Lab_6/15var (IV semester) CN

//MainForm.cpp
#include "MainForm.h"
using namespace System;
using namespace System::Windows::Forms;
[STAThreadAttribute]
void Main(array<String^>^ args) {
    Application::EnableVisualStyles();
    Application::SetCompatibleTextRenderingDefault(false);
    WinForms_CN::MainForm form;
    Application::Run(%form);
}
//MainForm.h
#pragma once
#include <windows.h>
#include <iphlpapi.h>
#include <icmpapi.h>
#include <string>


#pragma comment(lib, "ws2_32.lib")
#pragma comment(lib, "IPHLPAPI.lib")

namespace WinForms_CN {

    using namespace System;
    using namespace System::ComponentModel;
    using namespace System::Collections;
    using namespace System::Windows::Forms;
    using namespace System::Data;
    using namespace System::Drawing;
    using namespace System::Runtime::InteropServices;
    public ref class MainForm : public System::Windows::Forms::Form
    {
    public:
        MainForm(void)
        {
            InitializeComponent();
        }

    protected:
        ~MainForm()
        {
            if (components)
            {
                delete components;
            }
        }
    private: System::Windows::Forms::Button^  button1;
    private: System::Windows::Forms::TextBox^  textBox1;
    private: System::Windows::Forms::Button^  button2;
    private: System::Windows::Forms::TextBox^  textBox2;
    private: System::Windows::Forms::TextBox^  textBox3;
    private: System::Windows::Forms::TextBox^  textBox4;
    private: System::Windows::Forms::Label^  label1;
    private: System::Windows::Forms::Label^  label2;
    private: System::Windows::Forms::Label^  label3;


    protected:

    private:
        System::ComponentModel::Container ^components;

#pragma region Windows Form Designer generated code
        void InitializeComponent(void)
        {
            this->button1 = (gcnew System::Windows::Forms::Button());
            this->textBox1 = (gcnew System::Windows::Forms::TextBox());
            this->button2 = (gcnew System::Windows::Forms::Button());
            this->textBox2 = (gcnew System::Windows::Forms::TextBox());
            this->textBox3 = (gcnew System::Windows::Forms::TextBox());
            this->textBox4 = (gcnew System::Windows::Forms::TextBox());
            this->label1 = (gcnew System::Windows::Forms::Label());
            this->label2 = (gcnew System::Windows::Forms::Label());
            this->label3 = (gcnew System::Windows::Forms::Label());
            this->SuspendLayout();
            //
            // button1
            //
            this->button1->Location = System::Drawing::Point(342, 25);
            this->button1->Name = L"button1";
            this->button1->Size = System::Drawing::Size(70, 23);
            this->button1->TabIndex = 0;
            this->button1->Text = L"Ping";
            this->button1->UseVisualStyleBackColor = true;
            this->button1->Click += gcnew System::EventHandler(this, &MainForm::button1_Click);
            //
            // textBox1
            //
            this->textBox1->Anchor = static_cast<System::Windows::Forms::AnchorStyles>((((System::Windows::Forms::AnchorStyles::Top | System::Windows::Forms::AnchorStyles::Bottom)
                | System::Windows::Forms::AnchorStyles::Left)
                | System::Windows::Forms::AnchorStyles::Right));
            this->textBox1->Font = (gcnew System::Drawing::Font(L"Courier New", 8.25F, System::Drawing::FontStyle::Regular, System::Drawing::GraphicsUnit::Point,
                static_cast<System::Byte>(204)));
            this->textBox1->Location = System::Drawing::Point(12, 97);
            this->textBox1->Multiline = true;
            this->textBox1->Name = L"textBox1";
            this->textBox1->ScrollBars = System::Windows::Forms::ScrollBars::Vertical;
            this->textBox1->Size = System::Drawing::Size(400, 349);
            this->textBox1->TabIndex = 1;
            //
            // button2
            //
            this->button2->Location = System::Drawing::Point(342, 68);
            this->button2->Name = L"button2";
            this->button2->Size = System::Drawing::Size(70, 23);
            this->button2->TabIndex = 2;
            this->button2->Text = L"Close";
            this->button2->UseVisualStyleBackColor = true;
            this->button2->Click += gcnew System::EventHandler(this, &MainForm::button2_Click);
            //
            // textBox2
            //
            this->textBox2->Location = System::Drawing::Point(12, 28);
            this->textBox2->Name = L"textBox2";
            this->textBox2->Size = System::Drawing::Size(271, 20);
            this->textBox2->TabIndex = 3;
            this->textBox2->Text = L"4pda.ru";
            //
            // textBox3
            //
            this->textBox3->Location = System::Drawing::Point(15, 71);
            this->textBox3->Name = L"textBox3";
            this->textBox3->Size = System::Drawing::Size(106, 20);
            this->textBox3->TabIndex = 4;
            this->textBox3->Text = L"50";
            //
            // textBox4
            //
            this->textBox4->Location = System::Drawing::Point(177, 71);
            this->textBox4->Name = L"textBox4";
            this->textBox4->Size = System::Drawing::Size(106, 20);
            this->textBox4->TabIndex = 5;
            this->textBox4->Text = L"8192";
            //
            // label1
            //
            this->label1->AutoSize = true;
            this->label1->Location = System::Drawing::Point(12, 12);
            this->label1->Name = L"label1";
            this->label1->Size = System::Drawing::Size(96, 13);
            this->label1->TabIndex = 6;
            this->label1->Text = L"Remote host name";
            //
            // label2
            //
            this->label2->AutoSize = true;
            this->label2->Location = System::Drawing::Point(12, 55);
            this->label2->Name = L"label2";
            this->label2->Size = System::Drawing::Size(106, 13);
            this->label2->TabIndex = 7;
            this->label2->Text = L"Number of packages";
            //
            // label3
            //
            this->label3->AutoSize = true;
            this->label3->Location = System::Drawing::Point(176, 55);
            this->label3->Name = L"label3";
            this->label3->Size = System::Drawing::Size(71, 13);
            this->label3->TabIndex = 8;
            this->label3->Text = L"Package size";
            //
            // MainForm
            //
            this->AutoScaleDimensions = System::Drawing::SizeF(6, 13);
            this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font;
            this->ClientSize = System::Drawing::Size(424, 461);
            this->Controls->Add(this->label3);
            this->Controls->Add(this->label2);
            this->Controls->Add(this->label1);
            this->Controls->Add(this->textBox4);
            this->Controls->Add(this->textBox3);
            this->Controls->Add(this->textBox2);
            this->Controls->Add(this->button2);
            this->Controls->Add(this->textBox1);
            this->Controls->Add(this->button1);
            this->Name = L"MainForm";
            this->Text = L"Lab_6 CN";
            this->ResumeLayout(false);
            this->PerformLayout();

        }
#pragma endregion


    private: System::Void button1_Click(System::Object^  sender, System::EventArgs^  e) {
        int numberOfPackages = int::Parse(textBox3->Text);
        int packageSize = int::Parse(textBox4->Text);

        int totalSum = 0;

        WSADATA wsaData;
        int iResult;
        struct hostent *remoteHost;
        char *host_name;
        struct in_addr addr;
        iResult = WSAStartup(MAKEWORD(2, 2), &wsaData);
        String ^name = Convert::ToString(textBox2->Text);
        IntPtr ptrToNativeString = Marshal::StringToHGlobalAnsi(name);
        host_name = static_cast<char*>(ptrToNativeString.ToPointer());
        remoteHost = gethostbyname(host_name);
        textBox1->Text += "HOSTNAME: " + gcnew String(host_name) + "\r\n";

        addr.s_addr = *(u_long *)remoteHost->h_addr_list[0];
        std::string ip_add = inet_ntoa(addr);
        textBox1->Text += "IP: " + gcnew String(inet_ntoa(addr)) + "\r\n";

        for (int i = 0; i < numberOfPackages; i++) {
            HANDLE hIcmpFile = IcmpCreateFile();
            if (hIcmpFile != INVALID_HANDLE_VALUE)
            {
                DWORD ReplySize = sizeof(ICMP_ECHO_REPLY) + packageSize;
                char *ReplyBuffer = new char[ReplySize];
                const int addr = inet_addr(ip_add.c_str());
                if (addr != INADDR_NONE) {
                    if (IcmpSendEcho(hIcmpFile, addr, new char[packageSize], packageSize, 0, ReplyBuffer, ReplySize, 1000) != 0) {
                        PICMP_ECHO_REPLY icmpReply = (PICMP_ECHO_REPLY)ReplyBuffer;
                        totalSum += icmpReply->RoundTripTime;
                    }
                }
                delete[]ReplyBuffer;
                IcmpCloseHandle(hIcmpFile);
            }
        }
        textBox1->Text += "Send packages: " + numberOfPackages + "\r\n";
        textBox1->Text += "Package size: " + packageSize + "\r\n";
        textBox1->Text += "Average ping: " + (double)totalSum / numberOfPackages + "\r\n";
        textBox1->Text += "*****************************************************\r\n\r\n";
    }

private: System::Void button2_Click(System::Object^  sender, System::EventArgs^  e) {
    Application::Exit();
}
};
}