diff --git a/vendor/github.com/lucas-clemente/quic-go/ackhandler/interfaces.go b/vendor/github.com/lucas-clemente/quic-go/ackhandler/interfaces.go
index e100264a..ac14e201 100644
--- a/vendor/github.com/lucas-clemente/quic-go/ackhandler/interfaces.go
+++ b/vendor/github.com/lucas-clemente/quic-go/ackhandler/interfaces.go
@@ -25,7 +25,7 @@ type SentPacketHandler interface {
 // ReceivedPacketHandler handles ACKs needed to send for incoming packets
 type ReceivedPacketHandler interface {
 	ReceivedPacket(packetNumber protocol.PacketNumber, shouldInstigateAck bool) error
-	ReceivedStopWaiting(*frames.StopWaitingFrame) error
+	SetLowerLimit(protocol.PacketNumber)
 
 	GetAlarmTimeout() time.Time
 	GetAckFrame() *frames.AckFrame
diff --git a/vendor/github.com/lucas-clemente/quic-go/ackhandler/received_packet_handler.go b/vendor/github.com/lucas-clemente/quic-go/ackhandler/received_packet_handler.go
index c5e9dc29..0661fdc2 100644
--- a/vendor/github.com/lucas-clemente/quic-go/ackhandler/received_packet_handler.go
+++ b/vendor/github.com/lucas-clemente/quic-go/ackhandler/received_packet_handler.go
@@ -12,7 +12,7 @@ var errInvalidPacketNumber = errors.New("ReceivedPacketHandler: Invalid packet n
 
 type receivedPacketHandler struct {
 	largestObserved             protocol.PacketNumber
-	ignorePacketsBelow          protocol.PacketNumber
+	lowerLimit                  protocol.PacketNumber
 	largestObservedReceivedTime time.Time
 
 	packetHistory *receivedPacketHistory
@@ -39,31 +39,27 @@ func (h *receivedPacketHandler) ReceivedPacket(packetNumber protocol.PacketNumbe
 		return errInvalidPacketNumber
 	}
 
-	if packetNumber > h.ignorePacketsBelow {
-		if err := h.packetHistory.ReceivedPacket(packetNumber); err != nil {
-			return err
-		}
-	}
-
 	if packetNumber > h.largestObserved {
 		h.largestObserved = packetNumber
 		h.largestObservedReceivedTime = time.Now()
 	}
 
+	if packetNumber <= h.lowerLimit {
+		return nil
+	}
+
+	if err := h.packetHistory.ReceivedPacket(packetNumber); err != nil {
+		return err
+	}
 	h.maybeQueueAck(packetNumber, shouldInstigateAck)
 	return nil
 }
 
-func (h *receivedPacketHandler) ReceivedStopWaiting(f *frames.StopWaitingFrame) error {
-	// ignore if StopWaiting is unneeded, because we already received a StopWaiting with a higher LeastUnacked
-	if h.ignorePacketsBelow >= f.LeastUnacked {
-		return nil
-	}
-
-	h.ignorePacketsBelow = f.LeastUnacked - 1
-
-	h.packetHistory.DeleteBelow(f.LeastUnacked)
-	return nil
+// SetLowerLimit sets a lower limit for acking packets.
+// Packets with packet numbers smaller or equal than p will not be acked.
+func (h *receivedPacketHandler) SetLowerLimit(p protocol.PacketNumber) {
+	h.lowerLimit = p
+	h.packetHistory.DeleteUpTo(p)
 }
 
 func (h *receivedPacketHandler) maybeQueueAck(packetNumber protocol.PacketNumber, shouldInstigateAck bool) {
diff --git a/vendor/github.com/lucas-clemente/quic-go/ackhandler/received_packet_history.go b/vendor/github.com/lucas-clemente/quic-go/ackhandler/received_packet_history.go
index 791dec17..a17cae5e 100644
--- a/vendor/github.com/lucas-clemente/quic-go/ackhandler/received_packet_history.go
+++ b/vendor/github.com/lucas-clemente/quic-go/ackhandler/received_packet_history.go
@@ -7,6 +7,8 @@ import (
 	"github.com/lucas-clemente/quic-go/qerr"
 )
 
+// The receivedPacketHistory stores if a packet number has already been received.
+// It does not store packet contents.
 type receivedPacketHistory struct {
 	ranges *utils.PacketIntervalList
 
@@ -84,20 +86,20 @@ func (h *receivedPacketHistory) ReceivedPacket(p protocol.PacketNumber) error {
 	return nil
 }
 
-// DeleteBelow deletes all entries below the leastUnacked packet number
-func (h *receivedPacketHistory) DeleteBelow(leastUnacked protocol.PacketNumber) {
-	h.lowestInReceivedPacketNumbers = utils.MaxPacketNumber(h.lowestInReceivedPacketNumbers, leastUnacked)
+// DeleteUpTo deletes all entries up to (and including) p
+func (h *receivedPacketHistory) DeleteUpTo(p protocol.PacketNumber) {
+	h.lowestInReceivedPacketNumbers = utils.MaxPacketNumber(h.lowestInReceivedPacketNumbers, p+1)
 
 	nextEl := h.ranges.Front()
 	for el := h.ranges.Front(); nextEl != nil; el = nextEl {
 		nextEl = el.Next()
 
-		if leastUnacked > el.Value.Start && leastUnacked <= el.Value.End {
-			for i := el.Value.Start; i < leastUnacked; i++ { // adjust start value of a range
+		if p >= el.Value.Start && p < el.Value.End {
+			for i := el.Value.Start; i <= p; i++ { // adjust start value of a range
 				delete(h.receivedPacketNumbers, i)
 			}
-			el.Value.Start = leastUnacked
-		} else if el.Value.End < leastUnacked { // delete a whole range
+			el.Value.Start = p + 1
+		} else if el.Value.End <= p { // delete a whole range
 			for i := el.Value.Start; i <= el.Value.End; i++ {
 				delete(h.receivedPacketNumbers, i)
 			}
diff --git a/vendor/github.com/lucas-clemente/quic-go/frames/stop_waiting_frame.go b/vendor/github.com/lucas-clemente/quic-go/frames/stop_waiting_frame.go
index 91f937a8..5b54154c 100644
--- a/vendor/github.com/lucas-clemente/quic-go/frames/stop_waiting_frame.go
+++ b/vendor/github.com/lucas-clemente/quic-go/frames/stop_waiting_frame.go
@@ -81,7 +81,7 @@ func ParseStopWaitingFrame(r *bytes.Reader, packetNumber protocol.PacketNumber,
 		return nil, err
 	}
 
-	if leastUnackedDelta > uint64(packetNumber) {
+	if leastUnackedDelta >= uint64(packetNumber) {
 		return nil, qerr.Error(qerr.InvalidStopWaitingData, "invalid LeastUnackedDelta")
 	}
 
diff --git a/vendor/github.com/lucas-clemente/quic-go/frames/stream_frame.go b/vendor/github.com/lucas-clemente/quic-go/frames/stream_frame.go
index 7dd62235..f4a7bf73 100644
--- a/vendor/github.com/lucas-clemente/quic-go/frames/stream_frame.go
+++ b/vendor/github.com/lucas-clemente/quic-go/frames/stream_frame.go
@@ -3,6 +3,7 @@ package frames
 import (
 	"bytes"
 	"errors"
+	"io"
 
 	"github.com/lucas-clemente/quic-go/internal/utils"
 	"github.com/lucas-clemente/quic-go/protocol"
@@ -70,11 +71,7 @@ func ParseStreamFrame(r *bytes.Reader) (*StreamFrame, error) {
 	}
 	if dataLen != 0 {
 		frame.Data = make([]byte, dataLen)
-		n, err := r.Read(frame.Data)
-		if n != int(dataLen) {
-			return nil, errors.New("BUG: StreamFrame could not read dataLen bytes")
-		}
-		if err != nil {
+		if _, err := io.ReadFull(r, frame.Data); err != nil {
 			return nil, err
 		}
 	}
diff --git a/vendor/github.com/lucas-clemente/quic-go/handshake/crypto_setup_server.go b/vendor/github.com/lucas-clemente/quic-go/handshake/crypto_setup_server.go
index f639f514..35dd6f05 100644
--- a/vendor/github.com/lucas-clemente/quic-go/handshake/crypto_setup_server.go
+++ b/vendor/github.com/lucas-clemente/quic-go/handshake/crypto_setup_server.go
@@ -54,11 +54,15 @@ type cryptoSetupServer struct {
 
 var _ CryptoSetup = &cryptoSetupServer{}
 
-// ErrHOLExperiment is returned when the client sends the FHL2 tag in the CHLO
-// this is an expiremnt implemented by Chrome in QUIC 36, which we don't support
+// ErrHOLExperiment is returned when the client sends the FHL2 tag in the CHLO.
+// This is an experiment implemented by Chrome in QUIC 36, which we don't support.
 // TODO: remove this when dropping support for QUIC 36
 var ErrHOLExperiment = qerr.Error(qerr.InvalidCryptoMessageParameter, "HOL experiment. Unsupported")
 
+// ErrNSTPExperiment is returned when the client sends the NSTP tag in the CHLO.
+// This is an experiment implemented by Chrome in QUIC 38, which we don't support at this point.
+var ErrNSTPExperiment = qerr.Error(qerr.InvalidCryptoMessageParameter, "NSTP experiment. Unsupported")
+
 // NewCryptoSetup creates a new CryptoSetup instance for a server
 func NewCryptoSetup(
 	connID protocol.ConnectionID,
@@ -120,6 +124,9 @@ func (h *cryptoSetupServer) handleMessage(chloData []byte, cryptoData map[Tag][]
 	if _, isHOLExperiment := cryptoData[TagFHL2]; isHOLExperiment {
 		return false, ErrHOLExperiment
 	}
+	if _, isNSTPExperiment := cryptoData[TagNSTP]; isNSTPExperiment {
+		return false, ErrNSTPExperiment
+	}
 
 	sniSlice, ok := cryptoData[TagSNI]
 	if !ok {
diff --git a/vendor/github.com/lucas-clemente/quic-go/handshake/handshake_message.go b/vendor/github.com/lucas-clemente/quic-go/handshake/handshake_message.go
index 0744cbdc..87c8b1d4 100644
--- a/vendor/github.com/lucas-clemente/quic-go/handshake/handshake_message.go
+++ b/vendor/github.com/lucas-clemente/quic-go/handshake/handshake_message.go
@@ -87,7 +87,7 @@ func (h HandshakeMessage) Write(b *bytes.Buffer) {
 		v := data[Tag(t)]
 		b.Write(v)
 		offset += uint32(len(v))
-		binary.LittleEndian.PutUint32(indexData[i*8:], t)
+		binary.LittleEndian.PutUint32(indexData[i*8:], uint32(t))
 		binary.LittleEndian.PutUint32(indexData[i*8+4:], offset)
 	}
 
@@ -95,14 +95,16 @@ func (h HandshakeMessage) Write(b *bytes.Buffer) {
 	copy(b.Bytes()[indexStart:], indexData)
 }
 
-func (h *HandshakeMessage) getTagsSorted() []uint32 {
-	tags := make([]uint32, len(h.Data))
+func (h *HandshakeMessage) getTagsSorted() []Tag {
+	tags := make([]Tag, len(h.Data))
 	i := 0
 	for t := range h.Data {
-		tags[i] = uint32(t)
+		tags[i] = t
 		i++
 	}
-	sort.Sort(utils.Uint32Slice(tags))
+	sort.Slice(tags, func(i, j int) bool {
+		return tags[i] < tags[j]
+	})
 	return tags
 }
 
diff --git a/vendor/github.com/lucas-clemente/quic-go/handshake/tags.go b/vendor/github.com/lucas-clemente/quic-go/handshake/tags.go
index 2b3783f6..19ec78d3 100644
--- a/vendor/github.com/lucas-clemente/quic-go/handshake/tags.go
+++ b/vendor/github.com/lucas-clemente/quic-go/handshake/tags.go
@@ -54,6 +54,9 @@ const (
 	// Chrome experiment (see https://codereview.chromium.org/2115033002)
 	// unsupported by quic-go
 	TagFHL2 Tag = 'F' + 'H'<<8 + 'L'<<16 + '2'<<24
+	// TagNSTP is the no STOP_WAITING experiment
+	// currently unsupported by quic-go
+	TagNSTP Tag = 'N' + 'S'<<8 + 'T'<<16 + 'P'<<24
 
 	// TagSTK is the source-address token
 	TagSTK Tag = 'S' + 'T'<<8 + 'K'<<16
diff --git a/vendor/github.com/lucas-clemente/quic-go/integrationtests/chrome/chrome.go b/vendor/github.com/lucas-clemente/quic-go/integrationtests/chrome/chrome.go
new file mode 100644
index 00000000..7b442802
--- /dev/null
+++ b/vendor/github.com/lucas-clemente/quic-go/integrationtests/chrome/chrome.go
@@ -0,0 +1 @@
+package chrome
diff --git a/vendor/github.com/lucas-clemente/quic-go/integrationtests/data_manager.go b/vendor/github.com/lucas-clemente/quic-go/integrationtests/data_manager.go
deleted file mode 100644
index 627782a0..00000000
--- a/vendor/github.com/lucas-clemente/quic-go/integrationtests/data_manager.go
+++ /dev/null
@@ -1,32 +0,0 @@
-package integrationtests
-
-import (
-	"crypto/md5"
-	"math/rand"
-	"time"
-)
-
-type dataManager struct {
-	data []byte
-	md5  []byte
-}
-
-func (m *dataManager) GenerateData(len int) error {
-	m.data = make([]byte, len)
-	r := rand.New(rand.NewSource(int64(time.Now().Nanosecond())))
-	_, err := r.Read(m.data)
-	if err != nil {
-		return err
-	}
-	sum := md5.Sum(m.data)
-	m.md5 = sum[:]
-	return nil
-}
-
-func (m *dataManager) GetData() []byte {
-	return m.data
-}
-
-func (m *dataManager) GetMD5() []byte {
-	return m.md5
-}
diff --git a/vendor/github.com/lucas-clemente/quic-go/integrationtests/gquic/gquic.go b/vendor/github.com/lucas-clemente/quic-go/integrationtests/gquic/gquic.go
new file mode 100644
index 00000000..36ba02f3
--- /dev/null
+++ b/vendor/github.com/lucas-clemente/quic-go/integrationtests/gquic/gquic.go
@@ -0,0 +1 @@
+package gquic
diff --git a/vendor/github.com/lucas-clemente/quic-go/integrationtests/handshake/rtt.go b/vendor/github.com/lucas-clemente/quic-go/integrationtests/handshake/rtt.go
deleted file mode 100644
index d998caf5..00000000
--- a/vendor/github.com/lucas-clemente/quic-go/integrationtests/handshake/rtt.go
+++ /dev/null
@@ -1,133 +0,0 @@
-package handshaketests
-
-import (
-	"crypto/tls"
-	"fmt"
-	"net"
-	"time"
-
-	quic "github.com/lucas-clemente/quic-go"
-	"github.com/lucas-clemente/quic-go/integrationtests/proxy"
-	"github.com/lucas-clemente/quic-go/internal/utils"
-	"github.com/lucas-clemente/quic-go/protocol"
-	"github.com/lucas-clemente/quic-go/qerr"
-
-	"github.com/lucas-clemente/quic-go/testdata"
-	. "github.com/onsi/ginkgo"
-	. "github.com/onsi/gomega"
-)
-
-var _ = Describe("Handshake integration tets", func() {
-	var (
-		proxy         *quicproxy.QuicProxy
-		server        quic.Listener
-		serverConfig  *quic.Config
-		testStartedAt time.Time
-	)
-	rtt := 400 * time.Millisecond
-
-	BeforeEach(func() {
-		serverConfig = &quic.Config{}
-	})
-
-	AfterEach(func() {
-		Expect(proxy.Close()).To(Succeed())
-		Expect(server.Close()).To(Succeed())
-	})
-
-	runServerAndProxy := func() {
-		var err error
-		// start the server
-		server, err = quic.ListenAddr("localhost:0", testdata.GetTLSConfig(), serverConfig)
-		Expect(err).ToNot(HaveOccurred())
-		// start the proxy
-		proxy, err = quicproxy.NewQuicProxy("localhost:0", quicproxy.Opts{
-			RemoteAddr:  server.Addr().String(),
-			DelayPacket: func(_ quicproxy.Direction, _ protocol.PacketNumber) time.Duration { return rtt / 2 },
-		})
-		Expect(err).ToNot(HaveOccurred())
-
-		testStartedAt = time.Now()
-
-		go func() {
-			for {
-				_, _ = server.Accept()
-			}
-		}()
-	}
-
-	expectDurationInRTTs := func(num int) {
-		testDuration := time.Since(testStartedAt)
-		expectedDuration := time.Duration(num) * rtt
-		Expect(testDuration).To(SatisfyAll(
-			BeNumerically(">=", expectedDuration),
-			BeNumerically("<", expectedDuration+rtt),
-		))
-	}
-
-	It("fails when there's no matching version, after 1 RTT", func() {
-		Expect(len(protocol.SupportedVersions)).To(BeNumerically(">", 1))
-		serverConfig.Versions = protocol.SupportedVersions[:1]
-		runServerAndProxy()
-		clientConfig := &quic.Config{
-			Versions: protocol.SupportedVersions[1:2],
-		}
-		_, err := quic.DialAddr(proxy.LocalAddr().String(), nil, clientConfig)
-		Expect(err).To(HaveOccurred())
-		Expect(err.(qerr.ErrorCode)).To(Equal(qerr.InvalidVersion))
-		expectDurationInRTTs(1)
-	})
-
-	// 1 RTT for verifying the source address
-	// 1 RTT to become secure
-	// 1 RTT to become forward-secure
-	It("is forward-secure after 3 RTTs", func() {
-		runServerAndProxy()
-		_, err := quic.DialAddr(proxy.LocalAddr().String(), &tls.Config{InsecureSkipVerify: true}, nil)
-		Expect(err).ToNot(HaveOccurred())
-		expectDurationInRTTs(3)
-	})
-
-	// 1 RTT for verifying the source address
-	// 1 RTT to become secure
-	// TODO (marten-seemann): enable this test (see #625)
-	PIt("is secure after 2 RTTs", func() {
-		utils.SetLogLevel(utils.LogLevelDebug)
-		runServerAndProxy()
-		_, err := quic.DialAddrNonFWSecure(proxy.LocalAddr().String(), &tls.Config{InsecureSkipVerify: true}, nil)
-		fmt.Println("#### is non fw secure ###")
-		Expect(err).ToNot(HaveOccurred())
-		expectDurationInRTTs(2)
-	})
-
-	It("is forward-secure after 2 RTTs when the server doesn't require an STK", func() {
-		serverConfig.AcceptSTK = func(_ net.Addr, _ *quic.STK) bool {
-			return true
-		}
-		runServerAndProxy()
-		_, err := quic.DialAddr(proxy.LocalAddr().String(), &tls.Config{InsecureSkipVerify: true}, nil)
-		Expect(err).ToNot(HaveOccurred())
-		expectDurationInRTTs(2)
-	})
-
-	It("doesn't complete the handshake when the server never accepts the STK", func() {
-		serverConfig.AcceptSTK = func(_ net.Addr, _ *quic.STK) bool {
-			return false
-		}
-		runServerAndProxy()
-		_, err := quic.DialAddr(proxy.LocalAddr().String(), &tls.Config{InsecureSkipVerify: true}, nil)
-		Expect(err).To(HaveOccurred())
-		Expect(err.(*qerr.QuicError).ErrorCode).To(Equal(qerr.CryptoTooManyRejects))
-	})
-
-	It("doesn't complete the handshake when the handshake timeout is too short", func() {
-		serverConfig.HandshakeTimeout = 2 * rtt
-		runServerAndProxy()
-		_, err := quic.DialAddr(proxy.LocalAddr().String(), &tls.Config{InsecureSkipVerify: true}, nil)
-		Expect(err).To(HaveOccurred())
-		Expect(err.(*qerr.QuicError).ErrorCode).To(Equal(qerr.HandshakeTimeout))
-		// 2 RTTs during the timeout
-		// plus 1 RTT: the timer starts 0.5 RTTs after sending the first packet, and the CONNECTION_CLOSE needs another 0.5 RTTs to reach the client
-		expectDurationInRTTs(3)
-	})
-})
diff --git a/vendor/github.com/lucas-clemente/quic-go/integrationtests/integration.go b/vendor/github.com/lucas-clemente/quic-go/integrationtests/integration.go
deleted file mode 100644
index c94303b8..00000000
--- a/vendor/github.com/lucas-clemente/quic-go/integrationtests/integration.go
+++ /dev/null
@@ -1 +0,0 @@
-package integrationtests
diff --git a/vendor/github.com/lucas-clemente/quic-go/integrationtests/self/self.go b/vendor/github.com/lucas-clemente/quic-go/integrationtests/self/self.go
new file mode 100644
index 00000000..51e34e22
--- /dev/null
+++ b/vendor/github.com/lucas-clemente/quic-go/integrationtests/self/self.go
@@ -0,0 +1 @@
+package self
diff --git a/vendor/github.com/lucas-clemente/quic-go/integrationtests/proxy/proxy.go b/vendor/github.com/lucas-clemente/quic-go/integrationtests/tools/proxy/proxy.go
similarity index 100%
rename from vendor/github.com/lucas-clemente/quic-go/integrationtests/proxy/proxy.go
rename to vendor/github.com/lucas-clemente/quic-go/integrationtests/tools/proxy/proxy.go
diff --git a/vendor/github.com/lucas-clemente/quic-go/integrationtests/tools/testlog/testlog.go b/vendor/github.com/lucas-clemente/quic-go/integrationtests/tools/testlog/testlog.go
new file mode 100644
index 00000000..7db09a44
--- /dev/null
+++ b/vendor/github.com/lucas-clemente/quic-go/integrationtests/tools/testlog/testlog.go
@@ -0,0 +1,41 @@
+package testlog
+
+import (
+	"flag"
+	"log"
+	"os"
+
+	"github.com/lucas-clemente/quic-go/internal/utils"
+
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+)
+
+var (
+	logFileName string // the log file set in the ginkgo flags
+	logFile     *os.File
+)
+
+// read the logfile command line flag
+// to set call ginkgo -- -logfile=log.txt
+func init() {
+	flag.StringVar(&logFileName, "logfile", "", "log file")
+}
+
+var _ = BeforeEach(func() {
+	log.SetFlags(log.Ldate | log.Ltime | log.Lmicroseconds)
+
+	if len(logFileName) > 0 {
+		var err error
+		logFile, err = os.Create("./log.txt")
+		Expect(err).ToNot(HaveOccurred())
+		log.SetOutput(logFile)
+		utils.SetLogLevel(utils.LogLevelDebug)
+	}
+})
+
+var _ = AfterEach(func() {
+	if len(logFileName) > 0 {
+		_ = logFile.Close()
+	}
+})
diff --git a/vendor/github.com/lucas-clemente/quic-go/integrationtests/tools/testserver/server.go b/vendor/github.com/lucas-clemente/quic-go/integrationtests/tools/testserver/server.go
new file mode 100644
index 00000000..05ca66dd
--- /dev/null
+++ b/vendor/github.com/lucas-clemente/quic-go/integrationtests/tools/testserver/server.go
@@ -0,0 +1,103 @@
+package testserver
+
+import (
+	"io"
+	"io/ioutil"
+	"net"
+	"net/http"
+	"strconv"
+
+	"github.com/lucas-clemente/quic-go/h2quic"
+	"github.com/lucas-clemente/quic-go/internal/testdata"
+
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+)
+
+const (
+	dataLen     = 500 * 1024       // 500 KB
+	dataLenLong = 50 * 1024 * 1024 // 50 MB
+)
+
+var (
+	PRData     = GeneratePRData(dataLen)
+	PRDataLong = GeneratePRData(dataLenLong)
+
+	server *h2quic.Server
+	port   string
+)
+
+func init() {
+	http.HandleFunc("/prdata", func(w http.ResponseWriter, r *http.Request) {
+		defer GinkgoRecover()
+		sl := r.URL.Query().Get("len")
+		if sl != "" {
+			var err error
+			l, err := strconv.Atoi(sl)
+			Expect(err).NotTo(HaveOccurred())
+			_, err = w.Write(GeneratePRData(l))
+			Expect(err).NotTo(HaveOccurred())
+		} else {
+			_, err := w.Write(PRData)
+			Expect(err).NotTo(HaveOccurred())
+		}
+	})
+
+	http.HandleFunc("/prdatalong", func(w http.ResponseWriter, r *http.Request) {
+		defer GinkgoRecover()
+		_, err := w.Write(PRDataLong)
+		Expect(err).NotTo(HaveOccurred())
+	})
+
+	http.HandleFunc("/hello", func(w http.ResponseWriter, r *http.Request) {
+		defer GinkgoRecover()
+		_, err := io.WriteString(w, "Hello, World!\n")
+		Expect(err).NotTo(HaveOccurred())
+	})
+
+	http.HandleFunc("/echo", func(w http.ResponseWriter, r *http.Request) {
+		defer GinkgoRecover()
+		body, err := ioutil.ReadAll(r.Body)
+		Expect(err).NotTo(HaveOccurred())
+		_, err = w.Write(body)
+		Expect(err).NotTo(HaveOccurred())
+	})
+}
+
+// See https://en.wikipedia.org/wiki/Lehmer_random_number_generator
+func GeneratePRData(l int) []byte {
+	res := make([]byte, l)
+	seed := uint64(1)
+	for i := 0; i < l; i++ {
+		seed = seed * 48271 % 2147483647
+		res[i] = byte(seed)
+	}
+	return res
+}
+
+func StartQuicServer() {
+	server = &h2quic.Server{
+		Server: &http.Server{
+			TLSConfig: testdata.GetTLSConfig(),
+		},
+	}
+
+	addr, err := net.ResolveUDPAddr("udp", "0.0.0.0:0")
+	Expect(err).NotTo(HaveOccurred())
+	conn, err := net.ListenUDP("udp", addr)
+	Expect(err).NotTo(HaveOccurred())
+	port = strconv.Itoa(conn.LocalAddr().(*net.UDPAddr).Port)
+
+	go func() {
+		defer GinkgoRecover()
+		server.Serve(conn)
+	}()
+}
+
+func StopQuicServer() {
+	Expect(server.Close()).NotTo(HaveOccurred())
+}
+
+func Port() string {
+	return port
+}
diff --git a/vendor/github.com/lucas-clemente/quic-go/interface.go b/vendor/github.com/lucas-clemente/quic-go/interface.go
index c4b7ed30..41b607ca 100644
--- a/vendor/github.com/lucas-clemente/quic-go/interface.go
+++ b/vendor/github.com/lucas-clemente/quic-go/interface.go
@@ -1,6 +1,7 @@
 package quic
 
 import (
+	"context"
 	"io"
 	"net"
 	"time"
@@ -22,6 +23,10 @@ type Stream interface {
 	StreamID() protocol.StreamID
 	// Reset closes the stream with an error.
 	Reset(error)
+	// The context is canceled as soon as the write-side of the stream is closed.
+	// This happens when Close() is called, or when the stream is reset (either locally or remotely).
+	// Warning: This API should not be considered stable and might change soon.
+	Context() context.Context
 	// SetReadDeadline sets the deadline for future Read calls and
 	// any currently-blocked Read call.
 	// A zero value for t means Read will not time out.
@@ -43,7 +48,7 @@ type Session interface {
 	// AcceptStream returns the next stream opened by the peer, blocking until one is available.
 	// Since stream 1 is reserved for the crypto stream, the first stream is either 2 (for a client) or 3 (for a server).
 	AcceptStream() (Stream, error)
-	// OpenStream opens a new QUIC stream, returning a special error when the peeer's concurrent stream limit is reached.
+	// OpenStream opens a new QUIC stream, returning a special error when the peer's concurrent stream limit is reached.
 	// New streams always have the smallest possible stream ID.
 	// TODO: Enable testing for the special error
 	OpenStream() (Stream, error)
@@ -56,9 +61,9 @@ type Session interface {
 	RemoteAddr() net.Addr
 	// Close closes the connection. The error will be sent to the remote peer in a CONNECTION_CLOSE frame. An error value of nil is allowed and will cause a normal PeerGoingAway to be sent.
 	Close(error) error
-	// WaitUntilClosed() blocks until the session is closed.
+	// The context is cancelled when the session is closed.
 	// Warning: This API should not be considered stable and might change soon.
-	WaitUntilClosed()
+	Context() context.Context
 }
 
 // A NonFWSession is a QUIC connection between two peers half-way through the handshake.
diff --git a/vendor/github.com/lucas-clemente/quic-go/internal/utils/utils.go b/vendor/github.com/lucas-clemente/quic-go/internal/utils/utils.go
index f6c4e03b..5a987e61 100644
--- a/vendor/github.com/lucas-clemente/quic-go/internal/utils/utils.go
+++ b/vendor/github.com/lucas-clemente/quic-go/internal/utils/utils.go
@@ -127,10 +127,3 @@ func WriteUint24(b *bytes.Buffer, i uint32) {
 func WriteUint16(b *bytes.Buffer, i uint16) {
 	b.Write([]byte{uint8(i), uint8(i >> 8)})
 }
-
-// Uint32Slice attaches the methods of sort.Interface to []uint32, sorting in increasing order.
-type Uint32Slice []uint32
-
-func (s Uint32Slice) Len() int           { return len(s) }
-func (s Uint32Slice) Less(i, j int) bool { return s[i] < s[j] }
-func (s Uint32Slice) Swap(i, j int)      { s[i], s[j] = s[j], s[i] }
diff --git a/vendor/github.com/lucas-clemente/quic-go/protocol/version.go b/vendor/github.com/lucas-clemente/quic-go/protocol/version.go
index 388162e2..c250cab6 100644
--- a/vendor/github.com/lucas-clemente/quic-go/protocol/version.go
+++ b/vendor/github.com/lucas-clemente/quic-go/protocol/version.go
@@ -8,6 +8,7 @@ const (
 	Version35 VersionNumber = 35 + iota
 	Version36
 	Version37
+	Version38
 	VersionWhatever    VersionNumber = 0 // for when the version doesn't matter
 	VersionUnsupported VersionNumber = -1
 )
@@ -15,7 +16,10 @@ const (
 // SupportedVersions lists the versions that the server supports
 // must be in sorted descending order
 var SupportedVersions = []VersionNumber{
-	Version37, Version36, Version35,
+	Version38,
+	Version37,
+	Version36,
+	Version35,
 }
 
 // VersionNumberToTag maps version numbers ('32') to tags ('Q032')
diff --git a/vendor/github.com/lucas-clemente/quic-go/public_header.go b/vendor/github.com/lucas-clemente/quic-go/public_header.go
index 59ddc6cb..4af66ab1 100644
--- a/vendor/github.com/lucas-clemente/quic-go/public_header.go
+++ b/vendor/github.com/lucas-clemente/quic-go/public_header.go
@@ -3,6 +3,7 @@ package quic
 import (
 	"bytes"
 	"errors"
+	"io"
 
 	"github.com/lucas-clemente/quic-go/internal/utils"
 	"github.com/lucas-clemente/quic-go/protocol"
@@ -166,9 +167,7 @@ func ParsePublicHeader(b *bytes.Reader, packetSentBy protocol.Perspective) (*Pub
 		// see https://github.com/lucas-clemente/quic-go/issues/232
 		if !header.VersionFlag && !header.ResetFlag {
 			header.DiversificationNonce = make([]byte, 32)
-			// this Read can never return an EOF for a valid packet, since the diversification nonce is followed by the packet number
-			_, err = b.Read(header.DiversificationNonce)
-			if err != nil {
+			if _, err := io.ReadFull(b, header.DiversificationNonce); err != nil {
 				return nil, err
 			}
 		}
diff --git a/vendor/github.com/lucas-clemente/quic-go/session.go b/vendor/github.com/lucas-clemente/quic-go/session.go
index 376aa7fc..88d8ba56 100644
--- a/vendor/github.com/lucas-clemente/quic-go/session.go
+++ b/vendor/github.com/lucas-clemente/quic-go/session.go
@@ -1,6 +1,7 @@
 package quic
 
 import (
+	"context"
 	"crypto/tls"
 	"errors"
 	"fmt"
@@ -78,11 +79,11 @@ type session struct {
 	sendingScheduled chan struct{}
 	// closeChan is used to notify the run loop that it should terminate.
 	closeChan chan closeError
-	// runClosed is closed once the run loop exits
-	// it is used to block Close() and WaitUntilClosed()
-	runClosed chan struct{}
 	closeOnce sync.Once
 
+	ctx       context.Context
+	ctxCancel context.CancelFunc
+
 	// when we receive too many undecryptable packets during the handshake, we send a Public reset
 	// but only after a time of protocol.PublicResetTimeout has passed
 	undecryptablePackets                   []*receivedPacket
@@ -167,12 +168,12 @@ func (s *session) setup(
 	s.aeadChanged = aeadChanged
 	handshakeChan := make(chan handshakeEvent, 3)
 	s.handshakeChan = handshakeChan
-	s.runClosed = make(chan struct{})
 	s.handshakeCompleteChan = make(chan error, 1)
 	s.receivedPackets = make(chan *receivedPacket, protocol.MaxSessionUnprocessedPackets)
 	s.closeChan = make(chan closeError, 1)
 	s.sendingScheduled = make(chan struct{}, 1)
 	s.undecryptablePackets = make([]*receivedPacket, 0, protocol.MaxUndecryptablePackets)
+	s.ctx, s.ctxCancel = context.WithCancel(context.Background())
 
 	s.timer = utils.NewTimer()
 	now := time.Now()
@@ -333,12 +334,12 @@ runLoop:
 		s.handshakeChan <- handshakeEvent{err: closeErr.err}
 	}
 	s.handleCloseError(closeErr)
-	close(s.runClosed)
+	defer s.ctxCancel()
 	return closeErr.err
 }
 
-func (s *session) WaitUntilClosed() {
-	<-s.runClosed
+func (s *session) Context() context.Context {
+	return s.ctx
 }
 
 func (s *session) maybeResetTimer() {
@@ -445,7 +446,9 @@ func (s *session) handleFrames(fs []frames.Frame) error {
 		case *frames.GoawayFrame:
 			err = errors.New("unimplemented: handling GOAWAY frames")
 		case *frames.StopWaitingFrame:
-			err = s.receivedPacketHandler.ReceivedStopWaiting(frame)
+			// LeastUnacked is guaranteed to have LeastUnacked > 0
+			// therefore this will never underflow
+			s.receivedPacketHandler.SetLowerLimit(frame.LeastUnacked - 1)
 		case *frames.RstStreamFrame:
 			err = s.handleRstStreamFrame(frame)
 		case *frames.WindowUpdateFrame:
@@ -543,7 +546,7 @@ func (s *session) closeRemote(e error) {
 // It waits until the run loop has stopped before returning
 func (s *session) Close(e error) error {
 	s.closeLocal(e)
-	<-s.runClosed
+	<-s.ctx.Done()
 	return nil
 }
 
@@ -575,7 +578,9 @@ func (s *session) handleCloseError(closeErr closeError) error {
 		return nil
 	}
 
-	if quicErr.ErrorCode == qerr.DecryptionFailure || quicErr == handshake.ErrHOLExperiment {
+	if quicErr.ErrorCode == qerr.DecryptionFailure ||
+		quicErr == handshake.ErrHOLExperiment ||
+		quicErr == handshake.ErrNSTPExperiment {
 		return s.sendPublicReset(s.lastRcvdPacketNumber)
 	}
 	return s.sendConnectionClose(quicErr)
diff --git a/vendor/github.com/lucas-clemente/quic-go/stream.go b/vendor/github.com/lucas-clemente/quic-go/stream.go
index 6a3d4a06..ffadc183 100644
--- a/vendor/github.com/lucas-clemente/quic-go/stream.go
+++ b/vendor/github.com/lucas-clemente/quic-go/stream.go
@@ -1,6 +1,7 @@
 package quic
 
 import (
+	"context"
 	"fmt"
 	"io"
 	"net"
@@ -19,6 +20,9 @@ import (
 type stream struct {
 	mutex sync.Mutex
 
+	ctx       context.Context
+	ctxCancel context.CancelFunc
+
 	streamID protocol.StreamID
 	onData   func()
 	// onReset is a callback that should send a RST_STREAM
@@ -55,6 +59,8 @@ type stream struct {
 	flowControlManager flowcontrol.FlowControlManager
 }
 
+var _ Stream = &stream{}
+
 type deadlineError struct{}
 
 func (deadlineError) Error() string   { return "deadline exceeded" }
@@ -68,7 +74,7 @@ func newStream(StreamID protocol.StreamID,
 	onData func(),
 	onReset func(protocol.StreamID, protocol.ByteCount),
 	flowControlManager flowcontrol.FlowControlManager) *stream {
-	return &stream{
+	s := &stream{
 		onData:             onData,
 		onReset:            onReset,
 		streamID:           StreamID,
@@ -77,6 +83,8 @@ func newStream(StreamID protocol.StreamID,
 		readChan:           make(chan struct{}, 1),
 		writeChan:          make(chan struct{}, 1),
 	}
+	s.ctx, s.ctxCancel = context.WithCancel(context.Background())
+	return s
 }
 
 // Read implements io.Reader. It is not thread safe!
@@ -180,6 +188,9 @@ func (s *stream) Write(p []byte) (int, error) {
 	if s.resetLocally.Get() || s.err != nil {
 		return 0, s.err
 	}
+	if s.finishedWriting.Get() {
+		return 0, fmt.Errorf("write on closed stream %d", s.streamID)
+	}
 	if len(p) == 0 {
 		return 0, nil
 	}
@@ -254,6 +265,7 @@ func (s *stream) getDataForWriting(maxBytes protocol.ByteCount) []byte {
 // Close implements io.Closer
 func (s *stream) Close() error {
 	s.finishedWriting.Set(true)
+	s.ctxCancel()
 	s.onData()
 	return nil
 }
@@ -349,6 +361,7 @@ func (s *stream) CloseRemote(offset protocol.ByteCount) {
 func (s *stream) Cancel(err error) {
 	s.mutex.Lock()
 	s.cancelled.Set(true)
+	s.ctxCancel()
 	// errors must not be changed!
 	if s.err == nil {
 		s.err = err
@@ -365,6 +378,7 @@ func (s *stream) Reset(err error) {
 	}
 	s.mutex.Lock()
 	s.resetLocally.Set(true)
+	s.ctxCancel()
 	// errors must not be changed!
 	if s.err == nil {
 		s.err = err
@@ -385,6 +399,7 @@ func (s *stream) RegisterRemoteError(err error) {
 	}
 	s.mutex.Lock()
 	s.resetRemotely.Set(true)
+	s.ctxCancel()
 	// errors must not be changed!
 	if s.err == nil {
 		s.err = err
@@ -409,6 +424,10 @@ func (s *stream) finished() bool {
 		(s.finishedWriteAndSentFin() && s.resetRemotely.Get())
 }
 
+func (s *stream) Context() context.Context {
+	return s.ctx
+}
+
 func (s *stream) StreamID() protocol.StreamID {
 	return s.streamID
 }
diff --git a/vendor/manifest b/vendor/manifest
index a2b85ecd..8de1c0f7 100644
--- a/vendor/manifest
+++ b/vendor/manifest
@@ -129,7 +129,7 @@
 			"importpath": "github.com/lucas-clemente/quic-go",
 			"repository": "https://github.com/lucas-clemente/quic-go",
 			"vcs": "git",
-			"revision": "3e012f77c8d4c06297b2fa40261e82193134b224",
+			"revision": "a9e2a28315406f825cdfe41f8652110addeb84a5",
 			"branch": "master",
 			"notests": true
 		},