diff options
Diffstat (limited to 'vendor/golang.org/x/crypto/acme/rfc8555.go')
| -rw-r--r-- | vendor/golang.org/x/crypto/acme/rfc8555.go | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/vendor/golang.org/x/crypto/acme/rfc8555.go b/vendor/golang.org/x/crypto/acme/rfc8555.go index 073cee58..f9d3011f 100644 --- a/vendor/golang.org/x/crypto/acme/rfc8555.go +++ b/vendor/golang.org/x/crypto/acme/rfc8555.go @@ -410,3 +410,29 @@ func isAlreadyRevoked(err error) bool { e, ok := err.(*Error) return ok && e.ProblemType == "urn:ietf:params:acme:error:alreadyRevoked" } + +// ListCertAlternates retrieves any alternate certificate chain URLs for the +// given certificate chain URL. These alternate URLs can be passed to FetchCert +// in order to retrieve the alternate certificate chains. +// +// If there are no alternate issuer certificate chains, a nil slice will be +// returned. +func (c *Client) ListCertAlternates(ctx context.Context, url string) ([]string, error) { + if _, err := c.Discover(ctx); err != nil { // required by c.accountKID + return nil, err + } + + res, err := c.postAsGet(ctx, url, wantStatus(http.StatusOK)) + if err != nil { + return nil, err + } + defer res.Body.Close() + + // We don't need the body but we need to discard it so we don't end up + // preventing keep-alive + if _, err := io.Copy(ioutil.Discard, res.Body); err != nil { + return nil, fmt.Errorf("acme: cert alternates response stream: %v", err) + } + alts := linkHeader(res.Header, "alternate") + return alts, nil +} |