net/http: fix documentation on Server.TLSNextProto controlling http2

Server.TLSNextProto being nil is necessary but not sufficient but
http2 being automatically enabled.

Fixes #16588

Change-Id: I5b18690582f9b12ef05b58235e1eaa52483be285
Reviewed-on: https://go-review.googlesource.com/33090
Reviewed-by: Ian Lance Taylor <iant@golang.org>

diff --git a/src/net/http/server.go b/src/net/http/server.go
index d78fd71a8dfc358e13fdbd6d4c3b2bad7c1fa713..120cd7bdf727e9e5892fef2d4aee3cf3cf5dc41d 100644 (file)
--- a/src/net/http/server.go
+++ b/src/net/http/server.go
@@ -2308,7 +2308,8 @@ type Server struct {
        // handle HTTP requests and will initialize the Request's TLS
        // and RemoteAddr if not already set. The connection is
        // automatically closed when the function returns.
-       // If TLSNextProto is nil, HTTP/2 support is enabled automatically.
+       // If TLSNextProto is not nil, HTTP/2 support is not enabled
+       // automatically.
        TLSNextProto map[string]func(*Server, *tls.Conn, Handler)
 
        // ConnState specifies an optional callback function that is