Solution : https://service.sap.com/sap/support/notes/556546 (SAP Service marketplace login required)
Key words : 
port <port1>            starting http server listening, starting sdm - software delivery manager, 0000            starting sdm server listening, sdm server, port <port2>, sdm version, create serversocket, message appears, compiled code, programming error
Related Notes : 
       
| 532892 | Installing a new version of the Software Delivery Manager |