Esri Leaflet

Add a Stream Service

This demo displays a real-time data feed from a service published using the GeoEvent extension for ArcGIS Server using a WebSocket. In addition to Esri Leaflet, it relies on Esri Leaflet Stream.

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8" />
  <title>Add a Stream Service</title>
  <meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no" />

  <!-- Load Leaflet from CDN -->
  <link rel="stylesheet" href="https://unpkg.com/leaflet@1.7.1/dist/leaflet.css"
    integrity="sha512-xodZBNTC5n17Xt2atTPuE1HxjVMSvLVW9ocqUKLsCC5CXdbqCmblAshOMAS6/keqq/sMZMZ19scR4PsZChSR7A=="
    crossorigin=""/>
  <script src="https://unpkg.com/leaflet@1.7.1/dist/leaflet.js"
    integrity="sha512-XQoYMqMTK8LvdxXYG3nZ448hOEQiglfqkJs1NOQV44cWnUrBc8PkAOcXy20w0vlaXaVUearIOBhiXZ5V3ynxwA=="
    crossorigin=""></script>

  <!-- Load Esri Leaflet from CDN -->
  <script src="https://unpkg.com/esri-leaflet@3.0.3/dist/esri-leaflet.js"
    integrity="sha512-kuYkbOFCV/SsxrpmaCRMEFmqU08n6vc+TfAVlIKjR1BPVgt75pmtU9nbQll+4M9PN2tmZSAgD1kGUCKL88CscA=="
    crossorigin=""></script>

  <!-- Load Esri Leaflet Vector from CDN -->
  <script src="https://unpkg.com/esri-leaflet-vector@3.1.0/dist/esri-leaflet-vector.js"
    integrity="sha512-AAcPGWoYOQ7VoaC13L/rv6GwvzEzyknHQlrtdJSGD6cSzuKXDYILZqUhugbJFZhM+bEXH2Ah7mA1OxPFElQmNQ=="
    crossorigin=""></script>

  <style>
    body { margin:0; padding:0; }
    #map { position: absolute; top:0; bottom:0; right:0; left:0; }
  </style>
</head>
<body>

<script src="https://unpkg.com/esri-leaflet-stream@1.0.0/dist/esri-leaflet-stream.min.js"></script>

<div id="map"></div>

<script type='text/javascript'>
  var map = L.map('map').setView([33.982735, -118.333152], 12);

  L.esri.Vector.vectorBasemapLayer('OSM:DarkGray:Base', {
    apikey: apiKey // Replace with your API key - https://developers.arcgis.com
  }).addTo(map);

  function createRandomFill () {
    return '#' + (Math.random() * 0xFFFFFF << 0).toString(16);
  }

  L.esri.streamFeatureLayer({
    url: 'https://geoeventsample1.esri.com:6443/arcgis/rest/services/LABus/StreamServer',
    pointToLayer: function (geojson, latlng) {
      return L.circleMarker(latlng, {
        fillColor: createRandomFill(),
        fillOpacity: 0.8,
        color: '#cccccc',
        weight: 2
      });
    }
  }).addTo(map);
</script>

</body>
</html>