テックメモ – ページ 42 – 自分用のメモです。内容が間違っていたり、作りかけで動作しないコードなどあるのでご注意ください。

2018-09-052021-11-02

MuuMuu + Xserver 独自ドメイン

以前、MuuMuuで取得したドメインがあって、NSをXserverに指定したまま放置していたのでこのドメインを活用する。メールはそのままXserverで、wwwのみVPSに回す。

MuuMuuでXserverのネームサーバー(ns[1-5].xserver.p)を指定する。
Xserverのサーバーパネル＞ドメイン設定
から対象ドメインを追加し、
サーバーパネル＞DNSレコード設定
から編集する。

AタイプのIPアドレスをVPSのアドレスに変更する。通常はやらないけど今回はアスタリスクを使ったサブドメインとwww付きを消して1つにしてしまう。

MXはホスト名と内容が同じになっているので、ホスト名をそのまま独自ドメインで、内容をXserverのドメイン(xxx.xsrv.jp)にする。

ホスト名 | A | 210.xxx.xxx.xx | 0
ホスト名 | MX | xxx.xsrv.jp | 0

これでしばらく待つと独自ドメインからSSHアクセスできる。

・DNSレコードについて

A：
ドメインとIPv4を関連づける

MX：
メールサーバー

CNAME：
別名

TXT：
ドメインに関連づけるテキスト情報。主に、メール送信の認証(SPFレコード)に利用される。受信サーバは送信もとアドレスのドメインのTXTレコードを取得しチェックする。

・SPFレコードについて

version qualifier mechanism
という組み合わせになる。

・version：
v=spf1固定

・qualifier：
mechanismでマッチしたらそのメールをどうするかを記号で指定する。

+：
正当なメール

-：
不当なメール(配信しない)

~：
不当なメール(配信する)

?：
指定なし

・mechanism：
送信もとアドレスとマッチするデータを指定する。

ip4：
送信アドレスが一致するか

mx：
MXレコードのIPアドレスと一致するか

a：
AレコードのIPアドレスと一致するか

参考として、
*.domain.com/TXT/v=spf1 +ip4:xxx.xxx.xxx.xxx ~all
ここでは、
+ip4:xxx.xxx.xxx.xxx
と
~all
の２つが指定されている。

例えば、XserverのDNSレコードはどうなっているか。
*.domain.com/TXT/v=spf1 +ip4:xxx.xxx.xxx.xxx ~all
domain.com/TXT/v=spf1 +ip4:xxx.xxx.xxx.xxx ~all
domain.com/A/xxx.xxx.xxx.xxx
*.domain.com/A/xxx.xxx.xxx.xxx
domain.com/MX/domain.com

2018-08-292020-05-06

golang テストで小さいプログラム

golangはじめて間もないので調べつつ色々試験中

標準入力から日付判断

package main

import (
	"bufio"
	"fmt"
	"os"
	"time"
)

func main() {

	today := time.Now().Format("2")

	if today == "29" {
		fmt.Println("hit")
		s := bufio.NewScanner(os.Stdin)
		s.Scan()
	}
}

package main

import (

"bufio"

"fmt"

"os"

"time"

)

func main() {

today := time.Now().Format("2")

if today == "29" {

fmt.Println("hit")

s := bufio.NewScanner(os.Stdin)

s.Scan()

}

SQLite接続

package main

import(
	_ "os"
	"fmt"
	"database/sql"

	_ "github.com/mattn/go-sqlite3"
)

func main(){

	fmt.Println("start")

	db, err := sql.Open("sqlite3", "./test.d")
	if err != nil{
		fmt.Println(err)
		return
	}

	defer db.Close()
	defer fmt.Println("db close")

	_, err = db.Exec("create table t1 (id int)")
	if err != nil{
		fmt.Println(err)
		//return
	}

	_, err = db.Exec("insert into t1 (id) values (2)")
	if err != nil{
		fmt.Println(err)
		return
	}

	var c int
	rows, err := db.Query("select count(*) as c from sqlite_master where name = 't1'")
	if err != nil{
		fmt.Println(err)
		return
	}
	defer rows.Close()
	defer fmt.Println("rows close")

	for rows.Next(){
		err := rows.Scan(&c)
		if err != nil{
			return
		}
		fmt.Println(c)
	}
	fmt.Println("end")
}

package main

import(

_ "os"

"fmt"

"database/sql"

_ "github.com/mattn/go-sqlite3"

)

func main(){

fmt.Println("start")

db, err := sql.Open("sqlite3", "./test.d")

if err != nil{

fmt.Println(err)

return

}

defer db.Close()

defer fmt.Println("db close")

_, err = db.Exec("create table t1 (id int)")

if err != nil{

fmt.Println(err)

//return

}

_, err = db.Exec("insert into t1 (id) values (2)")

if err != nil{

fmt.Println(err)

return

}

var c int

rows, err := db.Query("select count(*) as c from sqlite_master where name = 't1'")

if err != nil{

fmt.Println(err)

return

}

defer rows.Close()

defer fmt.Println("rows close")

for rows.Next(){

err := rows.Scan(&c)

if err != nil{

return

}

fmt.Println(c)

}

fmt.Println("end")

}

サーバー

package main
import (
	"fmt"
	"net/http"
)

type Str string
func (s Str) ServeHTTP(w http.ResponseWriter, r *http.Request){
	fmt.Fprint(w, s)
}

func main() {

	fmt.Println("server is running")

	/* HandleFunc */
	http.HandleFunc("/", handler)

	http.HandleFunc("/b", func(w http.ResponseWriter, r *http.Request){
		fmt.Fprint(w, "Hello b")
	})

	http.HandleFunc("/e", Rec)

	/* Handle */
	http.Handle("/c", Str("hello c"))//ServeHTTPを持った構造体を渡せばOK

	//ファイル配信
	http.Handle("/d", http.StripPrefix("/d", http.FileServer(http.Dir("file"))))
	http.ListenAndServe(":8000", nil)
}

func Rec(w http.ResponseWriter, r *http.Request){
	if r.Method == http.MethodGet{
		fmt.Fprint(w, r.URL.RawQuery)
	}
}

func handler(w http.ResponseWriter, r *http.Request){
	fmt.Fprint(w, "Hello a")
	//fmt.Fprint(w, &url.URL)
}

package main

import (

"fmt"

"net/http"

)

type Str string

func (s Str) ServeHTTP(w http.ResponseWriter, r *http.Request){

fmt.Fprint(w, s)

}

func main() {

fmt.Println("server is running")

/* HandleFunc */

http.HandleFunc("/", handler)

http.HandleFunc("/b", func(w http.ResponseWriter, r *http.Request){

fmt.Fprint(w, "Hello b")

})

http.HandleFunc("/e", Rec)

/* Handle */

http.Handle("/c", Str("hello c"))//ServeHTTPを持った構造体を渡せばOK

//ファイル配信

http.Handle("/d", http.StripPrefix("/d", http.FileServer(http.Dir("file"))))

http.ListenAndServe(":8000", nil)

}

func Rec(w http.ResponseWriter, r *http.Request){

if r.Method == http.MethodGet{

fmt.Fprint(w, r.URL.RawQuery)

}

func handler(w http.ResponseWriter, r *http.Request){

fmt.Fprint(w, "Hello a")

//fmt.Fprint(w, &url.URL)

}

SSH接続

package main
import(
	"io/ioutil"
	"golang.org/x/crypto/ssh"
)

func main(){
	ip := "xxx"
	port := "xxx"
	user := "xxx"

buf, err := ioutil.ReadFile("t.pem")
if err != nil{
	return
}
key, err := ssh.ParsePrivateKey(buf)
if err != nil{
	return
}

config := &ssh.ClientConfig{
	User: user,
	Auth: []ssh.AuthMethod{
		ssh.PublicKeys(key),
	},
	HostKeyCallback: ssh.InsecureIgnoreHostKey(),
}

conn, err := ssh.Dial("tcp", ip + ":" + port, config)
if err != nil{
	return
}
defer conn.Close()

session, err := conn.NewSession()
if err != nil{
	return
}
defer session.Close()

session.Run("echo -n > a.txt")

}

package main

import(

"io/ioutil"

"golang.org/x/crypto/ssh"

)

func main(){

ip := "xxx"

port := "xxx"

user := "xxx"

buf, err := ioutil.ReadFile("t.pem")

if err != nil{

return

}

key, err := ssh.ParsePrivateKey(buf)

if err != nil{

return

}

config := &ssh.ClientConfig{

User: user,

Auth: []ssh.AuthMethod{

ssh.PublicKeys(key),

HostKeyCallback: ssh.InsecureIgnoreHostKey(),

}

conn, err := ssh.Dial("tcp", ip + ":" + port, config)

if err != nil{

return

}

defer conn.Close()

session, err := conn.NewSession()

if err != nil{

return

}

defer session.Close()

session.Run("echo -n > a.txt")

}

他言語で言うクラス

package main

import(
  "fmt"
)

type greeting struct{
  words string
}

func (g *greeting) sayHello(){
  fmt.Println(g.words)
}

func main(){

  s := &greeting{
    words : "hello world",
  }

  s.sayHello() //hello world

}

package main

import(

"fmt"

)

type greeting struct{

words string

}

func (g *greeting) sayHello(){

fmt.Println(g.words)

}

func main(){

s := &greeting{

words : "hello world",

}

s.sayHello() //hello world

}

json読み込み

package main

import(
  "fmt"
  "io/ioutil"
  "encoding/json"
)

type Personal struct{
  Name string `json:"addr"`
  Age int
}

//こう書くとjsonのaddrキーがマッピングされる

func main(){

  b, err := ioutil.ReadFile("./data.json")
  if err != nil{
    panic(err)
  }

  //直接書く場合
  //b := []byte(`{ "name":"taro", "age":20 }`)

  var p Personal
  if err := json.Unmarshal(b, &p); err != nil{
    panic(err)
  }

  fmt.Println(p.Name)
}

package main

import(

"fmt"

"io/ioutil"

"encoding/json"

)

type Personal struct{

Name string `json:"addr"`

Age int

}

//こう書くとjsonのaddrキーがマッピングされる

func main(){

b, err := ioutil.ReadFile("./data.json")

if err != nil{

panic(err)

}

//直接書く場合

//b := []byte(`{ "name":"taro", "age":20 }`)

var p Personal

if err := json.Unmarshal(b, &p); err != nil{

panic(err)

}

fmt.Println(p.Name)

}

時間

package main

import(
  "time"
  "math/rand"
)

func main(){

  //日付取得
  println(time.Now().Format("2006-01-02"))

  //UNIXタイム
  println(time.Now().Unix())

  //乱数
  println(rand.Int63())

  //時刻Seed
  rand.Seed(time.Now().UnixNano())

  for i := 1; i <= 2; i++{
    //63bit
    println(rand.Int63())
    //n付きは範囲
    println(rand.Intn(10))
  }
}

package main

import(

"time"

"math/rand"

)

func main(){

//日付取得

println(time.Now().Format("2006-01-02"))

//UNIXタイム

println(time.Now().Unix())

//乱数

println(rand.Int63())

//時刻Seed

rand.Seed(time.Now().UnixNano())

for i := 1; i <= 2; i++{

//63bit

println(rand.Int63())

//n付きは範囲

println(rand.Intn(10))

}

2018-08-292020-05-06

golang インストールメモ

最近golangをはじめたので。

WSLインストール

sudo apt-get update
sudo apt-get install golang

バージョン確認
go version

> 1.6.2

環境確認
go env

.bashrcに追加
export GOPATH=”$HOME/go”
export PATH=”$GOPATH/bin:$PATH”

Db(SQLite)を使ってみる

go get github.com/mattn/go-sqlite3

package context: unrecognized import path “context”
というエラーがでる。

1.7ではcontextパッケージとして標準パッケージに仲間入りする。
とのことなのでアップデート

sudo apt-get install golang-1.9
sudo mv /usr/bin/go /usr/bin/go.old
sudo mv /usr/bin/gofmt /usr/bin/gofmt.old
sudo ln -s /usr/lib/go-1.9/bin/go /usr/bin/go
sudo ln -s /usr/lib/go-1.9/bin/gofmt /usr/bin/gofmt

これで入った。

Windows用にクロスコンパイル

WSLからだと通常こうなっているので、
GOOS=linux
以下の用にしてビルド
GOOS=windows go build hello.go

2018-08-29

VBS 起動にちょっとアラート

普通Gカレンダとか使うんだけど。

today = Day(Now())

'必要に応じて日を追加
If today = 1 Then MsgBox "何か書く"

'月末用
monthAdded = DateAdd("m", 1, Now)
nextMonth = DateValue(Year(monthAdded) & "/" & Month(monthAdded) & "/" & "1")
lastDay = Day(DateAdd("d", -1, nextMonth))

If today = lastDay Then MsgBox "何か書く"

today = Day(Now())

'必要に応じて日を追加

If today = 1 Then MsgBox "何か書く"

'月末用

monthAdded = DateAdd("m", 1, Now)

nextMonth = DateValue(Year(monthAdded) & "/" & Month(monthAdded) & "/" & "1")

lastDay = Day(DateAdd("d", -1, nextMonth))

If today = lastDay Then MsgBox "何か書く"

2018-08-222020-01-15

VBA シート間のコピー

シート間のコピー

Sub Excute()

Set w = Sheets("マスタ登録用")

Dim hayStack As Range: Set hayStack = Sheets("品目マスタ").Range("D15:D8462")

For r = 3 To 3592
  
  If (r Mod 5) = 0 Then DoEvents
  
  productName = x(w.Cells(r, 1).Text)
  productNote = x(w.Cells(r, 4).Text)
  productItem = x(w.Cells(r, 5).Text)
  productKg = x(w.Cells(r, 24).Text)
  productLength = x(w.Cells(r, 25).Text)
  productWidth = x(w.Cells(r, 26).Text)
  productHeight = x(w.Cells(r, 27).Text)

  If productName <> "" Then Call Pour(hayStack, productName, productNote, productItem, productKg, productLength, productWidth, productHeight)

  Application.StatusBar = r

Next r

Application.StatusBar = False
MsgBox "done"

End Sub

Function x(target)
target = Replace(target, vbCrLf, "")
target = Replace(target, vbCr, "")
target = Replace(target, vbLf, "")
x = target
End Function

Sub Pour(hayStack, productName, productNote, productItem, productKg, productLength, productWidth, productHeight)

Set w = Sheets("品目マスタ")

For Each c In hayStack

  If (c.Text = productName) Then
    w.Cells(c.Row, 187) = productNote
    If productItem <> "" Then t = "1"
    w.Cells(c.Row, 179) = t
    w.Cells(c.Row, 180) = productKg
    w.Cells(c.Row, 181) = productLength
    w.Cells(c.Row, 182) = productWidth
    w.Cells(c.Row, 183) = productHeight
  End If

Next

End Sub

Sub Excute()

Set w = Sheets("マスタ登録用")

Dim hayStack As Range: Set hayStack = Sheets("品目マスタ").Range("D15:D8462")

For r = 3 To 3592

If (r Mod 5) = 0 Then DoEvents

productName = x(w.Cells(r, 1).Text)

productNote = x(w.Cells(r, 4).Text)

productItem = x(w.Cells(r, 5).Text)

productKg = x(w.Cells(r, 24).Text)

productLength = x(w.Cells(r, 25).Text)

productWidth = x(w.Cells(r, 26).Text)

productHeight = x(w.Cells(r, 27).Text)

If productName <> "" Then Call Pour(hayStack, productName, productNote, productItem, productKg, productLength, productWidth, productHeight)

Application.StatusBar = r

Next r

Application.StatusBar = False

MsgBox "done"

End Sub

Function x(target)

target = Replace(target, vbCrLf, "")

target = Replace(target, vbCr, "")

target = Replace(target, vbLf, "")

x = target

End Function

Sub Pour(hayStack, productName, productNote, productItem, productKg, productLength, productWidth, productHeight)

Set w = Sheets("品目マスタ")

For Each c In hayStack

If (c.Text = productName) Then

w.Cells(c.Row, 187) = productNote

If productItem <> "" Then t = "1"

w.Cells(c.Row, 179) = t

w.Cells(c.Row, 180) = productKg

w.Cells(c.Row, 181) = productLength

w.Cells(c.Row, 182) = productWidth

w.Cells(c.Row, 183) = productHeight

End If

End Sub

2018-08-172020-05-05

C# Xamarin サンプル色々

Xamarinを少し触り始めたので。サンプル色々。

ボタンでアラート

var button = new Button()
{
    Text = "BUTTON"
};
button.Clicked += async (sender, e) =>
{
    var result = await DisplayAlert("タイトル", "本文", "YES", "NO");
};
Content = button;

var button = new Button()

{

Text = "BUTTON"

};

button.Clicked += async (sender, e) =>

{

var result = await DisplayAlert("タイトル", "本文", "YES", "NO");

};

Content = button;

ピッカー(選択リスト)

var piker = new Picker
{
    Title = "選択",
    VerticalOptions = LayoutOptions.Start
};
var ar = Enumerable.Range(0, 100).Select(n => string.Format("item{00}", n));
foreach (var a in ar)
{
    piker.Items.Add(a);
}
Content = piker;

var piker = new Picker

{

Title = "選択",

VerticalOptions = LayoutOptions.Start

};

var ar = Enumerable.Range(0, 100).Select(n => string.Format("item{00}", n));

foreach (var a in ar)

{

piker.Items.Add(a);

}

Content = piker;

タイマーとプログレスバー

var pbar = new ProgressBar
{
    WidthRequest = 300,
    HorizontalOptions = LayoutOptions.Center,
    VerticalOptions = LayoutOptions.CenterAndExpand
};
Device.StartTimer(TimeSpan.FromSeconds(0.1), () =>
{
    pbar.Progress += 0.01;
    return pbar.Progress != 1;
});
Content = pbar;

var pbar = new ProgressBar

{

WidthRequest = 300,

HorizontalOptions = LayoutOptions.Center,

VerticalOptions = LayoutOptions.CenterAndExpand

};

Device.StartTimer(TimeSpan.FromSeconds(0.1), () =>

{

pbar.Progress += 0.01;

return pbar.Progress != 1;

});

Content = pbar;

サーチバー(インプットボックス)

var sbar = new SearchBar
{
    Placeholder = "input",
    VerticalOptions = LayoutOptions.Start
};

sbar.SearchButtonPressed += (s, e) =>
{
    DisplayAlert("入力!", sbar.Text, "ClickMe!");
};
Content = sbar;

var sbar = new SearchBar

{

Placeholder = "input",

VerticalOptions = LayoutOptions.Start

};

sbar.SearchButtonPressed += (s, e) =>

{

DisplayAlert("入力!", sbar.Text, "ClickMe!");

};

Content = sbar;

リストビュー

ListView listView = new ListView
{
    ItemsSource = Enumerable.Range(1, 10).Select(x => string.Format("No{00}", x)).ToList()
};
//アタッチ
listView.ItemSelected += new EventHandler<SelectedItemChangedEventArgs>((object sender, SelectedItemChangedEventArgs e) =>
{

});
//アタッチ簡略
listView.ItemSelected += (s, e) =>
{
    DisplayAlert("", ((ListView)s).SelectedItem.ToString(), "OK");
};
Content = listView;

ListView listView = new ListView

{

ItemsSource = Enumerable.Range(1, 10).Select(x => string.Format("No{00}", x)).ToList()

};

//アタッチ

listView.ItemSelected += new EventHandler<SelectedItemChangedEventArgs>((object sender, SelectedItemChangedEventArgs e) =>

{

});

//アタッチ簡略

listView.ItemSelected += (s, e) =>

{

DisplayAlert("", ((ListView)s).SelectedItem.ToString(), "OK");

};

Content = listView;

2018-08-01

C# 定期的にコマンド実行

定期的にtracertを実行したかったので。

using System;
using System.Drawing;
using System.IO;
using System.Text.RegularExpressions;
using System.Diagnostics;
using System.Windows.Forms;

namespace Tracert
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();

            WindowState = FormWindowState.Minimized;
            ShowInTaskbar = false;

            Bitmap bitmap = new Bitmap(32, 32);
            Graphics graphics = Graphics.FromImage(bitmap);
            graphics.FillRectangle(Brushes.Green, graphics.VisibleClipBounds);

            NotifyIcon notifyIcon = new NotifyIcon();
            notifyIcon.Icon = Icon.FromHandle(bitmap.GetHicon());
            notifyIcon.Visible = true;
            notifyIcon.Click += new EventHandler((object sender, EventArgs e) => {
                MessageBox.Show("終了します。");
                Application.Exit();
            });

            Timer timer = new Timer();
            timer.Interval = 3600000;

            timer.Tick += new EventHandler((object sender, EventArgs e)=> {
                Execute();
            });
            timer.Start();
        }

        private void Execute()
        {
            using (Process process = new Process())
            {
                process.StartInfo.RedirectStandardOutput = true;
                process.StartInfo.CreateNoWindow = true;
                process.StartInfo.UseShellExecute = false;
                process.StartInfo.FileName = "tracert";
                process.StartInfo.Arguments = "192.168.5.1";
                process.Start();

                string result = "";
                using (StringReader sr = new StringReader(process.StandardOutput.ReadToEnd()))
                {
                    Regex regex = new Regex(@"ms");
                    while (sr.Peek() > -1)
                    {
                        string ln = sr.ReadLine();
                        if (regex.IsMatch(ln)) result += ln;
                    }
                }
                process.WaitForExit();
                result = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss") + " " + result;

                using (StreamWriter sw = new StreamWriter(Application.StartupPath + @"\dat.txt", true, System.Text.Encoding.UTF8))
                {
                    sw.Write(result + "\r\n");
                }
            }
        }
    }
}

using System;

using System.Drawing;

using System.IO;

using System.Text.RegularExpressions;

using System.Diagnostics;

using System.Windows.Forms;

namespace Tracert

{

public partial class Form1 : Form

{

public Form1()

{

InitializeComponent();

WindowState = FormWindowState.Minimized;

ShowInTaskbar = false;

Bitmap bitmap = new Bitmap(32, 32);

Graphics graphics = Graphics.FromImage(bitmap);

graphics.FillRectangle(Brushes.Green, graphics.VisibleClipBounds);

NotifyIcon notifyIcon = new NotifyIcon();

notifyIcon.Icon = Icon.FromHandle(bitmap.GetHicon());

notifyIcon.Visible = true;

notifyIcon.Click += new EventHandler((object sender, EventArgs e) => {

MessageBox.Show("終了します。");

Application.Exit();

});

Timer timer = new Timer();

timer.Interval = 3600000;

timer.Tick += new EventHandler((object sender, EventArgs e)=> {

Execute();

});

timer.Start();

}

private void Execute()

{

using (Process process = new Process())

{

process.StartInfo.RedirectStandardOutput = true;

process.StartInfo.CreateNoWindow = true;

process.StartInfo.UseShellExecute = false;

process.StartInfo.FileName = "tracert";

process.StartInfo.Arguments = "192.168.5.1";

process.Start();

string result = "";

using (StringReader sr = new StringReader(process.StandardOutput.ReadToEnd()))

{

Regex regex = new Regex(@"ms");

while (sr.Peek() > -1)

{

string ln = sr.ReadLine();

if (regex.IsMatch(ln)) result += ln;

}

process.WaitForExit();

result = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss") + " " + result;

using (StreamWriter sw = new StreamWriter(Application.StartupPath + @"\dat.txt", true, System.Text.Encoding.UTF8))

{

sw.Write(result + "\r\n");

}

2018-07-16

C# TCPを使ったサンプル

using System;
using System.Text;
using System.Net;
using System.Net.Sockets;
using System.Windows.Forms;

namespace TestChat
{
    public partial class Form2 : Form
    {
        public Form2()
        {
            InitializeComponent();

            new Server().Go(textBox1);

            button2.Click += new EventHandler((object sender, EventArgs e) => {
                button2.Enabled = false;
                new Client().Go(textBox3,textBox2,button2);
            });

        }
    }

    //public class Client
    //{
    //    public async void Go(TextBox address, TextBox message, Button button)
    //    {
    //        await Task.Run(()=> {
    //            try
    //            {
    //                using (var tcpClient = new TcpClient(address.Text, 2001))
    //                {
    //                    tcpClient.ReceiveTimeout = 100;
    //                    using (NetworkStream networkStream = tcpClient.GetStream())
    //                    {
    //                        byte[] buffer = Encoding.UTF8.GetBytes(message.Text);
    //                        networkStream.Write(buffer, 0, buffer.Length);
    //                    }
    //                }
    //            }
    //            catch(Exception e)
    //            {
    //                MessageBox.Show(e.Message);
    //            }
    //            button.BeginInvoke(new Action(()=> { button.Enabled = true; }));
    //        });
    //    }
    //}

    public class Client
    {
        public async void Go(TextBox address, TextBox message, Button button)
        {
            using (var tcpClient = new TcpClient())
            {
                await tcpClient.ConnectAsync(address.Text, 2001);

                using (NetworkStream networkStream = tcpClient.GetStream())
                {
                    byte[] buffer = Encoding.UTF8.GetBytes(message.Text);
                    networkStream.Write(buffer, 0, buffer.Length);
                }
            }
            button.Enabled = true;
        }
    }

    public class Server
    {
        public async void Go(TextBox textBox)
        {
            TcpListener tcpListener = new TcpListener(IPAddress.Any, 2001);
            tcpListener.Start();

            using (var tcpClient = await tcpListener.AcceptTcpClientAsync())
            {
                tcpListener.Stop();

                using (NetworkStream networkStream = tcpClient.GetStream())
                {
                    byte[] buffer = new byte[1024];
                    string message = "";

                    do
                    {
                        int byteSize = networkStream.Read(buffer, 0, buffer.Length);
                        message += Encoding.UTF8.GetString(buffer, 0, byteSize);

                    } while (networkStream.DataAvailable);
                    textBox.Text += message + "\r\n";
                }
            }
            Go(textBox);
        }
    }
}

using System;

using System.Text;

using System.Net;

using System.Net.Sockets;

using System.Windows.Forms;

namespace TestChat

{

public partial class Form2 : Form

{

public Form2()

{

InitializeComponent();

new Server().Go(textBox1);

button2.Click += new EventHandler((object sender, EventArgs e) => {

button2.Enabled = false;

new Client().Go(textBox3,textBox2,button2);

});

}

//public class Client

//{

// public async void Go(TextBox address, TextBox message, Button button)

// {

// await Task.Run(()=> {

// try

// {

// using (var tcpClient = new TcpClient(address.Text, 2001))

// {

// tcpClient.ReceiveTimeout = 100;

// using (NetworkStream networkStream = tcpClient.GetStream())

// {

// byte[] buffer = Encoding.UTF8.GetBytes(message.Text);

// networkStream.Write(buffer, 0, buffer.Length);

// }

// catch(Exception e)

// {

// MessageBox.Show(e.Message);

// }

// button.BeginInvoke(new Action(()=> { button.Enabled = true; }));

// });

// }

//}

public class Client

{

public async void Go(TextBox address, TextBox message, Button button)

{

using (var tcpClient = new TcpClient())

{

await tcpClient.ConnectAsync(address.Text, 2001);

using (NetworkStream networkStream = tcpClient.GetStream())

{

byte[] buffer = Encoding.UTF8.GetBytes(message.Text);

networkStream.Write(buffer, 0, buffer.Length);

}

button.Enabled = true;

}

public class Server

{

public async void Go(TextBox textBox)

{

TcpListener tcpListener = new TcpListener(IPAddress.Any, 2001);

tcpListener.Start();

using (var tcpClient = await tcpListener.AcceptTcpClientAsync())

{

tcpListener.Stop();

using (NetworkStream networkStream = tcpClient.GetStream())

{

byte[] buffer = new byte[1024];

string message = "";

{

int byteSize = networkStream.Read(buffer, 0, buffer.Length);

message += Encoding.UTF8.GetString(buffer, 0, byteSize);

} while (networkStream.DataAvailable);

textBox.Text += message + "\r\n";

}

Go(textBox);

}

2018-07-13

C# UDPを使ったメッセージ交換

UDPを使ったテストプログラム。

using System;
using System.Text;
using System.Linq;
using System.Collections.Generic;
using System.Windows.Forms;
using System.Net;
using System.Net.Sockets;

namespace TestChat
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();

            StartReceive();
            button1.Click += new EventHandler(SendMessage);
        }

        public class UdpState
        {
            public UdpClient UdpClient;
            public IPEndPoint IPEndPoint;
            public UdpState(UdpClient udpClient, IPEndPoint endPoint)
            {
                UdpClient = udpClient;
                IPEndPoint = endPoint;
            }
        }

        public class Message
        {
            private List<string> TextList = new List<string>();
            private static Message Instance = null;

            public static Message GetInstance()
            {
                if(Instance == null)
                {
                    Instance = new Message();
                }
                return Instance;
            }

            public void SetMessage(string text)
            {
                TextList.Add(text);
            }

            public string GetMessage()
            {
                return string.Join("\r\n", TextList.ToArray().Reverse());
            }

        }

        private void StartReceive()
        {
            IPEndPoint endPoint = new IPEndPoint(IPAddress.Any, 2002);
            UdpClient udpClient = new UdpClient(endPoint);
            udpClient.BeginReceive(ReceiveCallback, new UdpState(udpClient, endPoint));
        }

        private void ReceiveCallback(IAsyncResult ar)
        {
            UdpClient udpClient = ((UdpState)ar.AsyncState).UdpClient;
            IPEndPoint endPoint = ((UdpState)ar.AsyncState).IPEndPoint;

            byte[] receiveByte = udpClient.EndReceive(ar,ref endPoint);
            string receiveString = Encoding.UTF8.GetString(receiveByte);
            textBox1.BeginInvoke(new Action<string>(ShowReceive), receiveString);

            udpClient.BeginReceive(ReceiveCallback, new UdpState(udpClient, endPoint));
        }

        private void ShowReceive(string s)
        {
            Message message = Message.GetInstance();
            message.SetMessage(s);
            textBox1.Text = message.GetMessage();
        }

        private async void SendMessage(object sender, EventArgs e)
        {
            UdpClient udpClient = new UdpClient();
            udpClient.Connect(new IPEndPoint(IPAddress.Parse("192.168.11.18"), 2002));

            byte[] sendByte = Encoding.UTF8.GetBytes(textBox2.Text);
            await udpClient.SendAsync(sendByte, sendByte.Length);
            udpClient.Close();
        }
    }
}

using System;

using System.Text;

using System.Linq;

using System.Collections.Generic;

using System.Windows.Forms;

using System.Net;

using System.Net.Sockets;

namespace TestChat

{

public partial class Form1 : Form

{

public Form1()

{

InitializeComponent();

StartReceive();

button1.Click += new EventHandler(SendMessage);

}

public class UdpState

{

public UdpClient UdpClient;

public IPEndPoint IPEndPoint;

public UdpState(UdpClient udpClient, IPEndPoint endPoint)

{

UdpClient = udpClient;

IPEndPoint = endPoint;

}

public class Message

{

private List<string> TextList = new List<string>();

private static Message Instance = null;

public static Message GetInstance()

{

if(Instance == null)

{

Instance = new Message();

}

return Instance;

}

public void SetMessage(string text)

{

TextList.Add(text);

}

public string GetMessage()

{

return string.Join("\r\n", TextList.ToArray().Reverse());

}

private void StartReceive()

{

IPEndPoint endPoint = new IPEndPoint(IPAddress.Any, 2002);

UdpClient udpClient = new UdpClient(endPoint);

udpClient.BeginReceive(ReceiveCallback, new UdpState(udpClient, endPoint));

}

private void ReceiveCallback(IAsyncResult ar)

{

UdpClient udpClient = ((UdpState)ar.AsyncState).UdpClient;

IPEndPoint endPoint = ((UdpState)ar.AsyncState).IPEndPoint;

byte[] receiveByte = udpClient.EndReceive(ar,ref endPoint);

string receiveString = Encoding.UTF8.GetString(receiveByte);

textBox1.BeginInvoke(new Action<string>(ShowReceive), receiveString);

udpClient.BeginReceive(ReceiveCallback, new UdpState(udpClient, endPoint));

}

private void ShowReceive(string s)

{

Message message = Message.GetInstance();

message.SetMessage(s);

textBox1.Text = message.GetMessage();

}

private async void SendMessage(object sender, EventArgs e)

{

UdpClient udpClient = new UdpClient();

udpClient.Connect(new IPEndPoint(IPAddress.Parse("192.168.11.18"), 2002));

byte[] sendByte = Encoding.UTF8.GetBytes(textBox2.Text);

await udpClient.SendAsync(sendByte, sendByte.Length);

udpClient.Close();

}

2018-07-032018-07-03

C# PC情報取得

PC名、ユーザー名、インストール済みアプリ、ネットワーク情報を取得

using System;
using System.Collections.Generic;
using System.Windows.Forms;

using System.Net.NetworkInformation;

namespace PC情報
{
    static class Program
    {
        /// <summary>
        /// アプリケーションのメイン エントリ ポイントです。
        /// </summary>
        [STAThread]
        static void Main()
        {
            //Application.EnableVisualStyles();
            //Application.SetCompatibleTextRenderingDefault(false);
            //Application.Run(new Form1());

            using (System.IO.StreamWriter sw = new System.IO.StreamWriter(Application.StartupPath + @"\info.txt",false,System.Text.Encoding.GetEncoding("sjis")))
            {
                sw.Write(GetRegDisplayName(@"SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall") + "\n\n");
                sw.Write(GetRegDisplayName(@"SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall") + "\n\n");
                sw.Write(GetNicInfo());
                sw.Write("OS Name: " + GetOsType() + "\n\n");
                sw.Write("OS Version: " + Environment.OSVersion.ToString() + "\n\n");
                sw.Write("OS Bit: " + (Environment.Is64BitOperatingSystem ? "64bit" : "32bit") + "\n\n");
                sw.Write("PC Name: " + Environment.MachineName + "\n\n");
                sw.Write("User Name: " + Environment.UserName);
            }
            MessageBox.Show("終了しました。");
        }

        static string GetOsType()
        {
            const string Path = @"SOFTWARE\Microsoft\Windows NT\CurrentVersion";
            var key = Microsoft.Win32.Registry.LocalMachine.OpenSubKey(Path, false);
            return (string)key.GetValue("ProductName", "", Microsoft.Win32.RegistryValueOptions.DoNotExpandEnvironmentNames);
        }

        static string GetNicInfo()
        {
            string infoString = "";
            foreach (NetworkInterface interfaces in NetworkInterface.GetAllNetworkInterfaces())
            {
                if (interfaces.OperationalStatus != OperationalStatus.Up) continue;

                foreach(var unicast in interfaces.GetIPProperties().UnicastAddresses)
                {
                    if(unicast.Address.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork)
                    {
                        infoString += "NIC Name: " + interfaces.Name + "\n" +
                        "MAC Address: " + interfaces.GetPhysicalAddress() + "\n" +
                        "IP Address: " + unicast.Address + "\n\n";
                    }
                }

            }
            return infoString;
        }

        static string GetRegDisplayName(string regPath)
        {
            Microsoft.Win32.RegistryKey targetReg = Microsoft.Win32.Registry.LocalMachine.OpenSubKey(regPath, false);
            if (targetReg == null) return "";

            List<string> displayNameList = new List<string>();
            foreach (string subKey in targetReg.GetSubKeyNames())
            {
                Microsoft.Win32.RegistryKey appkey = Microsoft.Win32.Registry.LocalMachine.OpenSubKey(regPath + "\\" + subKey, false);
                if (appkey.GetValue("DisplayName") == null) continue;

                displayNameList.Add(appkey.GetValue("DisplayName").ToString());
            }
            return string.Join("\n", displayNameList.ToArray());
        }
    }
}

using System;

using System.Collections.Generic;

using System.Windows.Forms;

using System.Net.NetworkInformation;

namespace PC情報

{

static class Program

{

/// <summary>

/// アプリケーションのメインエントリポイントです。

/// </summary>

[STAThread]

static void Main()

{

//Application.EnableVisualStyles();

//Application.SetCompatibleTextRenderingDefault(false);

//Application.Run(new Form1());

using (System.IO.StreamWriter sw = new System.IO.StreamWriter(Application.StartupPath + @"\info.txt",false,System.Text.Encoding.GetEncoding("sjis")))

{

sw.Write(GetRegDisplayName(@"SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall") + "\n\n");

sw.Write(GetRegDisplayName(@"SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall") + "\n\n");

sw.Write(GetNicInfo());

sw.Write("OS Name: " + GetOsType() + "\n\n");

sw.Write("OS Version: " + Environment.OSVersion.ToString() + "\n\n");

sw.Write("OS Bit: " + (Environment.Is64BitOperatingSystem ? "64bit" : "32bit") + "\n\n");

sw.Write("PC Name: " + Environment.MachineName + "\n\n");

sw.Write("User Name: " + Environment.UserName);

}

MessageBox.Show("終了しました。");

}

static string GetOsType()

{

const string Path = @"SOFTWARE\Microsoft\Windows NT\CurrentVersion";

var key = Microsoft.Win32.Registry.LocalMachine.OpenSubKey(Path, false);

return (string)key.GetValue("ProductName", "", Microsoft.Win32.RegistryValueOptions.DoNotExpandEnvironmentNames);

}

static string GetNicInfo()

{

string infoString = "";

foreach (NetworkInterface interfaces in NetworkInterface.GetAllNetworkInterfaces())

{

if (interfaces.OperationalStatus != OperationalStatus.Up) continue;

foreach(var unicast in interfaces.GetIPProperties().UnicastAddresses)

{

if(unicast.Address.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork)

{

infoString += "NIC Name: " + interfaces.Name + "\n" +

"MAC Address: " + interfaces.GetPhysicalAddress() + "\n" +

"IP Address: " + unicast.Address + "\n\n";

}

return infoString;

}

static string GetRegDisplayName(string regPath)

{

Microsoft.Win32.RegistryKey targetReg = Microsoft.Win32.Registry.LocalMachine.OpenSubKey(regPath, false);

if (targetReg == null) return "";

List<string> displayNameList = new List<string>();

foreach (string subKey in targetReg.GetSubKeyNames())

{

Microsoft.Win32.RegistryKey appkey = Microsoft.Win32.Registry.LocalMachine.OpenSubKey(regPath + "\\" + subKey, false);

if (appkey.GetValue("DisplayName") == null) continue;

displayNameList.Add(appkey.GetValue("DisplayName").ToString());

}

return string.Join("\n", displayNameList.ToArray());

}