feat: implement hotomoe-speedchecker

.editorconfig

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+root = true
+
+[*]
+indent_style = space
+indent_size = 2
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*.go]
+indent_style = tab
+
+[*.bat]
+end_of_line = crlf
+charset = unset

.gitignore

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+dist

assets/syso.json

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+{
+  "Icons": [
+    {
+      "ID": 1,
+      "Path": "assets/icon.ico"
+    }
+  ],
+  "VersionInfos": [
+    {
+      "ID": 1,
+      "StringTables": [
+        {
+          "Language": "0409",
+          "Charset": "04b0",
+          "Strings": {
+            "CompanyName": "hotomoe",
+            "FileDescription": "hotomoe network checker",
+            "InternalName": "hotomoe-speedchecker",
+            "LegalCopyright": "\u00a9 hotomoe, All rights reserved.",
+            "OriginalFilename": "hotomoe-network-checker.exe",
+            "ProductName": "hotomoe-network-checker"
+          }
+        }
+      ],
+      "Translations": [
+        {
+          "Language": "0409",
+          "Charset": "04b0"
+        }
+      ]
+    }
+  ]
+}

go.mod

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+module hotomoe-speedchecker
+
+go 1.20

main.go

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+package main
+
+import (
+	"bufio"
+	"context"
+	"crypto/tls"
+	"encoding/json"
+	"net"
+	"net/http"
+	"os"
+	"time"
+)
+
+type IfconfigInfo struct {
+	IP         string `json:"ip"`
+	IPDecimal  int    `json:"ip_decimal"`
+	Country    string `json:"country"`
+	CountryIso string `json:"country_iso"`
+	CountryEu  bool   `json:"country_eu"`
+	Asn        string `json:"asn"`
+	AsnOrg     string `json:"asn_org"`
+	Hostname   string `json:"hostname"`
+}
+
+func main() {
+	http.DefaultTransport.(*http.Transport).TLSClientConfig = &tls.Config{InsecureSkipVerify: true}
+
+	hosts := []string{"hoto.moe", "jp1.hotomoe.net", "us1.hotomoe.net", "jp1-cf.hotomoe.net", "us1-cf.hotomoe.net"}
+
+	info, err := getIfconfigInfo("")
+	if err == nil {
+		println("Client IP:", info.IP)
+		println("Client Country:", info.Country)
+		println("Client ASN:", info.Asn)
+	} else {
+		panic("Failed to get client IP")
+	}
+
+	println()
+
+	for _, host := range hosts {
+		println("Host:", host)
+
+		ip := getIpAddress(host)
+		println("IP:", ip)
+
+		info, err := getIfconfigInfo(ip)
+		if err == nil {
+			println("ASN:", info.Asn)
+		}
+		latency := getLatency(host)
+		println("Latency:", latency, "ms")
+
+		println()
+	}
+
+	println("Press Enter to exit")
+	bufio.NewReader(os.Stdin).ReadBytes('\n')
+}
+
+func getLatency(host string) int64 {
+	currentTime := time.Now().UnixMilli()
+
+	resp, err := http.Get("https://" + host)
+	if err != nil {
+		return -1
+	}
+	defer resp.Body.Close()
+
+	latency := time.Now().UnixMilli() - currentTime
+
+	return latency
+}
+
+func getIpAddress(dnsName string) string {
+	ips, err := net.DefaultResolver.LookupNetIP(context.Background(), "ip4", dnsName)
+	if err != nil {
+		return "unknown"
+	}
+	return ips[0].String()
+}
+
+func getIfconfigInfo(ip string) (IfconfigInfo, error) {
+	var info IfconfigInfo
+
+	resp, err := http.Get("https://ifconfig.co/json?ip=" + ip)
+	if err != nil {
+		return info, err
+	}
+	defer resp.Body.Close()
+
+	json.NewDecoder(resp.Body).Decode(&info)
+
+	return info, nil
+}

scripts/build.bat

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+for /f "delims=" %%A in ('git rev-parse --show-toplevel') do (cd %%A)
+copy /Y assets\syso.json syso.json
+%USERPROFILE%\go\bin\syso.exe
+del syso.json
+SET GOOS=windows& go build  -ldflags "-s -w" -o "dist/hnc-windows-amd64.exe"
+SET GOOS=linux& go build  -ldflags "-s -w" -o "dist/hnc-linux-amd64"
+SET GOOS=darwin& go build  -ldflags "-s -w" -o "dist/hnc-darwin-amd64"
+del out.syso
+upx --best --lzma "dist/hnc-windows-amd64.exe"
+upx --best --lzma "dist/hnc-linux-amd64"
+REM upx --best --lzma "dist/hnc-darwin-amd64"