Ignore error in QueryMultiple

[zt2]

I found the error that occurred in the QueryMultiple retry loop will return to the caller:

// QueryMultiple sends a provided dns request and return the data
func (c *Client) QueryMultiple(host string, requestTypes []uint16) (*DNSData, error) {
	// ... ...

	for _, requestType := range requestTypes {
		// ... ...

		for i := 0; i < c.maxRetries; i++ {
			resolver := c.resolvers[rand.Intn(len(c.resolvers))]
			var resp *dns.Msg
			resp, err = dns.Exchange(&msg, resolver)
			if err != nil {
                                 // This error will be returned if current request is the last request
				continue
			}

			dnsdata.Host = host
			dnsdata.Raw += resp.String()
			dnsdata.StatusCode = dns.RcodeToString[resp.Rcode]
			dnsdata.Resolver = append(dnsdata.Resolver, resolver)

			// In case we got some error from the server, return.
			if resp != nil && resp.Rcode != dns.RcodeSuccess {
				break
			}

			dnsdata.ParseFromMsg(resp)
			break
		}
	}

	dnsdata.dedupe()

        // return to the caller
	return &dnsdata, err

This behavior means QueryMultiple will fail just because the last DNS request got a network problem, even all DNS requests before the last one succeed.
And so dnsx will return nothing if give multiple DNS requests to dnsx:

// Try more time
echo github.com | dnsx -mx -a -cname -aaaa -ns -soa -json

[Mzack9999]

The problem is within dnsx at https://github.com/projectdiscovery/dnsx/blob/cf9498dfb27e0e6cb36b76a26bed506baf872b53/internal/runner/runner.go#L308

[Mzack9999]

Closing as the issue is addressed in dnsx at projectdiscovery/dnsx#33 . Let us know if you still face problems, thanks!