Rod Coleman / NetServSB2

Netservices modded to read fragmented HTTP respsonse/payload from special purpose server - 180 bytes only

api/DNSRequest.h@0:850eacf3e945, 2011-09-08 (annotated)

Committer:
RodColeman
Date:
Thu Sep 08 10:48:09 2011 +0000
Revision:
0:850eacf3e945
revised fixed length to 178 bytes

Who changed what in which revision?

UserRevisionLine numberNew contents of line
RodColeman 0:850eacf3e945 1
RodColeman 0:850eacf3e945 2 /*
RodColeman 0:850eacf3e945 3 Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
RodColeman 0:850eacf3e945 4
RodColeman 0:850eacf3e945 5 Permission is hereby granted, free of charge, to any person obtaining a copy
RodColeman 0:850eacf3e945 6 of this software and associated documentation files (the "Software"), to deal
RodColeman 0:850eacf3e945 7 in the Software without restriction, including without limitation the rights
RodColeman 0:850eacf3e945 8 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
RodColeman 0:850eacf3e945 9 copies of the Software, and to permit persons to whom the Software is
RodColeman 0:850eacf3e945 10 furnished to do so, subject to the following conditions:
RodColeman 0:850eacf3e945 11
RodColeman 0:850eacf3e945 12 The above copyright notice and this permission notice shall be included in
RodColeman 0:850eacf3e945 13 all copies or substantial portions of the Software.
RodColeman 0:850eacf3e945 14
RodColeman 0:850eacf3e945 15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
RodColeman 0:850eacf3e945 16 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
RodColeman 0:850eacf3e945 17 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
RodColeman 0:850eacf3e945 18 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
RodColeman 0:850eacf3e945 19 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
RodColeman 0:850eacf3e945 20 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
RodColeman 0:850eacf3e945 21 THE SOFTWARE.
RodColeman 0:850eacf3e945 22 */
RodColeman 0:850eacf3e945 23
RodColeman 0:850eacf3e945 24 /** \file
RodColeman 0:850eacf3e945 25 DNS Request header file
RodColeman 0:850eacf3e945 26 */
RodColeman 0:850eacf3e945 27
RodColeman 0:850eacf3e945 28 #ifndef DNSREQUEST_H
RodColeman 0:850eacf3e945 29 #define DNSREQUEST_H
RodColeman 0:850eacf3e945 30
RodColeman 0:850eacf3e945 31 #include "core/net.h"
RodColeman 0:850eacf3e945 32 #include "core/ipaddr.h"
RodColeman 0:850eacf3e945 33 #include "core/host.h"
RodColeman 0:850eacf3e945 34 //Essentially it is a safe interface to NetDnsRequest
RodColeman 0:850eacf3e945 35
RodColeman 0:850eacf3e945 36 ///DNS Request error codes
RodColeman 0:850eacf3e945 37 enum DNSRequestErr
RodColeman 0:850eacf3e945 38 {
RodColeman 0:850eacf3e945 39 __DNS_MIN = -0xFFFF,
RodColeman 0:850eacf3e945 40 DNS_SETUP, ///<DNSRequest not properly configured
RodColeman 0:850eacf3e945 41 DNS_IF, ///<Interface has problems, does not exist or is not initialized
RodColeman 0:850eacf3e945 42 DNS_MEM, ///<Not enough mem
RodColeman 0:850eacf3e945 43 DNS_INUSE, ///<Interface / Port is in use
RodColeman 0:850eacf3e945 44 DNS_PROCESSING, ///<Request has not completed
RodColeman 0:850eacf3e945 45 //...
RodColeman 0:850eacf3e945 46 DNS_OK = 0 ///<Success
RodColeman 0:850eacf3e945 47 };
RodColeman 0:850eacf3e945 48
RodColeman 0:850eacf3e945 49 ///DNS Request Result Events
RodColeman 0:850eacf3e945 50 enum DNSReply
RodColeman 0:850eacf3e945 51 {
RodColeman 0:850eacf3e945 52 DNS_PRTCL,
RodColeman 0:850eacf3e945 53 DNS_NOTFOUND, ///Hostname is unknown
RodColeman 0:850eacf3e945 54 DNS_ERROR, ///Problem with DNS Service
RodColeman 0:850eacf3e945 55 //...
RodColeman 0:850eacf3e945 56 DNS_FOUND,
RodColeman 0:850eacf3e945 57 };
RodColeman 0:850eacf3e945 58
RodColeman 0:850eacf3e945 59 class NetDnsRequest;
RodColeman 0:850eacf3e945 60 enum NetDnsReply;
RodColeman 0:850eacf3e945 61
RodColeman 0:850eacf3e945 62 ///This is a simple DNS Request class
RodColeman 0:850eacf3e945 63 /**
RodColeman 0:850eacf3e945 64 This class exposes an API to deal with DNS Requests
RodColeman 0:850eacf3e945 65 */
RodColeman 0:850eacf3e945 66 class DNSRequest
RodColeman 0:850eacf3e945 67 {
RodColeman 0:850eacf3e945 68 public:
RodColeman 0:850eacf3e945 69 ///Creates a new request
RodColeman 0:850eacf3e945 70 DNSRequest();
RodColeman 0:850eacf3e945 71
RodColeman 0:850eacf3e945 72 ///Terminates and closes request
RodColeman 0:850eacf3e945 73 ~DNSRequest();
RodColeman 0:850eacf3e945 74
RodColeman 0:850eacf3e945 75 ///Resolves an hostname
RodColeman 0:850eacf3e945 76 /**
RodColeman 0:850eacf3e945 77 @param hostname : hostname to resolve
RodColeman 0:850eacf3e945 78 */
RodColeman 0:850eacf3e945 79 DNSRequestErr resolve(const char* hostname);
RodColeman 0:850eacf3e945 80
RodColeman 0:850eacf3e945 81 ///Resolves an hostname
RodColeman 0:850eacf3e945 82 /**
RodColeman 0:850eacf3e945 83 @param host : hostname to resolve, the result will be stored in the IpAddr field of this object
RodColeman 0:850eacf3e945 84 */
RodColeman 0:850eacf3e945 85 DNSRequestErr resolve(Host* pHost);
RodColeman 0:850eacf3e945 86
RodColeman 0:850eacf3e945 87 ///Setups callback
RodColeman 0:850eacf3e945 88 /**
RodColeman 0:850eacf3e945 89 The callback function will be called on result.
RodColeman 0:850eacf3e945 90 @param pMethod : callback function
RodColeman 0:850eacf3e945 91 */
RodColeman 0:850eacf3e945 92 void setOnReply( void (*pMethod)(DNSReply) );
RodColeman 0:850eacf3e945 93
RodColeman 0:850eacf3e945 94 class CDummy;
RodColeman 0:850eacf3e945 95 ///Setups callback
RodColeman 0:850eacf3e945 96 /**
RodColeman 0:850eacf3e945 97 The callback function will be called on result.
RodColeman 0:850eacf3e945 98 @param pItem : instance of class on which to execute the callback method
RodColeman 0:850eacf3e945 99 @param pMethod : callback method
RodColeman 0:850eacf3e945 100 */
RodColeman 0:850eacf3e945 101 template<class T>
RodColeman 0:850eacf3e945 102 void setOnReply( T* pItem, void (T::*pMethod)(DNSReply) )
RodColeman 0:850eacf3e945 103 {
RodColeman 0:850eacf3e945 104 m_pCbItem = (CDummy*) pItem;
RodColeman 0:850eacf3e945 105 m_pCbMeth = (void (CDummy::*)(DNSReply)) pMethod;
RodColeman 0:850eacf3e945 106 }
RodColeman 0:850eacf3e945 107
RodColeman 0:850eacf3e945 108 ///Gets IP address once it has been resolved
RodColeman 0:850eacf3e945 109 /**
RodColeman 0:850eacf3e945 110 @param pIp : pointer to an IpAddr instance in which to store the resolved IP address
RodColeman 0:850eacf3e945 111 */
RodColeman 0:850eacf3e945 112 DNSRequestErr getResult(IpAddr* pIp);
RodColeman 0:850eacf3e945 113
RodColeman 0:850eacf3e945 114 ///Closes DNS Request before completion
RodColeman 0:850eacf3e945 115 DNSRequestErr close();
RodColeman 0:850eacf3e945 116
RodColeman 0:850eacf3e945 117 protected:
RodColeman 0:850eacf3e945 118 void onNetDnsReply(NetDnsReply r);
RodColeman 0:850eacf3e945 119 DNSRequestErr checkInst();
RodColeman 0:850eacf3e945 120
RodColeman 0:850eacf3e945 121 private:
RodColeman 0:850eacf3e945 122 NetDnsRequest* m_pNetDnsRequest;
RodColeman 0:850eacf3e945 123
RodColeman 0:850eacf3e945 124 CDummy* m_pCbItem;
RodColeman 0:850eacf3e945 125 void (CDummy::*m_pCbMeth)(DNSReply);
RodColeman 0:850eacf3e945 126
RodColeman 0:850eacf3e945 127 void (*m_pCb)(DNSReply);
RodColeman 0:850eacf3e945 128
RodColeman 0:850eacf3e945 129 };
RodColeman 0:850eacf3e945 130
RodColeman 0:850eacf3e945 131 #endif