Category : C Source Code
Archive   : NETCLB23.ZIP
Filename : IPXSPX.H

#ifndef IPXSPX_H
#define IPXSPX_H

/*********************************/
/* Sort out compiler differences */
/*********************************/

#ifdef TURBOC
#define _far far
#endif

/*******************/
/* Data Structures */
/*******************/

typedef struct {
byte network_number[4];
byte node_address[6];
} INTER_NETWORK_ADDR;

typedef struct {
INTER_NETWORK_ADDR ina;
nw_int socket_number;
} NETWORK_ADDR;

typedef struct {
void _far *address;
word length;
} ECB_FRAGMENT;

/*********************/
/* IPX Packet Header */
/*********************/

typedef struct {
nw_int checksum;
nw_int length;
byte transport_control;
byte packet_type; /* User Sets */
NETWORK_ADDR dest_addr; /* User Sets */
NETWORK_ADDR srce_addr;
} IPX_HEADER;

/*********************/
/* SPX Packet Header */
/*********************/

typedef struct {
IPX_HEADER ipx;
byte connection_control;
byte datastream_type; /* User Sets */
nw_int source_connection_id;
nw_int dest_connection_id;
nw_int sequence_number;
nw_int acknowledge_number;
nw_int allocation_number;
} SPX_HEADER;

/*****************************/
/* Event Control Block (ECB) */
/*****************************/

typedef struct {
void _far *link_address;
void (_far *esr)(void); /* User Sets */
byte in_use;
byte completion_code;
nw_int socket_number; /* User Sets */
byte IPX_workspace[4];
byte driver_workspace[12];
byte immediate_address[6]; /* User Sets */
word fragment_count; /* User Sets */
ECB_FRAGMENT fragment[2]; /* User Sets */
} EVENT_CONTROL_BLOCK;

/******************************/
/* SPX Connection status data */
/******************************/

typedef struct { byte connection_state;
byte watchdog_is_on;
nw_int local_connection_id;
nw_int remote_connection_id;
nw_int sequence_number;
nw_int local_acknowledge_number;
nw_int local_allocation_number;
nw_int remote_acknowledge_number;
nw_int remote_allocation_number;
nw_int local_socket;
byte immediate_address[6];
byte network_number[4];
byte node_address[6];
nw_int socket;
nw_int retransmission_count;
nw_int est_roundtrip_delay;
nw_int retransmitted_packets;
nw_int suppressed_packets;
} SPX_CONNECTION_STATUS;

/***********************/
/* Function prototypes */
/***********************/

word IPXCancelEvent( EVENT_CONTROL_BLOCK *ecb );
void IPXCloseSocket( word socketNumber );
void IPXDisconnectFromTarget( NETWORK_ADDR *networkAddress );
void IPXGetInternetworkAddress( INTER_NETWORK_ADDR *networkAddress );
word IPXGetIntervalMarker( void );
word IPXGetLocalTarget( INTER_NETWORK_ADDR *networkAddress ,
byte *immediateAddress,word *transportTime );
word IPXInitialise( void );
word IPXListenForPacket( EVENT_CONTROL_BLOCK *ecb );
word IPXOpenSocket( word *socketNumber, byte longevity );
void IPXRelinquishControl( void );
void IPXScheduleIPXEvent( EVENT_CONTROL_BLOCK *ecb , word delayTicks );
void IPXSendPacket( EVENT_CONTROL_BLOCK *ecb );

void SPXAbortConnection( word connectionID );
word SPXEstablishConnection( word retryCount, word watchdogFlag ,
EVENT_CONTROL_BLOCK *ecb ,word *connectionID );
word SPXGetConnectionStatus( word connectionID ,
SPX_CONNECTION_STATUS *connectionStatus );
int SPXInitialise( byte *majorVersion,byte *minorVersion,
word *maxConnections,word *availableConnections );
void SPXListenForConnection( word retryCount, word watchdogFlag ,
EVENT_CONTROL_BLOCK *ecb );
void SPXListenForSequencedPacket( EVENT_CONTROL_BLOCK *ecb );
void SPXSendSequencedPacket( word connectionID, EVENT_CONTROL_BLOCK *ecb );
void SPXTerminateConnection( word connectionID, EVENT_CONTROL_BLOCK *ecb );

#endif /* IPXSPX_H */