IDL for WebSocket Pepper API.

Define WebSocket Pepper API as IDL and generate the C interface from it.
This IDL takes over from http://codereview.chromium.org/7837022/

BUG=87310
TEST=n/a because only the interface is defined in this change.

Review URL: http://codereview.chromium.org/8395037

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@109592 0039d316-1c4b-4281-b951-d872f2087c98

6 files changed, 760 insertions, 0 deletions

diff --git a/ppapi/api/dev/ppb_websocket_dev.idl b/ppapi/api/dev/ppb_websocket_dev.idl
new file mode 100644
index 0000000..c481910
--- /dev/null
+++ b/ppapi/api/dev/ppb_websocket_dev.idl
@@ -0,0 +1,305 @@
+/* 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.
+ */
+
+/**
+ * This file defines the <code>PPB_WebSocket_Dev</code> interface.
+ */
+label Chrome {
+  M17 = 0.1
+};
+
+
+/**
+ * This enumeration contains the types representing the WebSocket ready state
+ * and these states are based on the JavaScript WebSocket API specification.
+ * GetReadyState() returns one of these states.
+ */
+[assert_size(4)]
+enum PP_WebSocketReadyState_Dev {
+  /**
+   * Ready state that the connection has not yet been established.
+   */
+  PP_WEBSOCKETREADYSTATE_CONNECTING_DEV = 0,
+
+  /**
+   * Ready state that the WebSocket connection is established and communication
+   * is possible.
+   */
+  PP_WEBSOCKETREADYSTATE_OPEN_DEV = 1,
+
+  /**
+   * Ready state that the connection is going through the closing handshake.
+   */
+  PP_WEBSOCKETREADYSTATE_CLOSING_DEV = 2,
+
+  /**
+   * Ready state that the connection has been closed or could not be opened.
+   */
+  PP_WEBSOCKETREADYSTATE_CLOSED_DEV = 3
+};
+
+/**
+ * This enumeration contains the types representing the WebSocket message type
+ * and these types are based on the JavaScript WebSocket API specification.
+ * ReceiveMessage() and SendMessage() use them as a parameter to represent
+ * handling message types.
+ */
+[assert_size(4)]
+enum PP_WebSocketMessageType_Dev {
+  /**
+   * Message type that represents a text message type.
+   */
+  PP_WEBSOCKET_MESSAGE_TYPE_TEXT_DEV = 0,
+
+  /**
+   * Message type that represents a binary message type.
+   */
+  PP_WEBSOCKET_MESSAGE_TYPE_BINARY_DEV = 1
+};
+
+[version=0.1, macro="PPB_WEBSOCKET_DEV_INTERFACE"]
+interface PPB_WebSocket_Dev {
+  /**
+   * Create() creates a WebSocket instance.
+   *
+   * @param[in] instance A <code>PP_Instance</code> identifying the instance
+   * with the WebSocket.
+   *
+   * @return A <code>PP_Resource</code> corresponding to a WebSocket if
+   * successful.
+   */
+  PP_Resource Create([in] PP_Instance instance);
+
+  /**
+   * IsWebSocket() determines if the provided <code>resource</code> is a
+   * WebSocket instance.
+   *
+   * @param[in] resource A <code>PP_Resource</code> corresponding to a
+   * WebSocket.
+   *
+   * @return Returns <code>PP_TRUE</code> if <code>resource</code> is a
+   * <code>PPB_WebSocket_Dev</code>, <code>PP_FALSE</code> if the
+   * <code>resource</code> is invalid or some type other than
+   * <code>PPB_WebSocket_Dev</code>.
+   */
+  PP_Bool IsWebSocket([in] PP_Resource resource);
+
+  /**
+   * Connect() connects to the specified WebSocket server. Caller can call this
+   * method at most once for a <code>web_socket</code>.
+   *
+   * @param[in] web_socket A <code>PP_Resource</code> corresponding to a
+   * WebSocket.
+   *
+   * @param[in] url A <code>PP_Var</code> representing a WebSocket server URL.
+   * The <code>PP_VarType</code> must be <code>PP_VARTYPE_STRING</code>.
+   *
+   * @param[in] protocols A pointer to an array of <code>PP_Var</code>
+   * specifying sub-protocols. Each <code>PP_Var</code> represents one
+   * sub-protocol and its <code>PP_VarType</code> must be
+   * <code>PP_VARTYPE_STRING</code>. This argument can be null only if
+   * <code>protocol_count</code> is 0.
+   *
+   * @param[in] protocol_count The number of sub-protocols in
+   * <code>protocols</code>.
+   *
+   * @param[in] callback A <code>PP_CompletionCallback</code> which is called
+   * when the connection is established or an error occurs in establishing
+   * connection.
+   *
+   * @return In case of immediate failure, returns an error code as follows.
+   * Returns <code>PP_ERROR_BADARGUMENT</code> corresponding to JavaScript
+   * SyntaxError and <code>PP_ERROR_NOACCESS</code> corresponding to JavaScript
+   * SecurityError. Otherwise, returns <code>PP_OK_COMPLETIONPENDING</code>
+   * and invokes <code>callback</code> later.
+   */
+  int32_t Connect([in] PP_Resource web_socket,
+                  [in] PP_Var url,
+                  [in, size_as=protocol_count] PP_Var[] protocols,
+                  [in] uint32_t protocol_count,
+                  [in] PP_CompletionCallback callback);
+
+  /**
+   * Close() closes the specified WebSocket connection by specifying
+   * <code>code</code> and <code>reason</code>.
+   *
+   * @param[in] web_socket A <code>PP_Resource</code> corresponding to a
+   * WebSocket.
+   *
+   * @param[in] code The WebSocket close code. Ignored if it is 0.
+   *
+   * @param[in] reason A <code>PP_Var</code> which represents the WebSocket
+   * close reason. Ignored if it is <code>PP_VARTYPE_UNDEFINED</code>.
+   * Otherwise, its <code>PP_VarType</code> must be
+   * <code>PP_VARTYPE_STRING</code>.
+   *
+   * @param[in] callback A <code>PP_CompletionCallback</code> which is called
+   * when the connection is closed or an error occurs in closing connection.
+   *
+   * @return In case of immediate failure, returns an error code as follows.
+   * Returns <code>PP_ERROR_BADARGUMENT</code> corresponding to JavaScript
+   * SyntaxError and <code>PP_ERROR_NOACCESS</code> corresponding to JavaScript
+   * InvalidAccessError. Otherwise, returns
+   * <code>PP_OK_COMPLETIONPENDING</code> and invokes <code>callback</code>
+   * later.
+   */
+  int32_t Close([in] PP_Resource web_socket,
+                [in] uint16_t code,
+                [in] PP_Var reason,
+                [in] PP_CompletionCallback callback);
+
+  /**
+   * ReceiveMessage() receives a message from the WebSocket server.
+   * This interface only returns bytes of a single message. That is, this
+   * interface must be called at least N times to receive N messages, no matter
+   * how small each message is.
+   *
+   * @param[in] web_socket A <code>PP_Resource</code> corresponding to a
+   * WebSocket.
+   *
+   * @param[out] message The received message is copied to provided
+   * <code>message</code>.
+   *
+   * @param[in] callback A <code>PP_CompletionCallback</code> which is called
+   * when the receiving message is completed. It is ignored when the function
+   * return <code>PP_OK</code>.
+   *
+   * @return In case of immediate failure, returns
+   * <code>PP_ERROR_FAILED</code>. If a message is currently available, returns
+   * <code>PP_OK</code>. Otherwise, returns <PP_OK_COMPLETIONPENDING</code>
+   * and invokes <code>callback</code> later. At that case, if GetReadyState()
+   * returns <code>PP_WEBSOCKETREADYSTATE_OPEN</code>, the received
+   * message is also copied to procided <code>message</code>. Otherwise,
+   * the connection is closed and ReceiveMessage() failed to receive a message.
+   */
+  int32_t ReceiveMessage([in] PP_Resource web_socket,
+                         [out] PP_Var message,
+                         [in] PP_CompletionCallback callback);
+
+  /**
+   * SendMessage() sends a message to the WebSocket server.
+   *
+   * @param[in] web_socket A <code>PP_Resource</code> corresponding to a
+   * WebSocket.
+   *
+   * @param[in] message A message to send. The message is copied to internal
+   * buffer. So caller can free <code>message</code> safely after returning
+   * from the function.
+   *
+   * @return In case of immediate failure, returns an error code as follows.
+   * Returns <code>PP_ERROR_FAILED</code> corresponding to JavaScript
+   * InvalidStateError and <code>PP_ERROR_BADARGUMENT</code> corresponding to
+   * JavaScript SyntaxError. Otherwise, return <code>PP_OK</code>.
+   * <code>PP_OK</code> doesn't necessarily mean that the server received the
+   * message.
+   */
+  int32_t SendMessage([in] PP_Resource web_socket,
+                      [in] PP_Var message);
+
+  /**
+   * GetBufferedAmount() returns the number of bytes of text and binary
+   * messages that have been queued for the WebSocket connection to send but
+   * have not been transmitted to the network yet.
+   *
+   * Note: This interface might not be able to return exact bytes in the first
+   * release. Current WebSocket implementation can not estimate exact protocol
+   * frame overheads.
+   *
+   * @param[in] web_socket A <code>PP_Resource</code> corresponding to a
+   * WebSocket.
+   *
+   * @return Returns the number of bytes.
+   */
+  uint64_t GetBufferedAmount([in] PP_Resource web_socket);
+
+  /**
+   * GetCloseCode() returns the connection close code for the WebSocket
+   * connection.
+   *
+   * @param[in] web_socket A <code>PP_Resource</code> corresponding to a
+   * WebSocket.
+   *
+   * @return Returns 0 if called before the close code is set.
+   */
+  uint16_t GetCloseCode([in] PP_Resource web_socket);
+
+  /**
+   * GetCloseReason() returns the connection close reason for the WebSocket
+   * connection.
+   *
+   * @param[in] web_socket A <code>PP_Resource</code> corresponding to a
+   * WebSocket.
+   *
+   * @return Returns a <code>PP_VARTYPE_NULL</code> var if called before the
+   * close reason is set, or <code>PP_VARTYPE_UNDEFINED</code> if called on an
+   * invalid resource.
+   */
+  PP_Var GetCloseReason([in] PP_Resource web_socket);
+
+  /**
+   * GetCloseWasClean() returns if the connection was closed cleanly for the
+   * specified WebSocket connection.
+   *
+   * @param[in] web_socket A <code>PP_Resource</code> corresponding to a
+   * WebSocket.
+   *
+   * @return Returns <code>PP_FALSE</code> if called before the connection is
+   * closed. Otherwise, returns <code>PP_TRUE</code> if the connection was
+   * closed cleanly and returns <code>PP_FALSE</code> if the connection was
+   * closed by abnormal reasons.
+   */
+  PP_Bool GetCloseWasClean([in] PP_Resource web_socket);
+
+  /**
+   * GetExtensions() returns the extensions selected by the server for the
+   * specified WebSocket connection.
+   *
+   * @param[in] web_socket A <code>PP_Resource</code> corresponding to a
+   * WebSocket.
+   *
+   * @return Returns a <code>PP_VARTYPE_STRING</code> var. If called before the
+   * connection is established or called on an invalid resource, its data is
+   * empty string.
+   * Currently its data is always empty string.
+   */
+  PP_Var GetExtensions([in] PP_Resource web_socket);
+
+  /**
+   * GetProtocol() returns the sub-protocol chosen by the server for the
+   * specified WebSocket connection.
+   *
+   * @param[in] web_socket A <code>PP_Resource</code> corresponding to a
+   * WebSocket.
+   *
+   * @return Returns a <code>PP_VARTYPE_STRING</code> var. If called before the
+   * connection is established, or called on an invalid resource, its data is
+   * empty string.
+   */
+  PP_Var GetProtocol([in] PP_Resource web_socket);
+
+  /**
+   * GetReadyState() returns the ready state of the specified WebSocket
+   * connection.
+   *
+   * @param[in] web_socket A <code>PP_Resource</code> corresponding to a
+   * WebSocket.
+   *
+   * @return Returns <code>PP_WEBSOCKETREADYSTATE_CONNECTING</code> if called
+   * before the connection is established.
+   */
+  PP_WebSocketReadyState_Dev GetReadyState([in] PP_Resource web_socket);
+
+  /**
+   * GetURL() returns the URL associated with specified WebSocket connection.
+   *
+   * @param[in] web_socket A <code>PP_Resource</code> corresponding to a
+   * WebSocket.
+   *
+   * @return Returns a <code>PP_VARTYPE_STRING</code> var. If called before the
+   * connection is established, or called on an invalid resource, its data is
+   * empty string.
+   */
+  PP_Var GetURL([in] PP_Resource web_socket);
+};
diff --git a/ppapi/c/dev/ppb_websocket_dev.h b/ppapi/c/dev/ppb_websocket_dev.h
new file mode 100644
index 0000000..2be0c76
--- /dev/null
+++ b/ppapi/c/dev/ppb_websocket_dev.h
@@ -0,0 +1,317 @@
+/* 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.
+ */
+
+/* From dev/ppb_websocket_dev.idl modified Mon Nov  7 15:21:42 2011. */
+
+#ifndef PPAPI_C_DEV_PPB_WEBSOCKET_DEV_H_
+#define PPAPI_C_DEV_PPB_WEBSOCKET_DEV_H_
+
+#include "ppapi/c/pp_bool.h"
+#include "ppapi/c/pp_completion_callback.h"
+#include "ppapi/c/pp_instance.h"
+#include "ppapi/c/pp_macros.h"
+#include "ppapi/c/pp_resource.h"
+#include "ppapi/c/pp_stdint.h"
+#include "ppapi/c/pp_var.h"
+
+#define PPB_WEBSOCKET_DEV_INTERFACE_0_1 "PPB_WebSocket(Dev);0.1"
+#define PPB_WEBSOCKET_DEV_INTERFACE PPB_WEBSOCKET_DEV_INTERFACE_0_1
+
+/**
+ * @file
+ * This file defines the <code>PPB_WebSocket_Dev</code> interface.
+ */
+
+
+/**
+ * @addtogroup Enums
+ * @{
+ */
+/**
+ * This enumeration contains the types representing the WebSocket ready state
+ * and these states are based on the JavaScript WebSocket API specification.
+ * GetReadyState() returns one of these states.
+ */
+typedef enum {
+  /**
+   * Ready state that the connection has not yet been established.
+   */
+  PP_WEBSOCKETREADYSTATE_CONNECTING_DEV = 0,
+  /**
+   * Ready state that the WebSocket connection is established and communication
+   * is possible.
+   */
+  PP_WEBSOCKETREADYSTATE_OPEN_DEV = 1,
+  /**
+   * Ready state that the connection is going through the closing handshake.
+   */
+  PP_WEBSOCKETREADYSTATE_CLOSING_DEV = 2,
+  /**
+   * Ready state that the connection has been closed or could not be opened.
+   */
+  PP_WEBSOCKETREADYSTATE_CLOSED_DEV = 3
+} PP_WebSocketReadyState_Dev;
+PP_COMPILE_ASSERT_SIZE_IN_BYTES(PP_WebSocketReadyState_Dev, 4);
+
+/**
+ * This enumeration contains the types representing the WebSocket message type
+ * and these types are based on the JavaScript WebSocket API specification.
+ * ReceiveMessage() and SendMessage() use them as a parameter to represent
+ * handling message types.
+ */
+typedef enum {
+  /**
+   * Message type that represents a text message type.
+   */
+  PP_WEBSOCKET_MESSAGE_TYPE_TEXT_DEV = 0,
+  /**
+   * Message type that represents a binary message type.
+   */
+  PP_WEBSOCKET_MESSAGE_TYPE_BINARY_DEV = 1
+} PP_WebSocketMessageType_Dev;
+PP_COMPILE_ASSERT_SIZE_IN_BYTES(PP_WebSocketMessageType_Dev, 4);
+/**
+ * @}
+ */
+
+/**
+ * @addtogroup Interfaces
+ * @{
+ */
+struct PPB_WebSocket_Dev {
+  /**
+   * Create() creates a WebSocket instance.
+   *
+   * @param[in] instance A <code>PP_Instance</code> identifying the instance
+   * with the WebSocket.
+   *
+   * @return A <code>PP_Resource</code> corresponding to a WebSocket if
+   * successful.
+   */
+  PP_Resource (*Create)(PP_Instance instance);
+  /**
+   * IsWebSocket() determines if the provided <code>resource</code> is a
+   * WebSocket instance.
+   *
+   * @param[in] resource A <code>PP_Resource</code> corresponding to a
+   * WebSocket.
+   *
+   * @return Returns <code>PP_TRUE</code> if <code>resource</code> is a
+   * <code>PPB_WebSocket_Dev</code>, <code>PP_FALSE</code> if the
+   * <code>resource</code> is invalid or some type other than
+   * <code>PPB_WebSocket_Dev</code>.
+   */
+  PP_Bool (*IsWebSocket)(PP_Resource resource);
+  /**
+   * Connect() connects to the specified WebSocket server. Caller can call this
+   * method at most once for a <code>web_socket</code>.
+   *
+   * @param[in] web_socket A <code>PP_Resource</code> corresponding to a
+   * WebSocket.
+   *
+   * @param[in] url A <code>PP_Var</code> representing a WebSocket server URL.
+   * The <code>PP_VarType</code> must be <code>PP_VARTYPE_STRING</code>.
+   *
+   * @param[in] protocols A pointer to an array of <code>PP_Var</code>
+   * specifying sub-protocols. Each <code>PP_Var</code> represents one
+   * sub-protocol and its <code>PP_VarType</code> must be
+   * <code>PP_VARTYPE_STRING</code>. This argument can be null only if
+   * <code>protocol_count</code> is 0.
+   *
+   * @param[in] protocol_count The number of sub-protocols in
+   * <code>protocols</code>.
+   *
+   * @param[in] callback A <code>PP_CompletionCallback</code> which is called
+   * when the connection is established or an error occurs in establishing
+   * connection.
+   *
+   * @return In case of immediate failure, returns an error code as follows.
+   * Returns <code>PP_ERROR_BADARGUMENT</code> corresponding to JavaScript
+   * SyntaxError and <code>PP_ERROR_NOACCESS</code> corresponding to JavaScript
+   * SecurityError. Otherwise, returns <code>PP_OK_COMPLETIONPENDING</code>
+   * and invokes <code>callback</code> later.
+   */
+  int32_t (*Connect)(PP_Resource web_socket,
+                     struct PP_Var url,
+                     const struct PP_Var protocols[],
+                     uint32_t protocol_count,
+                     struct PP_CompletionCallback callback);
+  /**
+   * Close() closes the specified WebSocket connection by specifying
+   * <code>code</code> and <code>reason</code>.
+   *
+   * @param[in] web_socket A <code>PP_Resource</code> corresponding to a
+   * WebSocket.
+   *
+   * @param[in] code The WebSocket close code. Ignored if it is 0.
+   *
+   * @param[in] reason A <code>PP_Var</code> which represents the WebSocket
+   * close reason. Ignored if it is <code>PP_VARTYPE_UNDEFINED</code>.
+   * Otherwise, its <code>PP_VarType</code> must be
+   * <code>PP_VARTYPE_STRING</code>.
+   *
+   * @param[in] callback A <code>PP_CompletionCallback</code> which is called
+   * when the connection is closed or an error occurs in closing connection.
+   *
+   * @return In case of immediate failure, returns an error code as follows.
+   * Returns <code>PP_ERROR_BADARGUMENT</code> corresponding to JavaScript
+   * SyntaxError and <code>PP_ERROR_NOACCESS</code> corresponding to JavaScript
+   * InvalidAccessError. Otherwise, returns
+   * <code>PP_OK_COMPLETIONPENDING</code> and invokes <code>callback</code>
+   * later.
+   */
+  int32_t (*Close)(PP_Resource web_socket,
+                   uint16_t code,
+                   struct PP_Var reason,
+                   struct PP_CompletionCallback callback);
+  /**
+   * ReceiveMessage() receives a message from the WebSocket server.
+   * This interface only returns bytes of a single message. That is, this
+   * interface must be called at least N times to receive N messages, no matter
+   * how small each message is.
+   *
+   * @param[in] web_socket A <code>PP_Resource</code> corresponding to a
+   * WebSocket.
+   *
+   * @param[out] message The received message is copied to provided
+   * <code>message</code>.
+   *
+   * @param[in] callback A <code>PP_CompletionCallback</code> which is called
+   * when the receiving message is completed. It is ignored when the function
+   * return <code>PP_OK</code>.
+   *
+   * @return In case of immediate failure, returns
+   * <code>PP_ERROR_FAILED</code>. If a message is currently available, returns
+   * <code>PP_OK</code>. Otherwise, returns <PP_OK_COMPLETIONPENDING</code>
+   * and invokes <code>callback</code> later. At that case, if GetReadyState()
+   * returns <code>PP_WEBSOCKETREADYSTATE_OPEN</code>, the received
+   * message is also copied to procided <code>message</code>. Otherwise,
+   * the connection is closed and ReceiveMessage() failed to receive a message.
+   */
+  int32_t (*ReceiveMessage)(PP_Resource web_socket,
+                            struct PP_Var* message,
+                            struct PP_CompletionCallback callback);
+  /**
+   * SendMessage() sends a message to the WebSocket server.
+   *
+   * @param[in] web_socket A <code>PP_Resource</code> corresponding to a
+   * WebSocket.
+   *
+   * @param[in] message A message to send. The message is copied to internal
+   * buffer. So caller can free <code>message</code> safely after returning
+   * from the function.
+   *
+   * @return In case of immediate failure, returns an error code as follows.
+   * Returns <code>PP_ERROR_FAILED</code> corresponding to JavaScript
+   * InvalidStateError and <code>PP_ERROR_BADARGUMENT</code> corresponding to
+   * JavaScript SyntaxError. Otherwise, return <code>PP_OK</code>.
+   * <code>PP_OK</code> doesn't necessarily mean that the server received the
+   * message.
+   */
+  int32_t (*SendMessage)(PP_Resource web_socket, struct PP_Var message);
+  /**
+   * GetBufferedAmount() returns the number of bytes of text and binary
+   * messages that have been queued for the WebSocket connection to send but
+   * have not been transmitted to the network yet.
+   *
+   * Note: This interface might not be able to return exact bytes in the first
+   * release. Current WebSocket implementation can not estimate exact protocol
+   * frame overheads.
+   *
+   * @param[in] web_socket A <code>PP_Resource</code> corresponding to a
+   * WebSocket.
+   *
+   * @return Returns the number of bytes.
+   */
+  uint64_t (*GetBufferedAmount)(PP_Resource web_socket);
+  /**
+   * GetCloseCode() returns the connection close code for the WebSocket
+   * connection.
+   *
+   * @param[in] web_socket A <code>PP_Resource</code> corresponding to a
+   * WebSocket.
+   *
+   * @return Returns 0 if called before the close code is set.
+   */
+  uint16_t (*GetCloseCode)(PP_Resource web_socket);
+  /**
+   * GetCloseReason() returns the connection close reason for the WebSocket
+   * connection.
+   *
+   * @param[in] web_socket A <code>PP_Resource</code> corresponding to a
+   * WebSocket.
+   *
+   * @return Returns a <code>PP_VARTYPE_NULL</code> var if called before the
+   * close reason is set, or <code>PP_VARTYPE_UNDEFINED</code> if called on an
+   * invalid resource.
+   */
+  struct PP_Var (*GetCloseReason)(PP_Resource web_socket);
+  /**
+   * GetCloseWasClean() returns if the connection was closed cleanly for the
+   * specified WebSocket connection.
+   *
+   * @param[in] web_socket A <code>PP_Resource</code> corresponding to a
+   * WebSocket.
+   *
+   * @return Returns <code>PP_FALSE</code> if called before the connection is
+   * closed. Otherwise, returns <code>PP_TRUE</code> if the connection was
+   * closed cleanly and returns <code>PP_FALSE</code> if the connection was
+   * closed by abnormal reasons.
+   */
+  PP_Bool (*GetCloseWasClean)(PP_Resource web_socket);
+  /**
+   * GetExtensions() returns the extensions selected by the server for the
+   * specified WebSocket connection.
+   *
+   * @param[in] web_socket A <code>PP_Resource</code> corresponding to a
+   * WebSocket.
+   *
+   * @return Returns a <code>PP_VARTYPE_STRING</code> var. If called before the
+   * connection is established or called on an invalid resource, its data is
+   * empty string.
+   * Currently its data is always empty string.
+   */
+  struct PP_Var (*GetExtensions)(PP_Resource web_socket);
+  /**
+   * GetProtocol() returns the sub-protocol chosen by the server for the
+   * specified WebSocket connection.
+   *
+   * @param[in] web_socket A <code>PP_Resource</code> corresponding to a
+   * WebSocket.
+   *
+   * @return Returns a <code>PP_VARTYPE_STRING</code> var. If called before the
+   * connection is established, or called on an invalid resource, its data is
+   * empty string.
+   */
+  struct PP_Var (*GetProtocol)(PP_Resource web_socket);
+  /**
+   * GetReadyState() returns the ready state of the specified WebSocket
+   * connection.
+   *
+   * @param[in] web_socket A <code>PP_Resource</code> corresponding to a
+   * WebSocket.
+   *
+   * @return Returns <code>PP_WEBSOCKETREADYSTATE_CONNECTING</code> if called
+   * before the connection is established.
+   */
+  PP_WebSocketReadyState_Dev (*GetReadyState)(PP_Resource web_socket);
+  /**
+   * GetURL() returns the URL associated with specified WebSocket connection.
+   *
+   * @param[in] web_socket A <code>PP_Resource</code> corresponding to a
+   * WebSocket.
+   *
+   * @return Returns a <code>PP_VARTYPE_STRING</code> var. If called before the
+   * connection is established, or called on an invalid resource, its data is
+   * empty string.
+   */
+  struct PP_Var (*GetURL)(PP_Resource web_socket);
+};
+/**
+ * @}
+ */
+
+#endif  /* PPAPI_C_DEV_PPB_WEBSOCKET_DEV_H_ */
+
diff --git a/ppapi/cpp/dev/websocket_dev.h b/ppapi/cpp/dev/websocket_dev.h
new file mode 100644
index 0000000..f7bca16
--- /dev/null
+++ b/ppapi/cpp/dev/websocket_dev.h
@@ -0,0 +1,135 @@
+// 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 PPAPI_CPP_DEV_WEBSOCKET_DEV_H_
+#define PPAPI_CPP_DEV_WEBSOCKET_DEV_H_
+
+#include "ppapi/c/dev/ppb_websocket_dev.h"
+
+/// @file
+/// This file defines the WebSocket_Dev interface.
+
+namespace pp {
+
+class Var;
+
+/// The <code>WebSocket_Dev</code> class
+/// A version that use virtual functions
+class WebSocket_Dev : public Resource {
+ public:
+  /// Constructs a WebSocket_Dev object.
+  WebSocket_Dev();
+
+  /// Destructs a WebSocket_Dev object.
+  virtual ~WebSocket_Dev();
+
+  /// Connect() connects to the specified WebSocket server. Caller can call
+  /// this method at most once.
+  ///
+  /// @param[in] url A <code>PP_Var</code> representing a WebSocket server URL.
+  /// The <code>PP_VarType</code> must be <code>PP_VARTYPE_STRING</code>.
+  /// @param[in] protocols A pointer to an array of <code>PP_Var</code>
+  /// specifying sub-protocols. Each <code>PP_Var</code> represents one
+  /// sub-protocol and its <code>PP_VarType</code> must be
+  /// <code>PP_VARTYPE_STRING</code>. This argument can be null only if
+  /// <code>protocol_count</code> is 0.
+  /// @param[in] protocol_count The number of sub-protocols in
+  /// <code>protocols</code>.
+  ///
+  /// @return In case of immediate failure, returns an error code as follows.
+  /// Returns <code>PP_ERROR_BADARGUMENT</code> corresponding to JavaScript
+  /// SyntaxError and <code>PP_ERROR_NOACCESS</code> corresponding to
+  /// JavaScript SecurityError. Otherwise, returns
+  /// <code>PP_OK_COMPLETIONPENDING</code> and later invokes
+  /// <code>OnOpen()</code> on success or <code>OnClose()</code> on failure.
+  int32_t Connect(const Var& url, const Var protocols[],
+                  uint32_t protocol_count);
+
+  /// Close() closes the specified WebSocket connection by specifying
+  /// <code>code</code> and <code>reason</code>.
+  ///
+  /// @param[in] code The WebSocket close code. Ignored if it is 0.
+  /// @param[in] reason A <code>PP_Var</code> which represents the WebSocket
+  /// close reason. Ignored if it is <code>PP_VARTYPE_UNDEFINED</code>.
+  /// Otherwise, its <code>PP_VarType</code> must be
+  /// <code>PP_VARTYPE_STRING</code>.
+  ///
+  /// @return In case of immediate failure, returns an error code as follows.
+  /// Returns <code>PP_ERROR_BADARGUMENT</code> corresponding to JavaScript
+  /// SyntaxError and <code>PP_ERROR_NOACCESS</code> corresponding to
+  /// JavaScript InvalidAccessError. Otherwise, returns
+  /// <code>PP_OK_COMPLETIONPENDING</code> and invokes <code>OnClose</code>.
+  int32_t Close(uint16_t code, const Var& reason);
+
+  /// Send() sends a message to the WebSocket server.
+  ///
+  /// @param[in] data A message to send. The message is copied to internal
+  /// buffer. So caller can free <code>data</code> safely after returning
+  /// from the function.
+  ///
+  /// @return In case of immediate failure, returns an error code as follows.
+  /// Returns <code>PP_ERROR_FAILED</code> corresponding to JavaScript
+  /// InvalidStateError and <code>PP_ERROR_BADARGUMENT</code> corresponding to
+  /// JavaScript SyntaxError. Otherwise, return <code>PP_OK</code>.
+  /// <code>PP_OK</code> doesn't necessarily mean that the server received the
+  /// message.
+  int32_t Send(const Var& data);
+
+  /// GetBufferedAmount() returns the number of bytes of text and binary
+  /// messages that have been queued for the WebSocket connection to send but
+  /// have not been transmitted to the network yet.
+  ///
+  /// Note: This interface might not be able to return exact bytes in the first
+  /// release. Current WebSocket implementation can not estimate exact protocol
+  /// frame overheads.
+  ///
+  /// @return Returns the number of bytes.
+  uint64_t GetBufferedAmount();
+
+  /// GetExtensions() returns the extensions selected by the server for the
+  /// specified WebSocket connection.
+  ///
+  /// @return Returns a <code>PP_VARTYPE_STRING</code> var. If called before
+  /// the connection is established, its data is empty string.
+  /// Currently its data is always empty string.
+  Var GetExtensions();
+
+  /// GetProtocol() returns the sub-protocol chosen by the server for the
+  /// specified WebSocket connection.
+  ///
+  /// @return Returns a <code>PP_VARTYPE_STRING</code> var. If called before
+  /// the connection is established, its data is empty string.
+  Var GetProtocol();
+
+  /// GetReadyState() returns the ready state of the specified WebSocket
+  /// connection.
+  ///
+  /// @return Returns <code>PP_WEBSOCKETREADYSTATE_CONNECTING</code> if called
+  /// before the connection is established.
+  PP_WebSocketReadyState_Dev GetReadyState();
+
+  /// GetURL() returns the URL associated with specified WebSocket connection.
+  ///
+  /// @return Returns a <code>PP_VARTYPE_STRING</code> var. If called before
+  /// the connection is established, its data is empty string.
+  Var GetURL();
+
+  /// OnOpen() is invoked when the connection is established by Connect().
+  virtual void OnOpen() = 0;
+
+  /// OnMessage() is invoked when a message is received.
+  virtual void OnMessage(Var message) = 0;
+
+  /// OnError() is invoked if the user agent was required to fail the WebSocket
+  /// connection or the WebSocket connection is closed with prejudice.
+  /// OnClose() always follows OnError().
+  virtual void OnError() = 0;
+
+  /// OnClose() is invoked when the connection is closed by errors or Close().
+  virtual void OnClose(bool wasClean, uint16_t code, const Var& reason) = 0;
+};
+
+}  // namespace pp
+
+#endif  // PPAPI_CPP_DEV_WEBSOCKET_DEV_H_
diff --git a/ppapi/ppapi_cpp.gypi b/ppapi/ppapi_cpp.gypi
index 7d18b3d..9771de3 100644
--- a/ppapi/ppapi_cpp.gypi
+++ b/ppapi/ppapi_cpp.gypi
@@ -77,6 +77,7 @@
         'c/dev/ppb_testing_dev.h',
         'c/dev/ppb_url_util_dev.h',
         'c/dev/ppb_video_decoder_dev.h',
+        'c/dev/ppb_websocket_dev.h',
         'c/dev/ppb_widget_dev.h',
         'c/dev/ppb_zoom_dev.h',
         'c/dev/ppp_cursor_control_dev.h',
diff --git a/ppapi/tests/all_c_includes.h b/ppapi/tests/all_c_includes.h
index 776d87a..3c41d7d 100644
--- a/ppapi/tests/all_c_includes.h
+++ b/ppapi/tests/all_c_includes.h
@@ -35,6 +35,7 @@
 #include "ppapi/c/dev/ppb_var_deprecated.h"
 #include "ppapi/c/dev/ppb_video_decoder_dev.h"
 #include "ppapi/c/dev/ppb_video_layer_dev.h"
+#include "ppapi/c/dev/ppb_websocket_dev.h"
 #include "ppapi/c/dev/ppb_widget_dev.h"
 #include "ppapi/c/dev/ppb_zoom_dev.h"
 #include "ppapi/c/dev/ppp_class_deprecated.h"
diff --git a/ppapi/tests/all_cpp_includes.h b/ppapi/tests/all_cpp_includes.h
index 50df529..4ea5e0a 100644
--- a/ppapi/tests/all_cpp_includes.h
+++ b/ppapi/tests/all_cpp_includes.h
@@ -31,6 +31,7 @@
 #include "ppapi/cpp/dev/transport_dev.h"
 #include "ppapi/cpp/dev/url_util_dev.h"
 #include "ppapi/cpp/dev/video_decoder_dev.h"
+#include "ppapi/cpp/dev/websocket_dev.h"
 #include "ppapi/cpp/dev/widget_client_dev.h"
 #include "ppapi/cpp/dev/widget_dev.h"
 #include "ppapi/cpp/dev/zoom_dev.h"