Exposed Listen and Accept methods to plugin.

ppapi/api/private/ppb_tcp_server_socket_private.idl

+/* 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.
+ */
+
+/**
+ * This file defines the <code>PPB_TCPServerSocket_Private</code> interface.
+ */
+
+label Chrome {
+  M18 = 0.1
+};
+
+/**
+ * The <code>PPB_TCPServerSocket_Private</code> interface provides TCP
+ * server socket operations.
+ */
+interface PPB_TCPServerSocket_Private {
+  /**
+   * Allocates a TCP server socket resource. Also, starts lazy

[yzshen1, 2012/02/10 22:40:15]

I think you could remove the 2nd and 3rd sentence. It seems to be an
implementation detail that the user don't need to care.

[ygorshenin1, 2012/02/13 14:59:46]

Done.

+   * initialization of created socket.  Initialization will complete
+   * only after Listen call.
+   */
+  PP_Resource Create([in] PP_Instance instance);
+
+  /**
+   * Determines if a given resource is TCP server socket.
+   */
+  PP_Bool IsTCPServerSocket([in] PP_Resource resource);
+
+  /**
+   * Binds |tcp_server_socket| to the address given by |addr| and
+   * starts listening.  The |backlog| argument defines the maximum
+   * length to which the queue of pending connections may
+   * grow. |callback| is invoked when |tcp_server_socket| is ready to
+   * accept incoming connections or in the case of failure.

[brettw, 2012/02/10 21:43:32]

Can you add the description of the failures modes that you sent me in the
comments? That was very useful. We should describe what each possible return
value means.

[ygorshenin1, 2012/02/13 14:59:46]

Done.

+   */
+  int32_t Listen([in] PP_Resource tcp_server_socket,
+                 [in] PP_NetAddress_Private addr,
+                 [in] int32_t backlog,
+                 [in] PP_CompletionCallback callback);
+
+  /**
+   * Accepts single connection, creates instance of
+   * PPB_TCPSocket_Private and stores reference to it in
+   * |tcp_socket|. |callback| is invoked when connection is accepted
+   * or in the case of failure. This method can be called only after
+   * succesfull Listen call on |tcp_server_socket|.
+   */
+  int32_t Accept([in] PP_Resource tcp_server_socket,
+                 [out] PP_Resource tcp_socket,
+                 [in] PP_CompletionCallback callback);
+
+  /**
+   * Cancels all pending callbacks reporting PP_ERROR_ABORTED and
+   * closes the socket. Note: this method is implicitly called when
+   * server socket is destroyed.
+   */
+  void StopListening([in] PP_Resource tcp_server_socket);
+};