From b791bb6cdf470ad08e2d32dc5a7211922948a9c4 Mon Sep 17 00:00:00 2001
From: Marten Seemann <martenseemann@gmail.com>
Date: Tue, 3 Jan 2023 17:17:06 +1300
Subject: [PATCH 1/2] add a benchmark integration test for performing
 handshakes

---
 integrationtests/self/benchmark_test.go  | 45 ++++++++++++++++++++++++
 integrationtests/self/self_suite_test.go |  8 ++---
 2 files changed, 49 insertions(+), 4 deletions(-)
 create mode 100644 integrationtests/self/benchmark_test.go

diff --git a/integrationtests/self/benchmark_test.go b/integrationtests/self/benchmark_test.go
new file mode 100644
index 00000000..9030e8bf
--- /dev/null
+++ b/integrationtests/self/benchmark_test.go
@@ -0,0 +1,45 @@
+package self_test
+
+import (
+	"context"
+	"net"
+	"testing"
+
+	"github.com/quic-go/quic-go"
+)
+
+func BenchmarkHandshake(b *testing.B) {
+	b.ReportAllocs()
+
+	ln, err := quic.ListenAddr("localhost:0", tlsConfig, nil)
+	if err != nil {
+		b.Fatal(err)
+	}
+	defer ln.Close()
+
+	connChan := make(chan quic.Connection, 1)
+	go func() {
+		for {
+			conn, err := ln.Accept(context.Background())
+			if err != nil {
+				return
+			}
+			connChan <- conn
+		}
+	}()
+
+	conn, err := net.ListenUDP("udp", nil)
+	if err != nil {
+		b.Fatal(err)
+	}
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		c, err := quic.Dial(conn, ln.Addr(), "localhost", tlsClientConfig, nil)
+		if err != nil {
+			b.Fatal(err)
+		}
+		<-connChan
+		c.CloseWithError(0, "")
+	}
+}
diff --git a/integrationtests/self/self_suite_test.go b/integrationtests/self/self_suite_test.go
index 85955546..943b8753 100644
--- a/integrationtests/self/self_suite_test.go
+++ b/integrationtests/self/self_suite_test.go
@@ -106,10 +106,6 @@ var (
 func init() {
 	flag.StringVar(&logFileName, "logfile", "", "log file")
 	flag.BoolVar(&enableQlog, "qlog", false, "enable qlog")
-}
-
-var _ = BeforeSuite(func() {
-	mrand.Seed(GinkgoRandomSeed())
 
 	ca, caPrivateKey, err := generateCA()
 	if err != nil {
@@ -138,6 +134,10 @@ var _ = BeforeSuite(func() {
 		RootCAs:    root,
 		NextProtos: []string{alpn},
 	}
+}
+
+var _ = BeforeSuite(func() {
+	mrand.Seed(GinkgoRandomSeed())
 
 	if enableQlog {
 		quicConfigTracer = qlog.NewTracer(func(p logging.Perspective, connectionID []byte) io.WriteCloser {

From 97dae87bf4ceb11d98ff6c192e93c51ba820e067 Mon Sep 17 00:00:00 2001
From: Marten Seemann <martenseemann@gmail.com>
Date: Sat, 4 Feb 2023 18:42:49 +1300
Subject: [PATCH 2/2] add a benchmark allocation test for opening / accepting
 streams

---
 integrationtests/self/benchmark_test.go | 47 +++++++++++++++++++++++++
 1 file changed, 47 insertions(+)

diff --git a/integrationtests/self/benchmark_test.go b/integrationtests/self/benchmark_test.go
index 9030e8bf..eaab654a 100644
--- a/integrationtests/self/benchmark_test.go
+++ b/integrationtests/self/benchmark_test.go
@@ -2,6 +2,7 @@ package self_test
 
 import (
 	"context"
+	"fmt"
 	"net"
 	"testing"
 
@@ -43,3 +44,49 @@ func BenchmarkHandshake(b *testing.B) {
 		c.CloseWithError(0, "")
 	}
 }
+
+func BenchmarkStreamChurn(b *testing.B) {
+	b.ReportAllocs()
+
+	ln, err := quic.ListenAddr("localhost:0", tlsConfig, &quic.Config{MaxIncomingStreams: 1e10})
+	if err != nil {
+		b.Fatal(err)
+	}
+	defer ln.Close()
+
+	errChan := make(chan error, 1)
+	go func() {
+		conn, err := ln.Accept(context.Background())
+		if err != nil {
+			errChan <- err
+			return
+		}
+		close(errChan)
+		for {
+			str, err := conn.AcceptStream(context.Background())
+			if err != nil {
+				return
+			}
+			str.Close()
+		}
+	}()
+
+	c, err := quic.DialAddr(fmt.Sprintf("localhost:%d", ln.Addr().(*net.UDPAddr).Port), tlsClientConfig, nil)
+	if err != nil {
+		b.Fatal(err)
+	}
+	if err := <-errChan; err != nil {
+		b.Fatal(err)
+	}
+
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		str, err := c.OpenStreamSync(context.Background())
+		if err != nil {
+			b.Fatal(err)
+		}
+		if err := str.Close(); err != nil {
+			b.Fatal(err)
+		}
+	}
+}