[users at bb.net] FW: Issue connecting slave to master

[Colin Chargy]

Hi everyone,
Before I start describing my issue, let me say to we have dozen of slaves (Win, Mac and Linux platform perfectly working right now), only one is problematic :
We are facing an issue with slave connection to master. Here is the log on the slave side (see enclosed twisted.log for complete log) :
[Broker,client] message from master: attached [Broker,client] ReconnectingPBClientFactory.failedToGetPerspective
[Broker,client] we lost the brand-new connection [Broker,client] Lost connection to 192.168.0.1:9989 [Broker,client] <twisted.internet.tcp.Connector instance at 0x03471918> will retry in 3 seconds

And it starts it again.
On the server side, the following log is produced :
2017-06-19 16:11:27+0200 [Broker,9423,192.168.0.254] slave 'lrttestauto-test' attaching from IPv4Address(TCP, '192.168.0.254', 35524)
2017-06-19 16:11:27+0200 [Broker,9423,192.168.0.254] Starting buildslave keepalive timer for 'lrttestauto-test'
2017-06-19 16:11:27+0200 [Broker,9423,192.168.0.254] Peer will receive following PB traceback:
2017-06-19 16:11:27+0200 [Broker,9423,192.168.0.254] Unhandled Error
        Traceback (most recent call last):
        Failure: twisted.spread.pb.PBConnectionLost: [Failure instance: Traceback (failure with no frames): <class 'twisted.internet.error.ConnectionLost'>: Connection to the other side was lost in a non-clean fashion.
        ]

I've checked that the login and password are correct and Buildbot version are the following :
On the server-side (which is a Debian):
Buildbot version: 0.8.8
Twisted version: 12.3.0

On the slave side (which is a Windows 10, buildslave installed via pip):
Buildslave version: 0.8.14
Twisted version: 17.5.0

I've enclosed the slave log, the slave tac file and a tcpdump showing data transfer between slave and server (I've tried to debug it with Wireshark with no luck).

What can I do to debug or to solve this issue ?

Best regards,
Colin Chargy
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