51 lines
1.1 KiB
Go
51 lines
1.1 KiB
Go
package resolver
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import (
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"testing"
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"dns"
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"fmt"
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)
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func TestResolverEdns(t *testing.T) {
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res := new(Resolver)
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ch := res.NewQuerier()
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res.Servers = []string{"127.0.0.1"}
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res.Timeout = 2
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res.Attempts = 1
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m := new(dns.Msg)
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m.MsgHdr.RecursionDesired = true //only set this bit
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m.Question = make([]dns.Question, 1)
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m.Extra = make([]dns.RR, 1)
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// Add EDNS rr
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edns := new(dns.RR_OPT)
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edns.Hdr.Name = "." // must . be for edns
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edns.Hdr.Rrtype = dns.TypeOPT
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// You can handle an OTP RR as any other, but there
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// are some convience functions
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edns.SetUDPSize(4096)
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edns.SetDo()
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edns.Option = make([]dns.Option, 1)
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edns.SetNsidToHex("") // Empty to request it
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// ask something
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m.Question[0] = dns.Question{"miek.nl", dns.TypeA, dns.ClassINET}
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m.Extra[0] = edns
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ch <- DnsMsg{m, nil}
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in := <-ch
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if in.Dns != nil {
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if in.Dns.Rcode != dns.RcodeSuccess {
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t.Log("Failed to get an valid answer")
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t.Fail()
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}
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fmt.Printf("%v\n", in.Dns)
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} else {
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fmt.Printf("Failed to get a good anwer")
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}
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ch <- DnsMsg{nil, nil}
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<-ch // wait for ch to close channel
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}
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