akka/akka-core

Dns resolution throws UnknownHostException with only the hostname as message

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#23,543 opened on Aug 17, 2017

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 (1 comment) (0 reactions) (0 assignees)Scala (3,547 forks)batch import
1 - triagedhelp wantedt:coret:dnst:io

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Description

It should provide more info for the case where the exception name is not printed along with the message as reported in https://github.com/akka/akka-http/issues/1364. Right now error messages from Akka IO / Akka Stream read like this:

akka.stream.StreamTcpException: Tcp command [Connect(potato:80,None,List(),Some(10 seconds),true)] failed because of potato

https://github.com/akka/akka/blob/c2ff4f74fcc6de90cafdc1a8b21d2fe914c8d917/akka-actor/src/main/scala/akka/io/Dns.scala#L31-L35

Contributor guide

Research direction
Inspect the Dns.scala file at lines 31-35 and improve the error message to include the exception class name or additional context.
Tech stack
scala
Domain
backend
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
ScalaGit
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
80