Rust Requires Chilkat v9.5.0.96+

DNS Query A Records

See more DNS Examples

Shows how to perform a DNS query to retrieve A records. Rust

let dns = chilkat::Dns::new();

let json = chilkat::JsonObject::new();
json.set_emit_compact(false);

if dns.query("A", "microsoft.com", &json).is_err() {
    println!("{}", dns.last_error_text());
    return;
}

println!("{}", json.emit().unwrap_or_default());

// Sample response.
// Parsing code below..

// {
//   "answer": {
//     "a": [
//       {
//         "name": "microsoft.com",
//         "ttl": 1528,
//         "ipv4": "20.112.250.133"
//       },
//       {
//         "name": "microsoft.com",
//         "ttl": 1528,
//         "ipv4": "20.231.239.246"
//       },
//       {
//         "name": "microsoft.com",
//         "ttl": 1528,
//         "ipv4": "20.76.201.171"
//       },
//       {
//         "name": "microsoft.com",
//         "ttl": 1528,
//         "ipv4": "20.70.246.20"
//       },
//       {
//         "name": "microsoft.com",
//         "ttl": 1528,
//         "ipv4": "20.236.44.162"
//       }
//     ]
//   }
// }

// Use this online tool to generate parsing code from sample JSON: 
// Generate Parsing Code from JSON

let mut i = 0;
let count_i = json.size_of_array("answer.a");
while i < count_i {
    json.set_i(i);
    let _ = json.string_of("answer.a[i].name").unwrap_or_default();
    let _ = json.int_of("answer.a[i].ttl");
    let _ = json.string_of("answer.a[i].ipv4").unwrap_or_default();
    i = i + 1;
}