update

test/test_js_to_js_file_receiver.js

@@ -0,0 +1,70 @@
+#!/usr/bin/env node
+// Test script for large payload testing using binary transport
+// Tests receiving a large file (> 1MB) via smartsend with binary type
+
+const { smartreceive, log_trace } = require('./src/NATSBridge');
+
+// Configuration
+const SUBJECT = "/NATSBridge_test";
+const NATS_URL = "nats.yiem.cc";
+
+// Helper: Log with correlation ID
+function log_trace(message) {
+    const timestamp = new Date().toISOString();
+    console.log(`[${timestamp}] ${message}`);
+}
+
+// Receiver: Listen for messages and verify large payload handling
+async function test_large_binary_receive() {
+    // Connect to NATS
+    const { connect } = require('nats');
+    const nc = await connect({ servers: [NATS_URL] });
+    
+    // Subscribe to the subject
+    const sub = nc.subscribe(SUBJECT);
+    
+    for await (const msg of sub) {
+        log_trace(`Received message on ${msg.subject}`);
+        
+        // Use NATSBridge.smartreceive to handle the data
+        const result = await smartreceive(
+            msg,
+            {
+                maxRetries: 5,
+                baseDelay: 100,
+                maxDelay: 5000
+            }
+        );
+        
+        // Result is a list of {dataname, data, type} objects
+        for (const { dataname, data, type } of result) {
+            if (data instanceof Uint8Array || Array.isArray(data)) {
+                const file_size = data.length;
+                log_trace(`Received ${file_size} bytes of binary data for '${dataname}' of type ${type}`);
+                
+                // Save received data to a test file
+                const fs = require('fs');
+                const output_path = `./new_${dataname}`;
+                fs.writeFileSync(output_path, Buffer.from(data));
+                log_trace(`Saved received data to ${output_path}`);
+            } else {
+                log_trace(`Received unexpected data type for '${dataname}': ${typeof data}`);
+            }
+        }
+    }
+    
+    // Keep listening for 10 seconds
+    setTimeout(() => {
+        nc.close();
+        process.exit(0);
+    }, 120000);
+}
+
+// Run the test
+console.log("Starting large binary payload test...");
+
+// Run receiver
+console.log("testing smartreceive");
+test_large_binary_receive();
+
+console.log("Test completed.");