FreeDATA/gui/sock.js

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var net = require('net');
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const path = require('path')
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const {
ipcRenderer
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} = require('electron')
// 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')
const config = require(configPath);
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var client = new net.Socket();
var msg = ''; // Current message, per connection.
// globals for getting new data only if available so we are saving bandwith
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var rxBufferLengthTnc = 0
var rxBufferLengthGui = 0
var rxMsgBufferLengthTnc = 0
var rxMsgBufferLengthGui = 0
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// network connection Timeout
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setTimeout(connectTNC, 3000)
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function connectTNC() {
//exports.connectTNC = function(){
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//console.log('connecting to TNC...')
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//clear message buffer after reconnecting or inital connection
msg = '';
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if (config.tnclocation == 'localhost') {
client.connect(3000, '127.0.0.1')
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} else {
client.connect(config.tnc_port, config.tnc_host)
}
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}
client.on('connect', function(data) {
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console.log('TNC connection established')
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})
client.on('error', function(data) {
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console.log('TNC connection error');
let Data = {
busy_state: "-",
arq_state: "-",
channel_state: "-",
frequency: "-",
mode: "-",
bandwith: "-",
rms_level: 0
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};
ipcRenderer.send('request-update-tnc-state', Data);
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setTimeout(connectTNC, 2000)
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// setTimeout( function() { exports.connectTNC(tnc_host, tnc_port); }, 2000 );
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});
/*
client.on('close', function(data) {
console.log(' TNC connection closed');
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setTimeout(connectTNC, 2000)
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});
*/
client.on('end', function(data) {
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console.log('TNC connection ended');
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//setTimeout(connectTNC, 2000)
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setTimeout(connectTNC, 0)
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// setTimeout( function() { exports.connectTNC(tnc_host, tnc_port); }, 2000 );
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});
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//exports.writeTncCommand = function(command){
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writeTncCommand = function(command) {
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//console.log(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
if (client.readyState == 'open') {
//uiMain.setTNCconnection('open')
client.write(command + '\n');
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}
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if (client.readyState == 'closed') {
//uiMain.setTNCconnection('closed')
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//console.log("CLOSED!!!!!")
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}
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if (client.readyState == 'opening') {
//uiMain.setTNCconnection('opening')
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//console.log("OPENING!!!!!")
console.log('connecting to TNC...')
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}
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}
client.on('data', function(data) {
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/*
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stackoverflow.com questions 9070700 nodejs-net-createserver-large-amount-of-data-coming-in
*/
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data = data.toString('utf8'); // convert data to string
msg += data.toString('utf8'); // append data to buffer so we can stick long data together
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//console.log(data)
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// check if we reached an EOF, if true, clear buffer and parse JSON data
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if (data.endsWith('"EOF":"EOF"}')) {
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//console.log(msg)
try {
//console.log(msg)
data = JSON.parse(msg)
} catch (e) {
console.log(e); /* "SyntaxError*/
}
msg = '';
/* console.log("EOF detected!") */
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//console.log(data)
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if (data['COMMAND'] == 'TNC_STATE') {
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//console.log(data)
// set length of RX Buffer to global variable
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rxBufferLengthTnc = data['RX_BUFFER_LENGTH']
rxMsgBufferLengthTnc = data['RX_MSG_BUFFER_LENGTH']
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let Data = {
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toe: Date.now() - data['TIMESTAMP'], // time of execution
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ptt_state: data['PTT_STATE'],
busy_state: data['TNC_STATE'],
arq_state: data['ARQ_STATE'],
channel_state: data['CHANNEL_STATE'],
frequency: data['FREQUENCY'],
mode: data['MODE'],
bandwith: data['BANDWITH'],
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rms_level: (data['AUDIO_RMS'] / 1000) * 100,
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fft: data['FFT'],
scatter: data['SCATTER'],
info: data['INFO'],
rx_buffer_length: data['RX_BUFFER_LENGTH'],
rx_msg_buffer_length: data['RX_MSG_BUFFER_LENGTH'],
tx_n_max_retries: data['TX_N_MAX_RETRIES'],
arq_tx_n_frames_per_burst: data['ARQ_TX_N_FRAMES_PER_BURST'],
arq_tx_n_bursts: data['ARQ_TX_N_BURSTS'],
arq_tx_n_current_arq_frame: data['ARQ_TX_N_CURRENT_ARQ_FRAME'],
arq_tx_n_total_arq_frames: data['ARQ_TX_N_TOTAL_ARQ_FRAMES'],
arq_rx_frame_n_bursts: data['ARQ_RX_FRAME_N_BURSTS'],
arq_rx_n_current_arq_frame: data['ARQ_RX_N_CURRENT_ARQ_FRAME'],
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'],
total_bytes: data['TOTAL_BYTES'],
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arq_transmission_percent: data['ARQ_TRANSMISSION_PERCENT'],
stations: data['STATIONS'],
beacon_state: data['BEACON_STATE'],
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};
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//console.log(Data)
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ipcRenderer.send('request-update-tnc-state', Data);
}
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if (data['COMMAND'] == 'RX_BUFFER') {
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rxBufferLengthGui = data['DATA-ARRAY'].length
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let Data = {
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data: data['DATA-ARRAY'],
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};
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ipcRenderer.send('request-update-rx-buffer', Data);
}
if (data['COMMAND'] == 'RX_MSG_BUFFER') {
rxMsgBufferLengthGui = data['DATA-ARRAY'].length
let Data = {
data: data['DATA-ARRAY'],
};
ipcRenderer.send('request-update-rx-msg-buffer', Data);
}
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// check if EOF ...
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}
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});
function hexToBytes(hex) {
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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//Save myCall
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exports.saveMyCall = function(callsign) {
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command = '{"type" : "SET", "command": "MYCALLSIGN" , "parameter": "' + callsign + '", "timestamp" : ' + Date.now() + '}'
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writeTncCommand(command)
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}
// Save myGrid
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exports.saveMyGrid = function(grid) {
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command = '{"type" : "SET", "command": "MYGRID" , "parameter": "' + grid + '", "timestamp" : ' + Date.now() + '}'
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writeTncCommand(command)
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}
//Get TNC State
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exports.getTncState = function() {
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command = '{"type" : "GET", "command" : "TNC_STATE", "timestamp" : ' + Date.now() + '}';
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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", "timestamp" : ' + Date.now() + '}';
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//writeTncCommand(command)
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}
//Get Heard Stations
//exports.getHeardStations = function() {
// command = '{"type" : "GET", "command" : "HEARD_STATIONS", "timestamp" : ' + Date.now() + '}';
// writeTncCommand(command)
//}
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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 + '", "timestamp" : ' + Date.now() + '}'
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writeTncCommand(command)
}
// Send CQ
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exports.sendCQ = function() {
command = '{"type" : "BROADCAST", "command" : "CQCQCQ", "timestamp" : ' + Date.now() + '}'
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writeTncCommand(command)
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}
// Send File
exports.sendFile = function(dxcallsign, mode, frames, filename, filetype, data, checksum) {
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command = '{"type" : "ARQ", "command" : "sendFile", "dxcallsign" : "' + dxcallsign + '", "mode" : "' + mode + '", "n_frames" : "' + frames + '", "filename" : "' + filename + '", "filetype" : "' + filetype + '", "data" : "' + data + '", "checksum" : "' + checksum + '", "timestamp" : ' + Date.now() + '}'
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writeTncCommand(command)
}
// Send Message
exports.sendMessage = function(dxcallsign, mode, frames, data, checksum) {
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command = '{"type" : "ARQ", "command" : "sendMessage", "dxcallsign" : "' + dxcallsign + '", "mode" : "' + mode + '", "n_frames" : "' + frames + '", "data" : "' + data + '" , "checksum" : "' + checksum + '", "timestamp" : ' + Date.now() + '}'
console.log(command)
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writeTncCommand(command)
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}
//STOP TRANSMISSION
exports.stopTransmission = function() {
command = '{"type" : "ARQ", "command": "stopTransmission", "timestamp" : ' + Date.now() + '}'
writeTncCommand(command)
}
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// Get RX BUffer
exports.getRxBuffer = function() {
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command = '{"type" : "GET", "command" : "RX_BUFFER", "timestamp" : ' + Date.now() + '}'
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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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}
// Get RX MSG BUffer
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exports.getMsgRxBuffer = function() {
command = '{"type" : "GET", "command" : "RX_MSG_BUFFER", "timestamp" : ' + Date.now() + '}'
// call command only if new data arrived
if (rxMsgBufferLengthGui != rxMsgBufferLengthTnc) {
writeTncCommand(command)
}
}
// DELETE RX MSG BUffer
exports.delRxMsgBuffer = function() {
command = '{"type" : "SET", "command" : "DEL_RX_MSG_BUFFER", "timestamp" : ' + Date.now() + '}'
// call command only if new data arrived
if (rxMsgBufferLengthGui != rxMsgBufferLengthTnc) {
writeTncCommand(command)
}
}
// START BEACON
exports.startBeacon = function(interval) {
command = '{"type" : "BROADCAST", "command" : "START_BEACON", "parameter": "' + interval + '","timestamp" : ' + Date.now() + '}'
writeTncCommand(command)
}
// STOP BEACON
exports.stopBeacon = function() {
command = '{"type" : "BROADCAST", "command" : "STOP_BEACON", "timestamp" : ' + Date.now() + '}'
writeTncCommand(command)
}