Skip to content

jeffallen/mqtt

master
Switch branches/tags
Code

Latest commit

 

Git stats

Files

Permalink
Failed to load latest commit information.
Type
Name
Latest commit message
Commit time
 
 
 
 
 
 
 
 
pub
 
 
 
 
sub
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

mqtt

MQTT Clients, Servers and Load Testers in Go

For docs, see: http://godoc.org/github.com/jeffallen/mqtt

For a little discussion of this code see: http://blog.nella.org/mqtt-code-golf

Limitations

At this time, the following limitations apply:

  • QoS level 0 only; messages are only stored in RAM
  • Retain works, but at QoS level 0. Retained messages are lost on server restart.
  • Last will messages are not implemented.
  • Keepalive and timeouts are not implemented.

Servers

The example MQTT servers are in directories mqttsrv and smqttsrv (secured with TLS).

Benchmarking Tools

To use the benchmarking tools, cd into pingtest, loadtest, or many and type "go build". The tools have reasonable defaults, but you'll also want to use the -help flag to find out what can be tuned.

All benchmarks suck, and these three suck in different ways.

pingtest simulates a number of pairs of clients who are bouncing messages between them as fast as possible. It aims to measure latency of messages through the system when under load.

loadtest simulates a number of pairs of clients where one is sending as fast as possible to the other. Realistically, this ends up testing the ability of the system to decode and queue messages, because any slight inbalance in scheduling of readers causes a pile up of messages from the writer slamming them down the throat of the server.

many simulates a large number of clients who send a low transaction rate. The goal is to eventually use this to achieve 1 million (and more?) concurrent, active MQTT sessions in one server. So far, mqttsrv has survived a load of 40k concurrent connections from many.

Travis Build

build status

About

MQTT Clients and Servers in Go

Resources

License

Stars

Watchers

Forks

Releases

No releases published

Packages

No packages published

Contributors 4

  •  
  •  
  •  
  •  

Languages