[infinispan-dev] Hot Rod client sending data to itself - ISPN-8186

[Gustavo Fernandes]

On Fri, Aug 11, 2017 at 5:48 PM, Gustavo Fernandes <gustavo at infinispan.org>
wrote:

> On Fri, Aug 11, 2017 at 3:30 PM, Sanne Grinovero <sanne at infinispan.org>
> wrote:
>
>> On 11 August 2017 at 14:14, Galder Zamarreño <galder at redhat.com> wrote:
>> > Hi,
>> >
>> > Re: https://issues.jboss.org/browse/ISPN-8186
>> >
>> > I've been looking at TRACE logs and what seems to happen is that is
>> that sometimes, when the client needs to create a new Socket, it sends
>> using the same localport as the Hot Rod server port. As a result, when the
>> client sends something to the server, it also receives it, hence it ends
>> finding a request instead of a response. Analysis of the logs linked in the
>> JIRA can be found in [1].
>> >
>> > What I'm not sure about is how to fix this... There are ways to
>> potentially pass a specific localport to a Socket [2] but this could be a
>> bit messy: It'd require us to generate a random local port and see if that
>> works, making sure that's not the server port...
>> >
>> > However, I think the real problem we're having here is the fact that
>> both the server and client are bound to same IP address, 127.0.0.1. A
>> simpler solution could be a way to get the server to be in a different IP
>> address to the client, but what would that be that IP address and how to
>> make sure it always works? Bind the server to eth0?
>> >
>> > Any other ideas?
>>
>> You could create multiple aliases for the same loopback device, and
>> assign a different IP address to each of them.
>>
>
> No need for aliases, we could use directly use any IP from the range
> 127.0.0.0/8
> Just a reminder, the testsuite should be able to run on Linux/Win/MacOS so
> I'd stay
> away for OS specific extra steps
>


I tested on a recent Linux and Win, it works, but MacOS requires an alias
to be created...
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