Initial commit: ShadowBroker v0.1

Former-commit-id: 8ed321f2ba

backend/ais_proxy.js

@@ -0,0 +1,52 @@
+const WebSocket = require('ws');
+
+const args = process.argv.slice(2);
+const API_KEY = args[0] || '75cc39af03c9cc23c90e8a7b3c3bc2b2a507c5fb';
+
+const FILTER = [
+    // US Aircraft Carriers and major naval groups
+    { "MMSI": 338000000 }, { "MMSI": 338100000 }, // US Navy general prefixes
+    // Plus let's grab some global shipping for density
+    { "BoundingBoxes": [[[-90, -180], [90, 180]]] }
+];
+
+function connect() {
+    const ws = new WebSocket('wss://stream.aisstream.io/v0/stream');
+
+    ws.on('open', () => {
+        const subMsg = {
+            APIKey: API_KEY,
+            BoundingBoxes: [
+                [[-90, -180], [90, 180]]
+            ],
+            FilterMessageTypes: [
+                "PositionReport",
+                "ShipStaticData",
+                "StandardClassBPositionReport"
+            ]
+        };
+        ws.send(JSON.stringify(subMsg));
+    });
+
+    ws.on('message', (data) => {
+        // Output raw AIS message JSON to stdout so Python can consume it
+        // We ensure exactly one JSON object per line.
+        try {
+            const parsed = JSON.parse(data);
+            console.log(JSON.stringify(parsed));
+        } catch (e) {
+            // ignore non-json
+        }
+    });
+
+    ws.on('error', (err) => {
+        console.error("WebSocket Proxy Error:", err.message);
+    });
+
+    ws.on('close', () => {
+        console.error("WebSocket Proxy Closed. Reconnecting in 5s...");
+        setTimeout(connect, 5000);
+    });
+}
+
+connect();