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Fixing ab (ApacheBench) Error "apr_socket_connect(): Invalid argument (22)"

Note to self: when running ApacheBench it does not know how to resolve localhost. Instead you’ll have to use 127.0.0.1. I seem to forget this every single time I use it 🤦‍♂️

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Won’t work: localhost

$ ab -n 5000 -c 50 http://localhost:8080/

This is ApacheBench, Version 2.3 <$Revision: 1843412 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/

Benchmarking localhost (be patient)

Test aborted after 10 failures

apr_socket_connect(): Invalid argument (22)

Will work: 127.0.0.1

$ ab -n 5000 -c 50 http://127.0.0.1:8080/
This is ApacheBench, Version 2.3 <$Revision: 1843412 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/

Benchmarking 127.0.0.1 (be patient)
Completed 1000 requests
Completed 2000 requests
Completed 3000 requests
Completed 4000 requests
Completed 5000 requests
Finished 5000 requests

…

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About the Author

Bramus is a Freelance Web Developer from Belgium. From the moment he discovered view-source at the age of 14 (way back in 1997), he fell in love with the web and has been tinkering with it ever since (more …)

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