public static String decodeFirstOctet(Pdu pdu) {
// Use reflection to check for method signatures hasTpXXX() and getTpXXX()
// that are specific to a particular type in actual object
StringBuffer sb = new StringBuffer();
sb.append("First Octet: " + PduUtils.byteToPdu(pdu.getFirstOctet()));
sb.append(" [");
// TP-MTI
switch (pdu.getTpMti()) {
case PduUtils.TP_MTI_SMS_DELIVER:
sb.append("TP-MTI: (SMS-DELIVER)");
break;
case PduUtils.TP_MTI_SMS_STATUS_REPORT:
sb.append("TP-MTI: (SMS-STATUS REPORT)");
break;
case PduUtils.TP_MTI_SMS_SUBMIT:
sb.append("TP-MTI: (SMS-SUBMIT)");
break;
default:
throw new RuntimeException("Invalid message type");
}
// TP-MMS
if (hasTpField(pdu, "TpMms") != null) {
if (hasTpField(pdu, "TpMms")) {
sb.append(", TP-MMS: (Has more messages)");
} else {
sb.append(", TP-MMS: (has no messages)");
}
}
// TP-RD
if (hasTpField(pdu, "TpRd") != null) {
if (hasTpField(pdu, "TpRd")) {
sb.append(", TP-RD: (Reject duplicates)");
} else {
sb.append(", TP-RD: (allow duplicates)");
}
}
// TP-VPF
if ((hasTpField(pdu, "TpVpf") != null) && (hasTpField(pdu, "TpVpf") != false)) {
switch (getTpField(pdu, "TpVpf")) {
case PduUtils.TP_VPF_INTEGER:
sb.append(", TP-VPF: (validity format, integer");
break;
case PduUtils.TP_VPF_TIMESTAMP:
sb.append(", TP-VPF: (validity format, timestamp");
break;
case PduUtils.TP_VPF_NONE:
sb.append(", TP-VPF: (validity format, none)");
break;
}
}
// TP-SRI
if (hasTpField(pdu, "TpSri") != null) {
if (hasTpField(pdu, "TpSri")) {
sb.append(", TP-SRI: (Requests Status Report)");
} else {
sb.append(", TP-SRI: (No Status Report)");
}
}
// TP-SRR
if (hasTpField(pdu, "TpSrr") != null) {
if (hasTpField(pdu, "TpSrr")) {
sb.append(", TP-SRR: (Requests Status Report)");
} else {
sb.append(", TP-SRR: (No Status Report)");
}
}
// TP-UDHI
if (pdu.hasTpUdhi()) {
sb.append(", TP-UDHI: (has UDH)");
} else {
sb.append(", TP-UDHI: (no UDH)");
}
sb.append("]");
sb.append("\n");
return sb.toString();
}
