Persist server's crypto config data to disk cache for 0-RTT

net/quic/crypto/quic_server_info.h

 // Copyright 2014 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_CRYPTO_QUIC_SERVER_INFO_H_
 #define NET_QUIC_CRYPTO_QUIC_SERVER_INFO_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 26 matching lines @@
   // the current thread when ready.
   //
   // Only a single callback can be outstanding at a given time and, in the
   // event that WaitForDataReady returns OK, it's the caller's responsibility
   // to delete |callback|.
   //
   // |callback| may be NULL, in which case ERR_IO_PENDING may still be returned
   // but, obviously, a callback will never be made.
   virtual int WaitForDataReady(const CompletionCallback& callback) = 0;
 
+  // Returns true if data is loaded from disk cache and ready (WaitForDataReady
+  // doesn't have a pending callback).
+  virtual bool IsDataReady() = 0;
+
   // Persist allows for the server information to be updated for future users.
   // This is a fire and forget operation: the caller may drop its reference
   // from this object and the store operation will still complete. This can
   // only be called once WaitForDataReady has returned OK or called its
   // callback.
   virtual void Persist() = 0;
 
   struct State {
     State();
     ~State();
 
     void Clear();
 
-    // TODO(rtenneti): figure out what are the data members.
-    std::vector<std::string> data;
+    void SetConfigData(std::string* server_config,

[wtc, 2014/02/19 02:24:11]

This function name is confusing.

+                       std::string* source_address_token,
+                       std::vector<std::string>* certs,
+                       std::string* server_config_sig);
+
+    // This class matches QuicClientCryptoConfig::CachedState.
+    std::string* server_config;         // A serialized handshake message.
+    std::string* source_address_token;  // An opaque proof of IP ownership.
+    std::vector<std::string>* certs;    // A list of certificates in leaf-first
+                                        // order.
+    std::string* server_config_sig;     // A signature of |server_config_|.
 
    private:
     DISALLOW_COPY_AND_ASSIGN(State);
   };
 
   // Once the data is ready, it can be read using the following members. These
   // members can then be updated before calling |Persist|.
   const State& state() const;
   State* mutable_state();
 
  protected:
-  // Parse parses an opaque blob of data and fills out the public member fields
-  // of this object. It returns true iff the parse was successful. The public
-  // member fields will be set to something sane in any case.
+  // Parse parses pickled data and fills out the public member fields of this
+  // object. It returns true iff the parse was successful. The public member
+  // fields will be set to something sane in any case.
   bool Parse(const std::string& data);
   std::string Serialize() const;
   State state_;
 
  private:
   // ParseInner is a helper function for Parse.
   bool ParseInner(const std::string& data);
 
   // This is the QUIC server hostname for which we restore the crypto_config.
   const std::string hostname_;
-  base::WeakPtrFactory<QuicServerInfo> weak_factory_;
 };
 
 class QuicServerInfoFactory {
  public:
   virtual ~QuicServerInfoFactory();
 
   // GetForHost returns a fresh, allocated QuicServerInfo for the given
   // hostname or NULL on failure.
   virtual QuicServerInfo* GetForHost(const std::string& hostname) = 0;
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_CRYPTO_QUIC_SERVER_INFO_H_