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// 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 NET_SOCKET_WEB_SOCKET_SERVER_SOCKET_H_
#define NET_SOCKET_WEB_SOCKET_SERVER_SOCKET_H_
#include <string>
#include <vector>
#include "net/base/net_export.h"
#include "net/socket/socket.h"
namespace net {
// WebSocketServerSocket takes an (already connected) underlying transport
// socket and speaks server-side websocket protocol atop of it.
// This class implements Socket interface: notice that Read() returns (or calls
// back) as soon as some amount of data is available, even if message/frame is
// incomplete.
class WebSocketServerSocket : public Socket {
public:
class Delegate {
public:
// Validates websocket handshake: return false to reject handshake.
// |resource| is name of resource requested in GET stanza of handshake;
// |origin| is origin as reported in handshake;
// |host| is Host field from handshake;
// |subprotocol_list| is derived from Sec-WebSocket-Protocol field.
// Output parameters are:
// |location_out| is location of websocket server;
// |subprotocol_out| is selected subprotocol (or empty string if subprotocol
// list is empty.
virtual bool ValidateWebSocket(
const std::string& resource,
const std::string& origin,
const std::string& host,
const std::vector<std::string>& subprotocol_list,
std::string* location_out,
std::string* subprotocol_out) = 0;
virtual ~Delegate() {}
};
virtual ~WebSocketServerSocket();
// Performs websocket server handshake on transport socket. Underlying socket
// must have already been connected/accepted.
//
// Returns either ERR_IO_PENDING, in which case the given callback will be
// called in the future with the real result, or it completes synchronously,
// returning the result immediately.
virtual int Accept(OldCompletionCallback* callback) = 0;
};
// Creates websocket server socket atop of already connected socket. This
// created server socket will take ownership of |transport_socket|.
NET_EXPORT WebSocketServerSocket* CreateWebSocketServerSocket(
Socket* transport_socket,
WebSocketServerSocket::Delegate* delegate);
} // namespace net
#endif // NET_SOCKET_WEB_SOCKET_SERVER_SOCKET_H_
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