Question

What is max number of TCP/IP sockets I can open on a droplet?

Hi, I need to run a proxy server for my IoT devices; I need 1 TCP/IP socket per device; What is max # of sockets I can open on a single droplet? My tests point at a number of about 2K?


Submit an answer
Answer a question...

This textbox defaults to using Markdown to format your answer.

You can type !ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link!

Sign In or Sign Up to Answer

These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.

alexdo
Site Moderator
Site Moderator badge
October 6, 2022

Hello @elkangler

2000 connections should be totally okay (if the droplet has the necessary resources to handle the traffic)

Another thing to mention is that you might need to edit the /etc/sysctl.conf file to allow that many TCP connections as this might be limited to a lower value by default.

Regards

Bobby Iliev
Site Moderator
Site Moderator badge
October 6, 2022

Hi there,

I think that 2000 TCP/IP sockets should be doable, you will be quite far from the standard port range limit, eg. from port 1024 to 49151.

  • Well Known Ports (0-1023) – reserved for the operating system and core services
  • Registered Ports (1024-49151) – which can be used by applications, specific services, and users
  • Dynamic Ports (49152-65535)

So as long as you have enough resources on the server for all of your 2k services it should be ok I believe.

Best,

Bobby

Want to learn more? Join the DigitalOcean Community!

Join our DigitalOcean community of over a million developers for free! Get help and share knowledge in Q&A, subscribe to topics of interest, and get courses and tools that will help you grow as a developer and scale your project or business.