Unable to save changes or create new pages.

[Carlos Viscarra]

Hello. I'm a new Sys Admin at my company and we have Confluence 6.11.2 - on Windows Server 2019. 

I have training coming up but sure enough it seems Synchrony threw an error. 

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1. Log from: C:\Program Files\Atlassian\Confluence\logs\atlassian-synchrony-proxy.txt

-->2020-03-11 09:38:50 ERROR c.a.s.p.w.WebSocketProxy:49 afterConnectionEstablished - Handshake error

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2. Log from: C:\Program Files\Atlassian\Application Data\Confluence\logs\atlassian-confluence.txt

-->

2020-03-11 08:19:15,633 ERROR [SimpleAsyncTaskExecutor-1] [web.socket.client.WebSocketConnectionManager] log Failed to connect
javax.websocket.DeploymentException: The HTTP request to initiate the WebSocket connection failed
at org.apache.tomcat.websocket.WsWebSocketContainer.connectToServerRecursive(WsWebSocketContainer.java:486)
at org.apache.tomcat.websocket.WsWebSocketContainer.connectToServer(WsWebSocketContainer.java:195)
at org.springframework.web.socket.client.standard.StandardWebSocketClient$1.call(StandardWebSocketClient.java:152)
at org.springframework.web.socket.client.standard.StandardWebSocketClient$1.call(StandardWebSocketClient.java:149)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.util.concurrent.ExecutionException: java.io.IOException: The remote computer refused the network connection.

at sun.nio.ch.PendingFuture.get(PendingFuture.java:202)
at org.apache.tomcat.websocket.WsWebSocketContainer.connectToServerRecursive(WsWebSocketContainer.java:341)
... 5 more
Caused by: java.io.IOException: The remote computer refused the network connection.

at sun.nio.ch.Iocp.translateErrorToIOException(Iocp.java:309)
at sun.nio.ch.Iocp.access$700(Iocp.java:46)
at sun.nio.ch.Iocp$EventHandlerTask.run(Iocp.java:399)
... 1 more

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3. Screen shot from our Administration Configuration page:

[Daniel Wong · Accepted solution]

Hi Carlos,

It looks like the synchrony service is having trouble establishing connection to Confluence. In particular this part of the error log:

Caused by: java.io.IOException: The remote computer refused the network connection.

You might want to check your firewall settings to ensure the synchrony ports are open.
Have a read through the following KB articles for some help with troubleshooting:

• https://confluence.atlassian.com/doc/troubleshooting-collaborative-editing-858772087.html
• https://confluence.atlassian.com/kb/network-and-connectivity-troubleshooting-guide-720405335.html

If you need to quickly get page edits working and don't have a huge requirement to have collaborative editing, then you can actually switch Collaborative editing off temporarily. This will allow people to add/edit pages until you sort out the network issues.

[Carlos Viscarra]

Hi Daniel,

Seems the Synchrony cache had maxed out. Increased memory pool max capacity. Then restarted Synchrony. Go to Services - right click the Atlassian service, click properties then edit the java using the command prompt. 

Cheers!

Carlos