Add protocolfilter setting to set overriding protocols for an origin.

cobalt/h5vcc/h5vcc_settings.cc

@@ -118,6 +118,15 @@ bool H5vccSettings::Set(const std::string& name, SetValueType value) const {
     }
   }
 
+  if (name.compare(network::kProtocolFilterKey) == 0 &&
+      value.IsType<std::string>() && value.AsType<std::string>().size() < 512) {
+    std::string rawJson = value.AsType<std::string>();
+    persistent_settings_->Set(network::kProtocolFilterKey,
+                              base::Value(rawJson));
+    network_module_->SetProtocolFilterFromPersistentSettings();
+    return true;
+  }
+
   if (name.compare("cpu_usage_tracker_intervals") == 0 &&
       value.IsType<std::string>() && value.AsType<std::string>().size() < 512) {
     absl::optional<base::Value> config =
@@ -193,6 +202,13 @@ std::string H5vccSettings::GetPersistentSettingAsString(
     absl::optional<std::string> json = base::WriteJson(value);
     return json.value_or(std::string());
   }
+
+  if (key.compare(network::kProtocolFilterKey) == 0) {
+    base::Value value;
+    persistent_settings_->Get(network::kProtocolFilterKey, &value);
+    if (!value.is_string()) return std::string();
+    return value.GetString();
+  }
   return std::string();
 }
 

cobalt/network/network_module.cc

@@ -18,6 +18,7 @@
 
 #include "base/bind.h"
 #include "base/command_line.h"
+#include "base/json/json_reader.h"
 #include "base/logging.h"
 #include "base/path_service.h"
 #include "base/strings/string_number_conversions.h"
@@ -160,6 +161,57 @@ void NetworkModule::SetEnableHttp3FromPersistentSettings() {
   }
 }
 
+void NetworkModule::SetProtocolFilterFromPersistentSettings() {
+  if (!options_.persistent_settings) return;
+
+  base::Value value;
+  options_.persistent_settings->Get(kProtocolFilterKey, &value);
+  if (!value.is_string()) return;
+
+  if (value.GetString().empty()) {
+    task_runner()->PostTask(FROM_HERE,
+                            base::Bind(
+                                [](URLRequestContext* url_request_context) {
+                                  url_request_context->url_request_context()
+                                      ->quic_context()
+                                      ->params()
+                                      ->protocol_filter = absl::nullopt;
+                                },
+                                base::Unretained(url_request_context_.get())));
+    return;
+  }
+
+  absl::optional<base::Value> config =
+      base::JSONReader::Read(value.GetString());
+  if (!config.has_value() || !config->is_list()) return;
+
+  net::ProtocolFilter protocol_filter;
+  for (auto& filter_value : config->GetList()) {
+    if (!filter_value.is_dict()) return;
+    const auto& dict = filter_value.GetDict();
+    const base::Value* origin = dict.Find("origin");
+    const base::Value* alt_svc = dict.Find("altSvc");
+    if (!origin || !alt_svc) continue;
+    if (!origin->is_string() || !alt_svc->is_string()) continue;
+    net::ProtocolFilterEntry entry;
+    entry.origin = origin->GetString();
+    entry.alt_svc = alt_svc->GetString();
+    protocol_filter.push_back(std::move(entry));
+  }
+
+  task_runner()->PostTask(
+      FROM_HERE, base::Bind(
+                     [](URLRequestContext* url_request_context,
+                        net::ProtocolFilter protocol_filter) {
+                       url_request_context->url_request_context()
+                           ->quic_context()
+                           ->params()
+                           ->protocol_filter = std::move(protocol_filter);
+                     },
+                     base::Unretained(url_request_context_.get()),
+                     std::move(protocol_filter)));
+}
+
 void NetworkModule::EnsureStorageManagerStarted() {
   DCHECK(storage_manager_);
   storage_manager_->EnsureStarted();
@@ -249,6 +301,7 @@ void NetworkModule::Initialize(const std::string& user_agent_string,
   SetEnableQuicFromPersistentSettings();
   SetEnableHttp2FromPersistentSettings();
   SetEnableHttp3FromPersistentSettings();
+  SetProtocolFilterFromPersistentSettings();
 }
 
 void NetworkModule::OnCreate(

cobalt/network/network_module.h

@@ -61,6 +61,7 @@ constexpr int32_t kEnabledClientHintHeaders = (kCallTypeLoader | kCallTypeXHR);
 const char kQuicEnabledPersistentSettingsKey[] = "QUICEnabled";
 const char kHttp2EnabledPersistentSettingsKey[] = "HTTP2Enabled";
 const char kHttp3EnabledPersistentSettingsKey[] = "HTTP3Enabled";
+const char kProtocolFilterKey[] = "protocolfilter";
 
 class NetworkSystem;
 // NetworkModule wraps various networking-related components such as
@@ -133,6 +134,7 @@ class NetworkModule : public base::CurrentThread::DestructionObserver {
   void SetEnableQuicFromPersistentSettings();
   void SetEnableHttp2FromPersistentSettings();
   void SetEnableHttp3FromPersistentSettings();
+  void SetProtocolFilterFromPersistentSettings();
 
   // Adds the Client Hint Headers to the provided URLFetcher if enabled.
   void AddClientHintHeaders(net::URLFetcher& url_fetcher,

net/http/http_stream_factory_job_controller.cc

@@ -11,6 +11,9 @@
 #include "base/functional/bind.h"
 #include "base/metrics/histogram_functions.h"
 #include "base/metrics/histogram_macros.h"
+#if defined(STARBOARD)
+#include "base/strings/pattern.h"
+#endif  // defined(STARBOARD)
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "base/task/single_thread_task_runner.h"
@@ -1203,6 +1206,34 @@ HttpStreamFactory::JobController::GetAlternativeServiceInfoInternal(
           url::SchemeHostPort(original_url),
           request_info.network_anonymization_key);
 #if defined(STARBOARD)
+  if (session_->context().quic_context->params()->protocol_filter.has_value()) {
+    url::SchemeHostPort origin(original_url);
+    const ProtocolFilter& protocol_filter = *(session_->context().quic_context->params()->protocol_filter);
+    for (const ProtocolFilterEntry& entry : protocol_filter) {
+      if (!base::MatchPattern(origin.host(), entry.origin)) continue;
+
+      if (!base::StartsWith(entry.alt_svc, "h3")) {
+        return AlternativeServiceInfo();
+      }
+
+      quic::ParsedQuicVersionVector versions;
+      if (base::StartsWith(entry.alt_svc, "h3-Q046")) {
+        versions.push_back(quic::ParsedQuicVersion::Q046());
+      } else {
+        versions.push_back(quic::ParsedQuicVersion::RFCv1());
+      }
+      // If version not supported, skip.
+      if (SelectQuicVersion(versions) == quic::ParsedQuicVersion::Unsupported()) {
+        continue;
+      }
+
+      return AlternativeServiceInfo::CreateQuicAlternativeServiceInfo(
+          AlternativeService(net::kProtoQUIC, origin.host(),
+                             origin.port()),
+          base::Time::Max(), versions);
+    }
+  }
+
   // This block of code suggests QUIC connection for initial requests to a
   // new host. This method is proven to provide performance benefit while still
   // enabling Cobalt network module to fall back on TCP connection when QUIC

net/quic/quic_context.h

@@ -16,6 +16,14 @@
 
 namespace net {
 
+#if defined(STARBOARD)
+struct ProtocolFilterEntry {
+  std::string origin;
+  std::string alt_svc;
+};
+using ProtocolFilter = std::vector<ProtocolFilterEntry>;
+#endif  // defined(STARBOARD)
+
 // Default QUIC supported versions used in absence of any external
 // configuration.
 inline NET_EXPORT_PRIVATE quic::ParsedQuicVersionVector
@@ -201,6 +209,10 @@ struct NET_EXPORT QuicParams {
   // If true, delay main job even the request can be sent immediately on an
   // available SPDY session.
   bool delay_main_job_with_available_spdy_session = false;
+#if defined(STARBOARD)
+  // Override alternative service for an origin.
+  absl::optional<ProtocolFilter> protocol_filter;
+#endif  // defined(STARBOARD)
 };
 
 // QuicContext contains QUIC-related variables that are shared across all of the