Implement HTTP/2 settings field trial parameters.

net/http/http_network_session.h

 // 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.
 
 #ifndef NET_HTTP_HTTP_NETWORK_SESSION_H_
 #define NET_HTTP_HTTP_NETWORK_SESSION_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 10 matching lines @@
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "base/threading/non_thread_safe.h"
 #include "net/base/host_port_pair.h"
 #include "net/base/net_export.h"
 #include "net/dns/host_resolver.h"
 #include "net/http/http_auth_cache.h"
 #include "net/http/http_stream_factory.h"
 #include "net/quic/chromium/quic_stream_factory.h"
 #include "net/socket/next_proto.h"
+#include "net/spdy/spdy_protocol.h"
 #include "net/spdy/spdy_session_pool.h"
 #include "net/ssl/ssl_client_auth_cache.h"
 
 namespace base {
 class Value;
 namespace trace_event {
 class ProcessMemoryDump;
 }
 }
 
@@ skipping 17 matching lines @@
 class ProxyService;
 class QuicClock;
 class QuicCryptoClientStreamFactory;
 class SocketPerformanceWatcherFactory;
 class SOCKSClientSocketPool;
 class SSLClientSocketPool;
 class SSLConfigService;
 class TransportClientSocketPool;
 class TransportSecurityState;
 
+// Specifies the maximum HPACK dynamic table size the server is allowed to set.
+const uint32_t kSpdyMaxHeaderTableSize = 64 * 1024;
+
+// Specifies the maximum concurrent streams server could send (via push).
+const uint32_t kSpdyMaxConcurrentPushedStreams = 1000;
+
 // This class holds session objects used by HttpNetworkTransaction objects.
 class NET_EXPORT HttpNetworkSession
     : NON_EXPORTED_BASE(public base::NonThreadSafe),
       public base::MemoryCoordinatorClient {
  public:
   struct NET_EXPORT Params {
     Params();
     Params(const Params& other);
     ~Params();
 
@@ skipping 13 matching lines @@
     SocketPerformanceWatcherFactory* socket_performance_watcher_factory;
     bool ignore_certificate_errors;
     uint16_t testing_fixed_http_port;
     uint16_t testing_fixed_https_port;
     bool enable_tcp_fast_open_for_ssl;
 
     // Use SPDY ping frames to test for connection health after idle.
     bool enable_spdy_ping_based_connection_checking;
     bool enable_http2;
     size_t spdy_session_max_recv_window_size;
-    size_t spdy_stream_max_recv_window_size;
+    // HTTP/2 connection settings.
+    // Unknown settings will still be sent to the server.
+    SettingsMap http2_settings;
     // Source of time for SPDY connections.
     SpdySessionPool::TimeFunc time_func;
     // Whether to enable HTTP/2 Alt-Svc entries with hostname different than
     // that of the origin.
     bool enable_http2_alternative_service_with_different_host;
     // Whether to enable QUIC Alt-Svc entries with hostname different than that
     // of the origin.
     bool enable_quic_alternative_service_with_different_host;
 
     // Enables QUIC support.
@@ skipping 178 matching lines @@
 
   ClientSocketPoolManager* GetSocketPoolManager(SocketPoolType pool_type);
 
   // Flush sockets on low memory notifications callback.
   void OnMemoryPressure(
       base::MemoryPressureListener::MemoryPressureLevel memory_pressure_level);
 
   // base::MemoryCoordinatorClient implementation:
   void OnMemoryStateChange(base::MemoryState state) override;
 
+  // Keep all HTTP2 parameters in |http2_settings|, even the ones that are not
+  // implemented, to be sent to the server.
+  // Set default values for settings that |http2_settings| does not specify.
+  SettingsMap AddDefaultHttp2Settings(SettingsMap http2_settings);
+
   NetLog* const net_log_;
   HttpServerProperties* const http_server_properties_;
   CertVerifier* const cert_verifier_;
   HttpAuthHandlerFactory* const http_auth_handler_factory_;
 
   // Not const since it's modified by HttpNetworkSessionPeer for testing.
   ProxyService* proxy_service_;
   const scoped_refptr<SSLConfigService> ssl_config_service_;
 
   HttpAuthCache http_auth_cache_;
@@ skipping 12 matching lines @@
   NextProtoVector next_protos_;
 
   Params params_;
 
   std::unique_ptr<base::MemoryPressureListener> memory_pressure_listener_;
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_NETWORK_SESSION_H_