Hi, That's the FreeBSD TCP blackhole: net.inet.tcp.blackhole=2
Unfortunately it also affects localhost, so every packed to an unbound port is dropped. I am not sure what the sense behind having a blackhole on localhost is security-wise, but this is how the FreeBSD machines are configured at Apache. For Lucene/Solr tests on our FreeBSD slave we use different approaches to test failed network connections: - Use invalid IPv6 addresses, they fail wonderfully - Use another invalid IP address except 127.0.0.1 or localhost > -----Original Message----- > From: Keith W [mailto:keith.w...@gmail.com] > Sent: Monday, February 27, 2012 11:42 PM > To: builds@apache.org > Subject: Re: FreeBSD Jenkins slave - no timely "connection refused" when > connecting to a port is not bound > > Hello builds > > Would anyone be able to take a look at this please? > > Many thanks, Keith. > > On 20 February 2012 09:55, Keith W <keith.w...@gmail.com> wrote: > > Hello builds > > > > I have a question about the FreeBSD Jenkins slave. > > > > Our (Qpid) test suite includes a end-to-end test that tests the > > behaviour of Qpid client when it tries connect to the Qpid server > > before it is started. Specifically, this means the client tries to > > form a TCP/IP connection to an unbound port on localhost. The test > > relies on a getting a timely "Connection Refused" type error from the > > underlying socket connect attempt. > > > > The test works without problems on the other Apache Jenkins slaves > > (ubuntu, solaris etc), but on FreeBSD it consistently fails. > > > > I can reproduce the problem outside Qpid by getting a Jenkins job to > > telnet to an unused port. The telnet command hangs for over a minute > > then produces: > > > > telnet localhost 45678 > > Operation timed out > > > > I would expect an immediate "Connection Refused" when trying to > > connect to a port which is not bound. > > > > Is this behaviour deliberate (part of a FreeBSD jail config?? > > perhaps), or a miss configuration of the FreeBSD instance? > > > > Thanks in advance, Keith Wall.
