317 lines
14 KiB
C++
317 lines
14 KiB
C++
// Copyright (c) 2017 Marshall A. Greenblatt. All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the name Chromium Embedded
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// Framework nor the names of its contributors may be used to endorse
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// or promote products derived from this software without specific prior
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// written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// ---------------------------------------------------------------------------
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//
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// The contents of this file must follow a specific format in order to
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// support the CEF translator tool. See the translator.README.txt file in the
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// tools directory for more information.
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//
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#ifndef CEF_INCLUDE_CEF_SERVER_H_
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#define CEF_INCLUDE_CEF_SERVER_H_
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#pragma once
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#include <map>
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#include "include/cef_base.h"
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#include "include/cef_callback.h"
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#include "include/cef_request.h"
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#include "include/cef_task.h"
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class CefServerHandler;
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///
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/// Class representing a server that supports HTTP and WebSocket requests.
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/// Server capacity is limited and is intended to handle only a small number of
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/// simultaneous connections (e.g. for communicating between applications on
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/// localhost). The methods of this class are safe to call from any thread in
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/// the brower process unless otherwise indicated.
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///
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/*--cef(source=library)--*/
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class CefServer : public CefBaseRefCounted {
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public:
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typedef std::multimap<CefString, CefString> HeaderMap;
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///
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/// Create a new server that binds to |address| and |port|. |address| must be
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/// a valid IPv4 or IPv6 address (e.g. 127.0.0.1 or ::1) and |port| must be a
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/// port number outside of the reserved range (e.g. between 1025 and 65535 on
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/// most platforms). |backlog| is the maximum number of pending connections.
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/// A new thread will be created for each CreateServer call (the "dedicated
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/// server thread"). It is therefore recommended to use a different
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/// CefServerHandler instance for each CreateServer call to avoid thread
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/// safety issues in the CefServerHandler implementation. The
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/// CefServerHandler::OnServerCreated method will be called on the dedicated
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/// server thread to report success or failure. See
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/// CefServerHandler::OnServerCreated documentation for a description of
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/// server lifespan.
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///
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/*--cef()--*/
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static void CreateServer(const CefString& address,
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uint16 port,
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int backlog,
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CefRefPtr<CefServerHandler> handler);
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///
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/// Returns the task runner for the dedicated server thread.
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///
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/*--cef()--*/
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virtual CefRefPtr<CefTaskRunner> GetTaskRunner() = 0;
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///
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/// Stop the server and shut down the dedicated server thread. See
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/// CefServerHandler::OnServerCreated documentation for a description of
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/// server lifespan.
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///
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/*--cef()--*/
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virtual void Shutdown() = 0;
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///
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/// Returns true if the server is currently running and accepting incoming
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/// connections. See CefServerHandler::OnServerCreated documentation for a
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/// description of server lifespan. This method must be called on the
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/// dedicated server thread.
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///
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/*--cef()--*/
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virtual bool IsRunning() = 0;
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///
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/// Returns the server address including the port number.
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///
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/*--cef()--*/
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virtual CefString GetAddress() = 0;
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///
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/// Returns true if the server currently has a connection. This method must be
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/// called on the dedicated server thread.
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///
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/*--cef()--*/
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virtual bool HasConnection() = 0;
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///
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/// Returns true if |connection_id| represents a valid connection. This method
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/// must be called on the dedicated server thread.
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///
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/*--cef()--*/
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virtual bool IsValidConnection(int connection_id) = 0;
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///
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/// Send an HTTP 200 "OK" response to the connection identified by
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/// |connection_id|. |content_type| is the response content type (e.g.
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/// "text/html"), |data| is the response content, and |data_size| is the size
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/// of |data| in bytes. The contents of |data| will be copied. The connection
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/// will be closed automatically after the response is sent.
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///
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/*--cef()--*/
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virtual void SendHttp200Response(int connection_id,
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const CefString& content_type,
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const void* data,
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size_t data_size) = 0;
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///
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/// Send an HTTP 404 "Not Found" response to the connection identified by
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/// |connection_id|. The connection will be closed automatically after the
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/// response is sent.
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///
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/*--cef()--*/
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virtual void SendHttp404Response(int connection_id) = 0;
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///
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/// Send an HTTP 500 "Internal Server Error" response to the connection
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/// identified by |connection_id|. |error_message| is the associated error
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/// message. The connection will be closed automatically after the response is
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/// sent.
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///
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/*--cef()--*/
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virtual void SendHttp500Response(int connection_id,
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const CefString& error_message) = 0;
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///
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/// Send a custom HTTP response to the connection identified by
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/// |connection_id|. |response_code| is the HTTP response code sent in the
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/// status line (e.g. 200), |content_type| is the response content type sent
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/// as the "Content-Type" header (e.g. "text/html"), |content_length| is the
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/// expected content length, and |extra_headers| is the map of extra response
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/// headers. If |content_length| is >= 0 then the "Content-Length" header will
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/// be sent. If |content_length| is 0 then no content is expected and the
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/// connection will be closed automatically after the response is sent. If
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/// |content_length| is < 0 then no "Content-Length" header will be sent and
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/// the client will continue reading until the connection is closed. Use the
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/// SendRawData method to send the content, if applicable, and call
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/// CloseConnection after all content has been sent.
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///
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/*--cef(optional_param=extra_headers)--*/
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virtual void SendHttpResponse(int connection_id,
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int response_code,
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const CefString& content_type,
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int64 content_length,
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const HeaderMap& extra_headers) = 0;
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///
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/// Send raw data directly to the connection identified by |connection_id|.
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/// |data| is the raw data and |data_size| is the size of |data| in bytes.
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/// The contents of |data| will be copied. No validation of |data| is
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/// performed internally so the client should be careful to send the amount
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/// indicated by the "Content-Length" header, if specified. See
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/// SendHttpResponse documentation for intended usage.
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///
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/*--cef()--*/
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virtual void SendRawData(int connection_id,
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const void* data,
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size_t data_size) = 0;
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///
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/// Close the connection identified by |connection_id|. See SendHttpResponse
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/// documentation for intended usage.
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///
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/*--cef()--*/
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virtual void CloseConnection(int connection_id) = 0;
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///
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/// Send a WebSocket message to the connection identified by |connection_id|.
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/// |data| is the response content and |data_size| is the size of |data| in
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/// bytes. The contents of |data| will be copied. See
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/// CefServerHandler::OnWebSocketRequest documentation for intended usage.
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///
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/*--cef()--*/
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virtual void SendWebSocketMessage(int connection_id,
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const void* data,
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size_t data_size) = 0;
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};
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///
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/// Implement this interface to handle HTTP server requests. A new thread will
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/// be created for each CefServer::CreateServer call (the "dedicated server
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/// thread"), and the methods of this class will be called on that thread. It is
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/// therefore recommended to use a different CefServerHandler instance for each
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/// CefServer::CreateServer call to avoid thread safety issues in the
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/// CefServerHandler implementation.
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///
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/*--cef(source=client)--*/
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class CefServerHandler : public virtual CefBaseRefCounted {
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public:
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///
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/// Called when |server| is created. If the server was started successfully
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/// then CefServer::IsRunning will return true. The server will continue
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/// running until CefServer::Shutdown is called, after which time
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/// OnServerDestroyed will be called. If the server failed to start then
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/// OnServerDestroyed will be called immediately after this method returns.
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///
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/*--cef()--*/
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virtual void OnServerCreated(CefRefPtr<CefServer> server) = 0;
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///
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/// Called when |server| is destroyed. The server thread will be stopped after
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/// this method returns. The client should release any references to |server|
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/// when this method is called. See OnServerCreated documentation for a
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/// description of server lifespan.
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///
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/*--cef()--*/
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virtual void OnServerDestroyed(CefRefPtr<CefServer> server) = 0;
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///
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/// Called when a client connects to |server|. |connection_id| uniquely
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/// identifies the connection. Each call to this method will have a matching
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/// call to OnClientDisconnected.
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///
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/*--cef()--*/
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virtual void OnClientConnected(CefRefPtr<CefServer> server,
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int connection_id) = 0;
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///
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/// Called when a client disconnects from |server|. |connection_id| uniquely
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/// identifies the connection. The client should release any data associated
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/// with |connection_id| when this method is called and |connection_id| should
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/// no longer be passed to CefServer methods. Disconnects can originate from
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/// either the client or the server. For example, the server will disconnect
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/// automatically after a CefServer::SendHttpXXXResponse method is called.
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///
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/*--cef()--*/
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virtual void OnClientDisconnected(CefRefPtr<CefServer> server,
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int connection_id) = 0;
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///
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/// Called when |server| receives an HTTP request. |connection_id| uniquely
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/// identifies the connection, |client_address| is the requesting IPv4 or IPv6
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/// client address including port number, and |request| contains the request
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/// contents (URL, method, headers and optional POST data). Call CefServer
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/// methods either synchronously or asynchronusly to send a response.
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///
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/*--cef()--*/
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virtual void OnHttpRequest(CefRefPtr<CefServer> server,
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int connection_id,
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const CefString& client_address,
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CefRefPtr<CefRequest> request) = 0;
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///
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/// Called when |server| receives a WebSocket request. |connection_id|
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/// uniquely identifies the connection, |client_address| is the requesting
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/// IPv4 or IPv6 client address including port number, and |request| contains
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/// the request contents (URL, method, headers and optional POST data).
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/// Execute |callback| either synchronously or asynchronously to accept or
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/// decline the WebSocket connection. If the request is accepted then
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/// OnWebSocketConnected will be called after the WebSocket has connected and
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/// incoming messages will be delivered to the OnWebSocketMessage callback. If
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/// the request is declined then the client will be disconnected and
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/// OnClientDisconnected will be called. Call the
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/// CefServer::SendWebSocketMessage method after receiving the
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/// OnWebSocketConnected callback to respond with WebSocket messages.
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///
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/*--cef()--*/
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virtual void OnWebSocketRequest(CefRefPtr<CefServer> server,
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int connection_id,
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const CefString& client_address,
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CefRefPtr<CefRequest> request,
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CefRefPtr<CefCallback> callback) = 0;
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///
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/// Called after the client has accepted the WebSocket connection for |server|
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/// and |connection_id| via the OnWebSocketRequest callback. See
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/// OnWebSocketRequest documentation for intended usage.
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///
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/*--cef()--*/
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virtual void OnWebSocketConnected(CefRefPtr<CefServer> server,
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int connection_id) = 0;
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///
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/// Called when |server| receives an WebSocket message. |connection_id|
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/// uniquely identifies the connection, |data| is the message content and
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/// |data_size| is the size of |data| in bytes. Do not keep a reference to
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/// |data| outside of this method. See OnWebSocketRequest documentation for
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/// intended usage.
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///
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/*--cef()--*/
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virtual void OnWebSocketMessage(CefRefPtr<CefServer> server,
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int connection_id,
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const void* data,
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size_t data_size) = 0;
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};
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#endif // CEF_INCLUDE_CEF_SERVER_H_
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