diff --git a/go.mod b/go.mod
index 91c614ed..e14e969a 100644
--- a/go.mod
+++ b/go.mod
@@ -4,8 +4,23 @@ go 1.18
 
 require (
 	github.com/bradfitz/gomemcache v0.0.0-20220106215444-fb4bf637b56d
+	github.com/lucas-clemente/quic-go v0.30.0
 	github.com/tatsuhiro-t/go-nghttp2 v0.0.0-20150408091349-4742878d9c90
-	golang.org/x/net v0.0.0-20220421235706-1d1ef9303861
+	golang.org/x/net v0.0.0-20220722155237-a158d28d115b
 )
 
-require golang.org/x/text v0.3.7 // indirect
+require (
+	github.com/go-task/slim-sprig v0.0.0-20210107165309-348f09dbbbc0 // indirect
+	github.com/golang/mock v1.6.0 // indirect
+	github.com/google/pprof v0.0.0-20210407192527-94a9f03dee38 // indirect
+	github.com/marten-seemann/qpack v0.3.0 // indirect
+	github.com/marten-seemann/qtls-go1-18 v0.1.3 // indirect
+	github.com/marten-seemann/qtls-go1-19 v0.1.1 // indirect
+	github.com/onsi/ginkgo/v2 v2.2.0 // indirect
+	golang.org/x/crypto v0.0.0-20210921155107-089bfa567519 // indirect
+	golang.org/x/exp v0.0.0-20220722155223-a9213eeb770e // indirect
+	golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4 // indirect
+	golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f // indirect
+	golang.org/x/text v0.3.7 // indirect
+	golang.org/x/tools v0.1.12 // indirect
+)
diff --git a/go.sum b/go.sum
new file mode 100644
index 00000000..d58364bf
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,78 @@
+github.com/bradfitz/gomemcache v0.0.0-20220106215444-fb4bf637b56d h1:pVrfxiGfwelyab6n21ZBkbkmbevaf+WvMIiR7sr97hw=
+github.com/bradfitz/gomemcache v0.0.0-20220106215444-fb4bf637b56d/go.mod h1:H0wQNHz2YrLsuXOZozoeDmnHXkNCRmMW0gwFWDfEZDA=
+github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
+github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
+github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMnBNeIyt5eFwwo7qiLfzFZmjNmxjkiQlU=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/go-task/slim-sprig v0.0.0-20210107165309-348f09dbbbc0 h1:p104kn46Q8WdvHunIJ9dAyjPVtrBPhSr3KT2yUst43I=
+github.com/go-task/slim-sprig v0.0.0-20210107165309-348f09dbbbc0/go.mod h1:fyg7847qk6SyHyPtNmDHnmrv/HOrqktSC+C9fM+CJOE=
+github.com/golang/mock v1.6.0 h1:ErTB+efbowRARo13NNdxyJji2egdxLGQhRaY+DUumQc=
+github.com/golang/mock v1.6.0/go.mod h1:p6yTPP+5HYm5mzsMV8JkE6ZKdX+/wYM6Hr+LicevLPs=
+github.com/golang/protobuf v1.5.2 h1:ROPKBNFfQgOUMifHyP+KYbvpjbdoFNs+aK7DXlji0Tw=
+github.com/google/go-cmp v0.5.8 h1:e6P7q2lk1O+qJJb4BtCQXlK8vWEO8V1ZeuEdJNOqZyg=
+github.com/google/pprof v0.0.0-20210407192527-94a9f03dee38 h1:yAJXTCF9TqKcTiHJAE8dj7HMvPfh66eeA2JYW7eFpSE=
+github.com/google/pprof v0.0.0-20210407192527-94a9f03dee38/go.mod h1:kpwsk12EmLew5upagYY7GY0pfYCcupk39gWOCRROcvE=
+github.com/ianlancetaylor/demangle v0.0.0-20200824232613-28f6c0f3b639/go.mod h1:aSSvb/t6k1mPoxDqO4vJh6VOCGPwU4O0C2/Eqndh1Sc=
+github.com/lucas-clemente/quic-go v0.30.0 h1:nwLW0h8ahVQ5EPTIM7uhl/stHqQDea15oRlYKZmw2O0=
+github.com/lucas-clemente/quic-go v0.30.0/go.mod h1:ssOrRsOmdxa768Wr78vnh2B8JozgLsMzG/g+0qEC7uk=
+github.com/marten-seemann/qpack v0.3.0 h1:UiWstOgT8+znlkDPOg2+3rIuYXJ2CnGDkGUXN6ki6hE=
+github.com/marten-seemann/qpack v0.3.0/go.mod h1:cGfKPBiP4a9EQdxCwEwI/GEeWAsjSekBvx/X8mh58+g=
+github.com/marten-seemann/qtls-go1-18 v0.1.3 h1:R4H2Ks8P6pAtUagjFty2p7BVHn3XiwDAl7TTQf5h7TI=
+github.com/marten-seemann/qtls-go1-18 v0.1.3/go.mod h1:mJttiymBAByA49mhlNZZGrH5u1uXYZJ+RW28Py7f4m4=
+github.com/marten-seemann/qtls-go1-19 v0.1.1 h1:mnbxeq3oEyQxQXwI4ReCgW9DPoPR94sNlqWoDZnjRIE=
+github.com/marten-seemann/qtls-go1-19 v0.1.1/go.mod h1:5HTDWtVudo/WFsHKRNuOhWlbdjrfs5JHrYb0wIJqGpI=
+github.com/onsi/ginkgo/v2 v2.2.0 h1:3ZNA3L1c5FYDFTTxbFeVGGD8jYvjYauHD30YgLxVsNI=
+github.com/onsi/ginkgo/v2 v2.2.0/go.mod h1:MEH45j8TBi6u9BMogfbp0stKC5cdGjumZj5Y7AG4VIk=
+github.com/onsi/gomega v1.20.1 h1:PA/3qinGoukvymdIDV8pii6tiZgC8kbmJO6Z5+b002Q=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.5.1 h1:nOGnQDM7FYENwehXlg/kFVnos3rEvtKTjRvOWSzb6H4=
+github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
+github.com/tatsuhiro-t/go-nghttp2 v0.0.0-20150408091349-4742878d9c90 h1:ccVm9C6f5YMcVv6t9MXahIDkqVvzD6vklkJTIE4D2nY=
+github.com/tatsuhiro-t/go-nghttp2 v0.0.0-20150408091349-4742878d9c90/go.mod h1:YZhsh86DfZgAShPKeg1eBLVrmuQxWcR9H4TdpgNvSnw=
+github.com/yuin/goldmark v1.3.5/go.mod h1:mwnBkeHKe2W/ZEtQ+71ViKU8L12m81fl3OWwC1Zlc8k=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
+golang.org/x/crypto v0.0.0-20210921155107-089bfa567519 h1:7I4JAnoQBe7ZtJcBaYHi5UtiO8tQHbUSXxL+pnGRANg=
+golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
+golang.org/x/exp v0.0.0-20220722155223-a9213eeb770e h1:+WEEuIdZHnUeJJmEUjyYC2gfUMj69yZXw17EnHg/otA=
+golang.org/x/exp v0.0.0-20220722155223-a9213eeb770e/go.mod h1:Kr81I6Kryrl9sr8s2FK3vxD90NdsKWRuOIl2O4CvYbA=
+golang.org/x/mod v0.4.2/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
+golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4 h1:6zppjxzCulZykYSLyVDYbneBfbaBIQPYMevg0bEwv2s=
+golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
+golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
+golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20210405180319-a5a99cb37ef4/go.mod h1:p54w0d4576C0XHj96bSt6lcn1PtDYWL6XObtHCRCNQM=
+golang.org/x/net v0.0.0-20220722155237-a158d28d115b h1:PxfKdU9lEEDYjdIzOtC4qFWgkU2rGHdKlKowJSMN9h0=
+golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
+golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20191204072324-ce4227a45e2e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210330210617-4fbd30eecc44/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210510120138-977fb7262007/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f h1:v4INt8xihDGvnrfjMDVXGxw9wrfxYyCjk0KbXjhR55s=
+golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.7 h1:olpwvP2KacW1ZWvsR7uQhoyTYvKAupfQrRGBFM352Gk=
+golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
+golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.1.1/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
+golang.org/x/tools v0.1.12 h1:VveCTK38A2rkS8ZqFY25HIDFscX5X9OoEhJd3quQmXU=
+golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
+golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+google.golang.org/protobuf v1.28.0 h1:w43yiav+6bVFTBQFZX0r7ipe9JQ1QsbMgHwbBziscLw=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
diff --git a/integration-tests/Makefile.am b/integration-tests/Makefile.am
index 0bd0337a..c2d39dfa 100644
--- a/integration-tests/Makefile.am
+++ b/integration-tests/Makefile.am
@@ -39,6 +39,12 @@ EXTRA_DIST = \
 	req-return.rb \
 	resp-return.rb
 
+GO_TEST_TAGS =
+
+if ENABLE_HTTP3
+GO_TEST_TAGS += quic
+endif # ENABLE_HTTP3
+
 it:
 	for i in $(GO_FILES); do [ -e $(builddir)/$$i ] || cp $(srcdir)/$$i $(builddir); done
-	sh setenv go test -v
+	sh setenv go test -v --tags=${GO_TEST_TAGS}
diff --git a/integration-tests/nghttpx_http3_test.go b/integration-tests/nghttpx_http3_test.go
new file mode 100644
index 00000000..bd1e2e91
--- /dev/null
+++ b/integration-tests/nghttpx_http3_test.go
@@ -0,0 +1,86 @@
+//go:build quic
+package nghttp2
+
+import (
+	"bytes"
+	"crypto/rand"
+	"io"
+	"net/http"
+	"testing"
+)
+
+// TestH3H1PlainGET tests whether simple HTTP/3 GET request works.
+func TestH3H1PlainGET(t *testing.T) {
+	st := newServerTester(t, options{
+		quic: true,
+	})
+	defer st.Close()
+
+	res, err := st.http3(requestParam{
+		name: "TestH3H1PlainGET",
+	})
+	if err != nil {
+		t.Fatalf("Error st.http3() = %v", err)
+	}
+
+	want := 200
+	if got := res.status; got != want {
+		t.Errorf("status = %v; want %v", got, want)
+	}
+}
+
+// TestH3H1RequestBody tests HTTP/3 request with body works.
+func TestH3H1RequestBody(t *testing.T) {
+	body := make([]byte, 3333)
+	_, err := rand.Read(body)
+	if err != nil {
+		t.Fatalf("Unable to create request body: %v", err)
+	}
+
+	opts := options{
+		handler: func(w http.ResponseWriter, r *http.Request) {
+			buf := make([]byte, 4096)
+			buflen := 0
+			p := buf
+
+			for {
+				if len(p) == 0 {
+					t.Fatal("Request body is too large")
+				}
+
+				n, err := r.Body.Read(p)
+
+				p = p[n:]
+				buflen += n
+
+				if err != nil {
+					if err == io.EOF {
+						break
+					}
+
+					t.Fatalf("r.Body.Read() = %v", err)
+				}
+			}
+
+			buf = buf[:buflen]
+
+			if got, want := buf, body; !bytes.Equal(got, want) {
+				t.Fatalf("buf = %v; want %v", got, want)
+			}
+		},
+		quic: true,
+	}
+	st := newServerTester(t, opts)
+	defer st.Close()
+
+	res, err := st.http3(requestParam{
+		name: "TestH3H1RequestBody",
+		body: body,
+	})
+	if err != nil {
+		t.Fatalf("Error st.http3() = %v", err)
+	}
+	if got, want := res.status, 200; got != want {
+		t.Errorf("res.status: %v; want %v", got, want)
+	}
+}
diff --git a/integration-tests/server_tester.go b/integration-tests/server_tester.go
index 9c5c323a..d6bebee4 100644
--- a/integration-tests/server_tester.go
+++ b/integration-tests/server_tester.go
@@ -21,6 +21,7 @@ import (
 	"testing"
 	"time"
 
+	"github.com/lucas-clemente/quic-go/http3"
 	"github.com/tatsuhiro-t/go-nghttp2"
 	"golang.org/x/net/http2"
 	"golang.org/x/net/http2/hpack"
@@ -80,10 +81,17 @@ type options struct {
 	// before TLS handshake starts.  This field is ignored if tls
 	// is false.
 	tcpData []byte
+	// quic, if set to true, sets up QUIC frontend connection.
+	// quic implies tls = true.
+	quic bool
 }
 
 // newServerTester creates test context.
 func newServerTester(t *testing.T, opts options) *serverTester {
+	if opts.quic {
+		opts.tls = true
+	}
+
 	if opts.handler == nil {
 		opts.handler = noopHandler
 	}
@@ -182,6 +190,12 @@ func newServerTester(t *testing.T, opts options) *serverTester {
 	args = append(args, fmt.Sprintf("-f127.0.0.1,%v%v%v", serverPort, noTLS, proxyProto), b,
 		"--errorlog-file="+logDir+"/log.txt", "-LINFO")
 
+	if opts.quic {
+		args = append(args,
+			fmt.Sprintf("-f127.0.0.1,%v;quic", serverPort),
+			"--no-quic-bpf")
+	}
+
 	authority := fmt.Sprintf("127.0.0.1:%v", opts.connectPort)
 
 	st := &serverTester{
@@ -375,6 +389,78 @@ func (st *serverTester) websocket(rp requestParam) (*serverResponse, error) {
 	return res, nil
 }
 
+func (st *serverTester) http3(rp requestParam) (*serverResponse, error) {
+	rt := &http3.RoundTripper{
+		TLSClientConfig: &tls.Config{
+			InsecureSkipVerify: true,
+		},
+	}
+
+	defer rt.Close()
+
+	c := &http.Client{
+		Transport: rt,
+	}
+
+	method := "GET"
+	if rp.method != "" {
+		method = rp.method
+	}
+
+	var body io.Reader
+
+	if rp.body != nil {
+		body = bytes.NewBuffer(rp.body)
+	}
+
+	reqURL := st.url
+
+	if rp.path != "" {
+		u, err := url.Parse(st.url)
+		if err != nil {
+			st.t.Fatalf("Error parsing URL from st.url %v: %v", st.url, err)
+		}
+		u.Path = ""
+		u.RawQuery = ""
+		reqURL = u.String() + rp.path
+	}
+
+	req, err := http.NewRequest(method, reqURL, body)
+	if err != nil {
+		return nil, err
+	}
+
+	for _, h := range rp.header {
+		req.Header.Add(h.Name, h.Value)
+	}
+
+	req.Header.Add("Test-Case", rp.name)
+
+	// TODO http3 package does not support trailer at the time of
+	// this writing.
+
+	resp, err := c.Do(req)
+	if err != nil {
+		return nil, err
+	}
+
+	defer resp.Body.Close()
+
+	respBody, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return nil, err
+	}
+
+	res := &serverResponse{
+		status:    resp.StatusCode,
+		header:    resp.Header,
+		body:      respBody,
+		connClose: resp.Close,
+	}
+
+	return res, nil
+}
+
 func (st *serverTester) http1(rp requestParam) (*serverResponse, error) {
 	method := "GET"
 	if rp.method != "" {