Add nodejs example for client stream

examples/nodejs/client_stream.js

@@ -0,0 +1,40 @@
+const grpc = require("@grpc/grpc-js");
+const protoLoader = require("@grpc/proto-loader");
+const PROTO_PATH = "../../proto/inx.proto";
+
+
+const INX_ADDRESS = "localhost:9029";
+
+
+const protoOptions = {
+    keepCase: true,
+    longs: String,
+    enums: String,
+    defaults: true,
+    oneofs: true,
+};
+
+
+// Load the `inx.proto` file
+const packageDefinition = protoLoader.loadSync(PROTO_PATH, protoOptions);
+const INX = grpc.loadPackageDefinition(packageDefinition).inx.INX;
+// Instantiate an INX client
+const client = new INX(
+    INX_ADDRESS,
+    grpc.credentials.createInsecure()
+);
+
+// Listen to the stream of latest milestones
+var call = client.ListenToLatestMilestones();
+call.on('data', function (answer) {
+    console.log(answer);
+});
+call.on('end', function () {
+    // The server has finished sending
+});
+call.on('error', function (error) {
+    // An error has occurred and the stream has been closed.
+});
+call.on('status', function (status) {
+    // process status
+});