I have created a socket using the following lines of code. Now i change the value of the socket i get like this

m_Socket++;

Even now the send recv socket functions succeeds without throwing SOCKET_ERROR. I expect that it must throw error.

Am i doing something wrong.

struct sockaddr_in ServerSock; // Socket address structure to bind the Port Number to listen to

char *localIP ;

SOCKET SocServer;

//To Set up the sockaddr structure
ServerSock.sin_family = AF_INET;
ServerSock.sin_addr.s_addr = INADDR_ANY;

ServerSock.sin_port = htons(pLantronics->m_wRIPortNo);

// To Create a socket for listening on wPortNumber
if(( SocServer = socket( AF_INET, SOCK_STREAM, 0 )) == INVALID_SOCKET )
{
    return FALSE;
}

//To bind the socket with wPortNumber
if(bind(SocServer,(sockaddr*)&ServerSock,sizeof(ServerSock))!=0)
{
    return FALSE;
}

// To Listen for the connection on wPortNumber
if(listen(SocServer,SOMAXCONN)!=0)
{
    return FALSE;
}

// Structure to get the IP Address of the connecting Entity
sockaddr_in insock;

int insocklen=sizeof(insock);

//To accept the Incoming connection on the wPortNumber
pLantronics->m_Socket=accept(SocServer,(struct sockaddr*)&insock,&insocklen);   

if(pLantronics->m_Socket == INVALID_SOCKET)
{
    shutdown(SocServer, 2 );
    closesocket(SocServer );
    return FALSE;
}

// To make socket non-blocking
DWORD dwNonBlocking = 1;
if(ioctlsocket( pLantronics->m_Socket, FIONBIO, &dwNonBlocking ))
{
    shutdown(pLantronics->m_Socket, 2);
    closesocket(pLantronics->m_Socket);
    return FALSE;
}


pLantronics->m_sModemName = inet_ntoa(insock.sin_addr);

Now i do

m_Socket++;//change to some other number ideally expecting send recv to fail.

Even now the send recv socket functions succeeds without throwing SOCKET_ERROR. I expect that it must throw error.

Am i doing something wrong.