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Added recurring foreign device registration for server demo.

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This commit is contained in:
skarg
2010-07-02 12:20:51 +00:00
parent 0dff7c85eb
commit 0a468dbb5a
3 changed files with 82 additions and 44 deletions
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bacnet-stack/demo/handler/dlenv.c
+74 -39
View File
@@ -38,16 +38,84 @@
/** @file dlenv.c Initialize the DataLink configuration. */
/** Initialize the DataLink configuration from Environment variables,
/* timer used to renew Foreign Device Registration */
static uint16_t BBMD_Timer_Seconds;
/** Register as a Foreign Device
* @ingroup DataLink
* The Environment Variables depend on defines BACDL_BIP and BBMD_ENABLED:
* - BACNET_BBMD_PORT - 0..65534, defaults to 47808
* - BACNET_BBMD_TIMETOLIVE - 0..65535 seconds, defaults to 60000
* - BACNET_BBMD_ADDRESS - dotted IPv4 address
*/
void dlenv_register_as_foreign_device(void)
{
#if defined(BACDL_BIP) && BBMD_ENABLED
char *pEnv = NULL;
long bbmd_timetolive_seconds = 60000;
long bbmd_port = 0xBAC0;
long bbmd_address = 0;
pEnv = getenv("BACNET_BBMD_PORT");
if (pEnv) {
bbmd_port = strtol(pEnv, NULL, 0);
if (bbmd_port > 0xFFFF) {
bbmd_port = 0xBAC0;
}
}
pEnv = getenv("BACNET_BBMD_TIMETOLIVE");
if (pEnv) {
bbmd_timetolive_seconds = strtol(pEnv, NULL, 0);
if (bbmd_timetolive_seconds > 0xFFFF) {
bbmd_timetolive_seconds = 0xFFFF;
}
}
pEnv = getenv("BACNET_BBMD_ADDRESS");
if (pEnv) {
bbmd_address = bip_getaddrbyname(pEnv);
if (bbmd_address) {
struct in_addr addr;
addr.s_addr = bbmd_address;
fprintf(stderr,
"Registering with BBMD at %s:%ld for %ld seconds\n",
inet_ntoa(addr), bbmd_port, bbmd_timetolive_seconds);
bvlc_register_with_bbmd(bbmd_address, (uint16_t)bbmd_port,
(uint16_t)bbmd_timetolive_seconds);
BBMD_Timer_Seconds = bbmd_timetolive_seconds;
}
}
#endif
}
/** Datalink maintenance timer
* @ingroup DataLink
*
* Call this function to renew Foreign Device Registration
*/
void dlenv_maintenance_timer(uint16_t elapsed_seconds)
{
if (BBMD_Timer_Seconds) {
if (BBMD_Timer_Seconds <= elapsed_seconds) {
BBMD_Timer_Seconds = 0;
} else {
BBMD_Timer_Seconds -= elapsed_seconds;
}
if (BBMD_Timer_Seconds == 0) {
dlenv_register_as_foreign_device();
}
}
}
/** Initialize the DataLink configuration from Environment variables,
* or else to defaults.
* @ingroup DataLink
* The items configured depend on which BACDL_ the code is built for,
* eg, BACDL_BIP.
*
* eg, BACDL_BIP.
*
* For most items, checks first for an environment variable, and, if
* found, uses that to set the item's value. Otherwise, will set
* to a default value.
*
* to a default value.
*
* The Environment Variables, by BACDL_ type, are:
* - BACDL_ALL: (the general-purpose solution)
* - BACNET_DATALINK to set which BACDL_ type we are using.
@@ -70,11 +138,6 @@ void dlenv_init(
void)
{
char *pEnv = NULL;
#if defined(BACDL_BIP) && BBMD_ENABLED
long bbmd_port = 0xBAC0;
long bbmd_address = 0;
long bbmd_timetolive_seconds = 60000;
#endif
#if defined(BACDL_ALL)
pEnv = getenv("BACNET_DATALINK");
@@ -143,33 +206,5 @@ void dlenv_init(
if (pEnv) {
tsm_invokeID_set((uint8_t) strtol(pEnv, NULL, 0));
}
#if defined(BACDL_BIP) && BBMD_ENABLED
pEnv = getenv("BACNET_BBMD_PORT");
if (pEnv) {
bbmd_port = strtol(pEnv, NULL, 0);
if (bbmd_port > 0xFFFF) {
bbmd_port = 0xBAC0;
}
}
pEnv = getenv("BACNET_BBMD_TIMETOLIVE");
if (pEnv) {
bbmd_timetolive_seconds = strtol(pEnv, NULL, 0);
if (bbmd_timetolive_seconds > 0xFFFF) {
bbmd_timetolive_seconds = 0xFFFF;
}
}
pEnv = getenv("BACNET_BBMD_ADDRESS");
if (pEnv) {
bbmd_address = bip_getaddrbyname(pEnv);
if (bbmd_address) {
struct in_addr addr;
addr.s_addr = bbmd_address;
fprintf(stderr,
"Registering with BBMD at %s:%ld for %ld seconds\n",
inet_ntoa(addr), bbmd_port, bbmd_timetolive_seconds);
bvlc_register_with_bbmd(bbmd_address, (uint16_t)bbmd_port,
(uint16_t)bbmd_timetolive_seconds);
}
}
#endif
dlenv_register_as_foreign_device();
}