| // Copyright 2013 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. |
| |
| // Multiply-included message file, hence no include guard. |
| |
| // This file defines the IPCs for the browser-side implementation of |
| // WebSockets. For the legacy renderer-side implementation, see |
| // socket_stream_messages.h. |
| // TODO(ricea): Fix this comment when the legacy implementation has been |
| // removed. |
| // |
| // This IPC interface is based on the WebSocket multiplexing draft spec, |
| // http://tools.ietf.org/html/draft-ietf-hybi-websocket-multiplexing-09 |
| |
| #include <string> |
| #include <vector> |
| |
| #include "base/basictypes.h" |
| #include "content/common/content_export.h" |
| #include "content/common/websocket.h" |
| #include "ipc/ipc_message_macros.h" |
| #include "url/gurl.h" |
| |
| #undef IPC_MESSAGE_EXPORT |
| #define IPC_MESSAGE_EXPORT CONTENT_EXPORT |
| #define IPC_MESSAGE_START WebSocketMsgStart |
| |
| // WebSocket messages sent from the renderer to the browser. |
| |
| // Open new virtual WebSocket connection to |socket_url|. |channel_id| is an |
| // identifier chosen by the renderer for the new channel. It cannot correspond |
| // to an existing open channel, and must be between 1 and |
| // 0x7FFFFFFF. |requested_protocols| is a list of tokens identifying |
| // sub-protocols the renderer would like to use, as described in RFC6455 |
| // "Subprotocols Using the WebSocket Protocol". |
| // |
| // The browser process will not send |channel_id| as-is to the remote server; it |
| // will try to use a short id on the wire. This saves the renderer from |
| // having to try to choose the ids cleverly. |
| IPC_MESSAGE_CONTROL4(WebSocketHostMsg_AddChannelRequest, |
| int /* channel_id */, |
| GURL /* socket_url */, |
| std::vector<std::string> /* requested_protocols */, |
| GURL /* origin */) |
| |
| // Web Socket messages sent from the browser to the renderer. |
| |
| // Respond to an AddChannelRequest for channel |channel_id|. |channel_id| is |
| // scoped to the renderer process; while it is unique per-renderer, the browser |
| // may have multiple renderers using the same id. If |fail| is true, the channel |
| // could not be established (the cause of the failure is not provided to the |
| // renderer in order to limit its ability to abuse WebSockets to perform network |
| // probing, etc.). If |fail| is set then the |channel_id| is available for |
| // re-use. |selected_protocol| is the sub-protocol the server selected, |
| // or empty if no sub-protocol was selected. |extensions| is the list of |
| // extensions negotiated for the connection. |
| IPC_MESSAGE_CONTROL4(WebSocketMsg_AddChannelResponse, |
| int /* channel_id */, |
| bool /* fail */, |
| std::string /* selected_protocol */, |
| std::string /* extensions */) |
| |
| // WebSocket messages that can be sent in either direction. |
| |
| IPC_ENUM_TRAITS(content::WebSocketMessageType) |
| |
| // Send a non-control frame on |channel_id|. If the sender is the renderer, it |
| // will be sent to the remote server. If the sender is the browser, it comes |
| // from the remote server. |fin| indicates that this frame is the last in the |
| // current message. |type| is the type of the message. On the first frame of a |
| // message, it must be set to either WEB_SOCKET_MESSAGE_TYPE_TEXT or |
| // WEB_SOCKET_MESSAGE_TYPE_BINARY. On subsequent frames, it must be set to |
| // WEB_SOCKET_MESSAGE_TYPE_CONTINUATION, and the type is the same as that of the |
| // first message. If |type| is WEB_SOCKET_MESSAGE_TYPE_TEXT, then the |
| // concatenation of the |data| from every frame in the message must be valid |
| // UTF-8. If |fin| is not set, |data| must be non-empty. |
| IPC_MESSAGE_CONTROL4(WebSocketMsg_SendFrame, |
| int /* channel_id */, |
| bool /* fin */, |
| content::WebSocketMessageType /* type */, |
| std::vector<char> /* data */) |
| |
| // Add |quota| tokens of send quota for channel |channel_id|. |quota| must be a |
| // positive integer. Both the browser and the renderer set send quota for the |
| // other side, and check that quota has not been exceeded when receiving |
| // messages. Both sides start a new channel with a quota of 0, and must wait for |
| // a FlowControl message before calling SendFrame. The total available quota on |
| // one side must never exceed 0x7FFFFFFFFFFFFFFF tokens. |
| IPC_MESSAGE_CONTROL2(WebSocketMsg_FlowControl, |
| int /* channel_id */, |
| int64 /* quota */) |
| |
| // Drop the channel. |
| // When sent by the renderer, this will cause a DropChannel message to be sent |
| // if the multiplex extension is in use, otherwise a Close message will be sent |
| // and the TCP/IP connection will be closed. |
| // When sent by the browser, this indicates that a Close or DropChannel has been |
| // received, the connection was closed, or a network or protocol error |
| // occurred. On receiving DropChannel, the renderer process may consider the |
| // |channel_id| available for reuse by a new AddChannelRequest. |
| // |code| is one of the reason codes specified in RFC6455 or |
| // draft-ietf-hybi-websocket-multiplexing-09. |reason|, if non-empty, is a |
| // UTF-8 encoded string which may be useful for debugging but is not necessarily |
| // human-readable, as supplied by the server in the Close or DropChannel |
| // message. |
| IPC_MESSAGE_CONTROL3(WebSocketMsg_DropChannel, |
| int /* channel_id */, |
| unsigned short /* code */, |
| std::string /* reason */) |