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ESP8266WiFi: support timeout for WiFi.hostByName

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This commit is contained in:
Ivan Grokhotkov 2017-05-18 17:10:38 +08:00 committed by Ivan Grokhotkov
parent 85078f47a0
commit 2aeac91c90
2 changed files with 17 additions and 2 deletions
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18
libraries/ESP8266WiFi/src/ESP8266WiFiGeneric.cpp
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@ -426,6 +426,8 @@ void wifi_dns_found_callback(const char *name, ip_addr_t *ipaddr, void *callback
void wifi_dns_found_callback(const char *name, const ip_addr_t *ipaddr, void *callback_arg);
#endif
static bool _dns_lookup_pending = false;
/**
* Resolve the given hostname to an IP address.
* @param aHostname Name to be resolved
@ -433,7 +435,14 @@ void wifi_dns_found_callback(const char *name, const ip_addr_t *ipaddr, void *ca
* @return 1 if aIPAddrString was successfully converted to an IP address,
* else error code
*/
int ESP8266WiFiGenericClass::hostByName(const char* aHostname, IPAddress& aResult) {
int ESP8266WiFiGenericClass::hostByName(const char* aHostname, IPAddress& aResult)
{
return hostByName(aHostname, aResult, 10000);
}
int ESP8266WiFiGenericClass::hostByName(const char* aHostname, IPAddress& aResult, uint32_t timeout_ms)
{
ip_addr_t addr;
aResult = static_cast<uint32_t>(0);
@ -448,7 +457,9 @@ int ESP8266WiFiGenericClass::hostByName(const char* aHostname, IPAddress& aResul
if(err == ERR_OK) {
aResult = addr.addr;
} else if(err == ERR_INPROGRESS) {
esp_yield();
_dns_lookup_pending = true;
delay(timeout_ms);
_dns_lookup_pending = false;
// will return here when dns_found_callback fires
if(aResult != 0) {
err = ERR_OK;
@ -477,6 +488,9 @@ void wifi_dns_found_callback(const char *name, const ip_addr_t *ipaddr, void *ca
#endif
{
(void) name;
if (!_dns_lookup_pending) {
return;
}
if(ipaddr) {
(*reinterpret_cast<IPAddress*>(callback_arg)) = ipaddr->addr;
}

1
libraries/ESP8266WiFi/src/ESP8266WiFiGeneric.h
View File

@ -98,6 +98,7 @@ class ESP8266WiFiGenericClass {
public:
int hostByName(const char* aHostname, IPAddress& aResult);
int hostByName(const char* aHostname, IPAddress& aResult, uint32_t timeout_ms);
protected: