On Ubuntu server 16.04.6, I am using Curl (v. 7.47.0) to test my web-server and network components.

Using the -: option (also known as --next), I keep the TCP connection open, and send multiple HTTP requests to my server, for example:

 curl -s -o /dev/null -: -s -d "data" -: 

Now, assuming I would like to send exactly the same HTTP request 3 times, I would use:

curl -o /dev/null -: -o /dev/null -: -o /dev/null 

My question is: is there a way to repeat this HTTP request to the same uri with same options "n" amount of times without adding -: -o /dev/null over and over again?

For example, sending 100 of the same HTTP requests using the same TCP connection without writing -: -o /dev/null 99 times?

1 Answer

You can use xargs for this purpose like this:

for i in {1..100} ; do echo ' -o /dev/null -:'
done | xargs curl -s

Please, note that xargs will not produce a command larger than 2,088,616 characters in my system. You can determine this maximum length in your system by running xargs --show-limits in your system.

3

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