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netdnsrequest.h
00001 00002 /* 00003 Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com) 00004 00005 Permission is hereby granted, free of charge, to any person obtaining a copy 00006 of this software and associated documentation files (the "Software"), to deal 00007 in the Software without restriction, including without limitation the rights 00008 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 00009 copies of the Software, and to permit persons to whom the Software is 00010 furnished to do so, subject to the following conditions: 00011 00012 The above copyright notice and this permission notice shall be included in 00013 all copies or substantial portions of the Software. 00014 00015 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 00016 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 00017 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 00018 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 00019 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 00020 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 00021 THE SOFTWARE. 00022 */ 00023 00024 #ifndef NETDNSREQUEST_H 00025 #define NETDNSREQUEST_H 00026 00027 //class Socket; 00028 class Host; 00029 //class NetService; 00030 class NetDnsRequest; 00031 00032 #include "netservice.h" 00033 #include "ipaddr.h" 00034 #include "host.h" 00035 00036 enum NetDnsReply 00037 { 00038 NETDNS_PRTCL, 00039 NETDNS_NOTFOUND, //Hostname is unknown 00040 NETDNS_ERROR, //Problem with DNS Service 00041 //... 00042 NETDNS_FOUND, 00043 }; 00044 00045 class NetDnsRequest : public NetService 00046 { 00047 public: 00048 NetDnsRequest(const char* hostname); 00049 NetDnsRequest(Host* pHost); 00050 virtual ~NetDnsRequest(); 00051 00052 class CDummy; 00053 template<class T> 00054 //Linker bug : Must be defined here :( 00055 void setOnReply( T* pItem, void (T::*pMethod)(NetDnsReply) ) 00056 { 00057 m_pCbItem = (CDummy*) pItem; 00058 m_pCbMeth = (void (CDummy::*)(NetDnsReply)) pMethod; 00059 } 00060 00061 //Execute request & return OK if found, NOTFOUND or ERROR on error, or PROCESSING if the request has not completed yet 00062 // virtual DnsErr pollState() = 0; 00063 virtual void poll() = 0; //NetService fn 00064 00065 void getResult(IpAddr* pIp); 00066 00067 virtual void close(); 00068 00069 protected: 00070 void onReply(NetDnsReply reply); //Must be called by impl when the request completes 00071 00072 IpAddr m_ip; 00073 char* m_hostname; 00074 00075 private: 00076 CDummy* m_pCbItem; 00077 void (CDummy::*m_pCbMeth)(NetDnsReply); 00078 00079 Host* m_pHost; 00080 00081 bool m_closed; 00082 }; 00083 00084 #endif
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