Upstream changes making ListenSocket an abstract class.

This is part of Chrome for Android upstreaming.

This CL makes ListenSocket an abstract class instead of a concrete class
implementing a TCP Listen Socket. This abstraction will be used later to make
HttpServer seamlessly operate on TCP sockets and Unix domain sockets (will be
upstreamed in a separate CL).

The TCP Listen socket implementation, previously in listen_socket.{cc,h}, is
now in tcp_listen_socket.{cc,h}.

TEST=net_unittests


Review URL: http://codereview.chromium.org/10108015

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@133480 0039d316-1c4b-4281-b951-d872f2087c98

13 files changed, 543 insertions, 480 deletions

diff --git a/chrome_frame/test/test_server.cc b/chrome_frame/test/test_server.cc
index ea4923e..b38b143 100644
--- a/chrome_frame/test/test_server.cc
+++ b/chrome_frame/test/test_server.cc
@@ -14,6 +14,7 @@
 #include "base/stringprintf.h"
 #include "base/utf_string_conversions.h"
 #include "chrome_frame/test/test_server.h"
+#include "net/base/tcp_listen_socket.h"
 #include "net/base/winsock_init.h"
 #include "net/http/http_util.h"
 
@@ -132,7 +133,7 @@ SimpleWebServer::SimpleWebServer(int port) {
   CHECK(MessageLoop::current()) << "SimpleWebServer requires a message loop";
   net::EnsureWinsockInit();
   AddResponse(&quit_);
-  server_ = net::ListenSocket::Listen("127.0.0.1", port, this);
+  server_ = net::TCPListenSocket::CreateAndListen("127.0.0.1", port, this);
   DCHECK(server_.get() != NULL);
 }
 
@@ -236,7 +237,8 @@ HTTPTestServer::HTTPTestServer(int port, const std::wstring& address,
                                FilePath root_dir)
     : port_(port), address_(address), root_dir_(root_dir) {
   net::EnsureWinsockInit();
-  server_ = net::ListenSocket::Listen(WideToUTF8(address), port, this);
+  server_ =
+      net::TCPListenSocket::CreateAndListen(WideToUTF8(address), port, this);
 }
 
 HTTPTestServer::~HTTPTestServer() {
diff --git a/chrome_frame/test/test_server.h b/chrome_frame/test/test_server.h
index 50ddf37..2fef7d2 100644
--- a/chrome_frame/test/test_server.h
+++ b/chrome_frame/test/test_server.h
@@ -40,6 +40,7 @@
 
 #include "base/basictypes.h"
 #include "base/file_util.h"
+#include "base/message_loop.h"
 #include "net/base/listen_socket.h"
 
 namespace test_server {
diff --git a/net/base/listen_socket.cc b/net/base/listen_socket.cc
index c600594..499bb76 100644
--- a/net/base/listen_socket.cc
+++ b/net/base/listen_socket.cc
@@ -2,331 +2,22 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "build/build_config.h"
-
-#if defined(OS_WIN)
-// winsock2.h must be included first in order to ensure it is included before
-// windows.h.
-#include <winsock2.h>
-#elif defined(OS_POSIX)
-#include <errno.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include "net/base/net_errors.h"
-#endif
-
-#include "base/eintr_wrapper.h"
-#include "base/sys_byteorder.h"
-#include "base/threading/platform_thread.h"
-#include "net/base/net_util.h"
 #include "net/base/listen_socket.h"
 
-#if defined(OS_WIN)
-typedef int socklen_t;
-#endif  // defined(OS_WIN)
-
 namespace net {
 
-namespace {
+ListenSocket::ListenSocket(ListenSocketDelegate* del) : socket_delegate_(del) {}
 
-const int kReadBufSize = 4096;
-
-}  // namespace
-
-#if defined(OS_WIN)
-const SOCKET ListenSocket::kInvalidSocket = INVALID_SOCKET;
-const int ListenSocket::kSocketError = SOCKET_ERROR;
-#elif defined(OS_POSIX)
-const SOCKET ListenSocket::kInvalidSocket = -1;
-const int ListenSocket::kSocketError = -1;
-#endif
-
-ListenSocket* ListenSocket::Listen(std::string ip, int port,
-                                   ListenSocketDelegate* del) {
-  SOCKET s = Listen(ip, port);
-  if (s == kInvalidSocket) {
-    // TODO(erikkay): error handling
-  } else {
-    ListenSocket* sock = new ListenSocket(s, del);
-    sock->Listen();
-    return sock;
-  }
-  return NULL;
-}
+ListenSocket::~ListenSocket() {}
 
 void ListenSocket::Send(const char* bytes, int len, bool append_linefeed) {
   SendInternal(bytes, len);
-  if (append_linefeed) {
+  if (append_linefeed)
     SendInternal("\r\n", 2);
-  }
 }
 
 void ListenSocket::Send(const std::string& str, bool append_linefeed) {
   Send(str.data(), static_cast<int>(str.length()), append_linefeed);
 }
 
-void ListenSocket::PauseReads() {
-  DCHECK(!reads_paused_);
-  reads_paused_ = true;
-}
-
-void ListenSocket::ResumeReads() {
-  DCHECK(reads_paused_);
-  reads_paused_ = false;
-  if (has_pending_reads_) {
-    has_pending_reads_ = false;
-    Read();
-  }
-}
-
-ListenSocket::ListenSocket(SOCKET s, ListenSocketDelegate *del)
-    : socket_(s),
-      socket_delegate_(del),
-      reads_paused_(false),
-      has_pending_reads_(false) {
-#if defined(OS_WIN)
-  socket_event_ = WSACreateEvent();
-  // TODO(ibrar): error handling in case of socket_event_ == WSA_INVALID_EVENT
-  WatchSocket(NOT_WAITING);
-#elif defined(OS_POSIX)
-  wait_state_ = NOT_WAITING;
-#endif
-}
-
-ListenSocket::~ListenSocket() {
-#if defined(OS_WIN)
-  if (socket_event_) {
-    WSACloseEvent(socket_event_);
-    socket_event_ = WSA_INVALID_EVENT;
-  }
-#endif
-  CloseSocket(socket_);
-}
-
-SOCKET ListenSocket::Listen(std::string ip, int port) {
-  SOCKET s = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
-  if (s != kInvalidSocket) {
-#if defined(OS_POSIX)
-    // Allow rapid reuse.
-    static const int kOn = 1;
-    setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &kOn, sizeof(kOn));
-#endif
-    sockaddr_in addr;
-    memset(&addr, 0, sizeof(addr));
-    addr.sin_family = AF_INET;
-    addr.sin_addr.s_addr = inet_addr(ip.c_str());
-    addr.sin_port = base::HostToNet16(port);
-    if (bind(s, reinterpret_cast<sockaddr*>(&addr), sizeof(addr))) {
-#if defined(OS_WIN)
-      closesocket(s);
-#elif defined(OS_POSIX)
-      close(s);
-#endif
-      s = kInvalidSocket;
-    }
-  }
-  return s;
-}
-
-SOCKET ListenSocket::Accept(SOCKET s) {
-  sockaddr_in from;
-  socklen_t from_len = sizeof(from);
-  SOCKET conn =
-      HANDLE_EINTR(accept(s, reinterpret_cast<sockaddr*>(&from), &from_len));
-  if (conn != kInvalidSocket) {
-    SetNonBlocking(conn);
-  }
-  return conn;
-}
-
-void ListenSocket::SendInternal(const char* bytes, int len) {
-  char* send_buf = const_cast<char *>(bytes);
-  int len_left = len;
-  while (true) {
-    int sent = HANDLE_EINTR(send(socket_, send_buf, len_left, 0));
-    if (sent == len_left) {  // A shortcut to avoid extraneous checks.
-      break;
-    }
-    if (sent == kSocketError) {
-#if defined(OS_WIN)
-      if (WSAGetLastError() != WSAEWOULDBLOCK) {
-        LOG(ERROR) << "send failed: WSAGetLastError()==" << WSAGetLastError();
-#elif defined(OS_POSIX)
-      if (errno != EWOULDBLOCK && errno != EAGAIN) {
-        LOG(ERROR) << "send failed: errno==" << errno;
-#endif
-        break;
-      }
-      // Otherwise we would block, and now we have to wait for a retry.
-      // Fall through to PlatformThread::YieldCurrentThread()
-    } else {
-      // sent != len_left according to the shortcut above.
-      // Shift the buffer start and send the remainder after a short while.
-      send_buf += sent;
-      len_left -= sent;
-    }
-    base::PlatformThread::YieldCurrentThread();
-  }
-}
-
-void ListenSocket::Listen() {
-  int backlog = 10;  // TODO(erikkay): maybe don't allow any backlog?
-  listen(socket_, backlog);
-  // TODO(erikkay): error handling
-#if defined(OS_POSIX)
-  WatchSocket(WAITING_ACCEPT);
-#endif
-}
-
-void ListenSocket::Accept() {
-  SOCKET conn = Accept(socket_);
-  if (conn != kInvalidSocket) {
-    scoped_refptr<ListenSocket> sock(
-        new ListenSocket(conn, socket_delegate_));
-    // it's up to the delegate to AddRef if it wants to keep it around
-#if defined(OS_POSIX)
-    sock->WatchSocket(WAITING_READ);
-#endif
-    socket_delegate_->DidAccept(this, sock);
-  } else {
-    // TODO(ibrar): some error handling required here
-  }
-}
-
-void ListenSocket::Read() {
-  char buf[kReadBufSize + 1];  // +1 for null termination
-  int len;
-  do {
-    len = HANDLE_EINTR(recv(socket_, buf, kReadBufSize, 0));
-    if (len == kSocketError) {
-#if defined(OS_WIN)
-      int err = WSAGetLastError();
-      if (err == WSAEWOULDBLOCK) {
-#elif defined(OS_POSIX)
-      if (errno == EWOULDBLOCK || errno == EAGAIN) {
-#endif
-        break;
-      } else {
-        // TODO(ibrar): some error handling required here
-        break;
-      }
-    } else if (len == 0) {
-      // In Windows, Close() is called by OnObjectSignaled.  In POSIX, we need
-      // to call it here.
-#if defined(OS_POSIX)
-      Close();
-#endif
-    } else {
-      // TODO(ibrar): maybe change DidRead to take a length instead
-      DCHECK_GT(len, 0);
-      DCHECK_LE(len, kReadBufSize);
-      buf[len] = 0;  // already create a buffer with +1 length
-      socket_delegate_->DidRead(this, buf, len);
-    }
-  } while (len == kReadBufSize);
-}
-
-void ListenSocket::Close() {
-#if defined(OS_POSIX)
-  if (wait_state_ == NOT_WAITING)
-    return;
-  wait_state_ = NOT_WAITING;
-#endif
-  UnwatchSocket();
-  socket_delegate_->DidClose(this);
-}
-
-void ListenSocket::CloseSocket(SOCKET s) {
-  if (s && s != kInvalidSocket) {
-    UnwatchSocket();
-#if defined(OS_WIN)
-    closesocket(s);
-#elif defined(OS_POSIX)
-    close(s);
-#endif
-  }
-}
-
-void ListenSocket::WatchSocket(WaitState state) {
-#if defined(OS_WIN)
-  WSAEventSelect(socket_, socket_event_, FD_ACCEPT | FD_CLOSE | FD_READ);
-  watcher_.StartWatching(socket_event_, this);
-#elif defined(OS_POSIX)
-  // Implicitly calls StartWatchingFileDescriptor().
-  MessageLoopForIO::current()->WatchFileDescriptor(
-      socket_, true, MessageLoopForIO::WATCH_READ, &watcher_, this);
-  wait_state_ = state;
-#endif
-}
-
-void ListenSocket::UnwatchSocket() {
-#if defined(OS_WIN)
-  watcher_.StopWatching();
-#elif defined(OS_POSIX)
-  watcher_.StopWatchingFileDescriptor();
-#endif
-}
-
-// TODO(ibrar): We can add these functions into OS dependent files
-#if defined(OS_WIN)
-// MessageLoop watcher callback
-void ListenSocket::OnObjectSignaled(HANDLE object) {
-  WSANETWORKEVENTS ev;
-  if (kSocketError == WSAEnumNetworkEvents(socket_, socket_event_, &ev)) {
-    // TODO
-    return;
-  }
-
-  // The object was reset by WSAEnumNetworkEvents.  Watch for the next signal.
-  watcher_.StartWatching(object, this);
-
-  if (ev.lNetworkEvents == 0) {
-    // Occasionally the event is set even though there is no new data.
-    // The net seems to think that this is ignorable.
-    return;
-  }
-  if (ev.lNetworkEvents & FD_ACCEPT) {
-    Accept();
-  }
-  if (ev.lNetworkEvents & FD_READ) {
-    if (reads_paused_) {
-      has_pending_reads_ = true;
-    } else {
-      Read();
-    }
-  }
-  if (ev.lNetworkEvents & FD_CLOSE) {
-    Close();
-  }
-}
-#elif defined(OS_POSIX)
-void ListenSocket::OnFileCanReadWithoutBlocking(int fd) {
-  switch (wait_state_) {
-    case WAITING_ACCEPT:
-      Accept();
-      break;
-    case WAITING_READ:
-      if (reads_paused_) {
-        has_pending_reads_ = true;
-      } else {
-        Read();
-      }
-      break;
-    default:
-      // Close() is called by Read() in the Linux case.
-      NOTREACHED();
-      break;
-  }
-}
-
-void ListenSocket::OnFileCanWriteWithoutBlocking(int fd) {
-  // MessagePumpLibevent callback, we don't listen for write events
-  // so we shouldn't ever reach here.
-  NOTREACHED();
-}
-
-#endif
-
 }  // namespace net
diff --git a/net/base/listen_socket.h b/net/base/listen_socket.h
index 8223767..f102462 100644
--- a/net/base/listen_socket.h
+++ b/net/base/listen_socket.h
@@ -1,47 +1,26 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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.
 
-// 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.
+// Abstract socket server that handles IO asynchronously in the specified
+// MessageLoop.
 
 #ifndef NET_BASE_LISTEN_SOCKET_H_
 #define NET_BASE_LISTEN_SOCKET_H_
 #pragma once
 
-#include "build/build_config.h"
-
-#if defined(OS_WIN)
-#include <winsock2.h>
-#endif
 #include <string>
-#if defined(OS_WIN)
-#include "base/win/object_watcher.h"
-#elif defined(OS_POSIX)
-#include "base/message_loop.h"
-#endif
 
 #include "base/basictypes.h"
-#include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
+#include "build/build_config.h"
 #include "net/base/net_export.h"
 
-#if defined(OS_POSIX)
-typedef int SOCKET;
-#endif
-
 namespace net {
 
-// Implements a raw socket interface
-class NET_EXPORT ListenSocket : public base::RefCountedThreadSafe<ListenSocket>,
-#if defined(OS_WIN)
-                                public base::win::ObjectWatcher::Delegate {
-#elif defined(OS_POSIX)
-                                public MessageLoopForIO::Watcher {
-#endif
+// Defines a socket interface for a server.
+class NET_EXPORT ListenSocket
+    : public base::RefCountedThreadSafe<ListenSocket> {
  public:
   // TODO(erikkay): this delegate should really be split into two parts
   // to split up the listener from the connected socket.  Perhaps this class
@@ -53,79 +32,28 @@ class NET_EXPORT ListenSocket : public base::RefCountedThreadSafe<ListenSocket>,
     // server is the original listening Socket, connection is the new
     // Socket that was created.  Ownership of connection is transferred
     // to the delegate with this call.
-    virtual void DidAccept(ListenSocket *server, ListenSocket *connection) = 0;
+    virtual void DidAccept(ListenSocket *server,
+                           ListenSocket *connection) = 0;
     virtual void DidRead(ListenSocket *connection,
                          const char* data,
                          int len) = 0;
     virtual void DidClose(ListenSocket *sock) = 0;
   };
 
-  // Listen on port for the specified IP address.  Use 127.0.0.1 to only
-  // accept local connections.
-  static ListenSocket* Listen(std::string ip, int port,
-                              ListenSocketDelegate* del);
-
   // Send data to the socket.
   void Send(const char* bytes, int len, bool append_linefeed = false);
   void Send(const std::string& str, bool append_linefeed = false);
 
-  // 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:
-  friend class base::RefCountedThreadSafe<ListenSocket>;
-
-  enum WaitState {
-    NOT_WAITING      = 0,
-    WAITING_ACCEPT   = 1,
-    WAITING_READ     = 2
-  };
-
-  static const SOCKET kInvalidSocket;
-  static const int kSocketError;
-
-  ListenSocket(SOCKET s, ListenSocketDelegate* del);
+  ListenSocket(ListenSocketDelegate* del);
   virtual ~ListenSocket();
-  static SOCKET Listen(std::string ip, int port);
-  // if valid, returned SOCKET is non-blocking
-  static SOCKET Accept(SOCKET s);
-
-  virtual void SendInternal(const char* bytes, int len);
 
-  virtual void Listen();
-  virtual void Accept();
-  virtual void Read();
-  virtual void Close();
-  virtual void CloseSocket(SOCKET s);
+  virtual void SendInternal(const char* bytes, int len) = 0;
 
-  // Pass any value in case of Windows, because in Windows
-  // we are not using state.
-  void WatchSocket(WaitState state);
-  void UnwatchSocket();
-
-#if defined(OS_WIN)
-  // ObjectWatcher delegate
-  virtual void OnObjectSignaled(HANDLE object);
-  base::win::ObjectWatcher watcher_;
-  HANDLE socket_event_;
-#elif defined(OS_POSIX)
-  // Called by MessagePumpLibevent when the socket is ready to do I/O
-  virtual void OnFileCanReadWithoutBlocking(int fd) OVERRIDE;
-  virtual void OnFileCanWriteWithoutBlocking(int fd) OVERRIDE;
-  WaitState wait_state_;
-  // The socket's libevent wrapper
-  MessageLoopForIO::FileDescriptorWatcher watcher_;
-#endif
-
-  SOCKET socket_;
-  ListenSocketDelegate *socket_delegate_;
+  ListenSocketDelegate* const socket_delegate_;
 
  private:
-  bool reads_paused_;
-  bool has_pending_reads_;
+  friend class base::RefCountedThreadSafe<ListenSocket>;
 
   DISALLOW_COPY_AND_ASSIGN(ListenSocket);
 };
diff --git a/net/base/tcp_listen_socket.cc b/net/base/tcp_listen_socket.cc
new file mode 100644
index 0000000..dfec16f
--- /dev/null
+++ b/net/base/tcp_listen_socket.cc
@@ -0,0 +1,322 @@
+// 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.
+
+#include "build/build_config.h"
+
+#if defined(OS_WIN)
+// winsock2.h must be included first in order to ensure it is included before
+// windows.h.
+#include <winsock2.h>
+#elif defined(OS_POSIX)
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include "net/base/net_errors.h"
+#endif
+
+#include "base/eintr_wrapper.h"
+#include "base/sys_byteorder.h"
+#include "base/threading/platform_thread.h"
+#include "net/base/net_util.h"
+#include "net/base/tcp_listen_socket.h"
+
+#if defined(OS_WIN)
+typedef int socklen_t;
+#endif  // defined(OS_WIN)
+
+namespace net {
+
+namespace {
+
+const int kReadBufSize = 4096;
+
+}  // namespace
+
+#if defined(OS_WIN)
+const SOCKET TCPListenSocket::kInvalidSocket = INVALID_SOCKET;
+const int TCPListenSocket::kSocketError = SOCKET_ERROR;
+#elif defined(OS_POSIX)
+const SOCKET TCPListenSocket::kInvalidSocket = -1;
+const int TCPListenSocket::kSocketError = -1;
+#endif
+
+TCPListenSocket* TCPListenSocket::CreateAndListen(
+    std::string ip, int port, ListenSocket::ListenSocketDelegate *del) {
+  SOCKET s = CreateAndBind(ip, port);
+  if (s == kInvalidSocket) {
+    // TODO(erikkay): error handling
+  } else {
+    TCPListenSocket* sock = new TCPListenSocket(s, del);
+    sock->Listen();
+    return sock;
+  }
+  return NULL;
+}
+
+void TCPListenSocket::PauseReads() {
+  DCHECK(!reads_paused_);
+  reads_paused_ = true;
+}
+
+void TCPListenSocket::ResumeReads() {
+  DCHECK(reads_paused_);
+  reads_paused_ = false;
+  if (has_pending_reads_) {
+    has_pending_reads_ = false;
+    Read();
+  }
+}
+
+TCPListenSocket::TCPListenSocket(SOCKET s,
+                                 ListenSocket::ListenSocketDelegate *del)
+    : ListenSocket(del),
+      socket_(s),
+      reads_paused_(false),
+      has_pending_reads_(false) {
+#if defined(OS_WIN)
+  socket_event_ = WSACreateEvent();
+  // TODO(ibrar): error handling in case of socket_event_ == WSA_INVALID_EVENT
+  WatchSocket(NOT_WAITING);
+#elif defined(OS_POSIX)
+  wait_state_ = NOT_WAITING;
+#endif
+}
+
+TCPListenSocket::~TCPListenSocket() {
+#if defined(OS_WIN)
+  if (socket_event_) {
+    WSACloseEvent(socket_event_);
+    socket_event_ = WSA_INVALID_EVENT;
+  }
+#endif
+  CloseSocket(socket_);
+}
+
+SOCKET TCPListenSocket::CreateAndBind(std::string ip, int port) {
+  SOCKET s = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
+  if (s != kInvalidSocket) {
+#if defined(OS_POSIX)
+    // Allow rapid reuse.
+    static const int kOn = 1;
+    setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &kOn, sizeof(kOn));
+#endif
+    sockaddr_in addr;
+    memset(&addr, 0, sizeof(addr));
+    addr.sin_family = AF_INET;
+    addr.sin_addr.s_addr = inet_addr(ip.c_str());
+    addr.sin_port = base::HostToNet16(port);
+    if (bind(s, reinterpret_cast<sockaddr*>(&addr), sizeof(addr))) {
+#if defined(OS_WIN)
+      closesocket(s);
+#elif defined(OS_POSIX)
+      close(s);
+#endif
+      s = kInvalidSocket;
+    }
+  }
+  return s;
+}
+
+SOCKET TCPListenSocket::Accept(SOCKET s) {
+  sockaddr_in from;
+  socklen_t from_len = sizeof(from);
+  SOCKET conn =
+      HANDLE_EINTR(accept(s, reinterpret_cast<sockaddr*>(&from), &from_len));
+  if (conn != kInvalidSocket) {
+    SetNonBlocking(conn);
+  }
+  return conn;
+}
+
+void TCPListenSocket::SendInternal(const char* bytes, int len) {
+  char* send_buf = const_cast<char *>(bytes);
+  int len_left = len;
+  while (true) {
+    int sent = HANDLE_EINTR(send(socket_, send_buf, len_left, 0));
+    if (sent == len_left) {  // A shortcut to avoid extraneous checks.
+      break;
+    }
+    if (sent == kSocketError) {
+#if defined(OS_WIN)
+      if (WSAGetLastError() != WSAEWOULDBLOCK) {
+        LOG(ERROR) << "send failed: WSAGetLastError()==" << WSAGetLastError();
+#elif defined(OS_POSIX)
+      if (errno != EWOULDBLOCK && errno != EAGAIN) {
+        LOG(ERROR) << "send failed: errno==" << errno;
+#endif
+        break;
+      }
+      // Otherwise we would block, and now we have to wait for a retry.
+      // Fall through to PlatformThread::YieldCurrentThread()
+    } else {
+      // sent != len_left according to the shortcut above.
+      // Shift the buffer start and send the remainder after a short while.
+      send_buf += sent;
+      len_left -= sent;
+    }
+    base::PlatformThread::YieldCurrentThread();
+  }
+}
+
+void TCPListenSocket::Listen() {
+  int backlog = 10;  // TODO(erikkay): maybe don't allow any backlog?
+  listen(socket_, backlog);
+  // TODO(erikkay): error handling
+#if defined(OS_POSIX)
+  WatchSocket(WAITING_ACCEPT);
+#endif
+}
+
+void TCPListenSocket::Accept() {
+  SOCKET conn = Accept(socket_);
+  if (conn != kInvalidSocket) {
+    scoped_refptr<TCPListenSocket> sock(
+        new TCPListenSocket(conn, socket_delegate_));
+    // it's up to the delegate to AddRef if it wants to keep it around
+#if defined(OS_POSIX)
+    sock->WatchSocket(WAITING_READ);
+#endif
+    socket_delegate_->DidAccept(this, sock);
+  } else {
+    // TODO(ibrar): some error handling required here
+  }
+}
+
+void TCPListenSocket::Read() {
+  char buf[kReadBufSize + 1];  // +1 for null termination
+  int len;
+  do {
+    len = HANDLE_EINTR(recv(socket_, buf, kReadBufSize, 0));
+    if (len == kSocketError) {
+#if defined(OS_WIN)
+      int err = WSAGetLastError();
+      if (err == WSAEWOULDBLOCK) {
+#elif defined(OS_POSIX)
+      if (errno == EWOULDBLOCK || errno == EAGAIN) {
+#endif
+        break;
+      } else {
+        // TODO(ibrar): some error handling required here
+        break;
+      }
+    } else if (len == 0) {
+      // In Windows, Close() is called by OnObjectSignaled.  In POSIX, we need
+      // to call it here.
+#if defined(OS_POSIX)
+      Close();
+#endif
+    } else {
+      // TODO(ibrar): maybe change DidRead to take a length instead
+      DCHECK_GT(len, 0);
+      DCHECK_LE(len, kReadBufSize);
+      buf[len] = 0;  // already create a buffer with +1 length
+      socket_delegate_->DidRead(this, buf, len);
+    }
+  } while (len == kReadBufSize);
+}
+
+void TCPListenSocket::Close() {
+#if defined(OS_POSIX)
+  if (wait_state_ == NOT_WAITING)
+    return;
+  wait_state_ = NOT_WAITING;
+#endif
+  UnwatchSocket();
+  socket_delegate_->DidClose(this);
+}
+
+void TCPListenSocket::CloseSocket(SOCKET s) {
+  if (s && s != kInvalidSocket) {
+    UnwatchSocket();
+#if defined(OS_WIN)
+    closesocket(s);
+#elif defined(OS_POSIX)
+    close(s);
+#endif
+  }
+}
+
+void TCPListenSocket::WatchSocket(WaitState state) {
+#if defined(OS_WIN)
+  WSAEventSelect(socket_, socket_event_, FD_ACCEPT | FD_CLOSE | FD_READ);
+  watcher_.StartWatching(socket_event_, this);
+#elif defined(OS_POSIX)
+  // Implicitly calls StartWatchingFileDescriptor().
+  MessageLoopForIO::current()->WatchFileDescriptor(
+      socket_, true, MessageLoopForIO::WATCH_READ, &watcher_, this);
+  wait_state_ = state;
+#endif
+}
+
+void TCPListenSocket::UnwatchSocket() {
+#if defined(OS_WIN)
+  watcher_.StopWatching();
+#elif defined(OS_POSIX)
+  watcher_.StopWatchingFileDescriptor();
+#endif
+}
+
+// TODO(ibrar): We can add these functions into OS dependent files
+#if defined(OS_WIN)
+// MessageLoop watcher callback
+void TCPListenSocket::OnObjectSignaled(HANDLE object) {
+  WSANETWORKEVENTS ev;
+  if (kSocketError == WSAEnumNetworkEvents(socket_, socket_event_, &ev)) {
+    // TODO
+    return;
+  }
+
+  // The object was reset by WSAEnumNetworkEvents.  Watch for the next signal.
+  watcher_.StartWatching(object, this);
+
+  if (ev.lNetworkEvents == 0) {
+    // Occasionally the event is set even though there is no new data.
+    // The net seems to think that this is ignorable.
+    return;
+  }
+  if (ev.lNetworkEvents & FD_ACCEPT) {
+    Accept();
+  }
+  if (ev.lNetworkEvents & FD_READ) {
+    if (reads_paused_) {
+      has_pending_reads_ = true;
+    } else {
+      Read();
+    }
+  }
+  if (ev.lNetworkEvents & FD_CLOSE) {
+    Close();
+  }
+}
+#elif defined(OS_POSIX)
+void TCPListenSocket::OnFileCanReadWithoutBlocking(int fd) {
+  switch (wait_state_) {
+    case WAITING_ACCEPT:
+      Accept();
+      break;
+    case WAITING_READ:
+      if (reads_paused_) {
+        has_pending_reads_ = true;
+      } else {
+        Read();
+      }
+      break;
+    default:
+      // Close() is called by Read() in the Linux case.
+      NOTREACHED();
+      break;
+  }
+}
+
+void TCPListenSocket::OnFileCanWriteWithoutBlocking(int fd) {
+  // MessagePumpLibevent callback, we don't listen for write events
+  // so we shouldn't ever reach here.
+  NOTREACHED();
+}
+
+#endif
+
+}  // namespace net
diff --git a/net/base/tcp_listen_socket.h b/net/base/tcp_listen_socket.h
new file mode 100644
index 0000000..57d4679
--- /dev/null
+++ b/net/base/tcp_listen_socket.h
@@ -0,0 +1,112 @@
+// 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.
+
+// 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_
+#pragma once
+
+#include "build/build_config.h"
+
+#if defined(OS_WIN)
+#include <winsock2.h>
+#endif
+#include <string>
+#if defined(OS_WIN)
+#include "base/win/object_watcher.h"
+#elif defined(OS_POSIX)
+#include "base/message_loop.h"
+#endif
+
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "net/base/listen_socket.h"
+#include "net/base/net_export.h"
+
+#if defined(OS_POSIX)
+typedef int SOCKET;
+#endif
+
+namespace net {
+
+// Implements a TCP socket interface. Note that this is ref counted.
+class NET_EXPORT TCPListenSocket : public ListenSocket,
+#if defined(OS_WIN)
+                                   public base::win::ObjectWatcher::Delegate {
+#elif defined(OS_POSIX)
+                                   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,
+    WAITING_ACCEPT   = 1,
+    WAITING_READ     = 2
+  };
+
+  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);
+
+  // Implements ListenSocket::SendInternal.
+  virtual void SendInternal(const char* bytes, int len) OVERRIDE;
+
+  virtual void Listen();
+  virtual void Accept();
+  virtual void Read();
+  virtual void Close();
+  virtual void CloseSocket(SOCKET s);
+
+  // Pass any value in case of Windows, because in Windows
+  // we are not using state.
+  void WatchSocket(WaitState state);
+  void UnwatchSocket();
+
+#if defined(OS_WIN)
+  // ObjectWatcher delegate
+  virtual void OnObjectSignaled(HANDLE object);
+  base::win::ObjectWatcher watcher_;
+  HANDLE socket_event_;
+#elif defined(OS_POSIX)
+  // Called by MessagePumpLibevent when the socket is ready to do I/O
+  virtual void OnFileCanReadWithoutBlocking(int fd) OVERRIDE;
+  virtual void OnFileCanWriteWithoutBlocking(int fd) OVERRIDE;
+  WaitState wait_state_;
+  // The socket's libevent wrapper
+  MessageLoopForIO::FileDescriptorWatcher watcher_;
+#endif
+
+  SOCKET socket_;
+
+ private:
+  bool reads_paused_;
+  bool has_pending_reads_;
+
+  DISALLOW_COPY_AND_ASSIGN(TCPListenSocket);
+};
+
+}  // namespace net
+
+#endif  // NET_BASE_TCP_LISTEN_SOCKET_H_
diff --git a/net/base/listen_socket_unittest.cc b/net/base/tcp_listen_socket_unittest.cc
index 5e3811e..30cde3cb1 100644
--- a/net/base/listen_socket_unittest.cc
+++ b/net/base/tcp_listen_socket_unittest.cc
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "net/base/listen_socket_unittest.h"
+#include "net/base/tcp_listen_socket_unittest.h"
 
 #include <fcntl.h>
 #include <sys/types.h>
@@ -15,7 +15,7 @@
 
 namespace net {
 
-const int ListenSocketTester::kTestPort = 9999;
+const int TCPListenSocketTester::kTestPort = 9999;
 
 static const int kReadBufSize = 1024;
 static const char kHelloWorld[] = "HELLO, WORLD";
@@ -23,7 +23,7 @@ static const int kMaxQueueSize = 20;
 static const char kLoopback[] = "127.0.0.1";
 static const int kDefaultTimeoutMs = 5000;
 
-ListenSocketTester::ListenSocketTester()
+TCPListenSocketTester::TCPListenSocketTester()
     : thread_(NULL),
       loop_(NULL),
       server_(NULL),
@@ -31,14 +31,15 @@ ListenSocketTester::ListenSocketTester()
       cv_(&lock_) {
 }
 
-void ListenSocketTester::SetUp() {
+void TCPListenSocketTester::SetUp() {
   base::Thread::Options options;
   options.message_loop_type = MessageLoop::TYPE_IO;
   thread_.reset(new base::Thread("socketio_test"));
   thread_->StartWithOptions(options);
   loop_ = reinterpret_cast<MessageLoopForIO*>(thread_->message_loop());
 
-  loop_->PostTask(FROM_HERE, base::Bind(&ListenSocketTester::Listen, this));
+  loop_->PostTask(FROM_HERE, base::Bind(
+      &TCPListenSocketTester::Listen, this));
 
   // verify Listen succeeded
   NextAction();
@@ -61,7 +62,7 @@ void ListenSocketTester::SetUp() {
   ASSERT_EQ(ACTION_ACCEPT, last_action_.type());
 }
 
-void ListenSocketTester::TearDown() {
+void TCPListenSocketTester::TearDown() {
 #if defined(OS_WIN)
   ASSERT_EQ(0, closesocket(test_socket_));
 #elif defined(OS_POSIX)
@@ -70,7 +71,8 @@ void ListenSocketTester::TearDown() {
   NextAction();
   ASSERT_EQ(ACTION_CLOSE, last_action_.type());
 
-  loop_->PostTask(FROM_HERE, base::Bind(&ListenSocketTester::Shutdown, this));
+  loop_->PostTask(FROM_HERE, base::Bind(
+      &TCPListenSocketTester::Shutdown, this));
   NextAction();
   ASSERT_EQ(ACTION_SHUTDOWN, last_action_.type());
 
@@ -78,13 +80,14 @@ void ListenSocketTester::TearDown() {
   loop_ = NULL;
 }
 
-void ListenSocketTester::ReportAction(const ListenSocketTestAction& action) {
+void TCPListenSocketTester::ReportAction(
+    const TCPListenSocketTestAction& action) {
   base::AutoLock locked(lock_);
   queue_.push_back(action);
   cv_.Broadcast();
 }
 
-void ListenSocketTester::NextAction() {
+void TCPListenSocketTester::NextAction() {
   base::AutoLock locked(lock_);
   while (queue_.empty())
     cv_.Wait();
@@ -92,7 +95,7 @@ void ListenSocketTester::NextAction() {
   queue_.pop_front();
 }
 
-int ListenSocketTester::ClearTestSocket() {
+int TCPListenSocketTester::ClearTestSocket() {
   char buf[kReadBufSize];
   int len_ret = 0;
   do {
@@ -106,35 +109,35 @@ int ListenSocketTester::ClearTestSocket() {
   return len_ret;
 }
 
-void ListenSocketTester::Shutdown() {
+void TCPListenSocketTester::Shutdown() {
   connection_->Release();
   connection_ = NULL;
   server_->Release();
   server_ = NULL;
-  ReportAction(ListenSocketTestAction(ACTION_SHUTDOWN));
+  ReportAction(TCPListenSocketTestAction(ACTION_SHUTDOWN));
 }
 
-void ListenSocketTester::Listen() {
+void TCPListenSocketTester::Listen() {
   server_ = DoListen();
   if (server_) {
     server_->AddRef();
-    ReportAction(ListenSocketTestAction(ACTION_LISTEN));
+    ReportAction(TCPListenSocketTestAction(ACTION_LISTEN));
   }
 }
 
-void ListenSocketTester::SendFromTester() {
+void TCPListenSocketTester::SendFromTester() {
   connection_->Send(kHelloWorld);
-  ReportAction(ListenSocketTestAction(ACTION_SEND));
+  ReportAction(TCPListenSocketTestAction(ACTION_SEND));
 }
 
-void ListenSocketTester::TestClientSend() {
+void TCPListenSocketTester::TestClientSend() {
   ASSERT_TRUE(Send(test_socket_, kHelloWorld));
   NextAction();
   ASSERT_EQ(ACTION_READ, last_action_.type());
   ASSERT_EQ(last_action_.data(), kHelloWorld);
 }
 
-void ListenSocketTester::TestClientSendLong() {
+void TCPListenSocketTester::TestClientSendLong() {
   size_t hello_len = strlen(kHelloWorld);
   std::string long_string;
   size_t long_len = 0;
@@ -157,9 +160,9 @@ void ListenSocketTester::TestClientSendLong() {
   ASSERT_EQ(read_len, long_len);
 }
 
-void ListenSocketTester::TestServerSend() {
+void TCPListenSocketTester::TestServerSend() {
   loop_->PostTask(FROM_HERE, base::Bind(
-      &ListenSocketTester::SendFromTester, this));
+      &TCPListenSocketTester::SendFromTester, this));
   NextAction();
   ASSERT_EQ(ACTION_SEND, last_action_.type());
   const int buf_len = 200;
@@ -176,7 +179,7 @@ void ListenSocketTester::TestServerSend() {
   ASSERT_STREQ(buf, kHelloWorld);
 }
 
-bool ListenSocketTester::Send(SOCKET sock, const std::string& str) {
+bool TCPListenSocketTester::Send(SOCKET sock, const std::string& str) {
   int len = static_cast<int>(str.length());
   int send_len = HANDLE_EINTR(send(sock, str.data(), len, 0));
   if (send_len == SOCKET_ERROR) {
@@ -188,39 +191,39 @@ bool ListenSocketTester::Send(SOCKET sock, const std::string& str) {
   return true;
 }
 
-void ListenSocketTester::DidAccept(ListenSocket *server,
-                                   ListenSocket *connection) {
+void TCPListenSocketTester::DidAccept(ListenSocket *server,
+                                      ListenSocket *connection) {
   connection_ = connection;
   connection_->AddRef();
-  ReportAction(ListenSocketTestAction(ACTION_ACCEPT));
+  ReportAction(TCPListenSocketTestAction(ACTION_ACCEPT));
 }
 
-void ListenSocketTester::DidRead(ListenSocket *connection,
-                                 const char* data,
-                                 int len) {
+void TCPListenSocketTester::DidRead(ListenSocket *connection,
+                                    const char* data,
+                                    int len) {
   std::string str(data, len);
-  ReportAction(ListenSocketTestAction(ACTION_READ, str));
+  ReportAction(TCPListenSocketTestAction(ACTION_READ, str));
 }
 
-void ListenSocketTester::DidClose(ListenSocket *sock) {
-  ReportAction(ListenSocketTestAction(ACTION_CLOSE));
+void TCPListenSocketTester::DidClose(ListenSocket *sock) {
+  ReportAction(TCPListenSocketTestAction(ACTION_CLOSE));
 }
 
-ListenSocketTester::~ListenSocketTester() {}
+TCPListenSocketTester::~TCPListenSocketTester() {}
 
-ListenSocket* ListenSocketTester::DoListen() {
-  return ListenSocket::Listen(kLoopback, kTestPort, this);
+TCPListenSocket* TCPListenSocketTester::DoListen() {
+  return TCPListenSocket::CreateAndListen(kLoopback, kTestPort, this);
 }
 
-class ListenSocketTest: public PlatformTest {
+class TCPListenSocketTest: public PlatformTest {
  public:
-  ListenSocketTest() {
+  TCPListenSocketTest() {
     tester_ = NULL;
   }
 
   virtual void SetUp() {
     PlatformTest::SetUp();
-    tester_ = new ListenSocketTester();
+    tester_ = new TCPListenSocketTester();
     tester_->SetUp();
   }
 
@@ -230,18 +233,18 @@ class ListenSocketTest: public PlatformTest {
     tester_ = NULL;
   }
 
-  scoped_refptr<ListenSocketTester> tester_;
+  scoped_refptr<TCPListenSocketTester> tester_;
 };
 
-TEST_F(ListenSocketTest, ClientSend) {
+TEST_F(TCPListenSocketTest, ClientSend) {
   tester_->TestClientSend();
 }
 
-TEST_F(ListenSocketTest, ClientSendLong) {
+TEST_F(TCPListenSocketTest, ClientSendLong) {
   tester_->TestClientSendLong();
 }
 
-TEST_F(ListenSocketTest, ServerSend) {
+TEST_F(TCPListenSocketTest, ServerSend) {
   tester_->TestServerSend();
 }
 
diff --git a/net/base/listen_socket_unittest.h b/net/base/tcp_listen_socket_unittest.h
index 1f63bc9..4e24b30 100644
--- a/net/base/listen_socket_unittest.h
+++ b/net/base/tcp_listen_socket_unittest.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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.
 
@@ -23,8 +23,8 @@
 #include "base/synchronization/condition_variable.h"
 #include "base/synchronization/lock.h"
 #include "base/threading/thread.h"
-#include "net/base/listen_socket.h"
 #include "net/base/net_util.h"
+#include "net/base/tcp_listen_socket.h"
 #include "net/base/winsock_init.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ -47,11 +47,11 @@ enum ActionType {
   ACTION_SHUTDOWN = 6
 };
 
-class ListenSocketTestAction {
+class TCPListenSocketTestAction {
  public:
-  ListenSocketTestAction() : action_(ACTION_NONE) {}
-  explicit ListenSocketTestAction(ActionType action) : action_(action) {}
-  ListenSocketTestAction(ActionType action, std::string data)
+  TCPListenSocketTestAction() : action_(ACTION_NONE) {}
+  explicit TCPListenSocketTestAction(ActionType action) : action_(action) {}
+  TCPListenSocketTestAction(ActionType action, std::string data)
       : action_(action),
         data_(data) {}
 
@@ -66,17 +66,17 @@ class ListenSocketTestAction {
 
 // This had to be split out into a separate class because I couldn't
 // make the testing::Test class refcounted.
-class ListenSocketTester :
+class TCPListenSocketTester :
     public ListenSocket::ListenSocketDelegate,
-    public base::RefCountedThreadSafe<ListenSocketTester> {
+    public base::RefCountedThreadSafe<TCPListenSocketTester> {
 
  public:
-  ListenSocketTester();
+  TCPListenSocketTester();
 
   void SetUp();
   void TearDown();
 
-  void ReportAction(const ListenSocketTestAction& action);
+  void ReportAction(const TCPListenSocketTestAction& action);
   void NextAction();
 
   // read all pending data from the test socket
@@ -97,30 +97,29 @@ class ListenSocketTester :
   // ListenSocket::ListenSocketDelegate:
   virtual void DidAccept(ListenSocket *server,
                          ListenSocket *connection) OVERRIDE;
-  virtual void DidRead(ListenSocket *connection,
-                       const char* data,
+  virtual void DidRead(ListenSocket *connection, const char* data,
                        int len) OVERRIDE;
   virtual void DidClose(ListenSocket *sock) OVERRIDE;
 
   scoped_ptr<base::Thread> thread_;
   MessageLoopForIO* loop_;
-  ListenSocket* server_;
+  TCPListenSocket* server_;
   ListenSocket* connection_;
-  ListenSocketTestAction last_action_;
+  TCPListenSocketTestAction last_action_;
 
   SOCKET test_socket_;
   static const int kTestPort;
 
   base::Lock lock_;  // protects |queue_| and wraps |cv_|
   base::ConditionVariable cv_;
-  std::deque<ListenSocketTestAction> queue_;
+  std::deque<TCPListenSocketTestAction> queue_;
 
  protected:
-  friend class base::RefCountedThreadSafe<ListenSocketTester>;
+  friend class base::RefCountedThreadSafe<TCPListenSocketTester>;
 
-  virtual ~ListenSocketTester();
+  virtual ~TCPListenSocketTester();
 
-  virtual ListenSocket* DoListen();
+  virtual TCPListenSocket* DoListen();
 };
 
 }  // namespace net
diff --git a/net/net.gyp b/net/net.gyp
index 6a33eda..21556b4 100644
--- a/net/net.gyp
+++ b/net/net.gyp
@@ -112,9 +112,9 @@
         'base/escape.cc',
         'base/escape.h',
         'base/escape_icu.cc',
-        'base/expiring_cache.h',
         'base/ev_root_ca_metadata.cc',
         'base/ev_root_ca_metadata.h',
+        'base/expiring_cache.h',
         'base/file_stream.cc',
         'base/file_stream.h',
         'base/file_stream_metrics.cc',
@@ -247,6 +247,8 @@
         'base/static_cookie_policy.cc',
         'base/static_cookie_policy.h',
         'base/sys_addrinfo.h',
+        'base/tcp_listen_socket.cc',
+        'base/tcp_listen_socket.h',
         'base/test_data_stream.cc',
         'base/test_data_stream.h',
         'base/test_root_certs.cc',
@@ -1057,8 +1059,6 @@
         'base/host_resolver_impl_unittest.cc',
         'base/ip_endpoint_unittest.cc',
         'base/keygen_handler_unittest.cc',
-        'base/listen_socket_unittest.cc',
-        'base/listen_socket_unittest.h',
         'base/mapped_host_resolver_unittest.cc',
         'base/mime_sniffer_unittest.cc',
         'base/mime_util_unittest.cc',
@@ -1082,6 +1082,8 @@
         'base/ssl_client_auth_cache_unittest.cc',
         'base/ssl_config_service_unittest.cc',
         'base/static_cookie_policy_unittest.cc',
+        'base/tcp_listen_socket_unittest.cc',
+        'base/tcp_listen_socket_unittest.h',
         'base/test_certificate_data.h',
         'base/test_completion_callback_unittest.cc',
         'base/transport_security_state_unittest.cc',
diff --git a/net/server/http_server.cc b/net/server/http_server.cc
index f56ff96..ad1fa6e 100644
--- a/net/server/http_server.cc
+++ b/net/server/http_server.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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.
 
@@ -10,6 +10,7 @@
 #include "base/stringprintf.h"
 #include "base/sys_byteorder.h"
 #include "build/build_config.h"
+#include "net/base/tcp_listen_socket.h"
 #include "net/server/http_connection.h"
 #include "net/server/http_server_request_info.h"
 #include "net/server/web_socket.h"
@@ -20,7 +21,7 @@ HttpServer::HttpServer(const std::string& host,
                        int port,
                        HttpServer::Delegate* del)
     : delegate_(del) {
-  server_ = ListenSocket::Listen(host, port, this);
+  server_ = TCPListenSocket::CreateAndListen(host, port, this);
 }
 
 HttpServer::~HttpServer() {
diff --git a/net/socket/transport_client_socket_unittest.cc b/net/socket/transport_client_socket_unittest.cc
index 4ba4c000..9ab9044 100644
--- a/net/socket/transport_client_socket_unittest.cc
+++ b/net/socket/transport_client_socket_unittest.cc
@@ -1,17 +1,19 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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.
 
 #include "net/socket/tcp_client_socket.h"
 
 #include "base/basictypes.h"
+#include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
 #include "net/base/address_list.h"
 #include "net/base/host_resolver.h"
 #include "net/base/io_buffer.h"
-#include "net/base/listen_socket.h"
 #include "net/base/net_log.h"
 #include "net/base/net_log_unittest.h"
 #include "net/base/net_errors.h"
+#include "net/base/tcp_listen_socket.h"
 #include "net/base/test_completion_callback.h"
 #include "net/base/winsock_init.h"
 #include "net/socket/client_socket_factory.h"
@@ -45,7 +47,7 @@ class TransportClientSocketTest
 
   // Implement ListenSocketDelegate methods
   virtual void DidAccept(ListenSocket* server, ListenSocket* connection) {
-    connected_sock_ = connection;
+    connected_sock_ = reinterpret_cast<TCPListenSocket*>(connection);
   }
   virtual void DidRead(ListenSocket*, const char* str, int len) {
     // TODO(dkegel): this might not be long enough to tickle some bugs.
@@ -90,8 +92,8 @@ class TransportClientSocketTest
   scoped_ptr<StreamSocket> sock_;
 
  private:
-  scoped_refptr<ListenSocket> listen_sock_;
-  scoped_refptr<ListenSocket> connected_sock_;
+  scoped_refptr<TCPListenSocket> listen_sock_;
+  scoped_refptr<TCPListenSocket> connected_sock_;
   bool close_server_socket_on_next_send_;
 };
 
@@ -99,7 +101,7 @@ void TransportClientSocketTest::SetUp() {
   ::testing::TestWithParam<ClientSocketTestTypes>::SetUp();
 
   // Find a free port to listen on
-  ListenSocket *sock = NULL;
+  TCPListenSocket *sock = NULL;
   int port;
   // Range of ports to listen on.  Shouldn't need to try many.
   const int kMinPort = 10100;
@@ -108,7 +110,7 @@ void TransportClientSocketTest::SetUp() {
   EnsureWinsockInit();
 #endif
   for (port = kMinPort; port < kMaxPort; port++) {
-    sock = ListenSocket::Listen("127.0.0.1", port, this);
+    sock = TCPListenSocket::CreateAndListen("127.0.0.1", port, this);
     if (sock)
       break;
   }
diff --git a/net/tools/fetch/http_listen_socket.cc b/net/tools/fetch/http_listen_socket.cc
index fc9f5f3..60c6f94 100644
--- a/net/tools/fetch/http_listen_socket.cc
+++ b/net/tools/fetch/http_listen_socket.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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.
 
@@ -16,7 +16,7 @@
 // must run in the IO thread
 HttpListenSocket::HttpListenSocket(SOCKET s,
                                    HttpListenSocket::Delegate* delegate)
-    : ALLOW_THIS_IN_INITIALIZER_LIST(net::ListenSocket(s, this)),
+    : ALLOW_THIS_IN_INITIALIZER_LIST(net::TCPListenSocket(s, this)),
       delegate_(delegate) {
 }
 
@@ -25,13 +25,13 @@ HttpListenSocket::~HttpListenSocket() {
 }
 
 void HttpListenSocket::Listen() {
-  net::ListenSocket::Listen();
+  net::TCPListenSocket::Listen();
 }
 
 void HttpListenSocket::Accept() {
-  SOCKET conn = net::ListenSocket::Accept(socket_);
-  DCHECK_NE(conn, net::ListenSocket::kInvalidSocket);
-  if (conn == net::ListenSocket::kInvalidSocket) {
+  SOCKET conn = net::TCPListenSocket::Accept(socket_);
+  DCHECK_NE(conn, net::TCPListenSocket::kInvalidSocket);
+  if (conn == net::TCPListenSocket::kInvalidSocket) {
     // TODO
   } else {
     scoped_refptr<HttpListenSocket> sock(
@@ -45,8 +45,8 @@ HttpListenSocket* HttpListenSocket::Listen(
     const std::string& ip,
     int port,
     HttpListenSocket::Delegate* delegate) {
-  SOCKET s = net::ListenSocket::Listen(ip, port);
-  if (s == net::ListenSocket::kInvalidSocket) {
+  SOCKET s = net::TCPListenSocket::CreateAndBind(ip, port);
+  if (s == net::TCPListenSocket::kInvalidSocket) {
     // TODO (ibrar): error handling
   } else {
     HttpListenSocket *serv = new HttpListenSocket(s, delegate);
diff --git a/net/tools/fetch/http_listen_socket.h b/net/tools/fetch/http_listen_socket.h
index 18e3a46..8a09a9e 100644
--- a/net/tools/fetch/http_listen_socket.h
+++ b/net/tools/fetch/http_listen_socket.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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.
 
@@ -7,13 +7,13 @@
 #pragma once
 
 #include "base/message_loop.h"
-#include "net/base/listen_socket.h"
+#include "net/base/tcp_listen_socket.h"
 
 class HttpServerRequestInfo;
 class HttpServerResponseInfo;
 
 // Implements a simple HTTP listen socket on top of the raw socket interface.
-class HttpListenSocket : public net::ListenSocket,
+class HttpListenSocket : public net::TCPListenSocket,
                          public net::ListenSocket::ListenSocketDelegate {
  public:
   class Delegate {