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fix(mdns): add the maximum number of services

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* Original commit: espressif/esp-idf@ba458c69cf
This commit is contained in:
Liu Han
2018-06-15 15:55:48 +08:00
committed by suren-gabrielyan-espressif
parent b26c8665f8
commit 0191d6fcd7
3 changed files with 36 additions and 0 deletions
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20
components/mdns/mdns.c
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@ -96,6 +96,21 @@ static mdns_srv_item_t * _mdns_get_service_item(const char * service, const char
return NULL;
}
static bool _mdns_can_add_more_services(void)
{
mdns_srv_item_t * s = _mdns_server->services;
uint16_t service_num = 0;
while (s) {
service_num ++;
s = s->next;
if (service_num >= MDNS_MAX_SERVICES) {
return false;
}
}
return true;
}
esp_err_t _mdns_send_rx_action(mdns_rx_packet_t * packet)
{
mdns_action_t * action = NULL;
@ -4124,6 +4139,11 @@ esp_err_t mdns_service_add(const char * instance, const char * service, const ch
if (!_mdns_server || _str_null_or_empty(service) || _str_null_or_empty(proto) || !port) {
return ESP_ERR_INVALID_ARG;
}
if (!_mdns_can_add_more_services()) {
return ESP_ERR_NO_MEM;
}
mdns_srv_item_t * item = _mdns_get_service_item(service, proto);
if (item) {
return ESP_ERR_INVALID_ARG;