net/http: make Transport.roundTrip close body on invalid method

Updates #35015

Change-Id: Ibfe8f72ed3887ca88ce9c1d8a29dacda72f3fe17
GitHub-Last-Rev: 4bfc56e71660ad9624ac5eb594b3afd0d221c99d
GitHub-Pull-Request: golang/go#35014
Reviewed-on: https://go-review.googlesource.com/c/go/+/202237
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
Run-TryBot: Emmanuel Odeke <emm.odeke@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>

1 files changed, 29 insertions, 0 deletions

diff --git a/src/net/http/transport_test.go b/src/net/http/transport_test.go
index d7eef0d94c..0fe1283d97 100644
--- a/src/net/http/transport_test.go
+++ b/src/net/http/transport_test.go
@@ -5719,3 +5719,32 @@ func TestInvalidHeaderResponse(t *testing.T) {
 		t.Errorf(`bad "Foo " header value: %q, want %q`, v, "bar")
 	}
 }
+
+type bodyCloser bool
+
+func (bc *bodyCloser) Close() error {
+	*bc = true
+	return nil
+}
+func (bc *bodyCloser) Read(b []byte) (n int, err error) {
+	return 0, io.EOF
+}
+
+func TestInvalidMethodClosesBody(t *testing.T) {
+	cst := httptest.NewServer(HandlerFunc(func(w ResponseWriter, r *Request) {}))
+	defer cst.Close()
+	var bc bodyCloser
+	u, _ := url.Parse(cst.URL)
+	req := &Request{
+		Method: " ",
+		URL:    u,
+		Body:   &bc,
+	}
+	_, err := DefaultClient.Do(req)
+	if err == nil {
+		t.Fatal("Expected an error")
+	}
+	if !bc {
+		t.Fatal("Expected body to have been closed")
+	}
+}