Hi,
On 2010.04.30 12:39, dru...@users.sourceforge.net wrote:
+ added support for communication streams/channels which allow to
send asynchronously data from server to client.
The following client side functions had been added:
NETIO_OPENDATASTREAM(<cStreamFuncName> [,<params,...>] )
-> <nStreamID>
NETIO_OPENITEMSTREAM(<cStreamFuncName> [,<params,...>] )
-> <nStreamID>
NETIO_CLOSESTREAM(<nStreamID>, [<cServer>], [<nPort>] )
-> <lOK>
NETIO_GETDATA(<nStreamID>, [<cServer>], [<nPort>] )
-> <aData> |<cData> | NIL
The following server side functions had been added:
NETIO_SRVSTATUS(<pConnectionSocket> [,<nStreamID>] )
-> <nStatus>
NETIO_SRVSENDITEM(<pConnectionSocket>,<nStreamID>,<xData> )
-> <lSent>
NETIO_SRVSENDDATA(<pConnectionSocket>,<nStreamID>,<cData> )
-> <lSent>
Thank You for another great piece of code. I'm trying to understand the
ideas of this.
In case of item stream, received items are buffered on client side and
NETIO_GETDATA() return array of items. In case of char stream, data is
concatenated and NETIO_GETDATA() return a single stream. Function
NETIO_GETDATA() is not blocking function and returns NIL if no data are
received. Am I right?
You've mentioned in the past, that these communication streams allows
server application to give access to local resources like COM ports,
etc. In most cases, f.e. COM port, communication is bidirectional, but I
found communication stream unidirectional (from server to client). How
do you suggest to do data transfer in the opposite direction?
In the sample code, the communication streams are closed after
NETIO_DISCONNECT(). Is data transfer allowed in between of
NETIO_DISCONNECT() and NETIO_CLOSESTREAM() calls?
Are connection stream ids unique among multiple connection? As far as I
can see, each connection has it's own connection ideas, and this
requires to use additional cServer and nPort parameters to distinguish
different connections.
I see s_fileGetConnParam(), hb_socketResolveAddr(), s_fileConFind() in
NETIO_GETDATA(). Isn't this a bottleneck for applications what needs a
lot of data transfers? The same question for RPC calls.
Thanks again, regards,
Mindaugas
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