socket

Winsock Programmer's FAQ:
http://tangentsoft.net/wskfaq/

Måske kan du bruge noget af dette?

http://cs.ecs.baylor.edu/~donahoo/practical/CSockets/c++.html
http://www.programatica.com/cgi4.html

Generelt:
http://www.lowtek.com/sockets/

Jeg har kigget på elle links, i nu 3 timer..Jeg fatter minus af det hele...Kender i ikke en link hvor der står meget præcist skrevet hvordan man gør, og hvilkde værktæjer man skal bruge. Og hvor koden skal stå, i H filen eller i Cpp filen..Det kan jeg heller ikke se...

Det lyder sikkert dumt, men jeg er bare ny inden for ordet "socket".

Mvh
vb2

Jeg fandt følgende eksempel på http://www.sockaddr.com/ :

//
// Client.cpp
//
// Extremely simple, stream client example.
// Works in conjunction with Server.cpp.
//
// The program attempts to connect to the server and port
// specified on the command line. The Server program prints
// the needed information when it is started. Once connected,
// the program sends data to the server, waits for a response
// and then exits.
//
// Compile and link with wsock32.lib
//
// Pass the server name and port number on the command line.
//
// Example: Client MyMachineName 2000
//
#include <stdio.h>
#include <winsock.h>

// Function prototype
void StreamClient(char *szServer, short nPort);

// Helper macro for displaying errors
#define PRINTERROR(s)    \
        fprintf(stderr,"\n%: %d\n", s, WSAGetLastError())

////////////////////////////////////////////////////////////

void main(int argc, char **argv)
{
    WORD wVersionRequested = MAKEWORD(1,1);
    WSADATA wsaData;
    int nRet;
    short nPort;

    //
    // Check for the host and port arguments
    //
    if (argc != 3)
    {
        fprintf(stderr,"\nSyntax: client ServerName PortNumber\n");
        return;
    }

    nPort = atoi(argv[2]);


    //
    // Initialize WinSock and check the version
    //
    nRet = WSAStartup(wVersionRequested, &wsaData);
    if (wsaData.wVersion != wVersionRequested)
    {   
        fprintf(stderr,"\n Wrong version\n");
        return;
    }


    //
    // Go do the stuff a stream client does
    //
    StreamClient(argv[1], nPort);

   
    //
    // Release WinSock
    //
    WSACleanup();
}

////////////////////////////////////////////////////////////

void StreamClient(char *szServer, short nPort)
{
    printf("\nStream Client connecting to server: %s on port: %d",
                szServer, nPort);

    //
    // Find the server
    //
    LPHOSTENT lpHostEntry;

    lpHostEntry = gethostbyname(szServer);
    if (lpHostEntry == NULL)
    {
        PRINTERROR("gethostbyname()");
        return;
    }

    //
    // Create a TCP/IP stream socket
    //
    SOCKET    theSocket;

    theSocket = socket(AF_INET,                // Address family
                      SOCK_STREAM,            // Socket type
                      IPPROTO_TCP);        // Protocol
    if (theSocket == INVALID_SOCKET)
    {
        PRINTERROR("socket()");
        return;
    }

    //
    // Fill in the address structure
    //
    SOCKADDR_IN saServer;

    saServer.sin_family = AF_INET;
    saServer.sin_addr = *((LPIN_ADDR)*lpHostEntry->h_addr_list);
                                        // ^ Server's address
    saServer.sin_port = htons(nPort);    // Port number from command line

    //
    // connect to the server
    //
    int nRet;

    nRet = connect(theSocket,                // Socket
                  (LPSOCKADDR)&saServer,    // Server address
                  sizeof(struct sockaddr));// Length of server address structure
    if (nRet == SOCKET_ERROR)
    {
        PRINTERROR("socket()");
        closesocket(theSocket);
        return;
    }


    //
    // Send data to the server
    //
    char szBuf[256];

    strcpy(szBuf, "From the Client");
    nRet = send(theSocket,                // Connected socket
                szBuf,                    // Data buffer
                strlen(szBuf),            // Length of data
                0);                        // Flags
    if (nRet == SOCKET_ERROR)
    {
        PRINTERROR("send()");
        closesocket(theSocket);
        return;
    }


    //
    // Wait for a reply
    //
    nRet = recv(theSocket,                // Connected socket
                szBuf,                    // Receive buffer
                sizeof(szBuf),            // Size of receive buffer
                0);                        // Flags
    if (nRet == SOCKET_ERROR)
    {
        PRINTERROR("recv()");
        closesocket(theSocket);
        return;
    }


    //
    // Display the received data
    //
    printf("\nData received: %s", szBuf);


    closesocket(theSocket);
    return;
}

//
// Client.cpp
//
// Extremely simple, stream client example.
// Works in conjunction with Server.cpp.
//
// The program attempts to connect to the server and port
// specified on the command line. The Server program prints
// the needed information when it is started. Once connected,
// the program sends data to the server, waits for a response
// and then exits.
//
// Compile and link with wsock32.lib
//
// Pass the server name and port number on the command line.
//
// Example: Client MyMachineName 2000
//
#include <stdio.h>
#include <winsock.h>

// Function prototype
void StreamClient(char *szServer, short nPort);

// Helper macro for displaying errors
#define PRINTERROR(s)    \
        fprintf(stderr,"\n%: %d\n", s, WSAGetLastError())

////////////////////////////////////////////////////////////

void main(int argc, char **argv)
{
    WORD wVersionRequested = MAKEWORD(1,1);
    WSADATA wsaData;
    int nRet;
    short nPort;

    //
    // Check for the host and port arguments
    //
    if (argc != 3)
    {
        fprintf(stderr,"\nSyntax: client ServerName PortNumber\n");
        return;
    }

    nPort = atoi(argv[2]);


    //
    // Initialize WinSock and check the version
    //
    nRet = WSAStartup(wVersionRequested, &wsaData);
    if (wsaData.wVersion != wVersionRequested)
    {   
        fprintf(stderr,"\n Wrong version\n");
        return;
    }


    //
    // Go do the stuff a stream client does
    //
    StreamClient(argv[1], nPort);

   
    //
    // Release WinSock
    //
    WSACleanup();
}

////////////////////////////////////////////////////////////

void StreamClient(char *szServer, short nPort)
{
    printf("\nStream Client connecting to server: %s on port: %d",
                szServer, nPort);

    //
    // Find the server
    //
    LPHOSTENT lpHostEntry;

    lpHostEntry = gethostbyname(szServer);
    if (lpHostEntry == NULL)
    {
        PRINTERROR("gethostbyname()");
        return;
    }

    //
    // Create a TCP/IP stream socket
    //
    SOCKET    theSocket;

    theSocket = socket(AF_INET,                // Address family
                      SOCK_STREAM,            // Socket type
                      IPPROTO_TCP);        // Protocol
    if (theSocket == INVALID_SOCKET)
    {
        PRINTERROR("socket()");
        return;
    }

    //
    // Fill in the address structure
    //
    SOCKADDR_IN saServer;

    saServer.sin_family = AF_INET;
    saServer.sin_addr = *((LPIN_ADDR)*lpHostEntry->h_addr_list);
                                        // ^ Server's address
    saServer.sin_port = htons(nPort);    // Port number from command line

    //
    // connect to the server
    //
    int nRet;

    nRet = connect(theSocket,                // Socket
                  (LPSOCKADDR)&saServer,    // Server address
                  sizeof(struct sockaddr));// Length of server address structure
    if (nRet == SOCKET_ERROR)
    {
        PRINTERROR("socket()");
        closesocket(theSocket);
        return;
    }


    //
    // Send data to the server
    //
    char szBuf[256];

    strcpy(szBuf, "From the Client");
    nRet = send(theSocket,                // Connected socket
                szBuf,                    // Data buffer
                strlen(szBuf),            // Length of data
                0);                        // Flags
    if (nRet == SOCKET_ERROR)
    {
        PRINTERROR("send()");
        closesocket(theSocket);
        return;
    }


    //
    // Wait for a reply
    //
    nRet = recv(theSocket,                // Connected socket
                szBuf,                    // Receive buffer
                sizeof(szBuf),            // Size of receive buffer
                0);                        // Flags
    if (nRet == SOCKET_ERROR)
    {
        PRINTERROR("recv()");
        closesocket(theSocket);
        return;
    }


    //
    // Display the received data
    //
    printf("\nData received: %s", szBuf);


    closesocket(theSocket);
    return;
}

Jeg har kompileret begge programmer., og de virker helt fint.

vb2 >> Soreno's link var måske godt nok når alt kom til alt ?

Soepro>>

Nej det var hans kode :)

muligvis der er opstået en misforståelse ??
jeg husker ikke at have postet noget kode ?

soreno != soepro