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Make DNS resolution order selectable during runtime or compile time (#6865)

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* Make DNS resolution order selectable during runtime or compile time (only in dual stack mode).

* Extend IPv6 example to show usage of new hostByName function with selectable resolving order

* Fix function definition of fqdn_rt in IPv6.ino.

* Fix function call.

* Fix missing bracket...

* Only run if built with dual stack support

* Make DNS resolution order selectable during runtime or compile time (only in dual stack mode).

* Extend IPv6 example to show usage of new hostByName function with selectable resolving order

* Fix function definition of fqdn_rt in IPv6 example.

* Implement enum class for resolve type

* Fix example IPv6.ino

* Fix typedef in ESP8266WiFiGeneric.h function call

* Change enum class definition to not depend on lwip/dns.h

* Move err_t err definition outside switch. Fix typecast.

* Always define DNSResolveType as pio test otherwise failes even if the enum class isn't used.

Co-authored-by: altelch <heiko.krupp@rhrk.uni-kl.de>
Co-authored-by: david gauchard <gauchard@laas.fr>
This commit is contained in:
Heiko Krupp
2020-04-09 18:17:54 +02:00
committed by GitHub
parent bc170e6d63
commit fad056442d
3 changed files with 88 additions and 4 deletions
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11
libraries/ESP8266WiFi/src/ESP8266WiFiGeneric.h
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@ -42,6 +42,14 @@ typedef std::shared_ptr<WiFiEventHandlerOpaque> WiFiEventHandler;
typedef void (*WiFiEventCb)(WiFiEvent_t);
enum class DNSResolveType: uint8_t
{
DNS_AddrType_IPv4 = 0, // LWIP_DNS_ADDRTYPE_IPV4 = 0
DNS_AddrType_IPv6, // LWIP_DNS_ADDRTYPE_IPV6 = 1
DNS_AddrType_IPv4_IPv6, // LWIP_DNS_ADDRTYPE_IPV4_IPV6 = 2
DNS_AddrType_IPv6_IPv4 // LWIP_DNS_ADDRTYPE_IPV6_IPV4 = 3
};
struct WiFiState;
class ESP8266WiFiGenericClass {
@ -113,6 +121,9 @@ class ESP8266WiFiGenericClass {
public:
int hostByName(const char* aHostname, IPAddress& aResult);
int hostByName(const char* aHostname, IPAddress& aResult, uint32_t timeout_ms);
#if LWIP_IPV4 && LWIP_IPV6
int hostByName(const char* aHostname, IPAddress& aResult, uint32_t timeout_ms, DNSResolveType resolveType);
#endif
bool getPersistent();
protected: