final XMPPTCPConnectionConfiguration connectionConfiguration = XMPPTCPConnectionConfiguration.builder()
.setServiceName(SERVER_ADDRESS)
.setHost(SERVER_ADDRESS) ----missing in your code
service name may not be used for resolving purpose
final XMPPTCPConnectionConfiguration connectionConfiguration = XMPPTCPConnectionConfiguration.builder()
.setServiceName(SERVER_ADDRESS)
.setHost(SERVER_ADDRESS) ----missing in your code
service name may not be used for resolving purpose