Node js client for grpc server - node.js

Question

I have GRPC server running using openssl - static way and I am trying to connect to server using nodejs client
I do not see any error but I do not see its connecting to server either.
Please share if you have any sample.
Please refer code below:
var rootCertPath = path.join('.','.', 'server-root.PEM');
var privateCertPath = path.join('.','.', 'server-private.PEM');
var domainCertPath = path.join('.','.', 'server-domain.PEM');
var rootCert = fs.readFileSync(rootCertPath);
var privateCert = fs.readFileSync(privateCertPath);
var domainCert = fs.readFileSync(domainCertPath);
var buf1 = new Buffer('rootCert');
var buf2 = new Buffer('privateCert');
var buf3 = new Buffer('domainCert');
var chat_proto = grpc.load("Chat.proto").com.company.grpc;
var client = new chat_proto.ChatService('https://servervip:443',grpc.credentials.createSsl(buf1,buf2,buf3));
Chat.proto
syntax = "proto3";
// Service definition.
service ChatService {
// Sends a chat
rpc chat(stream ChatMessage) returns (stream ChatMessageFromServer) {}
}
// The request message containing the user's name.
message ChatMessage {
string name = 1;
string message = 2;
}
// The response message containing the greetings
message ChatMessageFromServer {
string name = 1;
string message = 2;
}
//Code to make a request
var username = process.argv[2];
var stdin = process.openStdin();
function main() {
console.log("starting");
console.log(client); // prints { '$channel': Channel {} }
var chat=client.chat();
chat.on('data', function(msg) {
console.log(msg.name + ': ' + msg.message);
console.log("after message");
});
stdin.addListener('data',function(input) {
chat.write({ name: username, message: input.toString().trim()
});
});
}
main();

Answer 1

so good new is - below thing worked for me
var rootCertPath = path.join('.','.', 'roots.PEM');
var rootCert = fs.readFileSync(rootCertPath);
var chat_proto = grpc.load("Chat.proto").com.americanexpress.grpc.chat;
var client = new chat_proto.ChatService('servervip:443',grpc.credentials.createSsl(rootCert));
Looks like an issue with the cert - I used the default roots.PEM in grpc client and it worked for me. will look internally to have correct root of my servervip CA certificate chain.
Thanks all for your support