Sending a BACnet I-AM via BACnet stack 1.x version

bacnet-iam.cpp

// http://bacnetstack.com/
// To be a good BACnet Server we should announce our-self when joining a network. 
// Generate the IAM message and send it. 
char packet[MAXIMUM_BACNET_MESSAGE];
unsigned short payloadSize = fpIAm(SETTING_SERVER_BACNET_NETWORK, (unsigned char *)&deviceOffset, sizeof(unsigned int), packet, MAXIMUM_BACNET_MESSAGE, deviceOffset);
if (payloadSize > 0) {
    // Generate the connection string. 
    BYTE connectionString[10];
    sscanf_s("255.255.255.255", "%d.%d.%d.%d", &connectionString[0], &connectionString[1], &connectionString[2], &connectionString[3]);
    connectionString[4] = SETTING_BACNET_UDP_PORT / 256;
    connectionString[5] = SETTING_BACNET_UDP_PORT % 256;
    // Send the message 
    if (!SendUDPMessage(NULL, connectionString, 6, (BYTE *)packet, payloadSize, true)) {
        printf("Error: Could not send foreign device registration message\n");
    }
}