Notice that only 19 worked and one out of 20 transactions failed with "Request send error Socket operation timed out before it could be completed"
Observed this stack trace in the request process log:
...
Caused by: com.ibm.b2b.comms.http.sender.exception.ConnectFailedException: Connection Failure for connection properties [RemoteHost:B-cddd3d2e86e5fbd4cdabf61d42da5c79.iso6523-actorid-upis.acc.edelivery.tech.ec.europa.eu,RemotePort:80,Localhost:9.113.28.69]
at com.ibm.b2b.comms.http.sender.impl.channelfw.Worker.doConnectAndSend(Worker.java:112)
at com.ibm.b2b.comms.http.sender.impl.SenderImpl.send(SenderImpl.java:54)
at Proxy88cb390e_44d8_4241_b85b_34cf8126c2dd.send(Unknown Source)
at Proxy88cb390e_44d8_4241_b85b_34cf8126c2dd.send(Unknown Source)
at Proxy57bf273e_2ad9_4144_a944_09eaa56d866c.send(Unknown Source)
at com.ibm.b2b.comms.emb.handler.impl.HTTPSenderHandler.process(HTTPSenderHandler.java:94)
... 16 more
Caused by: java.net.SocketTimeoutException: Socket operation timed out before it could be completed
at com.ibm.b2b.ws.tcpchannel.internal.ConnectChannelSelector.checkForTimeouts(ConnectChannelSelector.java:230)
at com.ibm.b2b.ws.tcpchannel.internal.ChannelSelector.run(ChannelSelector.java:237)
... 1 more
Observed this stack trace in the request process log: ... Caused by: com.ibm.b2b.comms.http.sender.exception.ConnectFailedException: Connection Failure for connection properties [RemoteHost:B-cddd3d2e86e5fbd4cdabf61d42da5c79.iso6523-actorid-upis.acc.edelivery.tech.ec.europa.eu,RemotePort:80,Localhost:9.113.28.69] at com.ibm.b2b.comms.http.sender.impl.channelfw.Worker.doConnectAndSend(Worker.java:112) at com.ibm.b2b.comms.http.sender.impl.SenderImpl.send(SenderImpl.java:54) at Proxy88cb390e_44d8_4241_b85b_34cf8126c2dd.send(Unknown Source) at Proxy88cb390e_44d8_4241_b85b_34cf8126c2dd.send(Unknown Source) at Proxy57bf273e_2ad9_4144_a944_09eaa56d866c.send(Unknown Source) at com.ibm.b2b.comms.emb.handler.impl.HTTPSenderHandler.process(HTTPSenderHandler.java:94) ... 16 more Caused by: java.net.SocketTimeoutException: Socket operation timed out before it could be completed at com.ibm.b2b.ws.tcpchannel.internal.ConnectChannelSelector.checkForTimeouts(ConnectChannelSelector.java:230) at com.ibm.b2b.ws.tcpchannel.internal.ChannelSelector.run(ChannelSelector.java:237) ... 1 more