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2735676 - SAP Cloud Connector - TunnelHandshakeException: Timed out while waiting for response from server

Symptom

SAP Cloud Connector (SCC) connection to SAP Cloud Platform does not work. Debugged SCC ljs_trace shows the following entries:

[...]
2018-10-30 15:55:30,306 +0100#INFO#com.sap.core.connectivity.tunnel.client.notification.NotificationClientEventHandler#notification-client-11-2# #Received "open tunnel event" message (packet type: 1) for tunnel id account:///<subaccount> and hostId <XXXXXXXXX>|
2018-10-30 15:55:30,307 +0100#DEBUG#com.sap.core.connectivity.tunnel.client.ManagedTunnelClient#Thread-58# #Allowed access for tunnel with id 'account:///<subaccount>' and attributes: 'applicationType:JAVA, applicationAccount:sci, applicationName:proxy'|
2018-10-30 15:55:30,308 +0100#DEBUG#com.sap.core.connectivity.tunnel.client.AbstractClient#Thread-58# #Connecting to address connectivitytunnel.hana.ondemand.com/155.56.210.84:443 using proxy /<IP of the proxy>:3128. Proxy user is |
2018-10-30 15:55:30,309 +0100#DEBUG#com.sap.core.connectivity.tunnel.client.AbstractTunnelClient#Thread-58# #Waiting the handshake with tunnel server to complete for tunnel ID: account:///<subaccount>|
2018-10-30 15:55:30,313 +0100#DEBUG#com.sap.core.connectivity.tunnel.client.AbstractClient#tunnel-client-12-2# #Successfully connected channel: [id: 0xdf3d9281, L:/<IP of the on-premise host>:11529 - R:/<IP of the proxy>:3128]. Starting handshake with tunnel server for tunnel ID: account:///<subaccount>|
[...]
2018-10-30 15:56:30,319 +0100#DEBUG#com.sap.core.connectivity.tunnel.client.AbstractClient#tunnel-client-12-2# #Tunnel handshake failed! Closing the tunnel channel immediately
com.sap.core.connectivity.tunnel.core.handshake.TunnelHandshakeException: Timed out while waiting for response from server for tunnel ID: account:///<subaccount>
[...]


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Environment

  • SAP CLoud Platform
  • SAP Cloud Platform Connectivity
  • SAP Cloud Connector

Product

Identity Authentication all versions ; SAP Business Technology Platform all versions ; SAP Connectivity service all versions

Keywords

proxy, SAP Cloud connector, cloud connector, TunnelHandshakeException, Timed out while waiting for response from server, Tunnel handshake failed!, Closing the tunnel channel immediately, Tunnel handshake failed , KBA , BC-MID-SCC , SAP Cloud Connector On-Demand/On-Premise Connectivity , Problem

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