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mDNS resolution for *.local fixes #16269

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"Add user control over DNS timeout reducing blocking"  c988ba1645 created DnsClient so that a timeout can be used to prevent blocking on ESP32, but it can't do one-shot mDNS queries. Use WiFi.hostByName () for those.
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rogg 2022-08-20 23:17:05 -07:00 committed by GitHub
parent 204289e1ab
commit 16c39aab9e
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1 changed files with 11 additions and 0 deletions
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tasmota/tasmota_support/support_wifi.ino
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@ -807,6 +807,17 @@ void wifiKeepAlive(void) {
#endif // ESP8266 #endif // ESP8266
bool WifiHostByName(const char* aHostname, IPAddress& aResult) { bool WifiHostByName(const char* aHostname, IPAddress& aResult) {
// DnsClient can't do one-shot mDNS queries so use WiFi.hostByName() for *.local
size_t hostname_len = strlen(aHostname);
if (strstr(aHostname, ".local") == &aHostname[hostname_len] - 6) {
if (WiFi.hostByName(aHostname, aResult)) {
// Host name resolved
if (0xFFFFFFFF != (uint32_t)aResult) {
return true;
}
return false;
}
}
// Use this instead of WiFi.hostByName or connect(host_name,.. to block less if DNS server is not found // Use this instead of WiFi.hostByName or connect(host_name,.. to block less if DNS server is not found
uint32_t dns_address = (!TasmotaGlobal.global_state.eth_down) ? Settings->eth_ipv4_address[3] : Settings->ipv4_address[3]; uint32_t dns_address = (!TasmotaGlobal.global_state.eth_down) ? Settings->eth_ipv4_address[3] : Settings->ipv4_address[3];
DnsClient.begin((IPAddress)dns_address); DnsClient.begin((IPAddress)dns_address);