net/http: add more docs on ErrHijacked

Updates #16456

Change-Id: Ifea651ea3ece2267a6f0c1638181d6ddd9248a9f
Reviewed-on: https://go-review.googlesource.com/31181
Reviewed-by: Ian Lance Taylor <iant@golang.org>

diff --git a/src/net/http/server.go b/src/net/http/server.go
index d71006441eb766fdccd9ab80b68d909d836a5891..f102488310a202d51a91c3d1246af0b79231f85c 100644 (file)
--- a/src/net/http/server.go
+++ b/src/net/http/server.go
@@ -40,7 +40,9 @@ var (
 
        // ErrHijacked is returned by ResponseWriter.Write calls when
        // the underlying connection has been hijacked using the
-       // Hijacker interfaced.
+       // Hijacker interface. A zero-byte write on a hijacked
+       // connection will return ErrHijacked without any other side
+       // effects.
        ErrHijacked = errors.New("http: connection has been hijacked")
 
        // ErrContentLength is returned by ResponseWriter.Write calls