2021-04-30 11:15:37  [ http-nio-8180-exec-5:4026508936 ] - [ INFO ]  Unable to find codec class : com.k_int.gen.ILL_APDU_Delivery_Info.APDU_Delivery_Info_codec
2021-04-30 11:15:40  [ Z3950 Search Thread library.ox.ac.uk:4026511858 ] - [ INFO ]  java.net.SocketException: Socket closed - hostname=library.ox.ac.uk hashcode of endpoint:1015862833
2021-04-30 11:15:58  [ Z3950 Search Thread library.ox.ac.uk:4026529421 ] - [ INFO ]  java.net.SocketException: Socket closed - hostname=library.ox.ac.uk hashcode of endpoint:393744300
2021-04-30 11:16:39  [ Z3950 Search Thread library.ox.ac.uk:4026570297 ] - [ INFO ]  java.net.SocketException: Socket closed - hostname=library.ox.ac.uk hashcode of endpoint:107393803