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package http3
import (
"bytes"
"context"
"io"
"math"
"net/http"
"net/http/httptest"
"net/http/httptrace"
"strings"
"testing"
"time"
"github.com/quic-go/quic-go"
"github.com/quic-go/qpack"
"github.com/stretchr/testify/require"
"go.uber.org/mock/gomock"
)
func getDataFrame(data []byte) []byte {
b := (&dataFrame{Length: uint64(len(data))}).Append(nil)
return append(b, data...)
}
func TestStreamReadDataFrames(t *testing.T) {
var buf bytes.Buffer
mockCtrl := gomock.NewController(t)
qstr := NewMockDatagramStream(mockCtrl)
qstr.EXPECT().Write(gomock.Any()).DoAndReturn(buf.Write).AnyTimes()
qstr.EXPECT().Read(gomock.Any()).DoAndReturn(buf.Read).AnyTimes()
clientConn, _ := newConnPair(t)
str := newStream(
qstr,
newConnection(
clientConn.Context(),
clientConn,
false,
false, // client
nil,
0,
),
nil,
func(r io.Reader, u uint64) error { return nil },
)
buf.Write(getDataFrame([]byte("foobar")))
b := make([]byte, 3)
n, err := str.Read(b)
require.NoError(t, err)
require.Equal(t, 3, n)
require.Equal(t, []byte("foo"), b)
n, err = str.Read(b)
require.NoError(t, err)
require.Equal(t, 3, n)
require.Equal(t, []byte("bar"), b)
buf.Write(getDataFrame([]byte("baz")))
b = make([]byte, 10)
n, err = str.Read(b)
require.NoError(t, err)
require.Equal(t, 3, n)
require.Equal(t, []byte("baz"), b[:n])
buf.Write(getDataFrame([]byte("lorem")))
buf.Write(getDataFrame([]byte("ipsum")))
data, err := io.ReadAll(str)
require.NoError(t, err)
require.Equal(t, "loremipsum", string(data))
// invalid frame
buf.Write([]byte("invalid"))
_, err = str.Read([]byte{0})
require.Error(t, err)
}
func TestStreamInvalidFrame(t *testing.T) {
var buf bytes.Buffer
b := (&settingsFrame{}).Append(nil)
buf.Write(b)
mockCtrl := gomock.NewController(t)
qstr := NewMockDatagramStream(mockCtrl)
qstr.EXPECT().Write(gomock.Any()).DoAndReturn(buf.Write).AnyTimes()
qstr.EXPECT().Read(gomock.Any()).DoAndReturn(buf.Read).AnyTimes()
clientConn, serverConn := newConnPair(t)
str := newStream(
qstr,
newConnection(context.Background(), clientConn, false, false, nil, 0),
nil,
func(r io.Reader, u uint64) error { return nil },
)
_, err := str.Read([]byte{0})
require.ErrorContains(t, err, "peer sent an unexpected frame")
select {
case <-serverConn.Context().Done():
var appErr *quic.ApplicationError
require.ErrorAs(t, context.Cause(serverConn.Context()), &appErr)
require.Equal(t, quic.ApplicationErrorCode(ErrCodeFrameUnexpected), appErr.ErrorCode)
case <-time.After(time.Second):
t.Fatal("timeout")
}
}
func TestStreamWrite(t *testing.T) {
var buf bytes.Buffer
mockCtrl := gomock.NewController(t)
qstr := NewMockDatagramStream(mockCtrl)
qstr.EXPECT().Write(gomock.Any()).DoAndReturn(buf.Write).AnyTimes()
str := newStream(qstr, nil, nil, func(r io.Reader, u uint64) error { return nil })
str.Write([]byte("foo"))
str.Write([]byte("foobar"))
fp := frameParser{r: &buf}
f, err := fp.ParseNext()
require.NoError(t, err)
require.Equal(t, &dataFrame{Length: 3}, f)
b := make([]byte, 3)
_, err = io.ReadFull(&buf, b)
require.NoError(t, err)
require.Equal(t, []byte("foo"), b)
fp = frameParser{r: &buf}
f, err = fp.ParseNext()
require.NoError(t, err)
require.Equal(t, &dataFrame{Length: 6}, f)
b = make([]byte, 6)
_, err = io.ReadFull(&buf, b)
require.NoError(t, err)
require.Equal(t, []byte("foobar"), b)
}
func TestRequestStream(t *testing.T) {
mockCtrl := gomock.NewController(t)
qstr := NewMockDatagramStream(mockCtrl)
requestWriter := newRequestWriter()
clientConn, _ := newConnPair(t)
str := newRequestStream(
newStream(
qstr,
newConnection(context.Background(), clientConn, false, false, nil, 0),
&httptrace.ClientTrace{},
func(r io.Reader, u uint64) error { return nil },
),
requestWriter,
make(chan struct{}),
qpack.NewDecoder(func(qpack.HeaderField) {}),
true,
math.MaxUint64,
&http.Response{},
)
_, err := str.Read([]byte{0})
require.EqualError(t, err, "http3: invalid use of RequestStream.Read before ReadResponse")
_, err = str.Write([]byte{0})
require.EqualError(t, err, "http3: invalid use of RequestStream.Write before SendRequestHeader")
// calling ReadResponse before SendRequestHeader is not valid
_, err = str.ReadResponse()
require.EqualError(t, err, "http3: invalid duplicate use of RequestStream.ReadResponse before SendRequestHeader")
// SendRequestHeader can't be used for requests that have a request body
require.EqualError(t,
str.SendRequestHeader(
httptest.NewRequest(http.MethodGet, "https://quic-go.net", strings.NewReader("foobar")),
),
"http3: invalid use of RequestStream.SendRequestHeader with a request that has a request body",
)
req := httptest.NewRequest(http.MethodGet, "https://quic-go.net", nil)
qstr.EXPECT().Write(gomock.Any()).AnyTimes()
require.NoError(t, str.SendRequestHeader(req))
// duplicate calls are not allowed
require.EqualError(t, str.SendRequestHeader(req), "http3: invalid duplicate use of RequestStream.SendRequestHeader")
buf := bytes.NewBuffer(encodeResponse(t, 200))
buf.Write((&dataFrame{Length: 6}).Append(nil))
buf.Write([]byte("foobar"))
qstr.EXPECT().Read(gomock.Any()).DoAndReturn(buf.Read).AnyTimes()
rsp, err := str.ReadResponse()
require.NoError(t, err)
require.Equal(t, http.StatusOK, rsp.StatusCode)
b := make([]byte, 10)
n, err := str.Read(b)
require.NoError(t, err)
require.Equal(t, 6, n)
require.Equal(t, []byte("foobar"), b[:n])
}
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