Código Escaner de puertos en C++

[Drewermerc]

bueno mira primero ve a:
settings despues compiler luego en la pestaña linker settings despues en donde dice other linker opcions agrgas esto -lws2_32.

aqui estan los codigo que te deci vangod.

Código C++:

// Netzwerkprogrammierung, WINSOCK API, Sockets
// TCP Server
 
#pragma comment(lib, "ws2_32.lib")
#include <cstdio>
#include <iostream>
#include <WinSock2.h>
#include <Windows.h>
using namespace std;
 
char recvbuf[256];
 
int main()
{
    // Hilfsvariable
    long res;
 
    // Versionsdaten
    WSADATA wsaData;
 
    // ws2_32.dll aktivieren
    res = WSAStartup(MAKEWORD(2, 1), &wsaData);
    if(res == 0 )
        cout << "WSAStartup()\t\t successful" << endl;
    else
        cout << "error WSAStartup(): " << WSAGetLastError() << endl;
 
    // Socket Deskriptoren
    SOCKET slisten, client;
 
    // Socket anforder bzw. Kommunikationsendpunkt einrichten
    slisten = socket(AF_INET, SOCK_STREAM, 0);
    if(slisten != INVALID_SOCKET )
        cout << "socket()  \t\t successful" << endl;
    else
        cout << "error socket(): " << WSAGetLastError() << endl;
 
    // Verbindungsinformationen
    sockaddr_in info;       // sockaddr
    info.sin_addr.s_addr = inet_addr("127.0.0.1");
    info.sin_family      = AF_INET;
    info.sin_port        = htons(54345);
    int infolen = sizeof(info);
 
    res = bind(slisten, (struct sockaddr*)&info, infolen);
    if(res != SOCKET_ERROR )
        cout << "bind()  \t\t successful" << endl;
    else
        cout << "error bind(): " << WSAGetLastError() << endl;
 
    // Warteschlange für einkommende Verbindungen
    res = listen(slisten, SOMAXCONN);
    if(res != SOCKET_ERROR )
        cout << "listen()  \t\t successful" << endl;
    else
        cout << "error listen(): " << WSAGetLastError() << endl;
 
    sockaddr_in clientinfo;
    int clientinfolen = sizeof(clientinfo);
 
    while(1)
    {
        // Verbindung aus der Warteschlange abholen
        client = accept(slisten, (struct sockaddr*)&clientinfo, &clientinfolen);
        if(client != SOCKET_ERROR)
            cout << "client accepted: " << inet_ntoa(clientinfo.sin_addr) << ":"
                 << ntohs(clientinfo.sin_port) << endl;
 
        // über das Socket kommunizieren
        res = send(client, "server message received", strlen("server message received"), 0);
        if(res == SOCKET_ERROR)
            cout << "error send()" << WSAGetLastError() << endl;
 
        res = recv(client, recvbuf, 256, 0);
        if(res == SOCKET_ERROR)
            cout << "error recv(): " << WSAGetLastError() << endl;
        else
            cout << res << " bytes received: " 
                 << recvbuf << endl;
    }
 
    closesocket(client);
    closesocket(slisten);
    WSACleanup();
    return 0;
}
 

Código C++:

// TCP Client
 
#pragma comment(lib, "ws2_32.lib")
#include <cstdio>
#include <iostream>
#include <WinSock2.h>
#include <Windows.h>
using namespace std;
 
char sendbuf[256];
char recvbuf[256];
 
int main()
{
    long rc;
 
    WSADATA wsaData;
    SOCKET sConnect;
    sockaddr_in conpar;
 
    // ws2_32.dll aktivieren
    rc = WSAStartup(MAKEWORD(2, 0), &wsaData);
    if(rc == 0 )
        cout << "WSAStartup()\t\t successful" << endl;
    else
        cout << "error WSAStartup(): " << WSAGetLastError() << endl;
 
    // socket einrichten
    sConnect = socket(AF_INET, SOCK_STREAM, 0);
    if(sConnect != INVALID_SOCKET )
        cout << "socket()  \t\t successful" << endl;
    else
        cout << "error socket(): " << WSAGetLastError() << endl;
 
    // verbindungsparameter
    conpar.sin_addr.s_addr = inet_addr("127.0.0.1");
    conpar.sin_family      = AF_INET;
    conpar.sin_port        = htons(54345);
    int conparlen = sizeof(conpar);
 
    // server vor client starten, oder hier eine connect-schleife erstellen 
    rc = connect(sConnect, (struct sockaddr*)&conpar, conparlen);
    if(rc != SOCKET_ERROR)
        cout << "connect()   \t\t successful" << endl;
    else
        cout << "not connected(): " << WSAGetLastError() << endl;
 
    while(1)
    {
        memset(&sendbuf, 0, sizeof(sendbuf));
        memset(&recvbuf, 0, sizeof(recvbuf));
 
        rc = recv(sConnect, recvbuf, 256, 0);
        if(rc == SOCKET_ERROR)
            cout << "error recv(): " << WSAGetLastError() << endl;
        else
        {
            cout << rc << " bytes received: "
                 << recvbuf << endl;
        }
 
        cout << "send: ";
        cin.getline(sendbuf, 256);
 
        rc = send(sConnect, sendbuf, strlen(sendbuf), 0);
        if(rc == SOCKET_ERROR)
            cout << "error send(): " << WSAGetLastError() << endl;
        else
            cout << rc << " bytes sent" << endl;
    }
 
    closesocket(sConnect);
    WSACleanup();
    return 0;
}