cf6dbe48e0
This commit changes our system resolver to call getaddrinfo directly when CGO is enabled. This change allows us to: 1. obtain the CNAME easily 2. obtain the real getaddrinfo retval 3. handle platform specific oddities such as `EAI_NODATA` returned on Android devices See https://github.com/ooni/probe/issues/2029 and https://github.com/ooni/probe/issues/2029#issuecomment-1140258729 in particular. See https://github.com/ooni/probe/issues/2033 for documentation regarding the desire to see `getaddrinfo`'s retval. See https://github.com/ooni/probe/issues/2118 for possible follow-up changes.
82 lines
1.7 KiB
Go
82 lines
1.7 KiB
Go
//go:build cgo && windows
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package netxlite
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import (
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"errors"
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"syscall"
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"testing"
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)
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func TestGetaddrinfoAIFlags(t *testing.T) {
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var wrong bool
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wrong = getaddrinfoAIFlags != aiCanonname
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if wrong {
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t.Fatal("wrong flags for platform")
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}
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}
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func TestGetaddrinfoStateToError(t *testing.T) {
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type args struct {
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code int64
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err error
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goos string
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}
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type expects struct {
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message string // message obtained using .Error
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code int64
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err error
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}
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var inputs = []struct {
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name string
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args args
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expects expects
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}{{
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name: "with nonzero return code and error",
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args: args{
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code: int64(WSAHOST_NOT_FOUND),
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err: syscall.EAGAIN,
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goos: "windows",
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},
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expects: expects{
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message: syscall.EAGAIN.Error(),
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code: int64(WSAHOST_NOT_FOUND),
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err: syscall.EAGAIN,
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},
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}, {
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name: "with return code and nil error",
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args: args{
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code: int64(WSAHOST_NOT_FOUND),
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err: nil,
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goos: "windows",
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},
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expects: expects{
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message: WSAHOST_NOT_FOUND.Error(),
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code: int64(WSAHOST_NOT_FOUND),
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err: WSAHOST_NOT_FOUND,
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},
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}}
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for _, input := range inputs {
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t.Run(input.name, func(t *testing.T) {
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state := newGetaddrinfoState(getaddrinfoNumSlots)
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err := state.toError(input.args.code, input.args.err, input.args.goos)
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if err == nil {
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t.Fatal("expected non-nil error here")
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}
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if err.Error() != input.expects.message {
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t.Fatal("unexpected error message")
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}
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var gaierr *ErrGetaddrinfo
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if !errors.As(err, &gaierr) {
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t.Fatal("cannot convert error to ErrGetaddrinfo")
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}
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if gaierr.Code != input.expects.code {
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t.Fatal("unexpected code")
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}
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if !errors.Is(gaierr.Underlying, input.expects.err) {
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t.Fatal("unexpected underlying error")
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}
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})
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}
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}
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