Plumb connection attempts from (non-proxy) ConnectJobs to HttpNetworkTransaction.

net/socket/client_socket_handle.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_SOCKET_CLIENT_SOCKET_HANDLE_H_
 #define NET_SOCKET_CLIENT_SOCKET_HANDLE_H_
 
 #include <string>
 
 #include "base/logging.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/time/time.h"
 #include "net/base/completion_callback.h"
+#include "net/base/ip_endpoint.h"
 #include "net/base/load_states.h"
 #include "net/base/load_timing_info.h"
 #include "net/base/net_errors.h"
 #include "net/base/net_export.h"
 #include "net/base/net_log.h"
 #include "net/base/request_priority.h"
 #include "net/http/http_response_info.h"
 #include "net/socket/client_socket_pool.h"
 #include "net/socket/stream_socket.h"
 
 namespace net {
 
 // A container for a StreamSocket.
 //
 // The handle's |group_name| uniquely identifies the origin and type of the
 // connection.  It is used by the ClientSocketPool to group similar connected
 // client socket objects.
 //
 class NET_EXPORT ClientSocketHandle {
  public:
   enum SocketReuseType {
     UNUSED = 0,   // unused socket that just finished connecting
     UNUSED_IDLE,  // unused socket that has been idle for awhile
     REUSED_IDLE,  // previously used socket
     NUM_TYPES,
   };
 
+  // A record of a TCP connection attempt made to connect to the host.

[Ryan Hamilton, 2015/03/24 19:20:19]

Can you update the comment to mention TLS errors?

[Deprecated (see juliatuttle), 2015/04/08 19:17:19]

Done.

+  struct ConnectionAttempt {
+    ConnectionAttempt(const IPEndPoint endpoint, int result)
+        : endpoint(endpoint), result(result) {}
+
+    // Address and port the socket layer attempted to connect to.
+    IPEndPoint endpoint;
+
+    // Net error indicating the result of that attempt.
+    int result;
+  };
+
+  typedef std::vector<ConnectionAttempt> ConnectionAttempts;
+
   ClientSocketHandle();
   ~ClientSocketHandle();
 
   // Initializes a ClientSocketHandle object, which involves talking to the
   // ClientSocketPool to obtain a connected socket, possibly reusing one.  This
   // method returns either OK or ERR_IO_PENDING.  On ERR_IO_PENDING, |priority|
   // is used to determine the placement in ClientSocketPool's wait list.
   //
   // If this method succeeds, then the socket member will be set to an existing
   // connected socket if an existing connected socket was available to reuse,
@@ skipping 77 matching lines @@
   void set_reuse_type(SocketReuseType reuse_type) { reuse_type_ = reuse_type; }
   void set_idle_time(base::TimeDelta idle_time) { idle_time_ = idle_time; }
   void set_pool_id(int id) { pool_id_ = id; }
   void set_is_ssl_error(bool is_ssl_error) { is_ssl_error_ = is_ssl_error; }
   void set_ssl_error_response_info(const HttpResponseInfo& ssl_error_state) {
     ssl_error_response_info_ = ssl_error_state;
   }
   void set_pending_http_proxy_connection(ClientSocketHandle* connection) {
     pending_http_proxy_connection_.reset(connection);
   }
+  void set_connection_attempts(ConnectionAttempts attempts) {
+    connection_attempts_ = attempts;
+  }
 
   // Only valid if there is no |socket_|.
   bool is_ssl_error() const {
     DCHECK(socket_.get() == NULL);
     return is_ssl_error_;
   }
   // On an ERR_PROXY_AUTH_REQUESTED error, the |headers| and |auth_challenge|
   // fields are filled in. On an ERR_SSL_CLIENT_AUTH_CERT_NEEDED error,
   // the |cert_request_info| field is set.
   const HttpResponseInfo& ssl_error_response_info() const {
     return ssl_error_response_info_;
   }
   ClientSocketHandle* release_pending_http_proxy_connection() {
     return pending_http_proxy_connection_.release();
   }
+  const ConnectionAttempts& connection_attempts() {
+    return connection_attempts_;
+  }
 
   StreamSocket* socket() { return socket_.get(); }
 
   // SetSocket() must be called with a new socket before this handle
   // is destroyed if is_initialized() is true.
   scoped_ptr<StreamSocket> PassSocket();
 
   // These may only be used if is_initialized() is true.
   const std::string& group_name() const { return group_name_; }
   int id() const { return pool_id_; }
@@ skipping 29 matching lines @@
   scoped_ptr<StreamSocket> socket_;
   std::string group_name_;
   SocketReuseType reuse_type_;
   CompletionCallback callback_;
   CompletionCallback user_callback_;
   base::TimeDelta idle_time_;
   int pool_id_;  // See ClientSocketPool::ReleaseSocket() for an explanation.
   bool is_ssl_error_;
   HttpResponseInfo ssl_error_response_info_;
   scoped_ptr<ClientSocketHandle> pending_http_proxy_connection_;
+  std::vector<ConnectionAttempt> connection_attempts_;
   base::TimeTicks init_time_;
   base::TimeDelta setup_time_;
 
   NetLog::Source requesting_source_;
 
   // Timing information is set when a connection is successfully established.
   LoadTimingInfo::ConnectTiming connect_timing_;
 
   DISALLOW_COPY_AND_ASSIGN(ClientSocketHandle);
 };
@@ skipping 21 matching lines @@
     user_callback_ = callback;
   } else {
     HandleInitCompletion(rv);
   }
   return rv;
 }
 
 }  // namespace net
 
 #endif  // NET_SOCKET_CLIENT_SOCKET_HANDLE_H_