mirror of
https://github.com/safing/portmaster
synced 2025-09-02 02:29:12 +00:00
97 lines
2.1 KiB
Go
97 lines
2.1 KiB
Go
package main
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import (
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"flag"
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"fmt"
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"net/http"
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"os"
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"time"
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"github.com/miekg/dns"
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"github.com/safing/portmaster/base/log"
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)
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const dnsResolver = "1.1.1.1:53"
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var (
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url string
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lookup string
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n int
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waitMsec int
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)
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func init() {
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flag.StringVar(&url, "url", "", "send HTTP HEAD requests to this url")
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flag.StringVar(&lookup, "lookup", "", fmt.Sprintf("query %s for this domains", dnsResolver))
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flag.IntVar(&n, "n", 10, "how many requests to make")
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flag.IntVar(&waitMsec, "w", 100, "how many ms to wait between requests")
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}
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func main() {
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// Parse flags
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flag.Parse()
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if url == "" && lookup == "" {
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flag.Usage()
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os.Exit(1)
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}
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// Start logging.
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err := log.Start("trace", true, "")
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if err != nil {
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fmt.Printf("failed to start logging: %s\n", err)
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os.Exit(1)
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}
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defer log.Shutdown()
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log.Info("starting traffic generator")
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// Execute requests
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waitDuration := time.Duration(waitMsec) * time.Millisecond
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for i := 1; i <= n; i++ {
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makeHTTPRequest(i)
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lookupDomain(i)
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time.Sleep(waitDuration)
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}
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}
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func makeHTTPRequest(i int) {
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if url == "" {
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return
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}
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// Create a new client so that the connection won't be shared with other requests.
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client := http.Client{
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CheckRedirect: func(*http.Request, []*http.Request) error { return http.ErrUseLastResponse },
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}
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start := time.Now()
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resp, err := client.Head(url)
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if err != nil {
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log.Errorf("http request #%d failed after %s: %s", i, time.Since(start).Round(time.Millisecond), err)
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return
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}
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defer func() {
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_ = resp.Body.Close()
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}()
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log.Infof("http response #%d after %s: %d", i, time.Since(start).Round(time.Millisecond), resp.StatusCode)
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}
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func lookupDomain(i int) {
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if lookup == "" {
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return
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}
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// Create DNS query.
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dnsQuery := new(dns.Msg)
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dnsQuery.SetQuestion(dns.Fqdn(lookup), dns.TypeA)
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// Send request.
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start := time.Now()
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reply, err := dns.Exchange(dnsQuery, dnsResolver)
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if err != nil {
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log.Errorf("dns request #%d failed after %s: %s", i, time.Since(start).Round(time.Millisecond), err)
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return
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}
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log.Infof("dns response #%d after %s: %s", i, time.Since(start).Round(time.Millisecond), dns.RcodeToString[reply.Rcode])
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}
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