Emmit small socket datas

[artggd]

fix #288
data test updated -> handleData($stream)

[staabm]

unrelated change

[cboden]

Can you add a unit test that demonstrates this fix and fails on the existing code please?

[artggd]

So, after a long debugging phase, I found out the problem occurs when sending data from a socket in python language. I don't really know where is the difference between a socket in php and in python, Even after analysing the packets, I can't see any differences ...
Anyway, I pushed units tests for python on my fork (master). It works with my modification and fails with the existing code.

[cboden]

Excellent test case! Here's what I think is happening:

1. Python queues data to be sent to the server
   1.1) When you send >4096 (or w/e the limit is) the write buffer is flushed and data sent throughout the pipe - all is well, stop here
   1.2) Sending a small amount TCP, as per its specification, chooses not to send it yet
2. Python sends the shutdown signal that it's finished writing, but remains open for listening
3. The write buffer and shutdown signal are sent over the wire
4. React receives that data in its read buffer as well as the write shutdown signal
5. PHP streams, specifically feof, can't detect the difference between shutdown signals and sees the whole stream as closed and emits an end() event

Your fix is good, it will check the read buffer and then check if it was closes. I'm going to attempt to re-work the unit test to use PHP and then merge it.

[artggd]

It's probably something like that, maybe a deeper analysis of the packets could confirm.
Glad to hear my small fix helped ! ;)

[cboden]

I ended up cherry picking (I know, scold me) your changes into the 0.4 branch, replacing with a phpunit test, tagged v0.4.1, and merged back into master.

Thanks @artydev!

[cboden]

Just for reference I also made a slight fix: ebf704e#diff-77e069da74242a16d316721cb77c42beR14