#include <AppleTalk.h> AppleTalk Manager

OSErr ATPResponse(abRecord , async);

ATATPRecHandle abRecord; handle to an ATATPRec

Boolean async ; 0=await completion; 1=immediate return

returns Error Code; 0=no error

ATPResponse is part of the AppleTalk alternate interface. It is

recommended that you use the preferred call, PSendResponse instead.

ATPResponse sends a response packet to another socket.

abRecord is a handle to an ATATPRec structure. The relevant fields are as

¨ abOpcode ABCallType 1 0 Always tATPResponse

Æ atpSocket short 2 0 Responding socket number

Æ atpAddress AddrBlock 4 2 Destination socket address

Æ atpRspUData long 4 46 User bytes received in response

Æ atpRspBuf Ptr 4 50 Number of elements in responseBDS

Æ atpRspSize short 2 54 Number of response packets received

async is a Boolean value. Use FALSE for normal ( synchronous) operation

or TRUE to enqueue the request and resume control immediately. See

Returns: an operating system Error Code. It will be one of:

badATPSkt (-1099) Bad ATP-responding socket

noDataArea (-1104) Too many outstanding ATP calls

Notes: ATPResponseis functionally analogous to ATPSndRsp. It sends a

response to another socket, but does not require the caller to provide a BDS.

ATPAddress must contain the complete network address of the socket to

which the response should be sent (taken from the data provided by an

ATPGetRequest call) ATPTransID must contain the transaction ID.

ATPSocket indicates the socket from which the response should be sent (the

socket on which the corresponding ATPGetRequest was issued).

ATPRspBuf points to the buffer containing the response message; the size

of this buffer must be passed in atpRspSize. The four user bytes to be sent

in the ATP header of the first response packet are passed in atpRspUData.

The last packet of the transaction response is sent with the EOM flag set.

Although you do not provide a BDS, ATPResponse in fact creates one and

calls the .ATP driver (as in an ATPSndRsp). For this reason, the abRecord

fields atpRspBDSPtr and atpNumBfs are used by ATPResponse; you should

not expect these fields to remain unaltered during or after the function's

During exactly-once transactions ATPResponse will not complete until

the release packet is received or the release time expires.

Warning: The maximum permissible size of the response message is