Use absl::down_cast in quiche / quic

Upgrade absl to 20260107.0 so we have a version that supports absl::down_cast.
Upgrade rules_cc to 0.2.9 to match absl.

PiperOrigin-RevId: 865498655

Author: asedeno

MODULE.bazel

@@ -7,11 +7,11 @@ module(name = "quiche")
 # Last updated 2025-09-09
 bazel_dep(name = "bazel_skylib", version = "1.8.1")
 
-# Last updated 2025-09-09
-bazel_dep(name = "rules_cc", version = "0.2.4")
+# Last updated 2026-02-04
+bazel_dep(name = "rules_cc", version = "0.2.9")
 
-# Last updated 2025-12-15
-bazel_dep(name = "abseil-cpp", version = "20250814.1", repo_name = "com_google_absl")
+# Last updated 2026-02-04
+bazel_dep(name = "abseil-cpp", version = "20260107.0", repo_name = "com_google_absl")
 
 # Last updated 2025-05-29
 bazel_dep(name = "protobuf", version = "31.1", repo_name = "com_google_protobuf")

MODULE.bazel.lock

@@ -130,6 +130,7 @@ cc_library(
         "@boringssl//:crypto",
         "@boringssl//:ssl",
         "@com_google_absl//absl/algorithm:container",
+        "@com_google_absl//absl/base",
         "@com_google_absl//absl/base:core_headers",
         "@com_google_absl//absl/base:log_severity",
         "@com_google_absl//absl/base:nullability",
@@ -195,6 +196,7 @@ cc_library(
     deps = [
         ":quiche_core",
         "@boringssl//:crypto",
+        "@com_google_absl//absl/base",
         "@com_google_absl//absl/base:core_headers",
         "@com_google_absl//absl/container:flat_hash_map",
         "@com_google_absl//absl/container:flat_hash_set",
@@ -229,6 +231,7 @@ cc_library(
         ":quiche_tool_support",
         "@boringssl//:crypto",
         "@boringssl//:ssl",
+        "@com_google_absl//absl/base",
         "@com_google_absl//absl/base:core_headers",
         "@com_google_absl//absl/base:nullability",
         "@com_google_absl//absl/container:flat_hash_map",
@@ -383,6 +386,7 @@ cc_library(
         "@boringssl//:crypto",
         "@boringssl//:ssl",
         "@com_google_absl//absl/algorithm:container",
+        "@com_google_absl//absl/base",
         "@com_google_absl//absl/base:core_headers",
         "@com_google_absl//absl/base:nullability",
         "@com_google_absl//absl/cleanup",
@@ -445,6 +449,7 @@ cc_library(
         ":quiche_tool_support",
         "@boringssl//:crypto",
         "@com_google_absl//absl/algorithm:container",
+        "@com_google_absl//absl/base",
         "@com_google_absl//absl/base:core_headers",
         "@com_google_absl//absl/cleanup",
         "@com_google_absl//absl/container:flat_hash_map",
@@ -479,6 +484,7 @@ test_suite_from_source_list(
         "@boringssl//:crypto",
         "@boringssl//:ssl",
         "@com_google_absl//absl/algorithm:container",
+        "@com_google_absl//absl/base",
         "@com_google_absl//absl/base:core_headers",
         "@com_google_absl//absl/cleanup",
         "@com_google_absl//absl/container:flat_hash_map",
@@ -533,6 +539,7 @@ test_suite_from_source_list(
         ":quiche_core",
         ":quiche_test_support",
         ":quiche_tool_support",
+        "@com_google_absl//absl/base",
         "@com_google_absl//absl/base:nullability",
         "@com_google_absl//absl/functional:bind_front",
         "@com_google_absl//absl/hash",

quiche/BUILD.bazel

@@ -18,7 +18,7 @@
 #include <utility>
 #include <vector>
 
-
+#include "absl/base/casts.h"
 #include "absl/strings/str_cat.h"
 #include "absl/strings/string_view.h"
 #include "absl/synchronization/notification.h"
@@ -477,7 +477,7 @@ class EndToEndTest : public QuicTestWithParam<TestParams> {
       return nullptr;
     }
     EXPECT_EQ(1u, dispatcher->NumSessions());
-    return static_cast<QuicSpdySession*>(
+    return absl::down_cast<QuicSpdySession*>(
         QuicDispatcherPeer::GetFirstSessionIfAny(dispatcher));
   }
 
@@ -658,7 +658,7 @@ class EndToEndTest : public QuicTestWithParam<TestParams> {
                                QuicDispatcherPeer::GetAlarmFactory(dispatcher),
                                std::make_unique<ServerDelegate>(dispatcher));
     if (stream_factory_ != nullptr) {
-      static_cast<QuicTestServer*>(server_thread_->server())
+      absl::down_cast<QuicTestServer*>(server_thread_->server())
           ->SetSpdyStreamFactory(stream_factory_);
     }
 
@@ -1053,7 +1053,7 @@ class EndToEndTest : public QuicTestWithParam<TestParams> {
 
   QuicConfig PauseServerAndGetLastNegotiatedConfigFromDispatcher() {
     server_thread_->Pause();
-    QuicSimpleDispatcher* dispatcher = static_cast<QuicSimpleDispatcher*>(
+    QuicSimpleDispatcher* dispatcher = absl::down_cast<QuicSimpleDispatcher*>(
         QuicServerPeer::GetDispatcher(server_thread_->server()));
     std::optional<QuicConfig> config = dispatcher->last_negotiated_config();
     if (!config.has_value()) {
@@ -2385,7 +2385,7 @@ TEST_P(EndToEndTest, QUICHE_SLOW_TEST(AddressTokenNotReusedByClient)) {
   client_->Disconnect();
 
   QuicClientSessionCache* session_cache =
-      static_cast<QuicClientSessionCache*>(
+      absl::down_cast<QuicClientSessionCache*>(
           client_crypto_config->session_cache());
   ASSERT_TRUE(
       !QuicClientSessionCachePeer::GetToken(session_cache, server_id).empty());

quiche/quic/core/http/end_to_end_test.cc

@@ -92,7 +92,7 @@ class QuicReceiveControlStreamTest : public QuicTestWithParam<TestParams> {
         session_(connection_) {
     EXPECT_CALL(session_, OnCongestionWindowChange(_)).Times(AnyNumber());
     session_.Initialize();
-    EXPECT_CALL(static_cast<const MockQuicCryptoStream&>(
+    EXPECT_CALL(absl::down_cast<const MockQuicCryptoStream&>(
                     *session_.GetCryptoStream()),
                 encryption_established())
         .WillRepeatedly(testing::Return(true));

quiche/quic/core/http/quic_receive_control_stream_test.cc

@@ -668,7 +668,7 @@ TEST_P(QuicServerSessionBaseTest, BandwidthResumptionExperiment) {
       QuicTime::Delta::FromSeconds(kNumSecondsPerHour + 1));
 
   QuicCryptoServerStreamBase* crypto_stream =
-      static_cast<QuicCryptoServerStreamBase*>(
+      absl::down_cast<QuicCryptoServerStreamBase*>(
           QuicSessionPeer::GetMutableCryptoStream(session_.get()));
 
   // No effect if no CachedNetworkParameters provided.
@@ -804,7 +804,7 @@ class StreamMemberLifetimeTest : public QuicServerSessionBaseTest {
   }
 
   FakeProofSource* GetFakeProofSource() const {
-    return static_cast<FakeProofSource*>(
+    return absl::down_cast<FakeProofSource*>(
         crypto_config_peer_.GetProofSource());
   }
 

quiche/quic/core/http/quic_server_session_base_test.cc

@@ -13,8 +13,8 @@
 #include <string>
 #include <utility>
 
-
 #include "absl/base/attributes.h"
+#include "absl/base/casts.h"
 #include "absl/strings/numbers.h"
 #include "absl/strings/str_cat.h"
 #include "absl/strings/string_view.h"
@@ -864,7 +864,7 @@ void QuicSpdySession::OnHttp3GoAway(uint64_t id) {
               stream->version().transport_version, stream->id())) {
         return true;
       }
-      QuicSpdyStream* spdy_stream = static_cast<QuicSpdyStream*>(stream);
+      QuicSpdyStream* spdy_stream = absl::down_cast<QuicSpdyStream*>(stream);
       WebTransportHttp3* web_transport = spdy_stream->web_transport();
       if (web_transport == nullptr) {
         return true;
@@ -981,7 +981,7 @@ QuicSpdyStream* QuicSpdySession::GetOrCreateSpdyDataStream(
         ConnectionCloseBehavior::SEND_CONNECTION_CLOSE_PACKET);
     return nullptr;
   }
-  return static_cast<QuicSpdyStream*>(stream);
+  return absl::down_cast<QuicSpdyStream*>(stream);
 }
 
 void QuicSpdySession::OnNewEncryptionKeyAvailable(
@@ -1858,7 +1858,7 @@ void QuicSpdySession::OnDatagramReceived(absl::string_view datagram) {
   stream_id64 *= kHttpDatagramStreamIdDivisor;
   QuicStreamId stream_id = static_cast<QuicStreamId>(stream_id64);
   QuicSpdyStream* stream =
-      static_cast<QuicSpdyStream*>(GetActiveStream(stream_id));
+      absl::down_cast<QuicSpdyStream*>(GetActiveStream(stream_id));
   if (stream == nullptr) {
     QUIC_DLOG(INFO) << "Received HTTP/3 datagram for unknown stream ID "
                     << stream_id;

quiche/quic/core/http/quic_spdy_session.cc

@@ -11,8 +11,8 @@
 #include <utility>
 #include <vector>
 
-
 #include "absl/algorithm/container.h"
+#include "absl/base/casts.h"
 #include "absl/status/statusor.h"
 #include "absl/strings/string_view.h"
 #include "quiche/quic/core/http/quic_spdy_session.h"
@@ -222,7 +222,7 @@ WebTransportStream* WebTransportHttp3::AcceptIncomingUnidirectionalStream() {
       // receieved and the time the client has polled for them.
       continue;
     }
-    return static_cast<WebTransportHttp3UnidirectionalStream*>(stream)
+    return absl::down_cast<WebTransportHttp3UnidirectionalStream*>(stream)
         ->interface();
   }
   return nullptr;
@@ -264,9 +264,9 @@ webtransport::Stream* WebTransportHttp3::GetStreamById(
   const bool bidi = QuicUtils::IsBidirectionalStreamId(
       id, ParsedQuicVersion::RFCv1());  // Assume IETF QUIC for WebTransport
   if (bidi) {
-    return static_cast<QuicSpdyStream*>(stream)->web_transport_stream();
+    return absl::down_cast<QuicSpdyStream*>(stream)->web_transport_stream();
   } else {
-    return static_cast<WebTransportHttp3UnidirectionalStream*>(stream)
+    return absl::down_cast<WebTransportHttp3UnidirectionalStream*>(stream)
         ->interface();
   }
 }

quiche/quic/core/http/web_transport_http3.cc

@@ -58,7 +58,7 @@ class QpackReceiveStreamTest : public QuicTestWithParam<TestParams> {
         session_(connection_) {
     EXPECT_CALL(session_, OnCongestionWindowChange(_)).Times(AnyNumber());
     session_.Initialize();
-    EXPECT_CALL(static_cast<const MockQuicCryptoStream&>(
+    EXPECT_CALL(absl::down_cast<const MockQuicCryptoStream&>(
                     *session_.GetCryptoStream()),
                 encryption_established())
         .WillRepeatedly(testing::Return(true));

quiche/quic/core/qpack/qpack_receive_stream_test.cc

@@ -543,7 +543,7 @@ class TestConnection : public QuicConnection {
 
  private:
   TestPacketWriter* writer() {
-    return static_cast<TestPacketWriter*>(QuicConnection::writer());
+    return absl::down_cast<TestPacketWriter*>(QuicConnection::writer());
   }
 
   SimpleDataProducer producer_;