snapshot of https://github.com/nats-io/nats-server.git (main, 2026-09-15; blobs > 131072B omitted)

server/ping_test.go

@@ -0,0 +1,68 @@
+// Copyright 2015-2025 The NATS Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package server
+
+import (
+	"bufio"
+	"fmt"
+	"net"
+	"testing"
+	"time"
+)
+
+const PING_CLIENT_PORT = 11228
+
+var DefaultPingOptions = Options{
+	Host:         "127.0.0.1",
+	Port:         PING_CLIENT_PORT,
+	NoLog:        true,
+	NoSigs:       true,
+	PingInterval: 50 * time.Millisecond,
+}
+
+func TestPing(t *testing.T) {
+	o := DefaultPingOptions
+	o.DisableShortFirstPing = true
+	s := RunServer(&o)
+	defer s.Shutdown()
+
+	c, err := net.Dial("tcp", fmt.Sprintf("127.0.0.1:%d", PING_CLIENT_PORT))
+	if err != nil {
+		t.Fatalf("Error connecting: %v", err)
+	}
+	defer c.Close()
+	br := bufio.NewReader(c)
+	// Wait for INFO
+	br.ReadLine()
+	// Send CONNECT
+	c.Write([]byte("CONNECT {\"verbose\":false}\r\nPING\r\n"))
+	// Wait for first PONG
+	br.ReadLine()
+	// Wait for PING
+	start := time.Now()
+	for i := 0; i < 3; i++ {
+		l, _, err := br.ReadLine()
+		if err != nil {
+			t.Fatalf("Error: %v", err)
+		}
+		if string(l) != "PING" {
+			t.Fatalf("Expected PING, got %q", l)
+		}
+		if dur := time.Since(start); dur < 25*time.Millisecond || dur > 75*time.Millisecond {
+			t.Fatalf("Pings duration off: %v", dur)
+		}
+		c.Write([]byte(pongProto))
+		start = time.Now()
+	}
+}