help with sockets

[toshog]

hi everybody...

i need a little help with sockets...

i'm able to create a socket, connect to the remote host and use socket_send to send a xml request. then i execute socket_listen() on that socket to wait for the response...
what do i do next? how do i know i got something back?...

the idea is to send a xml request through a socket and get the response...

any help will be appreciated...

thanks....

[Weedpacket]

[man]socket_read[/man], perhaps? Thing is, what socket_listen does is sit there waiting for another machine to try and connect to you on that socket.

Any particular reason why you're using the (experimental) lower-level socket_* functions instead of fsockopen()? Using that the connection looks a lot like a file.

[toshog]

no particular reason... i will try fsockopen() too....
i apologize for the stupid question but isn't fsockopen() only over http?
thanks...

this is what i have so far:

if (!$s = socket_create(AF_INET, SOCK_STREAM, SOL_TCP)) {
echo "Error:".socket_strerror(socket_last_error($s)); 
}
echo "did sock<br>";
if (!$e = socket_connect($s, "xx.xx.xx.xx", 00000) ) { 
echo "Error:".socket_strerror(socket_last_error($s)); 
 }
 echo "connected<br>";
if (!$b = socket_send ( $s, $xml, strlen($xml), 0x2) ) {	
echo "Error:".socket_strerror(socket_last_error($s)); 
}
echo "sent<br>";					
socket_close($s);

[toshog]

i tryed fsockopen()...
not a lot of luck...
this is the code:

$fp = fsockopen ("xx.xx.xx.xx.", 00000, $errno, $errstr, 30);
if (!$fp) {
    echo "$errstr ($errno)<br>\n";
} else {
    fputs ($fp, $xml);
    while (!feof($fp)) {
        echo fgets ($fp,128);
    }
    fclose ($fp);
} 

as with the other one above i don't get any errors... but with this one nothing shows up..

[toshog]

i added this to the first version of the code and it just times out.... no errors...

while( $buf = socket_read($s, 512)) { 
$c = fread( $buf, 512);
}

echo $c;

what's the best way to approach this request-response?

thanks...

[Weedpacket]

Originally posted by toshog
no particular reason... i will try fsockopen() too....
i apologize for the stupid question but isn't fsockopen() only over http?

No, it's over any protocol (rather, you open the port and do the protocol yourself). Note that in either case (certainly with fsockopen() and I'd be surprised if not with socket_*()) the messages you're sending back and forth would need to be compliant with whatever protocol you're using (e.g., with an http communication (on port 80) you'd need to write out an entire http request header before sending the content; with https (on port 443) you'd need to do all the negotiation and encryption; ditto for ftp, smtp, etc.).

Since I don't know your protocol, and haven't much to do with the socket_* functions myself, I'm afraid I won't be much further help to you.

[toshog]

the protocol is tcp.... the port is just generic port....

sorry -> i actually use fsockopen() like this:

$fp = fsockopen("tcp://xx.xx.xx.xx.", 11111, $errno, $errstr);