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(Unicode C) DNS Query TXT RecordsSee more DNS ExamplesShows how to perform a DNS query to retrieve TXT records. Note: This example requires Chilkat v9.5.0.96 or later.
#include <C_CkDnsW.h> #include <C_CkJsonObjectW.h> void ChilkatSample(void) { HCkDnsW dns; HCkJsonObjectW json; BOOL success; const wchar_t *name; int ttl; const wchar_t *text; int i; int count_i; dns = CkDnsW_Create(); json = CkJsonObjectW_Create(); CkJsonObjectW_putEmitCompact(json,FALSE); success = CkDnsW_Query(dns,L"TXT",L"x.com",json); if (success == FALSE) { wprintf(L"%s\n",CkDnsW_lastErrorText(dns)); CkDnsW_Dispose(dns); CkJsonObjectW_Dispose(json); return; } wprintf(L"%s\n",CkJsonObjectW_emit(json)); // Sample response. // Parsing code below.. // { // "answer": { // "txt": [ // { // "name": "x.com", // "ttl": 300, // "text": "kkdl3qb3tcrmdhfsm803p67r0my0svs8" // }, // { // "name": "x.com", // "ttl": 300, // "text": "v=spf1 ip4:199.16.156.128/26 ip4:199.59.150.64/26 include:_spf.google.com include:spf-008d0a01.pphosted.com -all" // }, // { // "name": "x.com", // "ttl": 300, // "text": "google-site-verification=8yQmoVhQedzlt36RPeQP41ytrEFk9aHEnde_xm0626g" // }, // { // "name": "x.com", // "ttl": 300, // "text": "google-site-verification=F6u9mGL--d2lbLljvH3b1UUgXtevQPdcamKr9c8914A" // } // ] // } // } // Use this online tool to generate parsing code from sample JSON: // Generate Parsing Code from JSON i = 0; count_i = CkJsonObjectW_SizeOfArray(json,L"answer.txt"); while (i < count_i) { CkJsonObjectW_putI(json,i); name = CkJsonObjectW_stringOf(json,L"answer.txt[i].name"); ttl = CkJsonObjectW_IntOf(json,L"answer.txt[i].ttl"); text = CkJsonObjectW_stringOf(json,L"answer.txt[i].text"); i = i + 1; } CkDnsW_Dispose(dns); CkJsonObjectW_Dispose(json); } |
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