arduino stuffs
Diffstat (limited to 'libraries/Ethernet/src/Dns.h')
| -rw-r--r-- | libraries/Ethernet/src/Dns.h | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/libraries/Ethernet/src/Dns.h b/libraries/Ethernet/src/Dns.h new file mode 100644 index 0000000..5f5b30f --- /dev/null +++ b/libraries/Ethernet/src/Dns.h @@ -0,0 +1,40 @@ +// Arduino DNS client for WizNet5100-based Ethernet shield +// (c) Copyright 2009-2010 MCQN Ltd. +// Released under Apache License, version 2.0 + +#ifndef DNSClient_h +#define DNSClient_h + +#include "Ethernet.h" + +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; +}; + +#endif |