linux peer incorrectly offline

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a resilio sync peer that used to work.  now it no longer does.  it has a correct key.  but the peers think it is offline now (they know it exists.)

this is a linux machine.  I have had sync failures in the past because of permissions, but because of the offline message, I do not think this is the case.  

looking at the rslsync , the last messages look like this:

[20170518 19:31:48.889] Relay: Connection to the relay[] has been lost with error: 104 (Connection reset by peer)
[20170518 19:31:48.914] D! 10SyncTcpReq[0x00007f26344b90a0]: EOF - error: 103 (Connection to the relay server has been lost)
[20170518 19:31:48.915] PD[A568] [E94F] (t:0 a:2): failed to open tunnel[0x00007f26344b90a0] to [::]:0/RELAY - error: 103 (Connection to the relay server has been lost), enc: SRP, tunnels: 0

now, the linux machine also sits together behind a firewall with one of the peers, and this peer is free from the firewall.

I am beginning to be embarrassed about sending megabyte long log files to the poor people at support...  is there a step-by-step guide to troubleshooting on linux ?   sort of like "first ping here, then telnet there, you should get this response, to check that your write permissions to the destination work, do this" etc.




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...but now I have a connection again, though from another peer.  this is very confusing.  the network was up all the time, so this was not it.

A troubleshooting procedure would be a great help.


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there is no 'telnet that and ping that" guide, there is a list of things to check and you can use any tool you want/like/are used to to verify that, cause Sync uses a standard TCP/UDP connection to peers. In your case, direct connection is not possible and thus relay is used. 

On 5/19/2017 at 5:48 AM, iaw4 said:

used to work.  now it no longer does.

what happened between used to work and no longer does? anything is the setup changed? 

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weirdly, nothing.  and weirdly, it started to work again, again nothing.  this is why a step-by-step guide to checking where it is stuck (or a shell script) would be great.


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