wsjtx support

pull/49/head
accius 2 days ago
parent a94be88f0e
commit 35b0daa2d1

@ -95,6 +95,13 @@ WSJTX_ENABLED=true
# UDP port to listen on (must match WSJT-X Settings > Reporting > UDP Server port) # UDP port to listen on (must match WSJT-X Settings > Reporting > UDP Server port)
WSJTX_UDP_PORT=2237 WSJTX_UDP_PORT=2237
# Relay key for remote WSJT-X relay agent (cloud deployments)
# If you're running OpenHamClock on a cloud server (e.g. Railway, openhamclock.com),
# WSJT-X UDP can't reach it directly. Set this key and run the relay agent
# (wsjtx-relay/relay.js) on your local machine to bridge the gap.
# Pick any strong random string — it must match on both sides.
# WSJTX_RELAY_KEY=your-secret-relay-key-here
# =========================================== # ===========================================
# DX CLUSTER SETTINGS # DX CLUSTER SETTINGS
# =========================================== # ===========================================

@ -13,6 +13,8 @@ services:
# Uncomment and set your timezone (IANA format) # Uncomment and set your timezone (IANA format)
# This ensures correct local time display, especially with privacy browsers # This ensures correct local time display, especially with privacy browsers
# - TZ=America/New_York # - TZ=America/New_York
# Uncomment to enable WSJT-X relay from local machine (cloud deployments)
# - WSJTX_RELAY_KEY=your-secret-relay-key-here
restart: unless-stopped restart: unless-stopped
healthcheck: healthcheck:
test: ["CMD", "wget", "--no-verbose", "--tries=1", "--spider", "http://localhost:3000/api/health"] test: ["CMD", "wget", "--no-verbose", "--tries=1", "--spider", "http://localhost:3000/api/health"]

@ -3611,7 +3611,8 @@ app.get('/api/config', (req, res) => {
dxCluster: true, dxCluster: true,
satellites: true, satellites: true,
contests: true, contests: true,
dxpeditions: true dxpeditions: true,
wsjtxRelay: !!WSJTX_RELAY_KEY,
}, },
// Refresh intervals (ms) // Refresh intervals (ms)
@ -3633,6 +3634,7 @@ app.get('/api/config', (req, res) => {
const WSJTX_UDP_PORT = parseInt(process.env.WSJTX_UDP_PORT || '2237'); const WSJTX_UDP_PORT = parseInt(process.env.WSJTX_UDP_PORT || '2237');
const WSJTX_ENABLED = process.env.WSJTX_ENABLED !== 'false'; // enabled by default const WSJTX_ENABLED = process.env.WSJTX_ENABLED !== 'false'; // enabled by default
const WSJTX_RELAY_KEY = process.env.WSJTX_RELAY_KEY || ''; // auth key for remote relay agent
const WSJTX_MAX_DECODES = 200; // max decodes to keep in memory const WSJTX_MAX_DECODES = 200; // max decodes to keep in memory
const WSJTX_MAX_AGE = 30 * 60 * 1000; // 30 minutes const WSJTX_MAX_AGE = 30 * 60 * 1000; // 30 minutes
@ -4114,6 +4116,7 @@ app.get('/api/wsjtx', (req, res) => {
res.json({ res.json({
enabled: WSJTX_ENABLED, enabled: WSJTX_ENABLED,
port: WSJTX_UDP_PORT, port: WSJTX_UDP_PORT,
relayEnabled: !!WSJTX_RELAY_KEY,
clients, clients,
decodes: wsjtxState.decodes.slice(-100), // last 100 decodes: wsjtxState.decodes.slice(-100), // last 100
qsos: wsjtxState.qsos.slice(-20), // last 20 qsos: wsjtxState.qsos.slice(-20), // last 20
@ -4137,6 +4140,44 @@ app.get('/api/wsjtx/decodes', (req, res) => {
res.json({ decodes, timestamp: Date.now() }); res.json({ decodes, timestamp: Date.now() });
}); });
// API endpoint: relay — receive messages from remote relay agent
// The relay agent runs on the same machine as WSJT-X and forwards
// parsed messages over HTTPS for cloud-hosted instances.
app.post('/api/wsjtx/relay', (req, res) => {
// Auth check
if (!WSJTX_RELAY_KEY) {
return res.status(503).json({ error: 'Relay not configured — set WSJTX_RELAY_KEY in .env' });
}
const authHeader = req.headers.authorization || '';
const token = authHeader.startsWith('Bearer ') ? authHeader.slice(7) : '';
if (token !== WSJTX_RELAY_KEY) {
return res.status(401).json({ error: 'Invalid relay key' });
}
const { messages } = req.body || {};
if (!Array.isArray(messages) || messages.length === 0) {
return res.status(400).json({ error: 'No messages provided' });
}
// Rate limit: max 100 messages per request
const batch = messages.slice(0, 100);
let processed = 0;
for (const msg of batch) {
if (msg && typeof msg.type === 'number' && msg.id) {
// Ensure timestamp is reasonable (within last 5 minutes or use server time)
if (!msg.timestamp || Math.abs(Date.now() - msg.timestamp) > 5 * 60 * 1000) {
msg.timestamp = Date.now();
}
handleWSJTXMessage(msg);
processed++;
}
}
res.json({ ok: true, processed, timestamp: Date.now() });
});
// ============================================ // ============================================
// CATCH-ALL FOR SPA // CATCH-ALL FOR SPA
// ============================================ // ============================================
@ -4183,6 +4224,9 @@ app.listen(PORT, '0.0.0.0', () => {
if (WSJTX_ENABLED) { if (WSJTX_ENABLED) {
console.log(` 🔊 WSJT-X UDP listener on port ${WSJTX_UDP_PORT}`); console.log(` 🔊 WSJT-X UDP listener on port ${WSJTX_UDP_PORT}`);
} }
if (WSJTX_RELAY_KEY) {
console.log(` 🔁 WSJT-X relay endpoint enabled (POST /api/wsjtx/relay)`);
}
console.log(' 🖥️ Open your browser to start using OpenHamClock'); console.log(' 🖥️ Open your browser to start using OpenHamClock');
console.log(''); console.log('');
if (CONFIG.callsign !== 'N0CALL') { if (CONFIG.callsign !== 'N0CALL') {

@ -716,6 +716,7 @@ const App = () => {
wsjtxLoading={wsjtx.loading} wsjtxLoading={wsjtx.loading}
wsjtxEnabled={wsjtx.enabled} wsjtxEnabled={wsjtx.enabled}
wsjtxPort={wsjtx.port} wsjtxPort={wsjtx.port}
wsjtxRelayEnabled={wsjtx.relayEnabled}
showWSJTXOnMap={mapLayers.showWSJTX} showWSJTXOnMap={mapLayers.showWSJTX}
onToggleWSJTXMap={toggleWSJTX} onToggleWSJTXMap={toggleWSJTX}
/> />

@ -26,6 +26,7 @@ const PSKReporterPanel = ({
wsjtxLoading, wsjtxLoading,
wsjtxEnabled, wsjtxEnabled,
wsjtxPort, wsjtxPort,
wsjtxRelayEnabled,
showWSJTXOnMap, showWSJTXOnMap,
onToggleWSJTXMap onToggleWSJTXMap
}) => { }) => {
@ -345,11 +346,23 @@ const PSKReporterPanel = ({
fontSize: '11px', textAlign: 'center', padding: '16px 8px', height: '100%' fontSize: '11px', textAlign: 'center', padding: '16px 8px', height: '100%'
}}> }}>
<div style={{ fontSize: '12px' }}>Waiting for WSJT-X...</div> <div style={{ fontSize: '12px' }}>Waiting for WSJT-X...</div>
{wsjtxRelayEnabled ? (
<div style={{ fontSize: '10px', opacity: 0.6, lineHeight: 1.5 }}>
<span style={{ color: '#a78bfa' }}>Relay mode</span> run the relay agent locally:
<br />
<code style={{ background: 'rgba(167,139,250,0.15)', padding: '1px 4px', borderRadius: '2px', fontSize: '9px' }}>
node relay.js --url {'{this server}'} --key {'{key}'}
</code>
<br />
<span style={{ fontSize: '9px' }}>See wsjtx-relay/README.md</span>
</div>
) : (
<div style={{ fontSize: '10px', opacity: 0.6, lineHeight: 1.5 }}> <div style={{ fontSize: '10px', opacity: 0.6, lineHeight: 1.5 }}>
In WSJT-X: Settings Reporting UDP Server In WSJT-X: Settings Reporting UDP Server
<br /> <br />
Address: 127.0.0.1 &nbsp; Port: {wsjtxPort || 2237} Address: 127.0.0.1 &nbsp; Port: {wsjtxPort || 2237}
</div> </div>
)}
</div> </div>
) : wsjtxTab === 'decodes' ? ( ) : wsjtxTab === 'decodes' ? (
<> <>

@ -0,0 +1,118 @@
# OpenHamClock WSJT-X Relay Agent
Bridges your local WSJT-X instance to a remote OpenHamClock server.
WSJT-X sends decoded FT8/FT4/JT65/WSPR messages via UDP, which only works on the local network. This relay agent captures those UDP packets on your machine and forwards them to your cloud-hosted OpenHamClock instance (e.g. openhamclock.com) over HTTPS.
## How It Works
```
WSJT-X ──UDP──► relay.js (your PC) ──HTTPS──► openhamclock.com
port 2237 /api/wsjtx/relay
```
## Quick Start
### 1. Get Your Relay Key
On your OpenHamClock server, set the `WSJTX_RELAY_KEY` environment variable:
```bash
# In .env file or docker-compose environment:
WSJTX_RELAY_KEY=your-secret-key-here
```
Pick any strong random string. This authenticates the relay so only your agent can push decodes to your server.
### 2. Run the Relay
On the machine running WSJT-X:
```bash
# Download just this folder (or copy it from the repo)
node relay.js --url https://openhamclock.com --key your-secret-key-here
```
Or with environment variables:
```bash
export OPENHAMCLOCK_URL=https://openhamclock.com
export RELAY_KEY=your-secret-key-here
node relay.js
```
### 3. Configure WSJT-X
In WSJT-X:
1. Go to **Settings → Reporting**
2. Under **UDP Server**:
- Address: `127.0.0.1`
- Port: `2237`
- ☑ Accept UDP requests
That's it. The relay will show decoded messages as they come in.
## Requirements
- **Node.js 14+** (no npm install needed — zero dependencies)
- WSJT-X, JTDX, or any software that speaks the WSJT-X UDP protocol
- Network access to your OpenHamClock server
## Options
| Flag | Env Variable | Default | Description |
|------|-------------|---------|-------------|
| `--url` | `OPENHAMCLOCK_URL` | — | Server URL (required) |
| `--key` | `RELAY_KEY` | — | Auth key (required) |
| `--port` | `WSJTX_UDP_PORT` | `2237` | Local UDP port |
| `--interval` | `BATCH_INTERVAL` | `2000` | Batch send interval (ms) |
| `--verbose` | `VERBOSE=true` | off | Show all decoded messages |
## Running as a Service
### Linux (systemd)
```ini
# /etc/systemd/system/wsjtx-relay.service
[Unit]
Description=OpenHamClock WSJT-X Relay
After=network.target
[Service]
ExecStart=/usr/bin/node /path/to/relay.js
Environment=OPENHAMCLOCK_URL=https://openhamclock.com
Environment=RELAY_KEY=your-secret-key
Restart=always
RestartSec=5
User=your-username
[Install]
WantedBy=multi-user.target
```
```bash
sudo systemctl enable --now wsjtx-relay
```
### Windows (Task Scheduler)
Create a batch file `start-relay.bat`:
```batch
@echo off
set OPENHAMCLOCK_URL=https://openhamclock.com
set RELAY_KEY=your-secret-key
node C:\path\to\relay.js
```
Add it to Task Scheduler to run at login.
## Troubleshooting
**Port already in use**: Another program is listening on 2237. Use `--port 2238` and update WSJT-X to match.
**Authentication failed**: Double-check that `WSJTX_RELAY_KEY` in your server .env matches the `--key` you're passing to the relay.
**Connection errors**: The relay automatically retries with backoff. Check that your server URL is correct and accessible.
**No decodes showing**: Make sure WSJT-X is set to UDP address `127.0.0.1` port `2237`, and that the "Accept UDP requests" checkbox is enabled.

@ -0,0 +1,14 @@
{
"name": "openhamclock-wsjtx-relay",
"version": "1.0.0",
"description": "Relay WSJT-X UDP decodes to a remote OpenHamClock server",
"main": "relay.js",
"scripts": {
"start": "node relay.js"
},
"keywords": ["wsjt-x", "ham-radio", "ft8", "relay", "openhamclock"],
"license": "MIT",
"engines": {
"node": ">=14.0.0"
}
}

@ -0,0 +1,474 @@
#!/usr/bin/env node
/**
* OpenHamClock WSJT-X Relay Agent
*
* Captures WSJT-X UDP datagrams on your local machine and relays
* decoded messages to a remote OpenHamClock instance (e.g. openhamclock.com).
*
* WSJT-X sends UDP only on the local network this bridge lets your
* cloud-hosted dashboard see your decodes in real time.
*
* Zero dependencies uses only Node.js built-in modules.
*
* Usage:
* node relay.js --url https://openhamclock.com --key YOUR_RELAY_KEY
*
* Or with environment variables:
* OPENHAMCLOCK_URL=https://openhamclock.com RELAY_KEY=abc123 node relay.js
*
* In WSJT-X: Settings Reporting UDP Server
* Address: 127.0.0.1 Port: 2237
*/
const dgram = require('dgram');
const http = require('http');
const https = require('https');
const { URL } = require('url');
// ============================================
// CONFIGURATION
// ============================================
function parseArgs() {
const args = process.argv.slice(2);
const config = {
url: process.env.OPENHAMCLOCK_URL || '',
key: process.env.RELAY_KEY || process.env.OPENHAMCLOCK_RELAY_KEY || '',
port: parseInt(process.env.WSJTX_UDP_PORT || '2237'),
batchInterval: parseInt(process.env.BATCH_INTERVAL || '2000'),
verbose: process.env.VERBOSE === 'true',
};
for (let i = 0; i < args.length; i++) {
switch (args[i]) {
case '--url': case '-u': config.url = args[++i]; break;
case '--key': case '-k': config.key = args[++i]; break;
case '--port': case '-p': config.port = parseInt(args[++i]); break;
case '--interval': case '-i': config.batchInterval = parseInt(args[++i]); break;
case '--verbose': case '-v': config.verbose = true; break;
case '--help': case '-h':
console.log(`
OpenHamClock WSJT-X Relay Agent
Captures WSJT-X UDP on your local machine and forwards decodes to
a remote OpenHamClock server.
Options:
--url, -u <url> OpenHamClock server URL (required)
--key, -k <key> Relay authentication key (required)
--port, -p <port> Local UDP port to listen on (default: 2237)
--interval, -i <ms> Batch send interval in ms (default: 2000)
--verbose, -v Show all decoded messages
--help, -h Show this help
Environment variables:
OPENHAMCLOCK_URL Same as --url
RELAY_KEY Same as --key
WSJTX_UDP_PORT Same as --port
BATCH_INTERVAL Same as --interval
VERBOSE Set to 'true' for verbose output
Example:
node relay.js --url https://openhamclock.com --key mySecretKey123
`);
process.exit(0);
}
}
return config;
}
const config = parseArgs();
// Validate
if (!config.url) {
console.error('❌ Error: --url is required (e.g. --url https://openhamclock.com)');
console.error(' Run with --help for usage info');
process.exit(1);
}
if (!config.key) {
console.error('❌ Error: --key is required (set WSJTX_RELAY_KEY in your server .env)');
console.error(' Run with --help for usage info');
process.exit(1);
}
// Normalize URL
const serverUrl = config.url.replace(/\/$/, '');
const relayEndpoint = `${serverUrl}/api/wsjtx/relay`;
// ============================================
// WSJT-X BINARY PROTOCOL PARSER
// ============================================
const WSJTX_MAGIC = 0xADBCCBDA;
const WSJTX_MSG = {
HEARTBEAT: 0, STATUS: 1, DECODE: 2, CLEAR: 3,
REPLY: 4, QSO_LOGGED: 5, CLOSE: 6, REPLAY: 7,
HALT_TX: 8, FREE_TEXT: 9, WSPR_DECODE: 10,
LOCATION: 11, LOGGED_ADIF: 12,
};
class WSJTXReader {
constructor(buffer) { this.buf = buffer; this.offset = 0; }
remaining() { return this.buf.length - this.offset; }
readUInt8() {
if (this.remaining() < 1) return null;
return this.buf.readUInt8(this.offset++);
}
readInt32() {
if (this.remaining() < 4) return null;
const v = this.buf.readInt32BE(this.offset); this.offset += 4; return v;
}
readUInt32() {
if (this.remaining() < 4) return null;
const v = this.buf.readUInt32BE(this.offset); this.offset += 4; return v;
}
readUInt64() {
if (this.remaining() < 8) return null;
const hi = this.buf.readUInt32BE(this.offset);
const lo = this.buf.readUInt32BE(this.offset + 4);
this.offset += 8;
return hi * 0x100000000 + lo;
}
readBool() { const v = this.readUInt8(); return v === null ? null : v !== 0; }
readDouble() {
if (this.remaining() < 8) return null;
const v = this.buf.readDoubleBE(this.offset); this.offset += 8; return v;
}
readUtf8() {
const len = this.readUInt32();
if (len === null || len === 0xFFFFFFFF) return null;
if (len === 0) return '';
if (this.remaining() < len) return null;
const str = this.buf.toString('utf8', this.offset, this.offset + len);
this.offset += len; return str;
}
readQTime() {
const ms = this.readUInt32();
if (ms === null) return null;
const h = Math.floor(ms / 3600000);
const m = Math.floor((ms % 3600000) / 60000);
const s = Math.floor((ms % 60000) / 1000);
return { ms, hours: h, minutes: m, seconds: s,
formatted: `${String(h).padStart(2,'0')}:${String(m).padStart(2,'0')}:${String(s).padStart(2,'0')}` };
}
readQDateTime() {
const julianDay = this.readUInt64();
const time = this.readQTime();
const timeSpec = this.readUInt8();
if (timeSpec === 2) this.readInt32();
return { julianDay, time, timeSpec };
}
}
function parseWSJTXMessage(buffer) {
const reader = new WSJTXReader(buffer);
const magic = reader.readUInt32();
if (magic !== WSJTX_MAGIC) return null;
const schema = reader.readUInt32();
const type = reader.readUInt32();
const id = reader.readUtf8();
if (type === null || id === null) return null;
const msg = { type, id, schema, timestamp: Date.now() };
try {
switch (type) {
case WSJTX_MSG.HEARTBEAT:
msg.maxSchema = reader.readUInt32();
msg.version = reader.readUtf8();
msg.revision = reader.readUtf8();
break;
case WSJTX_MSG.STATUS:
msg.dialFrequency = reader.readUInt64();
msg.mode = reader.readUtf8();
msg.dxCall = reader.readUtf8();
msg.report = reader.readUtf8();
msg.txMode = reader.readUtf8();
msg.txEnabled = reader.readBool();
msg.transmitting = reader.readBool();
msg.decoding = reader.readBool();
msg.rxDF = reader.readUInt32();
msg.txDF = reader.readUInt32();
msg.deCall = reader.readUtf8();
msg.deGrid = reader.readUtf8();
msg.dxGrid = reader.readUtf8();
msg.txWatchdog = reader.readBool();
msg.subMode = reader.readUtf8();
msg.fastMode = reader.readBool();
msg.specialOp = reader.readUInt8();
msg.freqTolerance = reader.readUInt32();
msg.trPeriod = reader.readUInt32();
msg.configName = reader.readUtf8();
msg.txMessage = reader.readUtf8();
break;
case WSJTX_MSG.DECODE:
msg.isNew = reader.readBool();
msg.time = reader.readQTime();
msg.snr = reader.readInt32();
msg.deltaTime = reader.readDouble();
msg.deltaFreq = reader.readUInt32();
msg.mode = reader.readUtf8();
msg.message = reader.readUtf8();
msg.lowConfidence = reader.readBool();
msg.offAir = reader.readBool();
break;
case WSJTX_MSG.CLEAR:
msg.window = reader.readUInt8();
break;
case WSJTX_MSG.QSO_LOGGED:
msg.dateTimeOff = reader.readQDateTime();
msg.dxCall = reader.readUtf8();
msg.dxGrid = reader.readUtf8();
msg.txFrequency = reader.readUInt64();
msg.mode = reader.readUtf8();
msg.reportSent = reader.readUtf8();
msg.reportRecv = reader.readUtf8();
msg.txPower = reader.readUtf8();
msg.comments = reader.readUtf8();
msg.name = reader.readUtf8();
msg.dateTimeOn = reader.readQDateTime();
msg.operatorCall = reader.readUtf8();
msg.myCall = reader.readUtf8();
msg.myGrid = reader.readUtf8();
msg.exchangeSent = reader.readUtf8();
msg.exchangeRecv = reader.readUtf8();
msg.adifPropMode = reader.readUtf8();
break;
case WSJTX_MSG.WSPR_DECODE:
msg.isNew = reader.readBool();
msg.time = reader.readQTime();
msg.snr = reader.readInt32();
msg.deltaTime = reader.readDouble();
msg.frequency = reader.readUInt64();
msg.drift = reader.readInt32();
msg.callsign = reader.readUtf8();
msg.grid = reader.readUtf8();
msg.power = reader.readInt32();
msg.offAir = reader.readBool();
break;
case WSJTX_MSG.LOGGED_ADIF:
msg.adif = reader.readUtf8();
break;
case WSJTX_MSG.CLOSE:
break;
default:
return null;
}
} catch (e) { return null; }
return msg;
}
// ============================================
// MESSAGE QUEUE & RELAY
// ============================================
let messageQueue = [];
let sendInFlight = false;
let consecutiveErrors = 0;
let totalSent = 0;
let totalDecodes = 0;
const MSG_TYPE_NAMES = {
0: 'Heartbeat', 1: 'Status', 2: 'Decode', 3: 'Clear',
5: 'QSO Logged', 6: 'Close', 10: 'WSPR',
};
function queueMessage(msg) {
messageQueue.push(msg);
if (config.verbose && msg.type === WSJTX_MSG.DECODE) {
const snr = msg.snr != null ? (msg.snr >= 0 ? `+${msg.snr}` : msg.snr) : '?';
console.log(` 📻 ${msg.time?.formatted || '??'} ${snr}dB ${msg.deltaFreq}Hz ${msg.message}`);
}
}
function sendBatch() {
if (sendInFlight || messageQueue.length === 0) return;
const batch = messageQueue.splice(0, messageQueue.length);
sendInFlight = true;
const body = JSON.stringify({ messages: batch });
const parsed = new URL(relayEndpoint);
const transport = parsed.protocol === 'https:' ? https : http;
const reqOpts = {
hostname: parsed.hostname,
port: parsed.port || (parsed.protocol === 'https:' ? 443 : 80),
path: parsed.pathname,
method: 'POST',
headers: {
'Content-Type': 'application/json',
'Content-Length': Buffer.byteLength(body),
'Authorization': `Bearer ${config.key}`,
'X-Relay-Version': '1.0.0',
},
timeout: 10000,
};
const req = transport.request(reqOpts, (res) => {
let data = '';
res.on('data', (chunk) => data += chunk);
res.on('end', () => {
sendInFlight = false;
if (res.statusCode === 200) {
consecutiveErrors = 0;
totalSent += batch.length;
const decodes = batch.filter(m => m.type === WSJTX_MSG.DECODE).length;
if (decodes > 0 || config.verbose) {
process.stdout.write(` ✅ Relayed ${batch.length} msg${batch.length > 1 ? 's' : ''} (${decodes} decode${decodes !== 1 ? 's' : ''}) — total: ${totalSent}\r`);
}
} else if (res.statusCode === 401 || res.statusCode === 403) {
console.error(`\n ❌ Authentication failed (${res.statusCode}) — check your relay key`);
console.error(` Server: ${serverUrl}`);
consecutiveErrors++;
} else {
console.error(`\n ⚠️ Server returned ${res.statusCode}: ${data.substring(0, 100)}`);
consecutiveErrors++;
// Re-queue on server error
if (res.statusCode >= 500) messageQueue.unshift(...batch);
}
});
});
req.on('error', (err) => {
sendInFlight = false;
consecutiveErrors++;
// Re-queue on network error
messageQueue.unshift(...batch);
if (consecutiveErrors <= 3 || consecutiveErrors % 10 === 0) {
console.error(`\n ⚠️ Connection error (attempt ${consecutiveErrors}): ${err.message}`);
}
});
req.on('timeout', () => {
req.destroy();
sendInFlight = false;
consecutiveErrors++;
messageQueue.unshift(...batch);
});
req.write(body);
req.end();
}
// Adaptive batch interval — back off on errors
function getInterval() {
if (consecutiveErrors === 0) return config.batchInterval;
if (consecutiveErrors < 5) return config.batchInterval * 2;
if (consecutiveErrors < 20) return 10000; // 10s
return 30000; // 30s max backoff
}
let batchTimer = null;
function scheduleBatch() {
if (batchTimer) clearTimeout(batchTimer);
batchTimer = setTimeout(() => {
sendBatch();
scheduleBatch();
}, getInterval());
}
// ============================================
// UDP LISTENER
// ============================================
const socket = dgram.createSocket('udp4');
socket.on('message', (buf, rinfo) => {
const msg = parseWSJTXMessage(buf);
if (!msg) return;
// Track decodes for local stats
if (msg.type === WSJTX_MSG.DECODE && msg.isNew) totalDecodes++;
// Queue for relay — skip REPLAY type (bulk replay request)
if (msg.type !== 7) { // REPLAY
queueMessage(msg);
}
});
socket.on('error', (err) => {
if (err.code === 'EADDRINUSE') {
console.error(`\n❌ Port ${config.port} is already in use.`);
console.error(' Is another WSJT-X listener running? (e.g. local OpenHamClock, JTAlert)');
console.error(' Try a different port: node relay.js --port 2238');
console.error(' Then update WSJT-X to match.');
} else {
console.error(`\n❌ UDP error: ${err.message}`);
}
process.exit(1);
});
socket.on('listening', () => {
const addr = socket.address();
console.log('');
console.log('╔══════════════════════════════════════════════╗');
console.log('║ OpenHamClock WSJT-X Relay Agent v1.0.0 ║');
console.log('╚══════════════════════════════════════════════╝');
console.log('');
console.log(` 🎧 Listening for WSJT-X on UDP ${addr.address}:${addr.port}`);
console.log(` 🌐 Relaying to ${serverUrl}`);
console.log(` ⏱️ Batch interval: ${config.batchInterval}ms`);
console.log('');
console.log(' Configure WSJT-X:');
console.log(` Settings → Reporting → UDP Server`);
console.log(` Address: 127.0.0.1 Port: ${config.port}`);
console.log(' ☑ Accept UDP requests (check this box)');
console.log('');
console.log(' Waiting for WSJT-X packets...');
console.log('');
// Start batch relay loop
scheduleBatch();
// Periodic health check — verify server is reachable
setInterval(() => {
const parsed = new URL(`${serverUrl}/api/wsjtx`);
const transport = parsed.protocol === 'https:' ? https : http;
const req = transport.get(parsed.href, { timeout: 5000 }, (res) => {
if (res.statusCode === 200 && consecutiveErrors > 0) {
console.log('\n ✅ Server connection restored');
consecutiveErrors = 0;
}
res.resume(); // consume response
});
req.on('error', () => {}); // silent
req.on('timeout', () => req.destroy());
}, 60000); // every minute
});
// Bind to all interfaces so WSJT-X can reach it from any address
socket.bind(config.port, '0.0.0.0');
// ============================================
// GRACEFUL SHUTDOWN
// ============================================
function shutdown(sig) {
console.log(`\n\n ${sig} received — sending final batch...`);
if (messageQueue.length > 0) {
sendBatch();
// Give it a moment to flush
setTimeout(() => {
console.log(` 📊 Session stats: ${totalDecodes} decodes, ${totalSent} messages relayed`);
console.log(' 73!');
process.exit(0);
}, 2000);
} else {
console.log(` 📊 Session stats: ${totalDecodes} decodes, ${totalSent} messages relayed`);
console.log(' 73!');
process.exit(0);
}
}
process.on('SIGINT', () => shutdown('SIGINT'));
process.on('SIGTERM', () => shutdown('SIGTERM'));
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