update

test/test_js_to_js_text_sender.js

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+#!/usr/bin/env node
+// Test script for text transport testing
+// Tests sending 1 large and 1 small text from JavaScript serviceA to JavaScript serviceB
+// Uses NATSBridge.js smartsend with "text" type
+
+const { smartsend, uuid4, log_trace } = require('./src/NATSBridge');
+
+// Configuration
+const SUBJECT = "/NATSBridge_text_test";
+const NATS_URL = "nats.yiem.cc";
+const FILESERVER_URL = "http://192.168.88.104:8080";
+
+// Create correlation ID for tracing
+const correlation_id = uuid4();
+
+// Helper: Log with correlation ID
+function log_trace(message) {
+    const timestamp = new Date().toISOString();
+    console.log(`[${timestamp}] [Correlation: ${correlation_id}] ${message}`);
+}
+
+// File upload handler for plik server
+async function plik_upload_handler(fileserver_url, dataname, data, correlation_id) {
+    // Get upload ID
+    const url_getUploadID = `${fileserver_url}/upload`;
+    const headers = {
+        "Content-Type": "application/json"
+    };
+    const body = JSON.stringify({ OneShot: true });
+    
+    let response = await fetch(url_getUploadID, {
+        method: "POST",
+        headers: headers,
+        body: body
+    });
+    
+    if (!response.ok) {
+        throw new Error(`Failed to get upload ID: ${response.status} ${response.statusText}`);
+    }
+    
+    const responseJson = await response.json();
+    const uploadid = responseJson.id;
+    const uploadtoken = responseJson.uploadToken;
+    
+    // Upload file
+    const formData = new FormData();
+    const blob = new Blob([data], { type: "application/octet-stream" });
+    formData.append("file", blob, dataname);
+    
+    response = await fetch(`${fileserver_url}/file/${uploadid}`, {
+        method: "POST",
+        headers: {
+            "X-UploadToken": uploadtoken
+        },
+        body: formData
+    });
+    
+    if (!response.ok) {
+        throw new Error(`Failed to upload file: ${response.status} ${response.statusText}`);
+    }
+    
+    const fileResponseJson = await response.json();
+    const fileid = fileResponseJson.id;
+    
+    const url = `${fileserver_url}/file/${uploadid}/${fileid}/${encodeURIComponent(dataname)}`;
+    
+    return {
+        status: response.status,
+        uploadid: uploadid,
+        fileid: fileid,
+        url: url
+    };
+}
+
+// Sender: Send text via smartsend
+async function test_text_send() {
+    // Create a small text (will use direct transport)
+    const small_text = "Hello, this is a small text message. Testing direct transport via NATS.";
+    
+    // Create a large text (will use link transport if > 1MB)
+    // Generate a larger text (~2MB to ensure link transport)
+    const large_text_lines = [];
+    for (let i = 0; i < 50000; i++) {
+        large_text_lines.push(`Line ${i}: This is a sample text line with some content to pad the size. `);
+    }
+    const large_text = large_text_lines.join("");
+    
+    // Test data 1: small text
+    const data1 = { dataname: "small_text", data: small_text, type: "text" };
+    
+    // Test data 2: large text
+    const data2 = { dataname: "large_text", data: large_text, type: "text" };
+    
+    // Use smartsend with text type
+    // For small text: will use direct transport (Base64 encoded UTF-8)
+    // For large text: will use link transport (uploaded to fileserver)
+    const env = await smartsend(
+        SUBJECT,
+        [data1, data2],
+        {
+            natsUrl: NATS_URL,
+            fileserverUrl: FILESERVER_URL,
+            fileserverUploadHandler: plik_upload_handler,
+            sizeThreshold: 1_000_000,
+            correlationId: correlation_id,
+            msgPurpose: "chat",
+            senderName: "text_sender",
+            receiverName: "",
+            receiverId: "",
+            replyTo: "",
+            replyToMsgId: ""
+        }
+    );
+    
+    log_trace(`Sent message with ${env.payloads.length} payloads`);
+    
+    // Log transport type for each payload
+    for (let i = 0; i < env.payloads.length; i++) {
+        const payload = env.payloads[i];
+        log_trace(`Payload ${i + 1} ('${payload.dataname}'):`);
+        log_trace(`  Transport: ${payload.transport}`);
+        log_trace(`  Type: ${payload.type}`);
+        log_trace(`  Size: ${payload.size} bytes`);
+        log_trace(`  Encoding: ${payload.encoding}`);
+        
+        if (payload.transport === "link") {
+            log_trace(`  URL: ${payload.data}`);
+        }
+    }
+}
+
+// Run the test
+console.log("Starting text transport test...");
+console.log(`Correlation ID: ${correlation_id}`);
+
+// Run sender
+console.log("start smartsend for text");
+test_text_send();
+
+console.log("Test completed.");