Add DefaultListenSocket.

net/base/default_listen_socket.h

Index: net/base/default_listen_socket.h
diff --git a/net/base/tcp_listen_socket.h b/net/base/default_listen_socket.h
similarity index 60%
copy from net/base/tcp_listen_socket.h
copy to net/base/default_listen_socket.h
index c13b8a48740993b2bc068dfcfb35f4fa5c960919..475417abf18637d14418ff8b1d65446a8b1716c8 100644
--- a/net/base/tcp_listen_socket.h
+++ b/net/base/default_listen_socket.h
@@ -2,14 +2,17 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// TCP/IP server that handles IO asynchronously in the specified MessageLoop.
-// These objects are NOT thread safe.  They use WSAEVENT handles to monitor
-// activity in a given MessageLoop.  This means that callbacks will
-// happen in that loop's thread always and that all other methods (including
-// constructors and destructors) should also be called from the same thread.
-
-#ifndef NET_BASE_TCP_LISTEN_SOCKET_H_
-#define NET_BASE_TCP_LISTEN_SOCKET_H_
+// Default (abstract) listen socket implementation that can be used by clients
+// to implement more specific classes like TCPListenSocket and UnixDomainSocket.
+
+// Server that handles IO asynchronously in the specified MessageLoop. These
+// objects are NOT thread safe. They use WSAEVENT handles to monitor activity
+// in a given MessageLoop. This means that callbacks will happen in that loop's
+// thread always and that all other methods (including constructors and
+// destructors) should also be called from the same thread.
+
+#ifndef NET_BASE_DEFAULT_LISTEN_SOCKET_H_
+#define NET_BASE_DEFAULT_LISTEN_SOCKET_H_
 #pragma once
 
 #include "build/build_config.h"
@@ -35,25 +38,13 @@ typedef int SOCKET;
 
 namespace net {
 
-// Implements a raw socket interface
-class NET_EXPORT TCPListenSocket : public ListenSocket,
+class NET_EXPORT DefaultListenSocket
+    : public ListenSocket,
 #if defined(OS_WIN)
-                                public base::win::ObjectWatcher::Delegate {
+      public base::win::ObjectWatcher::Delegate {
 #elif defined(OS_POSIX)
-                                public MessageLoopForIO::Watcher {
+      public MessageLoopForIO::Watcher {
 #endif
- public:
-  // Listen on port for the specified IP address.  Use 127.0.0.1 to only
-  // accept local connections.
-  static TCPListenSocket* CreateAndListen(std::string ip, int port,
-                                          ListenSocketDelegate* del);
-
-  // NOTE: This is for unit test use only!
-  // Pause/Resume calling Read().  Note that ResumeReads() will also call
-  // Read() if there is anything to read.
-  void PauseReads();
-  void ResumeReads();
-
  protected:
   enum WaitState {
     NOT_WAITING      = 0,
@@ -64,16 +55,15 @@ class NET_EXPORT TCPListenSocket : public ListenSocket,
   static const SOCKET kInvalidSocket;
   static const int kSocketError;
 
-  TCPListenSocket(SOCKET s, ListenSocketDelegate* del);
-  virtual ~TCPListenSocket();
-  static SOCKET CreateAndBind(std::string ip, int port);
-  // if valid, returned SOCKET is non-blocking
-  static SOCKET Accept(SOCKET s);
+  DefaultListenSocket(SOCKET s, ListenSocketDelegate* del);
+  virtual ~DefaultListenSocket();
+
+  static SOCKET AcceptInternal(SOCKET s);
 
   virtual void SendInternal(const char* bytes, int len) OVERRIDE;
 
   virtual void Listen();
-  virtual void Accept();
+  virtual void Accept() = 0;
   virtual void Read();
   virtual void Close();
   virtual void CloseSocket(SOCKET s);
@@ -97,15 +87,22 @@ class NET_EXPORT TCPListenSocket : public ListenSocket,
   MessageLoopForIO::FileDescriptorWatcher watcher_;
 #endif
 
-  SOCKET socket_;
+  const SOCKET socket_;
 
  private:
+  // NOTE: This is for unit test use only!
+  // Pause/Resume calling Read().  Note that ResumeReads() will also call
+  // Read() if there is anything to read.
+  friend class TransportClientSocketTest;
+  void PauseReads();
+  void ResumeReads();
+
   bool reads_paused_;
   bool has_pending_reads_;
 
-  DISALLOW_COPY_AND_ASSIGN(TCPListenSocket);
+  DISALLOW_COPY_AND_ASSIGN(DefaultListenSocket);
 };
 
 }  // namespace net
 
-#endif  // NET_BASE_TCP_LISTEN_SOCKET_H_
+#endif  // NET_BASE_DEFAULT_LISTEN_SOCKET_H_