Sun, 14 Apr 2024 12:46:02 +0200
Add stylesheet, about page. Add menu for fermenters. Add websocket port setup to the config server.
675
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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1 | /** |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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2 | * @file websocket.c |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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3 | * @brief WebSockets interface |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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4 | * @author Michiel Broek <mbroek at mbse dot eu> |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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5 | * |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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6 | * Copyright (C) 2024 |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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7 | * |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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8 | * Michiel Broek <mbroek at mbse dot eu> |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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9 | * |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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10 | * This file is part of the mbsePi-apps |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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11 | * |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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12 | * This is free software; you can redistribute it and/or modify it |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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13 | * under the terms of the GNU General Public License as published by the |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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14 | * Free Software Foundation; either version 2, or (at your option) any |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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15 | * later version. |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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16 | * |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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17 | * bms is distributed in the hope that it will be useful, but |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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18 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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20 | * General Public License for more details. |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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21 | * |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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22 | * You should have received a copy of the GNU General Public License |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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23 | * along with ThermFerm; see the file COPYING. If not, write to the Free |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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24 | * Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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25 | */ |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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26 | |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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27 | #include "thermferm.h" |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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28 | #include "xutil.h" |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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29 | #include "websocket.h" |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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30 | #include <libwebsockets.h> |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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31 | |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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32 | |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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33 | extern sys_config Config; |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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34 | extern int debug; |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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35 | |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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36 | int my_ws_shutdown = 0; |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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37 | int my_ws_state = 0; |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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38 | struct lws_context *context; |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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39 | int ws_clients = 0; |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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40 | time_t last_msg = 0; |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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41 | pthread_mutex_t ws_mutex; |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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42 | |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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43 | |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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44 | /* |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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45 | * Based on lws-mirror-protocol |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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46 | */ |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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47 | #define MAX_MESSAGE_QUEUE 512 |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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48 | |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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49 | #define WS_INBUF 2048 |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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50 | |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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51 | |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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52 | /* |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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53 | * one of these created for each message |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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54 | */ |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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55 | struct a_message { |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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56 | void *payload; /* is malloc'd */ |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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57 | size_t len; |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
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58 | }; |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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59 | |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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60 | |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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61 | static struct a_message ringbuffer[MAX_MESSAGE_QUEUE]; |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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62 | static int ringbuffer_head; |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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63 | |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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64 | |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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65 | |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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66 | static int callback_ws(struct lws *wsi, enum lws_callback_reasons reason, void *user, void *in, size_t len) |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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67 | { |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
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68 | struct per_session_data__lws_mirror *pss = (struct per_session_data__lws_mirror *)user; |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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69 | int n, m; |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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70 | char buf[WS_INBUF + 1]; |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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71 | |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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72 | switch (reason) { |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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73 | |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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74 | case LWS_CALLBACK_ESTABLISHED: { |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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75 | ws_clients++; |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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76 | pss->ringbuffer_tail = ringbuffer_head; |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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77 | pss->wsi = wsi; |
676
09b5efe0c633
Add stylesheet, about page. Add menu for fermenters. Add websocket port setup to the config server.
Michiel Broek <mbroek@mbse.eu>
parents:
675
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78 | syslog(LOG_NOTICE, "Websocket: new client, now %d", ws_clients); |
675
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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79 | break; |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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80 | } |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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81 | |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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82 | case LWS_CALLBACK_PROTOCOL_DESTROY: |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
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83 | syslog(LOG_NOTICE, "Websocket: protocol cleaning up"); |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
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84 | for (n = 0; n < sizeof ringbuffer / sizeof ringbuffer[0]; n++) |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
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parents:
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85 | if (ringbuffer[n].payload) |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
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86 | free(ringbuffer[n].payload); |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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87 | break; |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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88 | |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
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89 | case LWS_CALLBACK_SERVER_WRITEABLE: |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
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parents:
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90 | while (pss->ringbuffer_tail != ringbuffer_head) { |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
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parents:
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91 | m = ringbuffer[pss->ringbuffer_tail].len; |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
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92 | n = lws_write(wsi, (unsigned char *)ringbuffer[pss->ringbuffer_tail].payload + LWS_PRE, m, LWS_WRITE_TEXT); |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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93 | if (n < 0) { |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
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94 | syslog(LOG_NOTICE, "ws: ERROR %d writing", n); |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
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95 | return -1; |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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96 | } |
825210ba2707
Added websockets to thermferm. Started new www directory for websocket enabled web. The init script now waits until thermferm is completely stopped.
Michiel Broek <mbroek@mbse.eu>
parents:
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97 | if (n < m) |
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98 | syslog(LOG_NOTICE, "ws: partial write %d vs %d", n, m); |
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99 | |
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100 | if (pss->ringbuffer_tail == (MAX_MESSAGE_QUEUE - 1)) |
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101 | pss->ringbuffer_tail = 0; |
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102 | else |
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103 | pss->ringbuffer_tail++; |
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104 | |
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105 | if (((ringbuffer_head - pss->ringbuffer_tail) & (MAX_MESSAGE_QUEUE - 1)) == (MAX_MESSAGE_QUEUE - 15)) |
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106 | lws_rx_flow_allow_all_protocol(lws_get_context(wsi), lws_get_protocol(wsi)); |
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107 | |
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108 | if (lws_send_pipe_choked(wsi)) { |
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109 | lws_callback_on_writable(wsi); |
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110 | break; |
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111 | } |
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112 | } |
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113 | break; |
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114 | |
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115 | case LWS_CALLBACK_RECEIVE: |
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116 | |
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117 | memcpy(buf, in, len); |
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118 | buf[len] = '\0'; |
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119 | syslog(LOG_NOTICE, "ws: reveived %ld bytes %s", len, buf); |
675
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120 | /* |
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121 | * These are send by bmsapp to bmsd. Then bmsd resends these via MQTT. |
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122 | * Do we want to change that? Or use it for the new web pages. |
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123 | * {"node":"rpi01","group_id":"fermenters","control":"reboot"} |
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124 | * {"node":"rpi01","group_id":"fermenters","control":"rebirth"} |
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125 | */ |
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126 | // if (strncmp(buf, (char *)"{\"device\":\"fermenters\",", 23) == 0) { |
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127 | // fermenter_ws_receive(buf); |
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128 | // } else if (strncmp(buf, (char *)"{\"device\":\"co2meters\",", 22) == 0) { |
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129 | // co2meter_ws_receive(buf); |
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130 | // } else if (strncmp(buf, (char *)"{\"device\":\"ispindels\",", 22) == 0) { |
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131 | // ispindel_ws_receive(buf); |
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132 | // } else if (strncmp(buf, (char *)"{\"node\":\"", 9) == 0) { |
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133 | // node_ws_receive(buf); |
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134 | // } |
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135 | |
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136 | break; |
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137 | |
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138 | case LWS_CALLBACK_CLOSED: |
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139 | ws_clients--; |
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140 | syslog(LOG_NOTICE, "Websocket: del client, now %d", ws_clients); |
675
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141 | break; |
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142 | |
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143 | default: |
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144 | break; |
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145 | } |
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146 | |
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147 | return 0; |
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148 | } |
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149 | |
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150 | |
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151 | |
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152 | static struct lws_protocols protocols[] = { |
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153 | { "thermferm-protocol", callback_ws, sizeof(struct per_session_data__lws_mirror), WS_INBUF }, |
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154 | { NULL, NULL, 0, 0 } /* terminator */ |
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155 | }; |
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156 | |
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157 | |
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158 | /* |
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159 | * {"node":"host","group":"group","online":1,"lastseen":"datetime","temperature":20.5,"humidity":47,"ip":"ipaddr","rssi":-1} |
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160 | * {"device":"fermenters","node":"seaport","unit":"unit0","online":1,"mode":"FRIDGE","yeast_lo":12.0,"yeast_hi":24.0,"air":19.875,"beer":19.812,"chiller":1.500,"heater":100,"cooler":0,"fan":100,"light":0,"door":0,"sp_lo":17.0,"sp_hi":17.5,"alarm":0,"stage":"PRIMARY"} |
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161 | */ |
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162 | void ws_broadcast(char *msg) |
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163 | { |
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164 | int len, err; |
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165 | |
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166 | syslog(LOG_NOTICE, "%s", msg); |
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167 | err = pthread_mutex_lock(&ws_mutex); |
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168 | if (err) { |
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169 | syslog(LOG_NOTICE, "ws_broadcast pthread_mutex_lock error %d", err); |
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170 | } else { |
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171 | |
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172 | len = strlen(msg); |
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173 | if (ringbuffer[ringbuffer_head].payload) |
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174 | free(ringbuffer[ringbuffer_head].payload); |
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175 | |
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176 | ringbuffer[ringbuffer_head].payload = malloc(LWS_PRE + len); |
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177 | ringbuffer[ringbuffer_head].len = len; |
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178 | memcpy((char *)ringbuffer[ringbuffer_head].payload + LWS_PRE, msg, len); |
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179 | if (ringbuffer_head == (MAX_MESSAGE_QUEUE - 1)) |
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180 | ringbuffer_head = 0; |
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181 | else |
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182 | ringbuffer_head++; |
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183 | |
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184 | // syslog(LOG_NOTICE, "ws: broadcast buffer=%d len=%d", ringbuffer_head, len); |
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185 | |
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186 | lws_callback_on_writable_all_protocol(context, &protocols[0]); |
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187 | err = pthread_mutex_unlock(&ws_mutex); |
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188 | if (err) { |
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189 | syslog(LOG_NOTICE, "ws_broadcast pthread_mutex_unlock error %d", err); |
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190 | } |
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191 | last_msg = time(NULL); |
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192 | } |
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193 | } |
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194 | |
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195 | |
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196 | |
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197 | /* |
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198 | * Called every 5 seconds. |
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199 | */ |
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200 | void ws_check(void) |
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201 | { |
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202 | time_t now = time(NULL); |
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203 | |
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204 | if (((int)now - (int)last_msg) > 45) { |
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205 | ws_broadcast((char *)"{\"ping\":1}"); |
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206 | } |
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207 | } |
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208 | |
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209 | |
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210 | |
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211 | void *my_ws_loop(void *threadid) |
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212 | { |
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213 | struct lws_context_creation_info info; |
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214 | int n = 0; |
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215 | |
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216 | my_ws_state = 1; |
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217 | memset(&info, 0, sizeof info); /* otherwise uninitialized garbage */ |
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218 | info.port = Config.websocket_port; |
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219 | info.protocols = protocols; |
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220 | info.gid = -1; |
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221 | info.uid = -1; |
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222 | info.keepalive_timeout = 900; |
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223 | info.options = LWS_SERVER_OPTION_VALIDATE_UTF8; |
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224 | |
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225 | context = lws_create_context(&info); |
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226 | |
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227 | if (context == NULL) { |
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228 | syslog(LOG_NOTICE, "libwebsocket_create_context() failed"); |
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229 | my_ws_state = 0; |
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230 | return (void *)1; |
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231 | } |
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232 | syslog(LOG_NOTICE, "Websocket: server started port %d", info.port); |
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233 | |
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234 | /* |
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235 | * Loop forever until external shutdown variable is set. |
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236 | */ |
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237 | while (n >= 0 && ! my_ws_shutdown) { |
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238 | |
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239 | n = lws_service(context, 50); |
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240 | } |
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241 | lws_context_destroy(context); |
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242 | |
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243 | my_ws_state = 0; |
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244 | syslog(LOG_NOTICE, "Websocket: server stopped"); |
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245 | return (void *)0; |
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246 | } |
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247 | |
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248 |