same as the default case.
+            for (size_t i = 1; i < client_versions.size(); ++i) {
+              QuicVersionVector server_supported_versions;
+              server_supported_versions.push_back(client_versions[i]);
+              params.push_back(TestParams(
+                  client_versions, server_supported_versions,
+                  server_supported_versions.front(),
+                  client_supports_stateless_rejects,
+                  server_uses_stateless_rejects_if_peer_supported,
+                  congestion_control_tag, disable_hpack_dynamic_table));
+            }
           }
         }
       }
     }
   }
   return params;
 }
 
 class ServerDelegate : public PacketDroppingTestWriter::Delegate {
  public:
@@ skipping 2382 matching lines @@
   client_->client()->WaitForCryptoHandshakeConfirmed();
   SetPacketLossPercentage(1);
   client_->SendRequest("/huge_response");
   client_->WaitForResponse();
   VerifyCleanConnection(false);
 }
 
 }  // namespace
 }  // namespace test
 }  // namespace net