12-16-2019
Oh? Changing basic data again?
Be aware that a good, decent, stable, consistent specification helps everyone dealing with your request, saving time and efforts.
And, either of the three solutions given above can easily be adapted to your old and new and ever changing data (structures). This is left as an exercise to the interested reader.
This User Gave Thanks to RudiC For This Post:
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LEARN ABOUT DEBIAN
rpchdr
RpcHdr(3I) InterViews Reference Manual RpcHdr(3I)
NAME
RpcHdr - header for remote procedure calls
SYNOPSIS
#include <Dispatch/rpchdr.h>
DESCRIPTION
An RpcHdr enables an RPC request to be sent or received. To send an RPC request, you would insert an RpcHdr into an rpcstream followed by
any arguments and then flush the rpcstream if you wanted the request to be sent immediately. The rpcstream automatically fills in each RPC
request's length field. To receive an RPC request, you would extract an RpcHdr from an rpcstream and examine the ``request()'' member to
determine which additional arguments need to be extracted as well. You can examine the ``ndata()'' member too if you need to estimate how
much space to allocate.
CONSTRUCTORS
RpcHdr(void* writer, int request)
RpcHdr(int request)
RpcHdr()
Construct an initialized header for an outgoing RPC request (first two constructors) or construct an uninitialized header for an
incoming RPC request (third constructor). To initialize the header, you'll have to store the request's protocol number. You can
also store the address of the writer sending the RPC request if you want to route the RPC request to a specific reader on the peer's
side.
PUBLIC OPERATIONS
unsigned long reader()
int request()
unsigned int ndata()
Get information about the RPC request. ``reader()'' identifies the reader which should handle the RPC request. ``request()'' iden-
tifies the action that should be performed. ``ndata()'' gives the number of data bytes following the header, which may be useful
for estimating the amount of space that must be allocated to store an argument.
SEE ALSO
RpcReader(3I), RpcWriter(3I), rpcstream(3I)
InterViews 27 March 1991 RpcHdr(3I)