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implement 5 second auto-reconnect attempts #28

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implement 5 second auto-reconnect attempts #28

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66 changes: 46 additions & 20 deletions app/main.jsx
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Original file line number Diff line number Diff line change
Expand Up @@ -71,9 +71,6 @@ function timestampDisplay (timestamp) {
return minutes + ' minutes ago';
}

const scheme = window.location.protocol == "http:" ? "ws" : "wss"
const url = `${scheme}://${window.location.hostname}:${window.location.port}/ws`
const conn = new WebSocket(url);

class App extends React.Component {
constructor(props) {
Expand All @@ -85,21 +82,33 @@ class App extends React.Component {
connected: false,
lastUpdate: new Date(),
now: new Date(),
websocket: null,
}
this.handleRouteChange = this.handleRouteChange.bind(this)
}

componentWillMount() {
conn.onopen = () => {
console.log("Websocket Open")
this.setState({ connected: true })
}
conn.onclose = () => {
console.log("Closing websocket")
this.setState({ connected: false })
}
conn.onmessage = (evt) => {
console.log('onmessage');
this.connectWebSocket();
this.interval = setInterval(() => this.setState({ now: Date.now() }), 1000);
}

componentWillUnmount() {
this.closeWebSocket();
clearInterval(this.interval)
}

connectWebSocket = () => {
const scheme = window.location.protocol == "http:" ? "ws" : "wss"
const url = `${scheme}://${window.location.hostname}:${window.location.port}/ws`
const websocket = new WebSocket(url);

websocket.onopen = () => {
console.log('Websocket connected');
this.setState({ connected: true });
};

websocket.onmessage = (evt) => {
console.log('WebSocket message');
if (!this.state.connected) this.setState({ connected: true })
const vehicles = JSON.parse(evt.data)
const lastUpdate = new Date()
Expand All @@ -108,13 +117,30 @@ class App extends React.Component {
lastUpdate,
})
console.dir(vehicles)
}
this.interval = setInterval(() => this.setState({ now: Date.now() }), 1000);
}
};

componentWillUnmount() {
clearInterval(this.interval)
}
websocket.onclose = () => {
console.log('WebSocket closed');
this.setState({ connected: false });

setTimeout(this.connectWebSocket, 5000);
};

websocket.onerror = (error) => {
console.error('WebSocket error:', error);
this.setState({ connected: false });

setTimeout(this.connectWebSocket, 5000);
};

this.setState({ websocket });
};

closeWebSocket = () => {
if (this.state.websocket) {
this.state.websocket.close();
}
};

routeComponents() {
if (this.state.routes.length === 0) return Object.values(ROUTES)
Expand Down Expand Up @@ -163,7 +189,7 @@ class App extends React.Component {
notConnectedScreen() {
return <Row className="justify-content-md-center">
<Col md="auto">
<p>Looks like you aren't connected. Maybe try refreshing the page. If it's not working please <a href="https://github.com/codefornola/nola-transit-map/issues">get in touch with us</a>.</p>
<p>Connection broken. Attempting to reconnect...</p>
</Col>
</Row>
}
Expand Down