acme/autocert: expand tls-alpn-01 docs
Change-Id: Ia2fe53e6c85ffe4859248e50ab0e489a3b783ef5
Reviewed-on: https://go-review.googlesource.com/126607
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
diff --git a/acme/acme.go b/acme/acme.go
index ece9113..7df6476 100644
--- a/acme/acme.go
+++ b/acme/acme.go
@@ -46,8 +46,9 @@
// ALPNProto is the ALPN protocol name used by a CA server when validating
// tls-alpn-01 challenges.
//
- // Package users must ensure their servers can negotiate the ACME ALPN
- // in order for tls-alpn-01 challenge verifications to succeed.
+ // Package users must ensure their servers can negotiate the ACME ALPN in
+ // order for tls-alpn-01 challenge verifications to succeed.
+ // See the crypto/tls package's Config.NextProtos field.
ALPNProto = "acme-tls/1"
)
