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Extend handler_who_is_unicast() to broadcast I-Am anyway if the Who-Is request was an Original-Broadcast or Forwarded-NPDU.

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tbrennan3
2011-10-28 14:43:06 +00:00
parent 6eb2aef654
commit ff3c0590f2
1 changed files with 15 additions and 7 deletions
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bacnet-stack/demo/handler/h_whois.c
+15 -7
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@@ -76,12 +76,13 @@ void handler_who_is(
return;
}
/** Handler for Who-Is requests, with Unicast I-Am response (per Addendum 135-2004q).
/** Handler for Who-Is requests, with Unicast I-Am response (per Addendum 135-2004q),
* unless the Who-Is was an Original-Broadcast or Forwarded-NPDU.
* @ingroup DMDDB
* @param service_request [in] The received message to be handled.
* @param service_len [in] Length of the service_request message.
* @param src [in] The BACNET_ADDRESS of the message's source that the
* response will be sent back to.
* @param src [in] The BACNET_ADDRESS of the message's source, that the
* response will be sent back to if unicast.
*/
void handler_who_is_unicast(
uint8_t * service_request,
@@ -91,13 +92,14 @@ void handler_who_is_unicast(
int len = 0;
int32_t low_limit = 0;
int32_t high_limit = 0;
bool bOkToSend = false;
len =
whois_decode_service_request(service_request, service_len, &low_limit,
&high_limit);
/* If no limits, then always respond */
if (len == 0)
Send_I_Am_Unicast(&Handler_Transmit_Buffer[0], src);
bOkToSend = true;
else if (len != -1) {
/* is my device id within the limits? */
if (((Device_Object_Instance_Number() >= (uint32_t) low_limit) &&
@@ -105,10 +107,16 @@ void handler_who_is_unicast(
||
/* BACnet wildcard is the max instance number - everyone responds */
((BACNET_MAX_INSTANCE >= (uint32_t) low_limit) &&
(BACNET_MAX_INSTANCE <= (uint32_t) high_limit)))
Send_I_Am_Unicast(&Handler_Transmit_Buffer[0], src);
(BACNET_MAX_INSTANCE <= (uint32_t) high_limit)))
bOkToSend = true;
}
if ( bOkToSend ) {
if ( bvlc_get_function_code() == BVLC_ORIGINAL_UNICAST_NPDU )
Send_I_Am_Unicast(&Handler_Transmit_Buffer[0], src);
else
Send_I_Am(&Handler_Transmit_Buffer[0]);
}
return;
}