func (t *transferReader) protoAtLeast(m, n int) bool {
	return t.ProtoMajor > m || (t.ProtoMajor == m && t.ProtoMinor >= n)
}

// bodyAllowedForStatus reports whether a given response status code
// permits a body. See RFC 7230, section 3.3.
func bodyAllowedForStatus(status int) bool {
	switch {
	case status >= 100 && status <= 199:
		return false
	case status == 204:
		return false
	case status == 304:
		return false
	}

		}
	}
}

// noValidation is a no-op validation func for readContinuedLineSlice
// that permits any lines.
func noValidation(_ []byte) error { return nil }

// mustHaveFieldNameColon ensures that, per RFC 7230, the
// field-name is on a single line, so the first line must
// contain a colon.
func mustHaveFieldNameColon(line []byte) error {
	if bytes.IndexByte(line, ':') < 0 {

func removeHopByHopHeaders(h http.Header) {
	// RFC 7230, section 6.1: Remove headers listed in the "Connection" header.
	for _, f := range h["Connection"] {
		for _, sf := range strings.Split(f, ",") {
			if sf = textproto.TrimString(sf); sf != "" {
				h.Del(sf)
			}
		}
	}
	// RFC 2616, section 13.5.1: Remove a set of known hop-by-hop headers.
	// This behavior is superseded by the RFC 7230 Connection header, but

	a[701] = 0
	a[702] = 0
	a[703] = 0
	a[704] = 0
	a[705] = 0
	a[706] = 0
	a[707] = 0
	a[708] = 0
	a[709] = 0
	a[710] = 0
	a[711] = 0
	a[712] = 0
	a[713] = 0
	a[714] = 0
	a[715] = 0
	a[716] = 0
	a[717] = 0
	a[718] = 0
	a[719] = 0
	a[720] = 0
	a[721] = 0
	a[722] = 0
	a[723] = 0
	a[724] = 0
	a[725] = 0
	a[726] = 0
	a[727] = 0
	a[728] = 0

			Host:          "test",
			RequestURI:    "//user@host/is/actually/a/path/",
		},

		noBodyStr,
		noTrailer,
		noError,
	},

	// Tests a bogus absolute-path on the Request-Line (RFC 7230 section 5.3.1)
	{
		"GET ../../../../etc/passwd HTTP/1.1\r\n" +
			"Host: test\r\n\r\n",
		nil,
		noBodyStr,
		noTrailer,
		`parse "../../../../etc/passwd": invalid URI for request`,
	},

				"Content-Length": {"0"},
			},
			Close:         false,
			ContentLength: 0,
		},

		"",
	},

	// Status line without a Reason-Phrase, but trailing space.
	// (permitted by RFC 7230, section 3.1.2)
	{
		"HTTP/1.0 303 \r\n\r\n",
		Response{
			Status:        "303 ",
			StatusCode:    303,
			Proto:         "HTTP/1.0",
			ProtoMajor:    1,
			ProtoMinor:    0,

	ProtoMajor int    // e.g. 1
	ProtoMinor int    // e.g. 0

	// Header maps header keys to values. If the response had multiple
	// headers with the same key, they may be concatenated, with comma
	// delimiters.  (RFC 7230, section 3.2.2 requires that multiple headers
	// be semantically equivalent to a comma-delimited sequence.) When
	// Header values are duplicated by other fields in this struct (e.g.,

	wantCode int
	wantMsg  string
}

var readResponseTests = []readResponseTest{
	{"230-Anonymous access granted, restrictions apply\n" +
		"Read the file README.txt,\n" +
		"230  please",
		23,
		230,
		"Anonymous access granted, restrictions apply\nRead the file README.txt,\n please",
	},

	{"230 Anonymous access granted, restrictions apply\n",
		23,
		230,

00000080  98 0a 6d 5b fd c6 0c ad  02 7f 0c f8 b4 be fe 5a  |..m[...........Z|
00000090  fb 22 00 08 09 5d c7 47  76 89 e5 06 d1 90 5b e6  |."...].Gv.....[.|
000000a0  63 64 06 28 37 d9 1b e9  0d 27 45 f7 72 30 d7 f2  |cd.(7....'E.r0..|
000000b0  db 8e bf 95 97 29 43 e7  16 bf a0 59 9c fa d9 59  |.....)C....Y...Y|
000000c0  a0 a6 9b 1f b5 74 80 87  d0 61 2f d5 a5 ac dd b2  |.....t...a/.....|

	}, nil
}

// readHeader reads the message headers from r.
// This is like textproto.ReadMIMEHeader, but doesn't validate.
// The fix for issue #53188 tightened up net/textproto to enforce
// restrictions of RFC 7230.
// This package implements RFC 5322, which does not have those restrictions.
// This function copies the relevant code from net/textproto,
// simplified for RFC 5322.