TCP端口连通性检测工具-tcping

TCPING介绍 tcping 是由美国人 Eli Fulkerson先生用C++ 编写的一个开源网络检测工具;你可以下载可执行文件，也可以下载源码自行编译。 Offical website: https://download.elifulkerson.com/files/tcping/0.39/ tcping和ping类似，也是用于检测网络连通性的一个工具。不同于ping的是，tcping 可以检查端口，更多的用法请在程序中执行？来查阅。程序的帮助信息使用tcping检测应用程序的端口延迟从Eli Fulkerson 的网站下载下来，通过命令行的方式来运行在程序所在目录输入程序和目标地址进行检测 .\tcping.exe google.com 443 //.\tcping.exe 目标地址/域名目标端口即可获得结果，也可以在程序后面添加参数 .\tcping.exe -t google.com 443 //.\tcping.exe -t 目标地址/域名目标端口 (-t长ping) .\tcping.exe -h google.com //.\tcping.exe -h 目标地址/域名目标端口示例图使用tcping来检查网络游戏的网络波动当我接到有用户反馈网络游戏延迟高或者连接不上的时候，通常我会使用tcping，tracert，nslookup，ping 这几个命令来协助排查故障；总结一下几个步骤如下拿到与游戏相关的服务器地址有时候游戏服务器是通过域名连接，我会使用nslookup检查解析地址使用ping检查基本的延迟状态有些游戏服务器禁ping，我会使用tracert 来跟踪路由，顺便找一下游戏连接的端口（后面使用tcping检查端口）使用tracert跟踪路由运营商链路调整有时候会影响游戏体验；某个节点断掉tracert可以协助你判断路由节点的问题使用tcping检查游戏服务器端口延迟和是否开放有些游戏是UDP协议，我会用hping，或者nc。基本上tcping已经很够用所以我这里只介绍tcping。前面的文章使用 PsPing进行网络测试https://www.itiohub.com/share/psping.html 以上所述内容均以Windows操作系统为主。如果你有其它更好用的工具，欢迎在下方留言分享。

November 15, 2022 0comments 35hotness 0likes Read all

What is Classes in C#? Objects Access Modifiers https://learn.microsoft.com/en-us/dotnet/csharp/language-reference/keywords/access-modifiers https://www.cnblogs.com/xinaixia/p/5775471.html Code using System; //class declaration public class Car { //instance 6 variables String name; String color; String transmission; String bodytype; int seat; int year; //constructor declaration of class public Car(String name, String color, String transmission, String bodytype, int seat, int year) { this.name = name; this.color = color; this.transmission = transmission; this.bodytype = bodytype; this.seat = seat; this.year = year; } //property 6 public String getName() { return name; } public String getColor() { return color; } public String getTransmission() { return transmission; } public String getType() { return bodytype; } public int getSeat() { return seat; } public int getYear() { return year; } //method public String ToString() { return ("This is Car detail- CarName:" + this.getName() + "\n Color :" + this.getColor() + "\n Transmission: " + this.getTransmission() + "\n Body type: " + this.getType() + "\n Seat : " + this.getSeat() + "\n Year: " + this.getYear())+"\n ================="; } //main method public static void Main(string[] args) { // 5 object Car Toyota = new Car("Toyota Rush", "Silver", "Auto", "SUV", 7, 2020); Car Bmw = new Car("BMX X1", "Silver", "Auto", "SUV", 7, 2022); Car Honda = new Car("Accord", "Black", "Auto", "Sedan", 4, 2016); Car Tesla = new Car("Tesla S", "Red", "Auto", "Sedan", 4, 2017); Car Mazda = new Car("Mazda 929 Legato", "White", "Manual", "Sedan", 4, 1980); //output Console.WriteLine(Toyota.ToString()); Console.WriteLine(Bmw.ToString()); Console.WriteLine(Honda.ToString()); Console.WriteLine(Tesla.ToString()); Console.WriteLine(Mazda.ToString()); Console.WriteLine("==============\n Thank you !"); //out put date and time DateTime now = DateTime.Now; Console.WriteLine("Print date: " + now); Console.ReadLine(); } }

October 20, 2022 0comments 37hotness 0likes Read all

IDEA User input data Convert to index Using index number fund element vaule Output element vaule Screenshot Code using System; namespace array2d { public class array2d { public static void Main(string[] args) { //initilizing arrays string[,] platenumber = new string[5,3] { {"ZJI163","USA1008","PHA101"}, {"PJ130108", "USA1006","JAP118" }, {"MAX168", "USA1002" ,"TWD120"}, { "AZZ9756", "USA1005","KOR119" }, {"NAS1223","USA109","DDT886"} }; //wait for user input,convert to int Console.WriteLine("Welcome use DK parking system!\n Solt: 0-4 \n floor: 0-2"); Console.WriteLine("Plz type slot: "); int solt = Convert.ToInt32(Console.ReadLine()); Console.WriteLine("Plz type floor: "); int floor = Convert.ToInt32(Console.ReadLine()); // decision the length of the element if (solt < 5 && floor < 3) { string car = platenumber[solt, floor]; Console.WriteLine("Found platenumber is :" + car); } else { Console.WriteLine("\nThe value you entered does not exist"); } Console.WriteLine("Thank you !"); Console.ReadLine(); } } }

October 16, 2022 0comments 34hotness 0likes Read all

C# Multidimensional Arrays As discussed in the previous chapter, Arrays in C# will support multi-dimensional arrays. In c#, a multidimensional array is an array that contains more than one dimension to represent the elements in a tabular format like rows and columns.In c#, multidimensional arrays can support either two or three-dimensional series. To create multi-dimensional arrays, we need to use a comma (,) separator inside the square brackets. C# Multi-Dimensional Array Declaration In c#, Multidimensional Arrays can be declared by specifying the data type of elements followed by the square brackets [] with comma (,) separator. The following are examples of creating two or three-dimensional arrays in the c# programming language. Question: Create a complete C# program that will compute the average of all elements in array x int [,] x = new int[4, 5] { { 4, 5, 6, 2, 12 }, { 10, 25, 33, 22, 11 },{ 211, 32, 43, 54, 65 }, { 3, 2, 1, 5, 6 } }; Average Solution Use for loop get array x elements values Add values Divide results by no. of values Code using System; namespace Module7 { public class Module7 { public static void Main(string[] args) { //initilizing array int[,] x = new int[4, 5] { { 4, 5, 6, 2, 12 }, { 10, 25, 33, 22, 11 }, { 211, 32, 43, 54, 65 }, { 3, 2, 1, 5, 6 } }; Console.WriteLine("---Two dimensional array elements---"); // use for loop get array x elements for(int y=0; y<4; y++) { int sum = 0; double avg =…

October 4, 2022 0comments 35hotness 0likes Read all

Question: Create a complete C# program that will simulate a log-in process. If the username and password are both correct the program will display “Log-in Successful”, otherwise it will display “Invalid Log-in details” FlowChart: C# Logical Operators: Code Answer: using System; namespace Module6 { class module6 { static void Main(string[] args) { string emailid, password; //use readline get user input Console.WriteLine("Plz enter u Emaill address :"); emailid = Console.ReadLine(); Console.WriteLine("Plz enter u Password"); password = Console.ReadLine(); //use if else to decision input data contains value if (emailid.Contains("[email protected]") && (password.Contains("d123456"))) { Console.WriteLine("Your Log-in Was Successful!"); } else { Console.WriteLine("Invalid Log-in details"); } Console.ReadLine(); } } } Reference C# Logical Operators with Exampleshttps://www.tutlane.com/tutorial/csharp/csharp-logical-operators-with-examples C# String Contains()https://www.javatpoint.com/csharp-string-contains

October 3, 2022 0comments 44hotness 0likes Read all

此博文记录了如何在网页中简单提取视频源地址的方法，起因是STS 课程中有一个Assessment是要观看影片去回答问题。Youtube没有资源，网页操作不方便，我想把他放到VLC中播放。软件环境 Chrome浏览器 VLC打开网络链接（视频源地址 M3U8） Windows 10 操作步骤使用Chrome浏览器在视频播放页面按F12进入开发模式(如上图所示)。在控制台找到Network 在搜索框输入M3U8 复制Request URL中的值在VLC中打开即可 Reference： How do we download a blob url video [closed] https://stackoverflow.com/questions/42901942/how-do-we-download-a-blob-url-video 如何下载 blob 地址的视频资源 https://www.cnblogs.com/mq0036/p/14953209.html

September 30, 2022 1comments 47hotness 0likes Read all

Create an new windwos forms project. Design Size. Add panel. design panel color,size,style. Add button. calculartor button and oper button. Coding button function. Declaring variables double fstNum,secNum; string oper; Identify button function btnCE private void btnCE_Click(object sender, EventArgs e) { textDisplay.Text = "0"; string f, s; f = Convert.ToString(fstNum); s = Convert.ToString(secNum); f = ""; s = ""; } backspace private void backspace_Click(object sender, EventArgs e) { if (textDisplay.Text.Length > 0) { textDisplay.Text = textDisplay.Text.Remove(textDisplay.Text.Length - 1, 1); } if (textDisplay.Text == "") { textDisplay.Text = "0"; } } btn9 private void btn9_Click(object sender, EventArgs e) { if (textDisplay.Text == "0") { textDisplay.Text = "9"; } else { textDisplay.Text = textDisplay.Text + "9"; } } btnAdd private void btnAdd_Click(object sender, EventArgs e) { fstNum = double.Parse(textDisplay.Text); oper = "+"; textDisplay.Text = ""; } btnPM private void btnPM_Click(object sender, EventArgs e) { double q = Convert.ToDouble(textDisplay.Text); textDisplay.Text = Convert.ToString(-1 * q); } btnC private void btnC_Click(object sender, EventArgs e) { textDisplay.Text = "0"; } benDec private void benDec_Click(object sender, EventArgs e) { if (benDec.Text == ".") { if (!textDisplay.Text.Contains(".")) { textDisplay.Text = textDisplay.Text + benDec.Text; } } } use switch statement out put equal private void btnEuq_Click(object sender, EventArgs e) { secNum = double.Parse(textDisplay.Text); switch (oper) { case "+": textDisplay.Text = (fstNum + secNum).ToString(); break; case "-": textDisplay.Text = (fstNum - secNum).ToString(); break; case "*": textDisplay.Text = (fstNum * secNum).ToString(); break; case "/": textDisplay.Text = (fstNum / secNum).ToString(); break; default: break; } } Code download：caluclator.zip Reference：

September 25, 2022 0comments 36hotness 0likes Read all

Example explainedLine 1: using System means that we can use classes from the System namespace. Line 2: A blank line. C# ignores white space. However, multiple lines makes the code more readable. Line 3: namespace is used to organize your code, and it is a container for classes and other namespaces. Line 4: The curly braces {} marks the beginning and the end of a block of code. Line 5: class is a container for data and methods, which brings functionality to your program. Every line of code that runs in C# must be inside a class. In our example, we named the class Program. Don't worry if you don't understand how using System, namespace and class works. Just think of it as something that (almost) always appears in your program, and that you will learn more about them in a later chapter. Line 7: Another thing that always appear in a C# program, is the Main method. Any code inside its curly brackets {} will be executed. You don't have to understand the keywords before and after Main. You will get to know them bit by bit while reading this tutorial. Line 9: Console is a class of the System namespace, which has a WriteLine() method that is used to output/print text. In our example it will output "Hello World!". If you omit the using System line, you would have to write System.Console.WriteLine() to print/output text. Note: Every C# statement ends with a semicolon ;. Note: C# is case-sensitive: "MyClass" and "myclass" has different meaning. Note: Unlike Java, the…

September 24, 2022 0comments 35hotness 0likes Read all

云服务器配置 CPU 2核 - 内存 4GB - 系统盘 60GB Centos7.6 安装docker #/bin/bash sudo yum install -y yum-utils sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo sudo yum-config-manager --enable docker-ce-nightly sudo yum install docker-ce docker-ce-cli containerd.io systemctl start docker #启动容器 systemctl enable docker #开机自启 sudo curl -L "https://github.com/docker/compose/releases/download/1.29.2/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose sudo chmod +x /usr/local/bin/docker-compose sudo ln -s /usr/local/bin/docker-compose /usr/bin/docker-compose docker --version docker-compose --version 安装Jumpserver curl -sSL https://github.com/jumpserver/jumpserver/releases/download/v2.21.2/quick_start.sh | bash 等待安装完成之后即可访问HOST的地址进行登录管理配置资产

June 27, 2022 0comments 34hotness 0likes Read all

Intel UHD 630 Driver for Windows 7 CPU: Intel® Core™ i7-8700Video: Intel UHD 630OS: Windows 7 64-bit Driver Downloadhttps://www.biostar.com.tw/app/en/event/H310_windowstool/win7_8th_i3_i5_Driver_2.0.rar Thanks https://www.sevenforums.com/drivers/424720-intel-uhd-630-driver-windows-7-a.html https://www.intel.com/content/www/us/en/download/18799/28436/intel-graphics-driver-for-windows-15-45.html

June 18, 2022 0comments 38hotness 0likes Read all

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TCP端口连通性检测工具-tcping

C# Classes and Objects

C# Find the value of an element using the index

C# Multidimensional Arrays

C# String Contains Assessment

blob视频资源的简单提取

Make a calculartor in c sharp

C# Syntax

JumpServer 开源堡垒机安装记录

Intel UHD 630 Driver for Windows 7