#ifndef INCtransferh
#define INCtransferh

#include <netinet/in.h>  /* finds #includes to define the types used in the HEADER */

typedef struct block_header {              /* format of data block  */
        uint16_t  hdr_flags;          /* see below */
        uint16_t  hdr_stream;         /* =0 for forced ack request or 1=>MAX_STREAM  */
        uint16_t hdr_endian;         /*  =1 transmitted in host byte order */
        uint16_t hdr_spare;
        uint32_t hdr_sequence;        /* for this stream */
        uint32_t hdr_blocklength;     /*  total length of this block including the header */
        uint32_t hdr_datalength;      /*  length of user data in the block  */
        uint32_t hdr_offset;          /*  very large blocks may be fragmented  */
        uint32_t hdr_id1;             /*  for spy to locate header  =0x19062002 */
        uint32_t hdr_id2;             /*  for spy to locate header  =0x09592400 */
} HEADER;

/*
    flags   (bit 0 is lsb)
    bit 0       request = 0;  ack = 1
    bit 1       = 1  suppress ack;  =0 normal ack
    bit 2       = 1  force ack   (no data follows)
*/

#define HDR_ID1 0x19062002
#define HDR_ID2 0x09592400

typedef struct ack {
        uint16_t acq_flags;          /* bit 0 = 1 for ack  */
        uint16_t acq_code;           /* =0 for good ack otherwise error reason */
        uint16_t acq_ts_state;       /* tape server state - see below */
        uint16_t acq_stream;         /* =0 for forced ack ack or 1=>MAX_STREAM  */
        uint16_t acq_endian;         /* =1 transmitted in host byte order */
        uint16_t acq_spare;
        uint32_t acq_sequence;        /* for stream != 0 is sequence being acked */
        uint16_t acq_stream_state1;           /* see below  */
        uint16_t acq_stream_state2;           /*   */
        uint16_t acq_stream_state3;           /*   */
        uint16_t acq_stream_state4;           /*   */
        uint16_t acq_stream_window1;          /*   */
        uint16_t acq_stream_window2;          /*   */
        uint16_t acq_stream_window3;          /*   */
        uint16_t acq_stream_window4;          /*   */
} ACK;
 
typedef struct stream_status {
    uint32_t str_state;
    uint32_t str_sequence;
    uint32_t str_window;
} STREAM;
 

int transferTxData (char *, unsigned int, int);
int transferTxRestart ();
int transferBlockSize(int);
int transferMode(int);
int transferEndian(int);
int trasnferBlockMode(int);
int transferPort(int);
int transferInit (char *);
void transferClose ();
int transferStatus ();
int transferSetVerbose(int);
int transferSetUser(int);
int transferNice(int);
int transferUseOverlap(int);
int transferTxWait();
int transferState();
int transferSndBufSize(int);


#endif