Re: [Twisted-Python] understanding IConsumer

Hi Glyph and David, Thanks for your answers and thanks for taking time to answer. It was indeed my wrong understanding. I was trying to understand what HTTPClientChannelRequest does in terms of producer and consumer (Its a lot deep considering me being relatively new at this). Looking further at the code I do understand that we have a producer which generates the necessary data which can be written out using the transport and we have a consumer which works of the data from the dataReceived (I hope my understanding is correct and I don't know how it is buffered and I don't know how the flow tells the consumer that there is data for use). I understand there is https://twistedmatrix.com/documents/15.4.0/core/howto/producers.html, however I was hoping if there is an example of a simple consumer which could be written using the data from dataReceived (that is assuming whatever I understood above is correct). I didn't find enough information on how to create a consumer. Thanks, -Roshan On Mon, Sep 7, 2015 at 11:37 PM, Glyph wrote:

On Sep 2, 2015, at 6:08 PM, Roshan Cherian wrote:

Hi Team,

Hi Roshan!

Sorry it took a while to get back to you. Busy week.

I am sorry if this is coming off as a newbie question. Its probably because I don't understand it enough.

Newbie questions are fine, no need to apologize :).

I would like to:

1. connectTCP to a host, port

You should not use connectTCP directly. Use Endpoints: < https://twistedmatrix.com/documents/15.4.0/core/howto/endpoints.html>. (But this doesn't affect the rest of your question.)

2. use the transport to write

Should be easy enough; `self.transport.write´.

3. Use consumer to read from the transport what the tcp server has written to

You don't need to use the producer / consumer API just to read from the transport. The transport does this automatically, and calls your protocol's dataReceived method every time data is received from the transport.

I wasn't able to find information on consumer and how it gets triggered when data is available especially in the case I have

I'm not sure what you mean about "how it gets triggered"; the producer and consumer APIs are documented here: < https://twistedmatrix.com/documents/15.4.0/core/howto/producers.html> but it would help if you could explain what *exactly* you're trying to achieve with them.

-glyph

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