helderantunes / rcom Goto Github PK

if (destuffedFrame[destuffedSize-2] != BCC2) {
    printf("ERROR in llread(): BCC2 error\n");

    unsigned int  seq = destuffedFrame[2] >> 6;
    if (seq == linkLayer.sequenceNumber) { // nova trama

        //Send Reject
        if(seq == 0){
            unsigned char C_REJ0 = (0 << 7) | C_REJ;
            sendFrame(fd, A_SENDER, C_REJ0);
        }
        else if(seq == 1){
            unsigned char C_REJ1 = (1 << 7) | C_REJ;
            sendFrame(fd, A_SENDER, C_REJ1);
        }
    }
    else { // trama duplicada
        if(seq == 0){
            int C_RR1 = (1 << 7) | C_RR;
            sendFrame(fd, A_SENDER, C_RR1);
        }
        else if(seq == 1){
            int C_RR0 = (0 << 7) | C_RR;
            sendFrame(fd, A_SENDER, C_RR0);
        }
    }
}