Persistent Socket

ricardo_leite

Hi all,

I´m having serius problems with socket connections in my project... I need to open a socket connection and collect data in several different php pages...

Well, imagine that I´m opening a socket connection in page1.php, then I need to go to a form in page2.php and use the same connection, and so on for page3.php, page4.php, etc...

Is there any way to keep this socket opened through several pages, like a session? otherwise I´ll have to repeat the same steps many times during my process... 😕

Thanx a lot!!

matt_4013

http://www.php.net/pfsockopen

ednark

i don't think you can achieve the effect you are looking for with persistent sockets in php, it won't save the communication state between page calls of the socket, just the raw connection itself i believe...

at the moment php does not mimic the constant connectedness of a java-applet.

maybe if you explain a little more about where you are socketing to and what happens on the different pages someone might have a better idea of how to achieve what you want in a more round-about way

ricardo_leite

Ed,

First of all, thanx for your time.

Well, I have to exchange strings with a server running a Java application, wich was build to work with socket connections. So far, the system uses a specific hardware (a little machine), programmed in C to do this transactions, but we´re building a web interface in PHP that can work just like the machine itself, once the only thing it does is send/receive strings. The problem is that once this machine is connected it uses only one socket connection from the beggining to the end of the transaction, but with PHP I don´t think it´s possible. I think I´ll create many connections as needed during the procces, once I have a control (a kind of ID) inside each string, that identifies the transaction number. With this ID, I can continue the transaction anytime from any point, if it was interrupted somehow.

Was not the solution I wanted, but I think is the only possible one, 'cause I have to implement this untill tomorrow.. :rolleyes:

kind regards and thanks a lot 🙂

Ricardo

superwormy

An option might be to make an eternally running PHP or Perl shell script or something... which maintains a connection to the machine indefinitally.

Then, your PHP script connects to that script... and just relays the information over through that script...

Did that make sense?

ednark

ricardo, your id passing plan sounds like the only one that works...
conratulations you just invented a solution to statelessness using sessions, seems to me someone else decided this is the only way to deal with things also in your situation

superwormy

Mine will work too, just talked to some guys who did something very similar with Perl.

www.php.net/listen()
www.php.net/fsockopen()

ricardo_leite

Guys, thanx for your time

Ed, thanx for the support, I´m very happy with your comments 😃 It really worked, is fast and so far is reliable, so I´m doing this way. 😉

Superwormy, your solution was my first intention... but I don´t have either time and know-how to do that now. Actually, my solution is faster to implement (is also implemented). I kwon that the hurry passes and the shit stays, and that´s why I´ll work in a 2nd version using a kind of component (I used to do that when I worked with ASP, using VB DLLs), probably made in Pearl. The question is... is´s a little site, but for a VERY large use; We will surely have some thousands of users. Will this Perl scrip be fast and reliable enought (I don´t know Pearl...)😕 ?