1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
|
/*
* Copyright (C) 2020 Luciano Iam <lucianito@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef _ardour_surface_websockets_server_h_
#define _ardour_surface_websockets_server_h_
#include <boost/unordered_map.hpp>
#include <glibmm.h>
#include <libwebsockets.h>
#if LWS_LIBRARY_VERSION_MAJOR < 3
// <libwebsockets.h> includes <uv.h> which in turn includes
// /usr/include/asm-generic/param.h on linux which defines HZ
// and conflicts with libs/ardour/ardour/parameter_descriptor.h
#undef HZ
#else
// also libwebsockets >=3 already includes integration with the glib event loop
// but ubuntu default repositories are stuck at version 2, hold until requiring
// version 3 in order to keep things simpler for the end user
#endif
#include "client.h"
#include "component.h"
#include "message.h"
#include "state.h"
#include "resources.h"
#define WEBSOCKET_LISTEN_PORT 3818
struct LwsPollFdGlibSource {
struct lws_pollfd lws_pfd;
Glib::RefPtr<Glib::IOChannel> g_channel;
Glib::RefPtr<Glib::IOSource> rg_iosrc;
Glib::RefPtr<Glib::IOSource> wg_iosrc;
};
class WebsocketsServer : public SurfaceComponent
{
public:
WebsocketsServer (ArdourSurface::ArdourWebsockets&);
virtual ~WebsocketsServer (){};
int start ();
int stop ();
void update_client (Client, const NodeState&, bool);
void update_all_clients (const NodeState&, bool);
private:
struct lws_protocols _lws_proto[2];
struct lws_http_mount _lws_mnt_index;
struct lws_http_mount _lws_mnt_user;
struct lws_context_creation_info _lws_info;
struct lws_context* _lws_context;
Glib::RefPtr<Glib::IOChannel> _channel;
typedef boost::unordered_map<lws_sockfd_type, LwsPollFdGlibSource> LwsPollFdGlibSourceMap;
LwsPollFdGlibSourceMap _fd_ctx;
typedef boost::unordered_map<Client, ClientContext> ClientContextMap;
ClientContextMap _client_ctx;
ServerResources _resources;
int add_poll_fd (struct lws_pollargs*);
int mod_poll_fd (struct lws_pollargs*);
int del_poll_fd (struct lws_pollargs*);
int add_client (Client);
int del_client (Client);
int recv_client (Client, void*, size_t);
int write_client (Client);
int send_availsurf_hdr (Client);
int send_availsurf_body (Client);
bool io_handler (Glib::IOCondition, lws_sockfd_type);
Glib::IOCondition events_to_ioc (int);
int ioc_to_events (Glib::IOCondition);
static int lws_callback (struct lws*, enum lws_callback_reasons, void*, void*, size_t);
};
#endif // _ardour_surface_websockets_server_h_
|
