On Fri, 6 Aug 2021 19:50:48 GMT, Jonathan Dowland <jdowl...@openjdk.org> wrote:

>> The tests `test/jdk/java/net/HttpURLConnection/HttpURLConWithProxy.java` 
>> uses the IP address "1.1.1.1" as a value. I think at the time the address 
>> was picked, the assumption was the address was not valid / not routable. 
>> Since April 2018 the address is part of CloudFlare's "Free" DNS product: 
>> <https://en.wikipedia.org/wiki/1.1.1.1>. (this test was originally written 
>> in 2016, before the service was launched)
>> 
>> I've verified using local packet captures that running the test does result 
>> in IP traffic being sent to 1.1.1.1. (Several other tests in JDK use 1.1.1.1 
>> as a placeholder IP. I've checked them all and none of the others connect 
>> out to the IP like this one)
>>  
>> This PR substitutes that IP address value (and two others) for ones from a 
>> reserved IP range (240.0.0.0/4 according to RFC 6761) which will not result 
>> in runners of the test suit inadvertently sending IP packets to the 
>> CloudFlare service. 
>> 
>> This could be invalidated again if that address range is allocated at some 
>> point in the future. A more future-proof fix would be to bind to random 
>> ports on localhost for each dummy proxy (as done for the target HTTP server 
>> in the test already). I can do that if preferred.
>> 
>> <https://bugs.openjdk.java.net/browse/JDK-8270553>
>
> Jonathan Dowland has updated the pull request with a new target base due to a 
> merge or a rebase. The incremental webrev excludes the unrelated changes 
> brought in by the merge/rebase. The pull request contains one additional 
> commit since the last revision:
> 
>   8270553: Tests should not use (real, in-use, routable) 1.1.1.1 as dummy IP 
> value

Hi Jonathan, this should be ready to integrate so please enter /integrate in a 
new comment and then it can be sponsored.

-------------

PR: https://git.openjdk.java.net/jdk/pull/4806

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