Add continuous integration and tests

bidi_example.cc does not work in cross compile yet, because libstdc++-dev
is not installed in cross compile sysroots.

src/components/cronet/BUILD.gn

@@ -111,6 +111,18 @@ if (false) {
     configs -= [ "//build/config/compiler:thin_archive" ]
   }
 
+  executable("cronet_example") {
+    testonly = true
+    sources = [ "native/sample/bidi_example.cc" ]
+    deps = [
+      "//components/cronet",
+      "//components/cronet/native:cronet_native_headers",
+    ]
+    if ((is_linux || is_chromeos) && !is_component_build) {
+      public_configs = [ "//build/config/gcc:rpath_for_built_shared_libraries" ]
+    }
+  }
+
   executable("cronet_example_external") {
     testonly = true
     no_default_deps = true

src/components/cronet/android/cronet_library_loader.cc

@@ -146,7 +146,8 @@ void PostTaskToInitThread(const base::Location& posted_from,
   g_init_task_executor->task_runner()->PostTask(posted_from, std::move(task));
 }
 
-void EnsureInitialized() {
+void EnsureInitialized(const char* /*enable_features*/,
+                       const char* /*disable_features*/) {
   if (g_init_task_executor) {
     // Ensure that init is done on the init thread.
     g_init_thread_init_done.Wait();

src/components/cronet/cronet_context.cc

@@ -357,9 +357,10 @@ CronetContext::NetworkTasks::BuildDefaultURLRequestContext(
   SetSharedURLRequestContextBuilderConfig(&context_builder);
 
   const auto proxy_server_it =
-      context_config_->experimental_options.find("proxy_server");
+      context_config_->effective_experimental_options.find("proxy_server");
   std::string proxy_server_str = "direct://";
-  if (proxy_server_it != context_config_->experimental_options.end()) {
+  if (proxy_server_it !=
+      context_config_->effective_experimental_options.end()) {
     const base::Value& value = proxy_server_it->second;
     if (value.is_string()) {
       proxy_server_str = value.GetString();

src/components/cronet/cronet_global_state.h

@@ -31,7 +31,8 @@ void PostTaskToInitThread(const base::Location& posted_from,
 // or binding to an existing thread, to run initialization and process
 // network notifications on. The implementation must be thread-safe and
 // idempotent, and must complete initialization before returning.
-void EnsureInitialized();
+void EnsureInitialized(const char* enable_features = nullptr,
+                       const char* disable_features = nullptr);
 
 // Creates a proxy config service appropriate for this platform that fetches the
 // system proxy settings. Cronet will call this API only after a prior call

src/components/cronet/cronet_global_state_stubs.cc

@@ -22,14 +22,18 @@ namespace cronet {
 
 namespace {
 
-scoped_refptr<base::SingleThreadTaskRunner> InitializeAndCreateTaskRunner() {
+scoped_refptr<base::SingleThreadTaskRunner> InitializeAndCreateTaskRunner(
+    const char* enable_features,
+    const char* disable_features) {
 // Cronet tests sets AtExitManager as part of TestSuite, so statically linked
 // library is not allowed to set its own.
 #if !defined(CRONET_TESTS_IMPLEMENTATION)
   std::ignore = new base::AtExitManager;
 #endif
 
-  base::FeatureList::InitializeInstance(std::string(), std::string());
+  base::FeatureList::InitializeInstance(
+      enable_features ? enable_features : "",
+      disable_features ? disable_features : "");
 
   // Note that in component builds this ThreadPoolInstance will be shared with
   // the calling process, if it also depends on //base. In particular this means
@@ -40,16 +44,19 @@ scoped_refptr<base::SingleThreadTaskRunner> InitializeAndCreateTaskRunner() {
   return base::ThreadPool::CreateSingleThreadTaskRunner({});
 }
 
-base::SingleThreadTaskRunner* InitTaskRunner() {
+base::SingleThreadTaskRunner* InitTaskRunner(
+    const char* enable_features = nullptr,
+    const char* disable_features = nullptr) {
   static scoped_refptr<base::SingleThreadTaskRunner> init_task_runner =
-      InitializeAndCreateTaskRunner();
+      InitializeAndCreateTaskRunner(enable_features, disable_features);
   return init_task_runner.get();
 }
 
 }  // namespace
 
-void EnsureInitialized() {
-  std::ignore = InitTaskRunner();
+void EnsureInitialized(const char* enable_features,
+                       const char* disable_features) {
+  std::ignore = InitTaskRunner(enable_features, disable_features);
 }
 
 bool OnInitThread() {

src/components/cronet/native/engine.cc

@@ -7,6 +7,7 @@
 #include <unordered_set>
 #include <utility>
 
+#include "base/base_switches.h"
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/files/file_path.h"
@@ -102,6 +103,25 @@ Cronet_EngineImpl::~Cronet_EngineImpl() {
 
 Cronet_RESULT Cronet_EngineImpl::StartWithParams(
     Cronet_EngineParamsPtr params) {
+  absl::optional<base::Value::DictStorage> experimental_options =
+      URLRequestContextConfig::ParseExperimentalOptions(
+          params->experimental_options);
+  if (experimental_options) {
+    const auto& iter = experimental_options->find("feature_list");
+    if (iter != experimental_options->end()) {
+      const base::Value& feature_list = iter->second;
+      if (feature_list.is_dict()) {
+        const std::string* enable_features =
+            feature_list.GetDict().FindString(switches::kEnableFeatures);
+        const std::string* disable_features =
+            feature_list.GetDict().FindString(switches::kDisableFeatures);
+        cronet::EnsureInitialized(
+            enable_features ? enable_features->c_str() : nullptr,
+            disable_features ? disable_features->c_str() : nullptr);
+      }
+    }
+  }
+
   cronet::EnsureInitialized();
   base::AutoLock lock(lock_);
 

src/components/cronet/native/sample/bidi_example.cc

@@ -107,6 +107,13 @@ Cronet_EnginePtr CreateCronetEngine() {
   Cronet_EnginePtr cronet_engine = Cronet_Engine_Create();
   Cronet_EngineParamsPtr engine_params = Cronet_EngineParams_Create();
   Cronet_EngineParams_user_agent_set(engine_params, "Cronet");
+  Cronet_EngineParams_experimental_options_set(engine_params, R"({
+  "ssl_key_log_file": "/tmp/keys",
+  "feature_list": {
+    "enable-features": "PartitionConnectionsByNetworkIsolationKey"
+  },
+  "proxy_server": "socks5://127.0.0.1:1080"
+})");
   Cronet_Engine_StartWithParams(cronet_engine, engine_params);
   Cronet_EngineParams_Destroy(engine_params);
   return cronet_engine;
@@ -122,17 +129,26 @@ int main(int argc, const char* argv[]) {
   stream_engine* cronet_stream_engine =
       Cronet_Engine_GetStreamEngine(cronet_engine);
 
+  Cronet_Engine_StartNetLogToFile(cronet_engine, "/tmp/log.json", true);
   BidirectionalStreamCallback stream_callback;
   stream_callback.stream = bidirectional_stream_create(
       cronet_stream_engine, &stream_callback, stream_callback.callback());
-  bidirectional_stream_start(stream_callback.stream, url, 0, "GET", nullptr,
-                             true);
+
+  bidirectional_stream_header headers[] = {
+      {"-network-isolation-key", "http://a"},
+  };
+  const bidirectional_stream_header_array headers_array = {1, 1, headers};
+  if (bidirectional_stream_start(stream_callback.stream, url, 0, "GET",
+                                 &headers_array, true) < 0) {
+    stream_callback.done = true;
+  }
   puts("bidirectional_stream_start");
   while (!stream_callback.done) {
     std::this_thread::sleep_for(std::chrono::milliseconds(100));
   }
   bidirectional_stream_destroy(stream_callback.stream);
 
+  Cronet_Engine_StopNetLog(cronet_engine);
   Cronet_Engine_Shutdown(cronet_engine);
   Cronet_Engine_Destroy(cronet_engine);
   return 0;

src/components/cronet/url_request_context_config.cc

@@ -758,6 +758,23 @@ void URLRequestContextConfig::SetContextBuilderExperimentalOptions(
         continue;
       }
       session_params->spdy_go_away_on_ip_change = iter.second.GetBool();
+    } else if (iter.first == "proxy_server") {
+      if (!iter.second.is_string()) {
+        LOG(ERROR) << "\"" << iter.first << "\" config params \"" << iter.second
+                   << "\" is not a string";
+        effective_experimental_options.erase(iter.first);
+        continue;
+      }
+      // Handled in CronetContext::NetworkTasks::BuildDefaultURLRequestContext.
+    } else if (iter.first == "feature_list") {
+      if (!iter.second.is_dict()) {
+        LOG(ERROR) << "\"" << iter.first << "\" config params \"" << iter.second
+                   << "\" is not a dictionary value";
+        effective_experimental_options.erase(iter.first);
+        continue;
+      }
+      // Already handled in Cronet_EngineImpl::StartWithParams.
+      // Only checks and reports errors here.
     } else {
       LOG(WARNING) << "Unrecognized Cronet experimental option \"" << iter.first
                    << "\" with params \"" << iter.second;

src/components/cronet/url_request_context_config.h

@@ -216,6 +216,12 @@ struct URLRequestContextConfig {
       // not specify for other targets.
       absl::optional<double> network_thread_priority);
 
+  // Parses experimental options from their JSON format to the format used
+  // internally.
+  // Returns an empty optional if the operation was unsuccessful.
+  static absl::optional<base::Value::DictStorage> ParseExperimentalOptions(
+      std::string unparsed_experimental_options);
+
  private:
   URLRequestContextConfig(
       // Enable QUIC.
@@ -253,12 +259,6 @@ struct URLRequestContextConfig {
       // not specify for other targets.
       absl::optional<double> network_thread_priority);
 
-  // Parses experimental options from their JSON format to the format used
-  // internally.
-  // Returns an empty optional if the operation was unsuccessful.
-  static absl::optional<base::Value::DictStorage> ParseExperimentalOptions(
-      std::string unparsed_experimental_options);
-
   // Makes appropriate changes to settings in |this|.
   void SetContextConfigExperimentalOptions();
 

src/components/grpc_support/bidirectional_stream.cc

@@ -21,6 +21,7 @@
 #include "net/base/io_buffer.h"
 #include "net/base/net_errors.h"
 #include "net/base/request_priority.h"
+#include "net/base/schemeful_site.h"
 #include "net/http/bidirectional_stream.h"
 #include "net/http/bidirectional_stream_request_info.h"
 #include "net/http/http_network_session.h"
@@ -96,8 +97,20 @@ int BidirectionalStream::Start(const char* url,
   request_info->priority = static_cast<net::RequestPriority>(priority);
   // Http method is a token, just as header name.
   request_info->method = method;
-  if (!net::HttpUtil::IsValidHeaderName(request_info->method))
+  if (!net::HttpUtil::IsValidHeaderName(request_info->method)) {
+    LOG(ERROR) << "Invalid method " << request_info->method;
     return -1;
+  }
+  std::string network_isolation_key_header;
+  if (headers.GetHeader("-network-isolation-key",
+                        &network_isolation_key_header)) {
+    net::SchemefulSite site(GURL{network_isolation_key_header});
+    if (site.opaque()) {
+      LOG(ERROR) << "Invalid -network-isolation-key "
+                 << network_isolation_key_header;
+      return -1;
+    }
+  }
   request_info->extra_headers.CopyFrom(headers);
   request_info->end_stream_on_headers = end_of_stream;
   write_end_of_stream_ = end_of_stream;

src/net/http/bidirectional_stream.cc

@@ -207,6 +207,14 @@ void BidirectionalStream::StartRequest(const SSLConfig& ssl_config) {
   HttpRequestInfo http_request_info;
   http_request_info.url = request_info_->url;
   http_request_info.method = request_info_->method;
+  std::string network_isolation_key_header;
+  if (request_info_->extra_headers.GetHeader("-network-isolation-key",
+                                             &network_isolation_key_header)) {
+    request_info_->extra_headers.RemoveHeader("-network-isolation-key");
+    net::SchemefulSite site(GURL{network_isolation_key_header});
+    CHECK(!site.opaque());
+    http_request_info.network_isolation_key = NetworkIsolationKey(site, site);
+  }
   http_request_info.extra_headers = request_info_->extra_headers;
   http_request_info.socket_tag = request_info_->socket_tag;
   stream_request_ =