Winsock code working on one PC but not the other !!

[Fantasy]

Hello everyone

I'm experiencing a very weird problem, i have a laptop and a desktop and I'm trying to make a server and client in Winsock. when i compile and run the code on my laptop it works perfectly, the server sends data and the client receives it, but when i take this code and try to run it and compile it on my desktop the server sends the data but the client doesn't receive it !!!

I'm using window 7 64bit on both machines and VS 2010

any idea what is wrong ?!

Server:-

#ifndef UNICODE
#define UNICODE
#endif

#define WIN32_LEAN_AND_MEAN

#include <winsock2.h>
#include <Ws2tcpip.h>
#include <stdio.h>

// Link with ws2_32.lib
#pragma comment(lib, "Ws2_32.lib")

int main()
{

    int iResult;
    WSADATA wsaData;

    SOCKET SendSocket = INVALID_SOCKET;
    sockaddr_in RecvAddr;

    unsigned short Port = 27015;

    char SendBuf[1024];
    int BufLen = 1024;

    //----------------------
    // Initialize Winsock
    iResult = WSAStartup(MAKEWORD(2, 2), &wsaData);
    if (iResult != NO_ERROR) {
        wprintf(L"WSAStartup failed with error: %d\n", iResult);
        return 1;
    }

    //---------------------------------------------
    // Create a socket for sending data
    SendSocket = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
    if (SendSocket == INVALID_SOCKET) {
        wprintf(L"socket failed with error: %ld\n", WSAGetLastError());
        WSACleanup();
        return 1;
    }
    //---------------------------------------------
    // Set up the RecvAddr structure with the IP address of
    // the receiver (in this example case "192.168.1.1")
    // and the specified port number.
    RecvAddr.sin_family = AF_INET;
    RecvAddr.sin_port = htons(Port);
    RecvAddr.sin_addr.s_addr = inet_addr("127.0.0.1");

    //---------------------------------------------
    // Send a datagram to the receiver
    wprintf(L"Sending a datagram to the receiver...\n");
    iResult = sendto(SendSocket,
                     SendBuf, BufLen, 0, (SOCKADDR *) & RecvAddr, sizeof (RecvAddr));
    if (iResult == SOCKET_ERROR) {
        wprintf(L"sendto failed with error: %d\n", WSAGetLastError());
        closesocket(SendSocket);
        WSACleanup();
        return 1;
    }
    //---------------------------------------------
    // When the application is finished sending, close the socket.
    wprintf(L"Finished sending. Closing socket.\n");
    iResult = closesocket(SendSocket);
    if (iResult == SOCKET_ERROR) {
        wprintf(L"closesocket failed with error: %d\n", WSAGetLastError());
        WSACleanup();
        return 1;
    }
    //---------------------------------------------
    // Clean up and quit.
    wprintf(L"Exiting.\n");
    WSACleanup();
    return 0;
}

Client:-

#ifndef UNICODE
#define UNICODE
#endif

#define WIN32_LEAN_AND_MEAN

#include <winsock2.h>
#include <Ws2tcpip.h>
#include <stdio.h>

// Link with ws2_32.lib
#pragma comment(lib, "Ws2_32.lib")

int main()
{

    int iResult = 0;

    WSADATA wsaData;

    SOCKET RecvSocket;
    sockaddr_in RecvAddr;

    unsigned short Port = 27015;

    char RecvBuf[1024];
    int BufLen = 1024;

    sockaddr_in SenderAddr;
    int SenderAddrSize = sizeof (SenderAddr);

    //-----------------------------------------------
    // Initialize Winsock
    iResult = WSAStartup(MAKEWORD(2, 2), &wsaData);
    if (iResult != NO_ERROR) {
        wprintf(L"WSAStartup failed with error %d\n", iResult);
        return 1;
    }
    //-----------------------------------------------
    // Create a receiver socket to receive datagrams
    RecvSocket = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
    if (RecvSocket == INVALID_SOCKET) {
        wprintf(L"socket failed with error %d\n", WSAGetLastError());
        return 1;
    }
    //-----------------------------------------------
    // Bind the socket to any address and the specified port.
    RecvAddr.sin_family = AF_INET;
    RecvAddr.sin_port = htons(Port);
    RecvAddr.sin_addr.s_addr = htonl(INADDR_ANY);

    iResult = bind(RecvSocket, (SOCKADDR *) & RecvAddr, sizeof (RecvAddr));
    if (iResult != 0) {
        wprintf(L"bind failed with error %d\n", WSAGetLastError());
        return 1;
    }
    //-----------------------------------------------
    // Call the recvfrom function to receive datagrams
    // on the bound socket.
    wprintf(L"Receiving datagrams...\n");
    iResult = recvfrom(RecvSocket,
                       RecvBuf, BufLen, 0, (SOCKADDR *) & SenderAddr, &SenderAddrSize);
    if (iResult == SOCKET_ERROR) {
        wprintf(L"recvfrom failed with error %d\n", WSAGetLastError());
    }
 
    //-----------------------------------------------
    // Close the socket when finished receiving datagrams
    wprintf(L"Finished receiving. Closing socket.\n");
    iResult = closesocket(RecvSocket);
    if (iResult == SOCKET_ERROR) {
        wprintf(L"closesocket failed with error %d\n", WSAGetLastError());
        return 1;
    }

    //-----------------------------------------------
    // Clean up and exit.
    wprintf(L"Exiting.\n");
    WSACleanup();
    return 0;
}

[coder777]

Did you check the firewall?

[Fantasy]

Yes i did, both windows and my Anti-Virus firewall are disabled.

[Fantasy]

nvm my stupid anti-virus was blocking the connection even though i disabled the firewall.
i uninstalled my anti-virus and now its working.
stupid anti-virus -_-

[hanst99]

Uninstalled? Wouldn't have adding an exception been enough?