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-rw-r--r--src/net/http/request.go3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/net/http/request.go b/src/net/http/request.go
index 5251ebea66..aca55b1ca7 100644
--- a/src/net/http/request.go
+++ b/src/net/http/request.go
@@ -779,7 +779,8 @@ func removeZone(host string) string {
}
// ParseHTTPVersion parses an HTTP version string.
-// "HTTP/1.0" returns (1, 0, true).
+// "HTTP/1.0" returns (1, 0, true). Note that strings without
+// a minor version, such as "HTTP/2", are not valid.
func ParseHTTPVersion(vers string) (major, minor int, ok bool) {
const Big = 1000000 // arbitrary upper bound
switch vers {