Need help, altering udpEcho function to modify buffer before echoing back

I am trying to alter the buffer using snprintf. I have a feeling I am meant to break this up into different sections of processing, as in, receive message, make modifications to buffer, send intial message + altered component. I believe this has something to do with seperating network tasks from sys/bios tasks? Do i need 3 separate tasks and then use semaphores to lock one task at a time?

Void echoFxn(UArg arg0, UArg arg1)
{
    int                bytesRcvd;
    int                bytesSent;
    int                status;
    int                server;
    fd_set             readSet;
    struct sockaddr_in localAddr;
    struct sockaddr_in clientAddr;
    socklen_t          addrlen;
    char               buffer[UDPPACKETSIZE];
    char               copybuffer[20]; 	// Added by terry
    int cx;								// Added by terry
    int count;							// Added by terry

    server = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
    if (server == -1) {
        System_printf("Error: socket not created.\n");
        goto shutdown;
    }

    memset(&localAddr, 0, sizeof(localAddr));
    localAddr.sin_family = AF_INET;
    localAddr.sin_addr.s_addr = htonl(INADDR_ANY);
    localAddr.sin_port = htons(arg0);

    status = bind(server, (struct sockaddr *)&localAddr, sizeof(localAddr));
    if (status == -1) {
        System_printf("Error: bind failed.\n");
        goto shutdown;
    }
    count = 1;
    do {
        /*
         *  readSet and addrlen are value-result arguments, which must be reset
         *  in between each select() and recvfrom() call
         */
        FD_ZERO(&readSet);
        FD_SET(server, &readSet);
        addrlen = sizeof(clientAddr);

        /* Wait forever for the reply */
        status = select(server + 1, &readSet, NULL, NULL, NULL);
        if (status > 0) {
            if (FD_ISSET(server, &readSet)) {
                bytesRcvd = recvfrom(server, buffer, UDPPACKETSIZE, 0,
                        (struct sockaddr *)&clientAddr, &addrlen);
                
				  cx = snprintf(copybuffer,20,"Message %u ", count);							// Added by terry
				  sendto(server, copybuffer, cx, 0, (struct sockaddr *)&clientAddr, addrlen);	// Added by terry
				  count++;																		// Added by terry

                if (bytesRcvd > 0) {
                    bytesSent = sendto(server, buffer, bytesRcvd, 0,
                            (struct sockaddr *)&clientAddr, addrlen);
                    if (bytesSent < 0 || bytesSent != bytesRcvd) {
                        System_printf("Error: sendto failed.\n");
                        goto shutdown;
                    }
                }
            }
        }
    } while (status > 0);

shutdown:
    if (server > 0) {
        close(server);
    }
}

/*
 *  ======== main ========
 */
int main(void)
{
    /* Call board init functions */
    Board_initGeneral();
    Board_initGPIO();
    Board_initEMAC();

    /* Turn on user LED */
    GPIO_write(Board_LED0, Board_LED_ON);

    System_printf("Starting the UDP Echo example\nSystem provider is set to "
                  "SysMin. Halt the target to view any SysMin contents in"
                  " ROV.\n");
    /* SysMin will only print to the console when you call flush or exit */
    System_flush();

    /* Start BIOS */
    BIOS_start();

    return (0);
}

This code comes directly from the example highlighted in the picture below:

Also, versions i'm using:
 CCS Version: 6.1.0.00104
tirtos_tivac_2_14_00_10
TivaWare_C_Series-2.1.1.71
XDCtools Version 3.31.1.33_core