| // Arduino DNS client for WizNet5100-based Ethernet shield | |
| // (c) Copyright 2009-2010 MCQN Ltd. | |
| // Released under Apache License, version 2.0 | |
| class DNSClient | |
| { | |
| public: | |
| void begin(const IPAddress& aDNSServer); | |
| /** Convert a numeric IP address string into a four-byte IP address. | |
| @param aIPAddrString IP address to convert | |
| @param aResult IPAddress structure to store the returned IP address | |
| @result 1 if aIPAddrString was successfully converted to an IP address, | |
| else error code | |
| */ | |
| int inet_aton(const char *aIPAddrString, IPAddress& aResult); | |
| /** Resolve the given hostname to an IP address. | |
| @param aHostname Name to be resolved | |
| @param aResult IPAddress structure to store the returned IP address | |
| @result 1 if aIPAddrString was successfully converted to an IP address, | |
| else error code | |
| */ | |
| int getHostByName(const char* aHostname, IPAddress& aResult, uint16_t timeout=5000); | |
| protected: | |
| uint16_t BuildRequest(const char* aName); | |
| uint16_t ProcessResponse(uint16_t aTimeout, IPAddress& aAddress); | |
| IPAddress iDNSServer; | |
| uint16_t iRequestId; | |
| EthernetUDP iUdp; | |
| }; | |