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Re: [tcf-dev] (no subject)
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> No data may be lost.
No data is lost while a client has the stream open.
> If the client cannot receive data in the same speed as the service produces data, I need a callback.
"client cannot receive data in the same speed" means virtual_stream_add_data() will reject some of the data,
i.e. data_size < buf_size. You check for this with simple if statement, no need for callback.
Your 'cb_fun' will be called when the stream will have space available for more data.
Regards,
Eugene
-----Original Message-----
From: tcf-dev-bounces@xxxxxxxxxxx <tcf-dev-bounces@xxxxxxxxxxx> On Behalf Of Lillieskold, Claes
Sent: Wednesday, May 15, 2019 10:01 AM
To: TCF Development <tcf-dev@xxxxxxxxxxx>
Subject: [tcf-dev] (no subject)
EXTERNAL EMAIL
Hi,
I'm implementing a new service which will send data to the service client, and planned
on using 'Streams' service for this.
So the new service in the current form, creates a Stream with virtual_stream_create,
setting access to VS_ENABLE_REMOTE_READ and a callback (call it 'cb_fun'), and starts sending data using
virtual_stream_add_data.
If there is a client of the service, I also have the following needs:
1. No data may be lost.
2. If the client cannot receive data in the same speed as the service produces data,
I need a callback.
Is this scenario supported by Streams, and if so, how do I get my callback, or alternatively
a check that can be used to determine if the service can call virtual_stream_add_data
(if the client can receive) or, the client is not ready to receive if the flow should be halted.
Thanks,
Claes
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