sets the opcode for this dnsmessage . concode_field_sep boolean recursionDesired concode_elem_sep DnsMessage<? extends DnsHeader> parent concode_elem_sep int TYPE_RESPONSE concode_elem_sep int OPCODE_QUERY concode_elem_sep int OPCODE_IQUERY concode_elem_sep int id concode_elem_sep int opcode concode_elem_sep int type concode_elem_sep int TYPE_QUERY concode_field_sep int questionCount concode_elem_sep int answerCount concode_elem_sep boolean isRecursionDesired concode_elem_sep int getType concode_elem_sep DnsHeader setRecursionDesired concode_elem_sep DnsHeader setId concode_elem_sep int getId concode_elem_sep int additionalResourceCount concode_elem_sep DnsHeader setType concode_elem_sep int getOpcode concode_elem_sep int authorityResourceCount
DnsHeader function ( int arg0 ) { this . opcode = arg0 ; return this ; }