I have created a GKE cluster and deployed two node.js basic apps in it named nodeservice1 and nodeservice2 where only nodeservice1 is open to world (Allow unauthenticated calls=true) .

My nodeservice1 is internally calling nodeservice2 via restcall and returning what nodeservice2 returns.

I am able to call nodeservice1 via curl command, it works fine. When I hit endpoint ../restcall (Which actually calls nodeservice2 internally), it doesn't return anything but HTTPS 200 OK.

Note: Both of the apps are on 'cloud run'. Above setup

Any help? TIA

I have tried hitting following URLs from nodeservice1. Tried curl command too: curl -v -H "Host: nodeservice1.istio-system.example.com" 34.80.18.249/restcall where 34.80.18.249 is my istio ingress load balancer IP.

1. http://nodeservice2.istio-system:8080/restcall
2. http://nodeservice2:8080/restcall

/restcall calls internally nodeservice2

When I check running services, my nodeservice1 and nodeservice2 have type=ExternalName. But I have exposed nodeservice1=Loadbalancer and Nodeservice2=ClusterIP. Is something I am missing?

Nodeservice1's server.js file:

var express = require("express");
var http = require('http');
var app = express();
app.get('/',function(req, res, next){
res.send('Hurrah !!! nodeservice1 is up and running !!!');
});

app.get('/restcall',function(req, res, next){
var data = '';
    console.log('inside /restcall in nodeservice1');
    http.get('http://nodeservice1.default.example.com:8080/restcall',(resp) =>{
        console.log('inside response');
        resp.on('data', function (chunk) {
              data += chunk;
              console.log('inside end restcall');
            });
        resp.on('end', () => {
            res.send(data);
            console.log('inside end restcall');
            console.log(data);
        })
    })

    })

app.listen('8080',function(){
    console.log('Node service 2 server listening on port 8080');
});

Nodeservice2's server.js

var express = require("express");
var http = require('http');

var app = express();

app.get('/',function(req, res){
res.send('Hurrah !!! nodeservice2 is up and running !!!');
});

app.get('/restcall',function(req, res, next){
console.log('inside /restcall in nodeservice2');
res.send('restcall api successfull from nodeservice2 !!!');
});

app.listen('8080',function(){
    console.log('Node service 2 server listening on port 8080');
});