PC to PC USB communication

Question

How can I communicate between two PC\'s via USB? I want a program to send numbers trough the USB port to another PC on which another program would show these numbers. I have

Answer 1

You need to have an USB data transfer cable (also called USB data link cable) which support API or SDK, then use the following code. Communication speed much faster than using WinSock(TCP/IP) over USB or serial port over USB. USB2.0 communication speed is 480Mbps, effective data communication speeds greater than 100Mbps, and can isolate viruses and network attacks.

void CU2uDlg::OnOK() 
{
BYTE        buf[65530];
LPU2URET    pU2uRet;
BOOL        bRet;
int         ret;
CString     msgstr;

ret = u2u_open();
if (ret == -1){
    AfxMessageBox("Open U2U device Success.");
}else{
    msgstr.Format("Open U2U device fail，return：%d", ret);
    AfxMessageBox(msgstr);
    return;
}

//send data
bRet = u2u_SendData(buf, 65530, ret);
if(!bRet)
{
    msgstr.Format("Send data error，return：%d", ret);
    AfxMessageBox(msgstr);
    return;
}

//receive data
while (1){
    bRet = u2u_RecvData(recvData, dataLen, ret);
    if( !bRet )
    {
        msgstr.Format("Receive data error，return：%d", ret);
        AfxMessageBox(msgstr);
        u2u_close();
        return;
    }else{
        break;
    }
}
u2u_close();


}

See: Reference1, Reference2