add files

.github/workflows/build.yml

@@ -0,0 +1,15 @@
+name: Build
+
+on: [push, pull_request]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-go@v5
+        with:
+          go-version: "1.22"
+      - run: go install mvdan.cc/garble@latest
+      - run: garble -tiny build wowPing.go
+      - run: ./wowPing

README.md

@@ -1,2 +1 @@
 # wow-server-ping-go
-

go.mod

@@ -0,0 +1,3 @@
+module github.com/egoroof/wow-server-ping-go
+
+go 1.22.1

pkg/ping/arguments.go

@@ -0,0 +1,64 @@
+package ping
+
+import (
+	"strconv"
+	"strings"
+)
+
+const REQUEST_COUNT = 4
+const TIMEOUT = 1000
+const SERVER_GROUP = "x1"
+
+type Params struct {
+	RequestCount int
+	Timeout      int
+	ServerGroup  string
+}
+
+func parseIntOrDefault(value string, def int) int {
+	i, err := strconv.Atoi(value)
+	if err != nil {
+		return def
+	}
+
+	return i
+}
+
+// hard coded
+func ParseArguments(args []string) Params {
+	params := Params{
+		RequestCount: REQUEST_COUNT,
+		Timeout:      TIMEOUT,
+		ServerGroup:  SERVER_GROUP,
+	}
+	for _, arg := range args {
+		// -n=1 -t=100 -s=Fun
+		parts := strings.Split(arg, "=")
+		if len(parts) != 2 || len(parts[0]) < 2 {
+			continue
+		}
+
+		param := parts[0][1:] // -n -> n
+		value := parts[1]
+
+		if param == "n" {
+			params.RequestCount = parseIntOrDefault(value, REQUEST_COUNT)
+		}
+
+		if param == "t" {
+			params.Timeout = parseIntOrDefault(value, TIMEOUT)
+		}
+
+		if param == "s" {
+			for _, group := range Servers {
+				if group.Name == value {
+					params.ServerGroup = value
+					break
+				}
+			}
+
+		}
+	}
+
+	return params
+}

pkg/ping/math.go

@@ -0,0 +1,37 @@
+package ping
+
+import (
+	"math"
+)
+
+func Avg(values []int) int {
+	if len(values) == 0 {
+		return 0
+	}
+
+	sum := 0
+	for _, elem := range values {
+		sum += elem
+	}
+
+	return sum / len(values)
+}
+
+func Jitter(values []int) int {
+	if len(values) == 0 {
+		return 0
+	}
+
+	min := math.MaxInt
+	max := 0
+	for _, value := range values {
+		if min > value {
+			min = value
+		}
+		if max < value {
+			max = value
+		}
+	}
+
+	return (max - min) / 2
+}

pkg/ping/net.go

@@ -0,0 +1,52 @@
+package ping
+
+import (
+	"bytes"
+	"encoding/binary"
+	"fmt"
+	"io"
+	"net"
+	"time"
+)
+
+type result struct {
+	Status           string
+	ResponseDuration time.Duration
+}
+
+func OpenConnection(host string, port, timeout int) (result, error) {
+	address := fmt.Sprintf("%v:%v", host, port)
+	conn, err := net.DialTimeout("tcp", address, time.Millisecond*time.Duration(timeout))
+	connectTime := time.Now()
+	if err != nil {
+		return result{}, err
+	}
+	defer conn.Close()
+
+	buf := make([]byte, 4)
+	conn.SetDeadline(connectTime.Add(time.Millisecond * time.Duration(timeout)))
+	_, err = conn.Read(buf)
+	responseTime := time.Now()
+	if err != nil && err != io.EOF {
+		return result{}, err
+	}
+
+	var opcode uint16
+	reader := bytes.NewReader(buf[2:4])
+	err = binary.Read(reader, binary.LittleEndian, &opcode)
+	if err != nil {
+		return result{}, err
+	}
+
+	responseDuration := responseTime.Sub(connectTime).Round(time.Millisecond)
+
+	status := "fail"
+	if opcode == SMSG_AUTH_CHALLENGE {
+		status = "success"
+	}
+
+	return result{
+		Status:           status,
+		ResponseDuration: responseDuration,
+	}, nil
+}

pkg/ping/opcodes.go

@@ -0,0 +1,4 @@
+package ping
+
+// https://wowdev.wiki/Opcodes
+const SMSG_AUTH_CHALLENGE = 0x1ec

pkg/ping/servers.go

@@ -0,0 +1,165 @@
+package ping
+
+type server struct {
+	Name string
+	Host string
+	Port int
+}
+
+type serverGroup struct {
+	Name string
+	List []server
+}
+
+var Servers = []serverGroup{
+	{
+		Name: "local",
+		List: []server{
+			{
+				Name: "local",
+				Host: "127.0.0.1",
+				Port: 8085,
+			},
+		},
+	},
+	{
+		Name: "x1",
+		List: []server{
+			{
+				Name: "WoW Circle 3.3.5a x1",
+				Host: "212.41.28.25",
+				Port: 11294,
+			},
+			{
+				Name: "WoW Circle 3.3.5a x1 [DE]",
+				Host: "194.247.187.187",
+				Port: 11294,
+			},
+			{
+				Name: "WoW Circle 3.3.5a x1 [FIN]",
+				Host: "193.84.2.209",
+				Port: 11294,
+			},
+			{
+				Name: "WoW Circle 3.3.5a x1 [NL]",
+				Host: "31.207.45.133",
+				Port: 11294,
+			},
+			{
+				Name: "WoW Circle 3.3.5a x1 [MSK]",
+				Host: "45.138.163.171",
+				Port: 11294,
+			},
+			{
+				Name: "WoW Circle 3.3.5a x1 [NSK]",
+				Host: "79.141.77.15",
+				Port: 11294,
+			},
+		},
+	},
+	{
+		Name: "x5",
+		List: []server{
+			{
+				Name: "WoW Circle 3.3.5a x5",
+				Host: "212.41.28.25",
+				Port: 10540,
+			},
+			{
+				Name: "WoW Circle 3.3.5a x5 [DE]",
+				Host: "194.247.187.187",
+				Port: 10540,
+			},
+			{
+				Name: "WoW Circle 3.3.5a x5 [FIN]",
+				Host: "193.84.2.209",
+				Port: 10540,
+			},
+			{
+				Name: "WoW Circle 3.3.5a x5 [NL]",
+				Host: "31.207.45.133",
+				Port: 10540,
+			},
+			{
+				Name: "WoW Circle 3.3.5a x5 [MSK]",
+				Host: "45.138.163.171",
+				Port: 10540,
+			},
+			{
+				Name: "WoW Circle 3.3.5a x5 [NSK]",
+				Host: "79.141.77.15",
+				Port: 10540,
+			},
+		},
+	},
+	{
+		Name: "x100",
+		List: []server{
+			{
+				Name: "WoW Circle 3.3.5a x100",
+				Host: "212.41.28.25",
+				Port: 12742,
+			},
+			{
+				Name: "WoW Circle 3.3.5a x100 [DE]",
+				Host: "194.247.187.187",
+				Port: 12742,
+			},
+			{
+				Name: "WoW Circle 3.3.5a x100 [FIN]",
+				Host: "193.84.2.209",
+				Port: 12742,
+			},
+			{
+				Name: "WoW Circle 3.3.5a x100 [NL]",
+				Host: "31.207.45.133",
+				Port: 12742,
+			},
+			{
+				Name: "WoW Circle 3.3.5a x100 [MSK]",
+				Host: "45.138.163.171",
+				Port: 12742,
+			},
+			{
+				Name: "WoW Circle 3.3.5a x100 [NSK]",
+				Host: "79.141.77.15",
+				Port: 12742,
+			},
+		},
+	},
+	{
+		Name: "Fun",
+		List: []server{
+			{
+				Name: "WoW Circle 3.3.5a Fun",
+				Host: "87.228.3.124",
+				Port: 12373,
+			},
+			{
+				Name: "WoW Circle 3.3.5a Fun [DE]",
+				Host: "194.247.187.187",
+				Port: 12373,
+			},
+			{
+				Name: "WoW Circle 3.3.5a Fun [FIN]",
+				Host: "193.84.2.209",
+				Port: 12373,
+			},
+			{
+				Name: "WoW Circle 3.3.5a Fun [NL]",
+				Host: "31.207.45.133",
+				Port: 12373,
+			},
+			{
+				Name: "WoW Circle 3.3.5a Fun [MSK]",
+				Host: "45.138.163.171",
+				Port: 12373,
+			},
+			{
+				Name: "WoW Circle 3.3.5a Fun [NSK]",
+				Host: "79.141.77.15",
+				Port: 12373,
+			},
+		},
+	},
+}