sockets and freezing code

[Anon]

Hi there,

I've made a shell script using php. It's main function is an IRC bot. I've had the need to move from using the fsockopen() function to the more C-like socket() and connect() functions since I want to start using nonblocking sockets combined with select(). I couldn't use the read() and write() functions - they simply refused to work. I'm using the recv() and send() functions instead (undocumented).

One really perplexing problem I'm having is that my script simply freezes sometimes when handling a lot of i/o. If you kill and restart the script it's fine.

I know the sockets module of PHP is experimental, but has anyone else experienced something like this?

Thanks,
Aragon

[ame12]

Well IMO if you're trying to do some specialized high-performance socket stuff, PHP may not be the answer. Can you create a CGI (in C for instance) that will do the low-level socket stuff you need. Then communicate w/the CGI using fopen or fsockopen (HTTP requests) to the same server. The output of the CGI would contain any data your PHP app needs. The inputs would be stuff that the CGI needs, invoked as form arguments.

Just a thought. Dave

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[Anon]

I hear you. All the stuff I've done so far in php has been with the help of some C docs. I know very very little about C at this stage and was hoping I could avoid learning it to accomplish this 🙂. I've also heard that string processing and database connectivity can be a bit of a stinger in C.

If I can't find a solution I'll have to try C. It is run from a shell so it doesn't need a web frontend at this stage. Thanks for the input. 🙂

Regards,
Aragon

[cvincent]

String processing/manipulation is a bit different in C but not to bad once you get used to it and how C works. Database connectivity in C is much like that in PHP. Here is a C snippit:

MYSQL mysql;
int dbconnect (void) {
if (!(mysql_connect(&mysql,"localhost","mysql","password"))) {
log("unable to connect to mysql database...aborting");
return(-1);
}
if (mysql_select_db(&mysql,"database")) {
log("unable to find database 'scanalyze'...aborting");
return(-1);
}
return(0);
}

so its not that much different, and the query process is almost the same too. Check out the docs on libmysqlclient.

-Chris

[Anon]

Doesn't look hard at all! I guess it's time I learn it then. 🙂

Thanks,
Aragon