Reading live stream data from a terminal host

Question

I am using a terminal as a host to input data (via copy/paste an arbitrary set of characters into the terminal). I want to capture this stream of data in my application.

I am using this code sample as a client to listen to the host. However, the output I receive is a small string, not equal to the size of the buffer. I anticipated the code to print out the string, equal to the size of the buffer.

> buffer size = 100;
> --
> sample input (copy/pasted into terminal): "here is a random string" 
>
> current output: "h" 
> expected output: "here is a random string"

How would I capture this "live" stream of data and have output consistent with the buffer, instead of a small string?

Does `freeaddrinfo()` before calling `recv()` have a bad effect? — ryyker, Sep 30 '13 at 21:06
@ryyker See [my answer](http://stackoverflow.com/a/19103955/1121302). I was relying on `recv()` to gather **all** data. — , Sep 30 '13 at 21:13

score 2 · Accepted Answer · edited May 23 '17 at 12:25

2

After some investigation, the recv() function is not guaranteed to gather all data I want.

To do this, I followed: https://stackoverflow.com/a/12696176/1121302

Now, I get my expected output.

edited May 23 '17 at 12:25

Community

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answered Sep 30 '13 at 21:12

score 0 · Answer 2 · answered Sep 30 '13 at 21:07

0

It looks like they are using the UDP protocol and not TCP which guarantees the delivery and order. Even the page you linked mentioned this half way down the page.

Remember: data sent using UDP datagram sockets isn't guaranteed to arrive!

answered Sep 30 '13 at 21:07

Freddie

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***[More](http://www.microhowto.info/howto/listen_for_and_receive_udp_datagrams_in_c.html)*** on the topic. – ryyker Sep 30 '13 at 21:11

Reading live stream data from a terminal host

2 Answers2