RFR: 8300172: java/net/httpclient/MappingResponseSubscriber.java failed with java.net.ConnectException

[Daniel Fuchs]

On Wed, 18 Jan 2023 07:13:10 GMT, Jaikiran Pai <jpai at openjdk.org> wrote:

>> The MappingResponseSubscriber test has been observed failing on windows in our CI due to a ConnectException.
>> I am suspecting that some kind of connection limit enforced by the system has been reached.
>> We can see from the log that the TCP connection has failed, been retried, and failed again.
>> Previous connections to the same server seem to have succeeded.
>> 
>> Modifying the test to wait after previous clients have been GC'ed before opening the next one could alleviate the situation.
>
> test/jdk/java/net/httpclient/MappingResponseSubscriber.java line 149:
> 
>> 147:                 System.gc();
>> 148:                 AssertionError error = TRACKER.check(tracker, 1500);
>> 149:                 if (error != null) throw error;
> 
> Hello Daniel, in theory, this could potentially lose the any original failure/exception that the test in the try block might have raised. Perhaps we could catch and throw the original exception and add this additional failure as a suppressed exception to it?

Good point! Let me fix that.

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PR: https://git.openjdk.org/jdk/pull/12013