Jens,

Thank you for bringing up the question about network topology, it helped us 
to narrow down the problem.  We switched over to a direct Sync Gateway 
connection, and no longer observe this issue.  The culprit is likely a 
setting in the IIS Application Request Routing module that is causing the 
issue.  I'll post an update once that is figured out.

--
Eric Levine

On Thursday, April 2, 2015 at 1:23:34 PM UTC-4, Eric Levine wrote:
>
> We are creating a bunch of documents through the Sync Gateway's REST API. 
>  If we wait more than 5 minutes, then create more documents through the 
> REST API, the changes aren't synced to the client.  In the Sync Gateway 
> logs, we see the documents being created, and the client making the request 
> for the changes feed, but we do not see the follow up requests for the 
> client to retrieve the documents.  
>
> Here is our setup:
>
>    - The server is a physical machine in our office, and has pretty good 
>    specs (at least quad core and 8GB memory).  It is running Windows Server 
>    2012, IIS, Couchbase, and the Sync Gateway.  IIS is acting as a reverse 
>    proxy to the Sync Gateway, using URL rewrite rules.  We are running the 
>    Sync Gateway as a Windows Service that was setup through NSSM 
>    <https://nssm.cc/>,
>    - The client is connecting to our office WiFi
>
> I'll make a follow up post shortly with a more detailed log capture.
>
> --
> Eric Levine
>
> On Thursday, April 2, 2015 at 11:38:06 AM UTC-4, Jens Alfke wrote:
>>
>>
>> On Apr 2, 2015, at 8:14 AM, Eric Levine <[email protected]> wrote:
>>
>> We are using the .Net version of CBL, and it stops receiving changes from 
>> the Sync Gateway if there is 5 minutes or more of inactivity. When I look 
>> at the Sync Gateway logs, I see that the Pull Replicator sets the heartbeat 
>> query parameter to 5 minutes when it requests the changes feed.  The status 
>> of the pull replicator doesn't change from idle, and it doesn't fire a 
>> changed event at that time.
>>
>>
>> Well, it wouldn’t fire any event if there’s inactivity. Are you talking 
>> about a situation where, *after* >5 minutes of inactivity, the gateway 
>> does have a change but the client doesn’t receive it? Can you describe the 
>> sequence of events (and what gets logged on either side) in more detail?
>>
>> Also, please describe the network topology between SG and CBL — in 
>> particular any proxies/gateways/load-balancers (especially ones from cloud 
>> services like AWS, which are known for terminating ‘idle’ sockets.)
>>
>> —Jens
>>
>>

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