![](/media/cache/profiles/3f4243a6f681f2920ac3e95a63517274.50x50_q85.jpg)
code that uses Watchdog to reset Mbed every 30seconds. After 30-60mins, the ethernet interface fails to setup() after WatchDog reset.
Diff: EthernetNetIf/LPC2368/api/DNSRequest.h
- Revision:
- 0:0ce833f21e63
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/EthernetNetIf/LPC2368/api/DNSRequest.h Thu Jun 07 05:44:29 2012 +0000 @@ -0,0 +1,131 @@ + +/* +Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com) + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +THE SOFTWARE. +*/ + +/** \file +DNS Request header file +*/ + +#ifndef DNSREQUEST_H +#define DNSREQUEST_H + +#include "core/net.h" +#include "core/ipaddr.h" +#include "core/host.h" +//Essentially it is a safe interface to NetDnsRequest + +///DNS Request error codes +enum DNSRequestErr +{ + __DNS_MIN = -0xFFFF, + DNS_SETUP, ///<DNSRequest not properly configured + DNS_IF, ///<Interface has problems, does not exist or is not initialized + DNS_MEM, ///<Not enough mem + DNS_INUSE, ///<Interface / Port is in use + DNS_PROCESSING, ///<Request has not completed +//... + DNS_OK = 0 ///<Success +}; + +///DNS Request Result Events +enum DNSReply +{ + DNS_PRTCL, + DNS_NOTFOUND, ///Hostname is unknown + DNS_ERROR, ///Problem with DNS Service + //... + DNS_FOUND, +}; + +class NetDnsRequest; +enum NetDnsReply; + +///This is a simple DNS Request class +/** + This class exposes an API to deal with DNS Requests +*/ +class DNSRequest +{ +public: + ///Creates a new request + DNSRequest(); + + ///Terminates and closes request + ~DNSRequest(); + + ///Resolves an hostname + /** + @param hostname : hostname to resolve + */ + DNSRequestErr resolve(const char* hostname); + + ///Resolves an hostname + /** + @param host : hostname to resolve, the result will be stored in the IpAddr field of this object + */ + DNSRequestErr resolve(Host* pHost); + + ///Setups callback + /** + The callback function will be called on result. + @param pMethod : callback function + */ + void setOnReply( void (*pMethod)(DNSReply) ); + + class CDummy; + ///Setups callback + /** + The callback function will be called on result. + @param pItem : instance of class on which to execute the callback method + @param pMethod : callback method + */ + template<class T> + void setOnReply( T* pItem, void (T::*pMethod)(DNSReply) ) + { + m_pCbItem = (CDummy*) pItem; + m_pCbMeth = (void (CDummy::*)(DNSReply)) pMethod; + } + + ///Gets IP address once it has been resolved + /** + @param pIp : pointer to an IpAddr instance in which to store the resolved IP address + */ + DNSRequestErr getResult(IpAddr* pIp); + + ///Closes DNS Request before completion + DNSRequestErr close(); + +protected: + void onNetDnsReply(NetDnsReply r); + DNSRequestErr checkInst(); + +private: + NetDnsRequest* m_pNetDnsRequest; + + CDummy* m_pCbItem; + void (CDummy::*m_pCbMeth)(DNSReply); + + void (*m_pCb)(DNSReply); + +}; + +#endif