77 lines
1.6 KiB
Go
77 lines
1.6 KiB
Go
package method
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import (
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"edns_svcb/utils"
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"fmt"
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"log"
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"sync"
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"github.com/miekg/dns"
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)
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type TestResult struct {
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Alive bool
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Support bool
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Err error
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}
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func EDNSSupportMeasurement(ip_pool chan string, result_pool chan TestResult, routine_num int, wg *sync.WaitGroup, logger *log.Logger) {
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for i := 0; i < routine_num; i++ {
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wg.Add(1)
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go EDNSSupportTestRoutine(ip_pool, result_pool, wg, logger)
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}
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}
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func EDNSSupportTestRoutine(ip_pool chan string, result_pool chan TestResult, wg *sync.WaitGroup, logger *log.Logger) {
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for {
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if ip, ok := <-ip_pool; ok {
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addr := ip + ":53"
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res := EDNSSupportTest(addr)
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result_pool <- res
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if res.Err != nil {
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logger.Printf("%v : failed ( %v )", ip, res.Err)
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} else {
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logger.Printf("%v : alive %v support %v", ip, res.Alive, res.Support)
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}
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} else {
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break
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}
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}
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wg.Done()
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}
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func EDNSSupportTest(addr string) TestResult {
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_, err := utils.DNSQuery(addr, utils.DNSOptions{Domain: "www.example.net", RD: true})
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if err != nil {
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return TestResult{Err: err}
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}
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res, err := utils.DNSQuery(addr, utils.DNSOptions{Domain: "www.example.net", EDNS: true, RD: true})
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if err == nil {
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if len(res.Extra) == 1 {
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if _, ok := res.Extra[0].(*dns.OPT); ok {
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return TestResult{Alive: true, Support: true}
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}
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}
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}
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return TestResult{Alive: true}
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}
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func EDNSSupportResultProcess(result_pool chan TestResult, wg *sync.WaitGroup) {
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alive_cnt := 0
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valid_cnt := 0
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for {
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if res, ok := <-result_pool; ok {
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if res.Alive {
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alive_cnt++
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}
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if res.Support {
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valid_cnt++
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}
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} else {
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break
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}
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}
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fmt.Printf("EDNS support Test: alive %v support %v\n", alive_cnt, valid_cnt)
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wg.Done()
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}
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