Wi-Fi direct, data transfer between Android and another device (not Android)

Hi everyone, I study electronic and for my project I have to develop an Android-application.

I will explain my project briefly:
Devices:

• MSP430FF5529 (debug interface)


• CC3100BOOSTERPACK (enable Wi-Fi connection)


• HTC one M9

As the title suggest, I have to create a connection between the android device and the MSP430/CC3100.

The program of the MSP430 is an SDK-example of Texas Instrument and it should work, using the Wi-Fi direct on my phone, I see the device and I connect to it.

My problem is that need to exchange files between those devices. However, to do it I need some knowledge of Wi-Fi direct. I want to connect to the CC3100 as client and not as group owner, I know the device IP and the port I should connect to. After the connection is established, the program of the device enter on this function: the input is the number of port.

Code:

---

/*!
    \brief Opening a server side socket and receiving data

    This function opens a TCP socket in Listen mode and waits for an incoming
    TCP connection. If a socket connection is established then the function
    will try to read 1000 TCP packets from the connected client.

    \param[in]      port number on which the server will be listening on

    \return        0 on success, -1 on Error.

    \note          This function will wait for an incoming connection till one
                    is established

    \warning
*/
static _i32 BsdTcpServer(_u16 Port)
{
    SlSockAddrIn_t  Addr;
    SlSockAddrIn_t  LocalAddr;

    _u16          idx = 0;
    _u16          AddrSize = 0;
    _i16          SockID = 0;
    _i32          Status = 0;
    _i16          newSockID = 0;
    _u16          LoopCount = 0;
    _u16          recvSize = 0;

    for (idx=0 ; idx<BUF_SIZE ; idx++)
    {
        uBuf.BsdBuf[idx] = (_u8)(idx % 10);
    }

    LocalAddr.sin_family = SL_AF_INET;
    LocalAddr.sin_port = sl_Htons((_u16)Port);
    LocalAddr.sin_addr.s_addr = 0;

    SockID = sl_Socket(SL_AF_INET,SL_SOCK_STREAM, 0);
    if( SockID < 0 )
    {
        CLI_Write(" [TCP Server] Create socket Error \n\r");
        ASSERT_ON_ERROR(SockID);
    }

    AddrSize = sizeof(SlSockAddrIn_t);
    Status = sl_Bind(SockID, (SlSockAddr_t *)&LocalAddr, AddrSize);
    if( Status < 0 )
    {
        sl_Close(SockID);
        CLI_Write(" [TCP Server] Socket address assignment Error \n\r");
        ASSERT_ON_ERROR(Status);
    }

    Status = sl_Listen(SockID, 0);
    if( Status < 0 )
    {
        sl_Close(SockID);
        CLI_Write(" [TCP Server] Listen Error \n\r");
        ASSERT_ON_ERROR(Status);
    }

  newSockID = sl_Accept(SockID, ( struct SlSockAddr_t *)&Addr,
                              (SlSocklen_t*)&AddrSize);
  if( newSockID < 0 )
    {
        sl_Close(SockID);
        CLI_Write(" [TCP Server] Accept connection Error \n\r");
        ASSERT_ON_ERROR(newSockID);
    }

    while (LoopCount < NO_OF_PACKETS)
    {
        recvSize = BUF_SIZE;

        do
        {
            Status = sl_Recv(newSockID, &uBuf.BsdBuf[BUF_SIZE - recvSize], recvSize, 0);
            if( Status <= 0 )
            {
                sl_Close(newSockID);
                sl_Close(SockID);
                CLI_Write(" [TCP Server] Data recv Error \n\r");
                ASSERT_ON_ERROR(TCP_RECV_ERROR);
            }

            recvSize -= Status;

        }while(recvSize > 0);

        LoopCount++;
    }

    Status = sl_Close(newSockID);
    ASSERT_ON_ERROR(Status);

    Status = sl_Close(SockID);
    ASSERT_ON_ERROR(Status);
    CLI_Write(" return function \n\r");
    return SUCCESS;
}

---

I went through p2p guide of "Developer Android" but it is hard without any experience on it.
Can you please help me understand? A button that send a byte would be enough, without any interfaces. Then I should be able to do it on my way.
I downloaded some guides but no one helps on this subject, and of course I searched on this forum an answer but I did not find it.

Thank you for your help

Luca