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JakSSK
Contributor II

Qlik Data Transfer Connection

Hi,

We are using Qlik Data Transfer but the connection isn't stable. Is this expected behaviour? If not, where can we start looking for the cause?

Log file excerpt below:

42 2024-07-29 23:38:17 [Service ] [INFO ] sending ping message to QCS
42 2024-07-29 23:38:37 [Service ] [INFO ] sending ping message to QCS
42 2024-07-29 23:38:57 [Service ] [INFO ] sending ping message to QCS
15 2024-07-29 23:39:17 [Service ] [INFO ] sending ping message to QCS
15 2024-07-29 23:39:37 [Service ] [INFO ] sending ping message to QCS
22 2024-07-29 23:39:57 [Service ] [INFO ] sending ping message to QCS
22 2024-07-29 23:40:17 [Service ] [INFO ] sending ping message to QCS
46 2024-07-29 23:40:31 [Service ] [ERROR] Connection to bissk.eu.qlikcloud.com:443 failed
System.Net.WebSockets.WebSocketException (0x80004005): The remote party closed the WebSocket connection without completing the close handshake.
at System.Net.WebSockets.ManagedWebSocket.ThrowEOFUnexpected()
at System.Net.WebSockets.ManagedWebSocket.EnsureBufferContainsAsync(Int32 minimumRequiredBytes, CancellationToken cancellationToken)
at System.Runtime.CompilerServices.PoolingAsyncValueTaskMethodBuilder`1.StateMachineBox`1.System.Threading.Tasks.Sources.IValueTaskSource.GetResult(Int16 token)
at System.Net.WebSockets.ManagedWebSocket.ReceiveAsyncPrivate[TResult](Memory`1 payloadBuffer, CancellationToken cancellationToken)
at System.Runtime.CompilerServices.PoolingAsyncValueTaskMethodBuilder`1.StateMachineBox`1.System.Threading.Tasks.Sources.IValueTaskSource<TResult>.GetResult(Int16 token)
at System.Threading.Tasks.ValueTask`1.ValueTaskSourceAsTask.<>c.<.cctor>b__4_0(Object state)
--- End of stack trace from previous location ---
at QCSConnectionBroker.QCSWebSocketsClient.Receive(ClientWebSocket socket)
at QCSConnectionBroker.QCSWebSocketsClient.StartConnectionAsync()
46 2024-07-29 23:40:31 [Service ] [INFO ] Connection to bissk.eu.qlikcloud.com:443 was closed (or was never established)
46 2024-07-29 23:40:31 [Service ] [INFO ] Last pong message was received at : 07/29/2024 21:40:17
46 2024-07-29 23:40:32 [Service ] [INFO ] Retrying connection
22 2024-07-29 23:40:33 [Service ] [INFO ] QCS production tenant, default CA verified
22 2024-07-29 23:40:33 [Service ] [INFO ] client connected successfully to bissk.eu.qlikcloud.com:443; awaiting messages
39 2024-07-30 00:40:30 [Service ] [ERROR] Connection to bissk.eu.qlikcloud.com:443 failed
System.Net.WebSockets.WebSocketException (0x80004005): The remote party closed the WebSocket connection without completing the close handshake.
at System.Net.WebSockets.ManagedWebSocket.ThrowEOFUnexpected()
at System.Net.WebSockets.ManagedWebSocket.EnsureBufferContainsAsync(Int32 minimumRequiredBytes, CancellationToken cancellationToken)
at System.Runtime.CompilerServices.PoolingAsyncValueTaskMethodBuilder`1.StateMachineBox`1.System.Threading.Tasks.Sources.IValueTaskSource.GetResult(Int16 token)
at System.Net.WebSockets.ManagedWebSocket.ReceiveAsyncPrivate[TResult](Memory`1 payloadBuffer, CancellationToken cancellationToken)
at System.Runtime.CompilerServices.PoolingAsyncValueTaskMethodBuilder`1.StateMachineBox`1.System.Threading.Tasks.Sources.IValueTaskSource<TResult>.GetResult(Int16 token)
at System.Threading.Tasks.ValueTask`1.ValueTaskSourceAsTask.<>c.<.cctor>b__4_0(Object state)
--- End of stack trace from previous location ---
at QCSConnectionBroker.QCSWebSocketsClient.Receive(ClientWebSocket socket)
at QCSConnectionBroker.QCSWebSocketsClient.StartConnectionAsync()
39 2024-07-30 00:40:30 [Service ] [INFO ] Connection to bissk.eu.qlikcloud.com:443 was closed (or was never established)
39 2024-07-30 00:40:30 [Service ] [INFO ] Last pong message was received at : 07/29/2024 21:40:17
39 2024-07-30 00:40:31 [Service ] [INFO ] Retrying connection
91 2024-07-30 00:40:31 [Service ] [INFO ] QCS production tenant, default CA verified
91 2024-07-30 00:40:35 [Service ] [INFO ] client connected successfully to bissk.eu.qlikcloud.com:443; awaiting messages
91 2024-07-30 00:40:35 [Service ] [INFO ] Secure Channel initiated, ChannelId: f4485fdb-08af-4c65-b3b3-260aaf04d24a
91 2024-07-30 00:40:55 [Service ] [INFO ] sending ping message to QCS
91 2024-07-30 00:41:15 [Service ] [INFO ] sending ping message to QCS
39 2024-07-30 00:41:35 [Service ] [INFO ] sending ping message to QCS

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