I get an error when I try to send a http request where the hostname is an IP address.
So for example:
The IP address is that from another server. I am not able to use the hostname to reach that server.
In version 3.3.1 of Gatling I did not have issues with this. Now I get the error:
11:57:33.315 [ERROR] i.g.h.a.HttpRequestAction - ‘httpRequest-11’ failed to execute: DnsNameResolver missing from Session
Are you sure you’re not actually using Gatling 3.4.0 and are experiencing this bug: https://github.com/gatling/gatling/issues/3977?
I have a maven project in IntelliJ for Gatling 3.3.1. In the POM I changed the version for Gatling and tried my script.
This was apparently not enough (maybe something to do with gatling.conf ???) because that gave me the error.
I tried to create a fresh project with mvn archetype: generate, but I do not get a working project with that (a different issue).
I finally downloaded the sample project for gatling-maven-plugin (https://github.com/gatling/gatling-maven-plugin-demo).
With that project I don’t have the error. I hoped that migrating from 3.3 to 3.4 would be as simple as changing the version number in the POM, alas.
Thank you! Regards,
Well, that’s why we write migration guides: https://gatling.io/docs/current/migration_guides/
No idea what your actual issue was, though.
As usual, a reproducer would help.
I was able to pinpoint the issue.
By default I clean the session at the start of each iteration with flushCookieJar and flushHttpCache.
The flushHttpCache removes item gatling.http.cache.dns with value io.gatling.http.resolver.ShufflingNameResolver@…
This explains the error above.
How can I keep using flushHttpCache?