Re: [Php-java-bridge-users] java.so module purpose?

[<php...@li...>]

I've learned more. My examples were wrong. Updated examples at 
http://vanstaveren.us/~trick/fbsd-nagle-localhost-errorcase/

My bug: I was not fread() / socket_read()'ing from the opened stream 
after sending packets from the client. So communication was one-way. My 
hacks on the send buffer size had fooled TCP into doing an extra round 
trip to the server which coincidentally caused the delay as well. 
Updated examples now actually send & recieve the same packets as your 
original java test case and the bug reproduces exactly in both the 
fsockopen and socket_ code. socket_set_option with TCP_NODELAY works, 
for the sockets example only of course.

My speculations about buffers and fflush() not working were false, I was 
clearly mistaken...

This means a few things:
1) I'm now a lot more confident that socket_set_option is a viable fix, 
but I don't know if it's best to move PJB to use this API just for this 
reason. What do you think? My patch was accepted; the constant 
TCP_NODELAY is available as of PHP 5.2.7-RC2.
2) After quite a bit of research, the streams library 
(fsockopen/fwrite/fread) apparently does not expose a method for me to 
set socket options. I'll raise this on the PHP ML to make sure I've not 
missed something obvious.

Might be viable to write a PHP function stream_socket_{get,set}_option 
which does the same thing as socket_{get,set}_option if that's the best 
route.

Cheers,
Patrick


php...@li... wrote:
> Hi,
>
> it is true that PHP buffers data internally. But as soon as read() is called on the same stream, the outgoing data is flushed. The problem is really the "ack delay" caused by BSD's socket implementation.
>
> I suggest to discuss this on the BSD or PHP mailing list, as this affects all PHP applications running on BSD, not only the PHP/Java Bridge.
>
>
> Regards,
> Jost Boekemeier
>
>
>
>       
>
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-- 
Patrick "Trick" van Staveren
http://trick.vanstaveren.us