Connection Error on setting up Raspberry Pi 3 on port 8441

Jomarico94 · January 30, 2019, 6:34am

Hi there I am currently having trouble setting up my Raspberry Pi to interface with the Blynk app on my phone I am currently Following the Guide as set up in the site using NodeJS. http://help.blynk.cc/how-to-connect-different-hardware-with-blynk/raspberry-pi/how-to-install-nodejs-library-on-linux. I am currently on this step of the guide.
Run default Blynk client (replace YourAuthToken )
export PATH=$PATH:/opt/nodejs/bin/
unset NODE_PATH
blynk-client YourAuthToken
However when running the blynk client on my pi. I get a connection error saying that it can’t connect to port 8441. I have read here in the forums that the port has changed to 9443 and 443 on the cloud.

Can I have a step by step guide on how to connect to the new port? I have very little programming knowledge and would really appreciate the help.

Gunner · January 30, 2019, 7:35am

How about an example…

It was something I made after reading the examples in the NodeJS library… just with the newer ports:
8080 for TCP & 9443 for SSL

github.com

vshymanskyy/blynk-library-js/blob/master/examples/nodejs/client-tcp-local.js

#!/usr/bin/env node

var Blynk = require('blynk-library');

var AUTH = 'YOUR_AUTH_TOKEN';

var blynk = new Blynk.Blynk(AUTH, options = {
  connector : new Blynk.TcpClient( options = { addr:"127.0.0.1", port:8442 } )
});

var v1 = new blynk.VirtualPin(1);
var v9 = new blynk.VirtualPin(9);

v1.on('write', function(param) {
  console.log('V1:', param);
});

v9.on('read', function() {
  v9.write(new Date().getSeconds());
});

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github.com

vshymanskyy/blynk-library-js/blob/master/examples/nodejs/client-ssl-local.js

#!/usr/bin/env node

var Blynk = require('blynk-library');

var AUTH = 'YOUR_AUTH_TOKEN';

var blynk = new Blynk.Blynk(AUTH,
  options= { addr:"127.0.0.1", port:9443 }
);

var v1 = new blynk.VirtualPin(1);
var v9 = new blynk.VirtualPin(9);

v1.on('write', function(param) {
  console.log('V1:', param);
});

v9.on('read', function() {
  v9.write(new Date().getSeconds());
});

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lvennard · January 30, 2019, 7:39am

to get your blynk-client to work, run this command.

sed -i ‘135s/8441/9443/’ /usr/local/lib/node_modules/blynk-library/blynk-node.js

then retry your blynk-client command.

s.d.engineering · January 17, 2020, 6:19pm

@vshymanskyy doesn’t work with 8442 it connect with 8080 port

Gunner · January 17, 2020, 8:43pm

1 year old reference to 4 year old code posting

Ahh, how I miss the forum… not

distans · January 18, 2020, 1:02am

But the forum misses you!

Gunner · January 18, 2020, 5:03am

Thanks @distans … boredom had played a part in driving me back, but I don’t think I can maintain interest (AKA patience ) for long… we will see.