mirror of
https://github.com/DJ2LS/FreeDATA
synced 2024-05-14 08:04:33 +00:00
439 lines
14 KiB
JavaScript
439 lines
14 KiB
JavaScript
var net = require('net');
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const path = require('path')
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const {
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ipcRenderer
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} = require('electron')
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const log = require('electron-log');
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const socketLog = log.scope('tnc');
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const utf8 = require('utf8');
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// https://stackoverflow.com/a/26227660
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var appDataFolder = process.env.APPDATA || (process.platform == 'darwin' ? process.env.HOME + '/Library/Application Support' : process.env.HOME + "/.config")
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var configFolder = path.join(appDataFolder, "FreeDATA");
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var configPath = path.join(configFolder, 'config.json')
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const config = require(configPath);
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var client = new net.Socket();
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var socketchunk = ''; // Current message, per connection.
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// split character
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const split_char = '\0;'
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// globals for getting new data only if available so we are saving bandwith
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var rxBufferLengthTnc = 0
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var rxBufferLengthGui = 0
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var rxMsgBufferLengthTnc = 0
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var rxMsgBufferLengthGui = 0
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// network connection Timeout
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setTimeout(connectTNC, 2000)
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function connectTNC() {
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//exports.connectTNC = function(){
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//socketLog.info('connecting to TNC...')
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//clear message buffer after reconnecting or inital connection
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socketchunk = '';
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if (config.tnclocation == 'localhost') {
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client.connect(3000, '127.0.0.1')
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} else {
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client.connect(config.tnc_port, config.tnc_host)
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}
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}
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client.on('connect', function(data) {
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socketLog.info('TNC connection established')
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let Data = {
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busy_state: "-",
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arq_state: "-",
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//channel_state: "-",
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frequency: "-",
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mode: "-",
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bandwith: "-",
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rms_level: 0
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};
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ipcRenderer.send('request-update-tnc-state', Data);
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// also update tnc connection state
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ipcRenderer.send('request-update-tnc-connection', {tnc_connection : client.readyState});
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})
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client.on('error', function(data) {
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socketLog.error('TNC connection error');
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socketLog.error(data);
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let Data = {
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tnc_connection: client.readyState,
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busy_state: "-",
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arq_state: "-",
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//channel_state: "-",
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frequency: "-",
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mode: "-",
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bandwith: "-",
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rms_level: 0
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};
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ipcRenderer.send('request-update-tnc-state', Data);
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ipcRenderer.send('request-update-tnc-connection', {tnc_connection : client.readyState});
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client.destroy();
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setTimeout(connectTNC, 500)
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// setTimeout( function() { exports.connectTNC(tnc_host, tnc_port); }, 2000 );
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});
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/*
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client.on('close', function(data) {
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socketLog.info(' TNC connection closed');
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setTimeout(connectTNC, 2000)
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});
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*/
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client.on('end', function(data) {
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socketLog.info('TNC connection ended');
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ipcRenderer.send('request-update-tnc-connection', {tnc_connection : client.readyState});
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client.destroy();
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setTimeout(connectTNC, 500)
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});
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writeTncCommand = function(command) {
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//socketLog.info(command)
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// we use the writingCommand function to update our TCPIP state because we are calling this function a lot
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// if socket openend, we are able to run commands
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if (client.readyState == 'open') {
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client.write(command + '\n');
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}
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if (client.readyState == 'closed') {
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socketLog.info("CLOSED!")
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}
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if (client.readyState == 'opening') {
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socketLog.info('connecting to TNC...')
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}
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}
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client.on('data', function(socketdata) {
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ipcRenderer.send('request-update-tnc-connection', {tnc_connection : client.readyState});
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/*
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inspired by:
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stackoverflow.com questions 9070700 nodejs-net-createserver-large-amount-of-data-coming-in
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*/
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socketdata = socketdata.toString('utf8'); // convert data to string
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socketchunk += socketdata// append data to buffer so we can stick long data together
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// check if we received begin and end of json data
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if (socketchunk.startsWith('{"') && socketchunk.endsWith('"}\n')) {
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var data = ''
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// split data into chunks if we received multiple commands
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socketchunk = socketchunk.split("\n");
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data = JSON.parse(socketchunk[0])
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// search for empty entries in socketchunk and remove them
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for (i = 0; i < socketchunk.length; i++) {
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if (socketchunk[i] === ''){
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socketchunk.splice(i, 1);
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}
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}
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//iterate through socketchunks array to execute multiple commands in row
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for (i = 0; i < socketchunk.length; i++) {
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//check if data is not empty
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if(socketchunk[i].length > 0){
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//try to parse JSON
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try {
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data = JSON.parse(socketchunk[i])
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} catch (e) {
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socketLog.info(e); // "SyntaxError
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socketLog.info(socketchunk[i])
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socketchunk = ''
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}
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}
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if (data['command'] == 'tnc_state') {
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//socketLog.info(data)
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// set length of RX Buffer to global variable
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rxBufferLengthTnc = data['rx_buffer_length']
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rxMsgBufferLengthTnc = data['rx_msg_buffer_length']
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let Data = {
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ptt_state: data['ptt_state'],
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busy_state: data['tnc_state'],
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arq_state: data['arq_state'],
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arq_session: data['arq_session'],
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//channel_state: data['CHANNEL_STATE'],
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frequency: data['frequency'],
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speed_level: data['speed_level'],
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mode: data['mode'],
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bandwith: data['bandwith'],
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rms_level: (data['audio_rms'] / 1000) * 100,
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fft: data['fft'],
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channel_busy: data['channel_busy'],
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scatter: data['scatter'],
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info: data['info'],
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rx_buffer_length: data['rx_buffer_length'],
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rx_msg_buffer_length: data['rx_msg_buffer_length'],
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tx_n_max_retries: data['tx_n_max_retries'],
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arq_tx_n_frames_per_burst: data['arq_tx_n_frames_per_burst'],
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arq_tx_n_bursts: data['arq_tx_n_bursts'],
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arq_tx_n_current_arq_frame: data['arq_tx_n_current_arq_frame'],
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arq_tx_n_total_arq_frames: data['arq_tx_n_total_arq_frames'],
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arq_rx_frame_n_bursts: data['arq_rx_frame_n_bursts'],
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arq_rx_n_current_arq_frame: data['arq_rx_n_current_arq_frame'],
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arq_n_arq_frames_per_data_frame: data['arq_n_arq_frames_per_data_frame'],
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arq_bytes_per_minute: data['arq_bytes_per_minute'],
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arq_compression_factor: data['arq_compression_factor'],
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total_bytes: data['total_bytes'],
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arq_transmission_percent: data['arq_transmission_percent'],
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stations: data['stations'],
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beacon_state: data['beacon_state'],
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};
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ipcRenderer.send('request-update-tnc-state', Data);
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}
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// update transmission status
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if (data['arq'] == 'transmission'){
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socketLog.info(data)
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let state = {
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status: data['status'],
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uuid: data['uuid'],
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};
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ipcRenderer.send('request-update-transmission-status', state);
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}
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/* A TEST WITH STREAMING DATA .... */
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// if we received data through network stream, we get a single data item
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if (data['arq'] == 'received') {
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dataArray = []
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messageArray = []
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socketLog.info(data)
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// we need to encode here to do a deep check for checking if file or message
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var encoded_data = atob(data['data'])
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var splitted_data = encoded_data.split(split_char)
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if(splitted_data[0] == 'f'){
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dataArray.push(data)
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}
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if(splitted_data[0] == 'm'){
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messageArray.push(data)
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}
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rxBufferLengthGui = dataArray.length
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let Files = {
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data: dataArray,
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};
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ipcRenderer.send('request-update-rx-buffer', Files);
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rxMsgBufferLengthGui = messageArray.length
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let Messages = {
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data: messageArray,
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};
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//ipcRenderer.send('request-update-rx-msg-buffer', Messages);
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ipcRenderer.send('request-new-msg-received', Messages);
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}
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// if we manually checking for the rx buffer we are getting an array of multiple data
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if (data['command'] == 'rx_buffer') {
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socketLog.info(data)
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// iterate through buffer list and sort it to file or message array
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dataArray = []
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messageArray = []
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for (i = 0; i < data['data-array'].length; i++) {
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try{
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// we need to encode here to do a deep check for checking if file or message
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var encoded_data = atob(data['data-array'][i]['data'])
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var splitted_data = encoded_data.split(split_char)
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if(splitted_data[0] == 'f'){
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dataArray.push(data['data-array'][i])
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}
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if(splitted_data[0] == 'm'){
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messageArray.push(data['data-array'][i])
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}
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} catch (e) {
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socketLog.info(e)
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}
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}
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rxBufferLengthGui = dataArray.length
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let Files = {
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data: dataArray,
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};
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ipcRenderer.send('request-update-rx-buffer', Files);
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rxMsgBufferLengthGui = messageArray.length
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let Messages = {
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data: messageArray,
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};
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//ipcRenderer.send('request-update-rx-msg-buffer', Messages);
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ipcRenderer.send('request-new-msg-received', Messages);
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}
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}
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//finally delete message buffer
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socketchunk = '';
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}
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});
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function hexToBytes(hex) {
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for (var bytes = [], c = 0; c < hex.length; c += 2)
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bytes.push(parseInt(hex.substr(c, 2), 16));
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return bytes;
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}
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//Get TNC State
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exports.getTncState = function() {
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command = '{"type" : "get", "command" : "tnc_state"}';
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writeTncCommand(command)
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}
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//Get DATA State
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exports.getDataState = function() {
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command = '{"type" : "get", "command" : "data_state"}';
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//writeTncCommand(command)
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}
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// Send Ping
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exports.sendPing = function(dxcallsign) {
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command = '{"type" : "ping", "command" : "ping", "dxcallsign" : "' + dxcallsign + '"}'
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writeTncCommand(command)
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}
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// Send CQ
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exports.sendCQ = function() {
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command = '{"type" : "broadcast", "command" : "cqcqcq"}'
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writeTncCommand(command)
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}
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// Send File
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exports.sendFile = function(dxcallsign, mode, frames, filename, filetype, data, checksum) {
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socketLog.info(data)
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socketLog.info(filetype)
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socketLog.info(filename)
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var datatype = "f"
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data = datatype + split_char + filename + split_char + filetype + split_char + checksum + split_char + data
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socketLog.info(data)
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socketLog.info(btoa(data))
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data = btoa(data)
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command = '{"type" : "arq", "command" : "send_raw", "parameter" : [{"dxcallsign" : "' + dxcallsign + '", "mode" : "' + mode + '", "n_frames" : "' + frames + '", "data" : "' + data + '"}]}'
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writeTncCommand(command)
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}
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// Send Message
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exports.sendMessage = function(dxcallsign, mode, frames, data, checksum, uuid, command) {
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socketLog.info(data)
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// convert message to plain utf8 because of unicode emojis
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data = utf8.encode(data)
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socketLog.info(data)
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var datatype = "m"
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data = datatype + split_char + command + split_char + checksum + split_char + uuid + split_char + data
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socketLog.info(data)
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socketLog.info(btoa(data))
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data = btoa(data)
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//command = '{"type" : "arq", "command" : "send_message", "parameter" : [{ "dxcallsign" : "' + dxcallsign + '", "mode" : "' + mode + '", "n_frames" : "' + frames + '", "data" : "' + data + '" , "checksum" : "' + checksum + '"}]}'
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command = '{"type" : "arq", "command" : "send_raw", "uuid" : "'+ uuid +'", "parameter" : [{"dxcallsign" : "' + dxcallsign + '", "mode" : "' + mode + '", "n_frames" : "' + frames + '", "data" : "' + data + '"}]}'
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socketLog.info(command)
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socketLog.info("-------------------------------------")
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writeTncCommand(command)
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}
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//STOP TRANSMISSION
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exports.stopTransmission = function() {
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command = '{"type" : "arq", "command": "stop_transmission"}'
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writeTncCommand(command)
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}
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// Get RX BUffer
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exports.getRxBuffer = function() {
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command = '{"type" : "get", "command" : "rx_buffer"}'
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// call command only if new data arrived
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if (rxBufferLengthGui != rxBufferLengthTnc) {
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writeTncCommand(command)
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}
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}
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// START BEACON
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exports.startBeacon = function(interval) {
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command = '{"type" : "broadcast", "command" : "start_beacon", "parameter": "' + interval + '"}'
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writeTncCommand(command)
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}
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// STOP BEACON
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exports.stopBeacon = function() {
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command = '{"type" : "broadcast", "command" : "stop_beacon"}'
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writeTncCommand(command)
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}
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// OPEN ARQ SESSION
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exports.connectARQ = function(dxcallsign) {
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command = '{"type" : "arq", "command" : "connect", "dxcallsign": "'+ dxcallsign + '"}'
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writeTncCommand(command)
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}
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// CLOSE ARQ SESSION
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exports.disconnectARQ = function() {
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command = '{"type" : "arq", "command" : "disconnect"}'
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writeTncCommand(command)
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}
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