Land Recent QUIC Changes

net/quic/quic_config.h

+// Copyright (c) 2013 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_QUIC_QUIC_CONFIG_H_
+#define NET_QUIC_QUIC_CONFIG_H_
+
+#include <string>
+
+#include "net/quic/crypto/crypto_handshake.h"
+#include "net/quic/crypto/crypto_utils.h"
+#include "net/quic/quic_time.h"
+
+namespace net {
+
+// QuicNegotiatedParameters contains non-crypto parameters that are agreed upon
+// during the crypto handshake.
+class NET_EXPORT_PRIVATE QuicNegotiatedParameters {
+ public:
+  QuicNegotiatedParameters();
+
+  CryptoTag congestion_control;
+  QuicTime::Delta idle_connection_state_lifetime;
+  QuicTime::Delta keepalive_timeout;
+};
+
+// QuicConfig contains non-crypto configuration options that are negotiated in
+// the crypto handshake.
+class NET_EXPORT_PRIVATE QuicConfig {
+ public:
+  QuicConfig();
+  ~QuicConfig();
+
+  // SetDefaults sets the members to sensible, default values.
+  void SetDefaults();
+
+  // SetFromMessage extracts the non-crypto configuration from |msg| and sets
+  // the members of this object to match. This is expected to be called in the
+  // case of a server which is loading a server config. The server config
+  // contains the non-crypto parameters and so the server will need to keep its
+  // QuicConfig in sync with the server config that it'll be sending to
+  // clients.
+  bool SetFromHandshakeMessage(const CryptoHandshakeMessage& scfg);
+
+  // ToHandshakeMessage serializes the settings in this object as a series of
+  // tags /value pairs and adds them to |out|.
+  void ToHandshakeMessage(CryptoHandshakeMessage* out) const;
+
+  QuicErrorCode ProcessFinalPeerHandshake(
+      const CryptoHandshakeMessage& peer_handshake,
+      CryptoUtils::Priority priority,
+      QuicNegotiatedParameters* out_params,
+      std::string* error_details) const;
+
+ private:
+  // Congestion control feedback type.
+  CryptoTagVector congestion_control_;
+  // Idle connection state lifetime
+  QuicTime::Delta idle_connection_state_lifetime_;
+  // Keepalive timeout, or 0 to turn off keepalive probes
+  QuicTime::Delta keepalive_timeout_;
+};
+
+}  // namespace net
+
+#endif  // NET_QUIC_QUIC_CONFIG_H_