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cef/include/capi/cef_server_capi.h

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// Copyright (c) 2023 Marshall A. Greenblatt. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the name Chromium Embedded
// Framework nor the names of its contributors may be used to endorse
// or promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// ---------------------------------------------------------------------------
//
// This file was generated by the CEF translator tool and should not edited
// by hand. See the translator.README.txt file in the tools directory for
// more information.
//
// $hash=d0563a0850f6118c850ab01c553142d2e890703e$
//
#ifndef CEF_INCLUDE_CAPI_CEF_SERVER_CAPI_H_
#define CEF_INCLUDE_CAPI_CEF_SERVER_CAPI_H_
#pragma once
#include "include/capi/cef_base_capi.h"
#include "include/capi/cef_callback_capi.h"
#include "include/capi/cef_request_capi.h"
#include "include/capi/cef_task_capi.h"
#ifdef __cplusplus
extern "C" {
#endif
struct _cef_server_handler_t;
///
/// Structure representing a server that supports HTTP and WebSocket requests.
/// Server capacity is limited and is intended to handle only a small number of
/// simultaneous connections (e.g. for communicating between applications on
/// localhost). The functions of this structure are safe to call from any thread
/// in the brower process unless otherwise indicated.
///
typedef struct _cef_server_t {
///
/// Base structure.
///
cef_base_ref_counted_t base;
///
/// Returns the task runner for the dedicated server thread.
///
struct _cef_task_runner_t*(CEF_CALLBACK* get_task_runner)(
struct _cef_server_t* self);
///
/// Stop the server and shut down the dedicated server thread. See
/// cef_server_handler_t::OnServerCreated documentation for a description of
/// server lifespan.
///
void(CEF_CALLBACK* shutdown)(struct _cef_server_t* self);
///
/// Returns true (1) if the server is currently running and accepting incoming
/// connections. See cef_server_handler_t::OnServerCreated documentation for a
/// description of server lifespan. This function must be called on the
/// dedicated server thread.
///
int(CEF_CALLBACK* is_running)(struct _cef_server_t* self);
///
/// Returns the server address including the port number.
///
// The resulting string must be freed by calling cef_string_userfree_free().
cef_string_userfree_t(CEF_CALLBACK* get_address)(struct _cef_server_t* self);
///
/// Returns true (1) if the server currently has a connection. This function
/// must be called on the dedicated server thread.
///
int(CEF_CALLBACK* has_connection)(struct _cef_server_t* self);
///
/// Returns true (1) if |connection_id| represents a valid connection. This
/// function must be called on the dedicated server thread.
///
int(CEF_CALLBACK* is_valid_connection)(struct _cef_server_t* self,
int connection_id);
///
/// Send an HTTP 200 "OK" response to the connection identified by
/// |connection_id|. |content_type| is the response content type (e.g.
/// "text/html"), |data| is the response content, and |data_size| is the size
/// of |data| in bytes. The contents of |data| will be copied. The connection
/// will be closed automatically after the response is sent.
///
void(CEF_CALLBACK* send_http200response)(struct _cef_server_t* self,
int connection_id,
const cef_string_t* content_type,
const void* data,
size_t data_size);
///
/// Send an HTTP 404 "Not Found" response to the connection identified by
/// |connection_id|. The connection will be closed automatically after the
/// response is sent.
///
void(CEF_CALLBACK* send_http404response)(struct _cef_server_t* self,
int connection_id);
///
/// Send an HTTP 500 "Internal Server Error" response to the connection
/// identified by |connection_id|. |error_message| is the associated error
/// message. The connection will be closed automatically after the response is
/// sent.
///
void(CEF_CALLBACK* send_http500response)(struct _cef_server_t* self,
int connection_id,
const cef_string_t* error_message);
///
/// Send a custom HTTP response to the connection identified by
/// |connection_id|. |response_code| is the HTTP response code sent in the
/// status line (e.g. 200), |content_type| is the response content type sent
/// as the "Content-Type" header (e.g. "text/html"), |content_length| is the
/// expected content length, and |extra_headers| is the map of extra response
/// headers. If |content_length| is >= 0 then the "Content-Length" header will
/// be sent. If |content_length| is 0 then no content is expected and the
/// connection will be closed automatically after the response is sent. If
/// |content_length| is < 0 then no "Content-Length" header will be sent and
/// the client will continue reading until the connection is closed. Use the
/// SendRawData function to send the content, if applicable, and call
/// CloseConnection after all content has been sent.
///
void(CEF_CALLBACK* send_http_response)(struct _cef_server_t* self,
int connection_id,
int response_code,
const cef_string_t* content_type,
int64_t content_length,
cef_string_multimap_t extra_headers);
///
/// Send raw data directly to the connection identified by |connection_id|.
/// |data| is the raw data and |data_size| is the size of |data| in bytes. The
/// contents of |data| will be copied. No validation of |data| is performed
/// internally so the client should be careful to send the amount indicated by
/// the "Content-Length" header, if specified. See SendHttpResponse
/// documentation for intended usage.
///
void(CEF_CALLBACK* send_raw_data)(struct _cef_server_t* self,
int connection_id,
const void* data,
size_t data_size);
///
/// Close the connection identified by |connection_id|. See SendHttpResponse
/// documentation for intended usage.
///
void(CEF_CALLBACK* close_connection)(struct _cef_server_t* self,
int connection_id);
///
/// Send a WebSocket message to the connection identified by |connection_id|.
/// |data| is the response content and |data_size| is the size of |data| in
/// bytes. The contents of |data| will be copied. See
/// cef_server_handler_t::OnWebSocketRequest documentation for intended usage.
///
void(CEF_CALLBACK* send_web_socket_message)(struct _cef_server_t* self,
int connection_id,
const void* data,
size_t data_size);
} cef_server_t;
///
/// Create a new server that binds to |address| and |port|. |address| must be a
/// valid IPv4 or IPv6 address (e.g. 127.0.0.1 or ::1) and |port| must be a port
/// number outside of the reserved range (e.g. between 1025 and 65535 on most
/// platforms). |backlog| is the maximum number of pending connections. A new
/// thread will be created for each CreateServer call (the "dedicated server
/// thread"). It is therefore recommended to use a different
/// cef_server_handler_t instance for each CreateServer call to avoid thread
/// safety issues in the cef_server_handler_t implementation. The
/// cef_server_handler_t::OnServerCreated function will be called on the
/// dedicated server thread to report success or failure. See
/// cef_server_handler_t::OnServerCreated documentation for a description of
/// server lifespan.
///
CEF_EXPORT void cef_server_create(const cef_string_t* address,
uint16_t port,
int backlog,
struct _cef_server_handler_t* handler);
///
/// Implement this structure to handle HTTP server requests. A new thread will
/// be created for each cef_server_t::CreateServer call (the "dedicated server
/// thread"), and the functions of this structure will be called on that thread.
/// It is therefore recommended to use a different cef_server_handler_t instance
/// for each cef_server_t::CreateServer call to avoid thread safety issues in
/// the cef_server_handler_t implementation.
///
typedef struct _cef_server_handler_t {
///
/// Base structure.
///
cef_base_ref_counted_t base;
///
/// Called when |server| is created. If the server was started successfully
/// then cef_server_t::IsRunning will return true (1). The server will
/// continue running until cef_server_t::Shutdown is called, after which time
/// OnServerDestroyed will be called. If the server failed to start then
/// OnServerDestroyed will be called immediately after this function returns.
///
void(CEF_CALLBACK* on_server_created)(struct _cef_server_handler_t* self,
struct _cef_server_t* server);
///
/// Called when |server| is destroyed. The server thread will be stopped after
/// this function returns. The client should release any references to
/// |server| when this function is called. See OnServerCreated documentation
/// for a description of server lifespan.
///
void(CEF_CALLBACK* on_server_destroyed)(struct _cef_server_handler_t* self,
struct _cef_server_t* server);
///
/// Called when a client connects to |server|. |connection_id| uniquely
/// identifies the connection. Each call to this function will have a matching
/// call to OnClientDisconnected.
///
void(CEF_CALLBACK* on_client_connected)(struct _cef_server_handler_t* self,
struct _cef_server_t* server,
int connection_id);
///
/// Called when a client disconnects from |server|. |connection_id| uniquely
/// identifies the connection. The client should release any data associated
/// with |connection_id| when this function is called and |connection_id|
/// should no longer be passed to cef_server_t functions. Disconnects can
/// originate from either the client or the server. For example, the server
/// will disconnect automatically after a cef_server_t::SendHttpXXXResponse
/// function is called.
///
void(CEF_CALLBACK* on_client_disconnected)(struct _cef_server_handler_t* self,
struct _cef_server_t* server,
int connection_id);
///
/// Called when |server| receives an HTTP request. |connection_id| uniquely
/// identifies the connection, |client_address| is the requesting IPv4 or IPv6
/// client address including port number, and |request| contains the request
/// contents (URL, function, headers and optional POST data). Call
/// cef_server_t functions either synchronously or asynchronusly to send a
/// response.
///
void(CEF_CALLBACK* on_http_request)(struct _cef_server_handler_t* self,
struct _cef_server_t* server,
int connection_id,
const cef_string_t* client_address,
struct _cef_request_t* request);
///
/// Called when |server| receives a WebSocket request. |connection_id|
/// uniquely identifies the connection, |client_address| is the requesting
/// IPv4 or IPv6 client address including port number, and |request| contains
/// the request contents (URL, function, headers and optional POST data).
/// Execute |callback| either synchronously or asynchronously to accept or
/// decline the WebSocket connection. If the request is accepted then
/// OnWebSocketConnected will be called after the WebSocket has connected and
/// incoming messages will be delivered to the OnWebSocketMessage callback. If
/// the request is declined then the client will be disconnected and
/// OnClientDisconnected will be called. Call the
/// cef_server_t::SendWebSocketMessage function after receiving the
/// OnWebSocketConnected callback to respond with WebSocket messages.
///
void(CEF_CALLBACK* on_web_socket_request)(struct _cef_server_handler_t* self,
struct _cef_server_t* server,
int connection_id,
const cef_string_t* client_address,
struct _cef_request_t* request,
struct _cef_callback_t* callback);
///
/// Called after the client has accepted the WebSocket connection for |server|
/// and |connection_id| via the OnWebSocketRequest callback. See
/// OnWebSocketRequest documentation for intended usage.
///
void(CEF_CALLBACK* on_web_socket_connected)(
struct _cef_server_handler_t* self,
struct _cef_server_t* server,
int connection_id);
///
/// Called when |server| receives an WebSocket message. |connection_id|
/// uniquely identifies the connection, |data| is the message content and
/// |data_size| is the size of |data| in bytes. Do not keep a reference to
/// |data| outside of this function. See OnWebSocketRequest documentation for
/// intended usage.
///
void(CEF_CALLBACK* on_web_socket_message)(struct _cef_server_handler_t* self,
struct _cef_server_t* server,
int connection_id,
const void* data,
size_t data_size);
} cef_server_handler_t;
#ifdef __cplusplus
}
#endif
#endif // CEF_INCLUDE_CAPI_CEF_SERVER_CAPI_H_
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