mirror of
https://github.com/coredns/coredns.git
synced 2026-07-10 17:50:12 -04:00
109 lines
3.0 KiB
Go
109 lines
3.0 KiB
Go
package proxy
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import (
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"context"
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"net/http"
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"net/http/httptest"
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"testing"
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"time"
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"github.com/coredns/coredns/plugin/pkg/doh"
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"github.com/coredns/coredns/plugin/pkg/transport"
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"github.com/coredns/coredns/plugin/test"
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"github.com/coredns/coredns/request"
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"github.com/miekg/dns"
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)
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const (
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testMsgExpectedError = "expected error"
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testMsgUnexpectedNilError = "unexpected nil error"
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testMsgWrongError = "wrong error message"
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)
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// TestDial_TransportStopped_InitialCheck tests that Dial returns ErrTransportStopped
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// if the transport is stopped before Dial is called.
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func TestDial_TransportStopped_InitialCheck(t *testing.T) {
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tr := newTransport("test_initial_stop", "127.0.0.1:0")
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tr.Start()
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tr.Stop()
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time.Sleep(50 * time.Millisecond) // Ensure connManager processes stop and exits
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_, _, err := tr.Dial("udp")
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if err == nil {
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t.Fatalf("%s: %s", testMsgExpectedError, testMsgUnexpectedNilError)
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}
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if err.Error() != ErrTransportStopped {
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t.Errorf("%s: got '%v', want '%s'", testMsgWrongError, err, ErrTransportStopped)
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}
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}
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// TestDial_MultipleCallsAfterStop tests that multiple Dial calls after Stop
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// consistently return ErrTransportStopped.
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func TestDial_MultipleCallsAfterStop(t *testing.T) {
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tr := newTransport("test_multiple_after_stop", "127.0.0.1:0")
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tr.Start()
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tr.Stop()
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time.Sleep(50 * time.Millisecond)
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for i := range 3 {
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_, _, err := tr.Dial("udp")
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if err == nil {
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t.Errorf("Attempt %d: %s: %s", i+1, testMsgExpectedError, testMsgUnexpectedNilError)
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continue
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}
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if err.Error() != ErrTransportStopped {
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t.Errorf("Attempt %d: %s: got '%v', want '%s'", i+1, testMsgWrongError, err, ErrTransportStopped)
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}
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}
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}
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// TestConnectHTTPSReportsTCP verifies that Connect reports the transport it
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// actually used to reach the upstream. For an HTTPS upstream that is always
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// "tcp", even when the downstream client connected over UDP.
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func TestConnectHTTPSReportsTCP(t *testing.T) {
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s := httptest.NewTLSServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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msg, err := doh.RequestToMsg(r)
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if err != nil {
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http.Error(w, err.Error(), http.StatusBadRequest)
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return
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}
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ret := new(dns.Msg)
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reply := ret.SetReply(msg)
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reply.Answer = append(reply.Answer, test.A("example.org. IN A 127.0.0.1"))
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buf, err := reply.Pack()
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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w.Header().Set("Content-Type", doh.MimeType)
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w.Write(buf)
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}))
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defer s.Close()
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p := NewProxy("TestConnectHTTPSReportsTCP", s.URL, transport.HTTPS)
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p.SetHTTPClient(s.Client())
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m := new(dns.Msg)
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m.SetQuestion("example.org.", dns.TypeA)
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// The downstream client connected over UDP.
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req := request.Request{W: &test.ResponseWriter{TCP: false}, Req: m}
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resp, _, proto, err := p.Connect(context.Background(), req, Options{})
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if err != nil {
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t.Fatalf("Connect failed: %v", err)
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}
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if resp == nil {
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t.Fatal("Expected response, got nil")
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}
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if proto != "tcp" {
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t.Errorf("HTTPS upstream with a UDP downstream client: expected reported proto %q, got %q", "tcp", proto)
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}
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}
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