Retryable dns resolver

Based on miekg/dns and freely inspired by bogdanovich/dns_resolver.

Features

• Supports system default resolvers along with user supplied ones
• Retries dns requests in case of I/O/Time/Network failures
• Allows arbitrary query types
• Resolution with random resolvers

Using go get

$ go get github.com/projectdiscovery/retryabledns

After this command retryabledns library source will be in your $GOPATH

Example

Usage Example:

package main

import (
    "log"
    dns "github.com/projectdiscovery/retryabledns"
)

func main() {
    // it requires a list of resolvers
    resolvers := []string{"8.8.8.8", "8.8.4.4"}
    retries := 2
    hostname := "hackerone.com"
    dnsClient := dns.New(resolvers, retries)

    ips, err := dnsClient.Resolve(hostname)
    if err != nil {
        log.Fatal(err)
    }

    log.Println(ips)

    // Query Types: dns.TypeA, dns.TypeNS, dns.TypeCNAME, dns.TypeSOA, dns.TypePTR, dns.TypeMX
    // dns.TypeTXT, dns.TypeAAAA (from github.com/miekg/dns)
    dnsResponses, err := dnsClient.ResolveRaw(hostname, dns.TypeA)
    if err != nil {
        log.Fatal(err)
    }

    log.Println(dnsResponses)
}