How can I flush the contents of a modem's buffer while still maintaining a
valid connection? The function should clear all pending data from the modem,
so that the next item read in is new data.
Look up BREAK signal handling in your modem manual. Some modems can
be configured to do different things upon receiving a BREAK signal, one
of them being to flush the buffer.
"Nice shark...pretty shark..." -- Londo, "The Gathering"
at the university I am trying to write a fast client/server application
using RPC (tcp mode).
For this I am trying to force RPC to buffer RPC calls which do not need a return
value locally at the client. This should greatly increase the speed of
my application as I do not have to wait for the servers response at every call.
I have figured out to use the buffered clnt_call
(see RPCs clnt_tcp.c:
* TCP based RPC supports 'batched calls'.
* A sequence of calls may be batched-up in a send buffer. The rpc call
* return immediately to the client even though the call was not necessaril
* sent. The batching occurs if the results' xdr routine is NULL (0) AND
* the rpc timeout value is zero (see clnt.h, rpc).
This buffers the RPC locally at the client, but seem not send the RPC call
to the server regulary.
How do I force RPC to send the buffer contents from the client to the server?
(how do I flush the buffer).
Any hint is appreciated.