Log server advertised protos and the selected

net/socket/ssl_client_socket.h

 // Copyright (c) 2011 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_SOCKET_SSL_CLIENT_SOCKET_H_
 #define NET_SOCKET_SSL_CLIENT_SOCKET_H_
 #pragma once
 
 #include <string>
 
@@ skipping 103 matching lines @@
   virtual void GetSSLCertRequestInfo(
       SSLCertRequestInfo* cert_request_info) = 0;
 
   // Get the application level protocol that we negotiated with the server.
   // *proto is set to the resulting protocol (n.b. that the string may have
   // embedded NULs).
   //   kNextProtoUnsupported: *proto is cleared.
   //   kNextProtoNegotiated:  *proto is set to the negotiated protocol.
   //   kNextProtoNoOverlap:   *proto is set to the first protocol in the
   //                          supported list.
-  virtual NextProtoStatus GetNextProto(std::string* proto) = 0;
+  // *server_protos is set to the server advertised protocols.
+  virtual NextProtoStatus GetNextProto(std::string* proto,
+                                       std::string* server_protos) = 0;
 
   static NextProto NextProtoFromString(const std::string& proto_string);
 
+  static const char* NextProtoStatusToString(
+      const SSLClientSocket::NextProtoStatus status);
+
+  // Can be used with the second argument(|server_protos|) of |GetNextProto| to
+  // construct a comma separated string of server advertised protocols.
+  static std::string ServerProtosToString(const std::string& server_protos);
+
   static bool IgnoreCertError(int error, int load_flags);
 
   virtual bool was_npn_negotiated() const;
 
   virtual bool set_was_npn_negotiated(bool negotiated);
 
   virtual void UseDNSSEC(DNSSECProvider*) { }
 
   virtual bool was_spdy_negotiated() const;
 
   virtual bool set_was_spdy_negotiated(bool negotiated);
 
  private:
   // True if NPN was responded to, independent of selecting SPDY or HTTP.
   bool was_npn_negotiated_;
   // True if NPN successfully negotiated SPDY.
   bool was_spdy_negotiated_;
 };
 
 }  // namespace net
 
 #endif  // NET_SOCKET_SSL_CLIENT_SOCKET_H_