/* 

    UDPPB.h 

    C definitions of parameter block entries needed for UDP calls

    Copyright Apple Computer, Inc. 1988-89 

    All rights reserved

*/

#define UDPCreate       20

#define UDPRead         21

#define UDPBfrReturn    22

#define UDPWrite        23

#define UDPRelease      24

#define UDPMaxMTUSize   25

#define UDPCtlMax       29

typedef enum UDPEventCode {

    UDPDataArrival = 1,

    UDPICMPReceived,

    lastUDPEvent = 65535

    };

typedef pascal void (*UDPNotifyProc) (

        StreamPtr udpStream, 

        unsigned short eventCode, 

        Ptr userDataPtr,

        struct ICMPReport *icmpMsg);

typedef void (*UDPIOCompletionProc) (struct UDPiopb *iopb);

typedef unsigned short  udp_port;

typedef struct UDPCreatePB {            /* for create and release calls */

    Ptr             rcvBuff;

    unsigned long   rcvBuffLen;

    UDPNotifyProc   notifyProc;

    unsigned short  localPort;

    Ptr             userDataPtr;

} UDPCreatePB;

typedef struct UDPSendPB {

    unsigned short  reserved;

    ip_addr         remoteHost;

    udp_port        remotePort;

    Ptr             wdsPtr;

    Boolean         checkSum;   

    unsigned short  sendLength;

    Ptr             userDataPtr;

} UDPSendPB;

typedef struct UDPReceivePB {       /* for receive and buffer return calls */

    unsigned short  timeOut;

    ip_addr         remoteHost;

    udp_port        remotePort;

    Ptr             rcvBuff;

    unsigned short  rcvBuffLen;

    unsigned short  secondTimeStamp;

    Ptr             userDataPtr;

} UDPReceivePB;

typedef struct UDPMTUPB {

    unsigned short  mtuSize;

    ip_addr         remoteHost;

    Ptr             userDataPtr;

} UDPMTUPB;

typedef struct UDPiopb {

    char                fill12[12];

    UDPIOCompletionProc ioCompletion;

    short               ioResult;

    char                *ioNamePtr;     

    short               ioVRefNum;      

    short               ioCRefNum;          

    short               csCode;

    StreamPtr           udpStream;              

    union {

        struct UDPCreatePB  create;

        struct UDPSendPB    send;

        struct UDPReceivePB receive;

        struct UDPMTUPB     mtu;

    } csParam;

} UDPiopb;