Internet communication protocols

Projects Networking, Protocols, and Devices
1

Hello Experts,

It's Urgent...

I am an IoT developer & working on a commercial project.

I am using a Nodemcu board, I am willing to use a SIM modem (module) instead of a wifi router.

Here I want to send some sensor data to a mobile app over the internet.

My problem is that I want a communication protocol that works without any third server as I can in TCP/IP protocol. But In TCP the IP address is used for communication but the IP address is Dynamic and it changes & using a STATIC IP is a little expensive and complicated.

So I want a protocol in can work without any third server as I can do which my board (whdemcu) can directly communicate with the Mobile app or wiy other NODE. But without using an IP address. It will be good if that protocol supports any other unique identifier.

I know that there are many protocols and services (like MQTT, Blynk, ARDUINO CLOUD, RAINMAKER, etc.) but unfortunately, they are paid and not affordable.

In short, I want a communication protocol that can communicate without any external server.

Kindly answer my question and help me with my issue.

THANKS.

-SRJ

2

You could run your own local MQTT broker on something as humble as a Raspberry Pi

3

Thanks for your reply.

Sir but running my own server is a complicated task.
and as I mentioned in my question I am developing a commercial product so in the future my server will have a huge load of communication so, using a Raspberry is not an option. And giving a stable internet connection to the server is very hard.

I want my Nodemcu work as a server.

4

I suppose that you could look at this: https://ifttt.com/ . There is a free plan. I've never used it and have only seen it mentioned on this site in the context of a problem. However, it may suit you.
If the communication is only initiated from your SIM modem to the external message service, then the dynamic IP addresses should not be a problem.

5

Hello sir thanks for your reply,

But IFTTT charges in commercial use.

6

From my first reading, the issue is not whether your activities are commercial or not, simply whether you can accept the limitations of the free plan. Free commercial services will be difficult to find.

7

could you run a webserver on the ESP which presemts your sensor data?
the mobile app (web browser) connects to the webserver to view the data

8

free dns

~q

9

Are you going to be selling this "commercial project"? Can you past the cost of connectivity on to your customer?

You can use a free DynmicDNS service to map a domain name to your server IP even as the server IP changes. The mobile app would connect to your server using the domain name.

10

Thanks for your reply,

Yes sir I am going to sell it.

The option you told is great but, Sir the DDNS (Dynamic DNS) charge a lot & if I used free plan then I should have to confirm the domain every month.

11

Thanks for your reply,

Sir I can do it but, in webserver the IP address of the nodemcu is used for it which changes periodically.

12

Thank you

Sounds like you should be able to help us.

You should get professional help. Semiconductor companies and their distributors employ lots of professionals who would be more than happy to help you. Just call one of their sales people and tell them about your project (requirements, SOP, volume over live time) and they will send you some friendly engineer to point you in the right direction and help you finish on time.

13

And if the volunteers in this forum are unable to assist with your commercial project you could try posting a request in;

14

What is your time frame?

Please make sure that the decive meets all regulations required (e.g. EU RED, EMI, ...).

Also when considering free services:
They have servers they have to pay for. Please don't abuse them.

And now for the problem:
When using WIFI or a modem please don't expect these devices to get a public IP. The same goes for smart phones. Also you cannot expect your users to know what port forwarding is and how to configure it for your device.

As a result you need a server as an public anchor point where all the devices connect to. There they can negotiate how to directly communicate with each other.

  • When the devices are on the same network they can use a direct connection.
  • When one has an public IP also use a direct connection.
  • With no public IPs try UDP hole punching for direct connection.
  • When everything above fails, use a server to forward the data.

You can probably start with a small VPS and when the number of paying customers grow you can upgrade your servers.

15

Thanks for your reply,

I am a small developer, not an expert

OK, thanks for your help. Thanks for your support.

16

Thanks for your reply,

Yes, I really can't expect that...

Thanks for your support I will think about setting the Server.
And thanks for your proper guidance with the problem explanation.

17

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