stream_select(): unable to select [4]: Interrupted system call (max_fd=5)

[bigdaddymax]

After upgrading to 2.8.1 we get the ocasional following exceptions:

Fatal error: Uncaught ErrorException: stream_select(): unable to select [4]: Interrupted system call (max_fd=5) in /opt/www/sbwell.com/library/PhpAmqpLib/Wire/IO/StreamIO.php on line 474

It looks like the reason for this exception is the recent change in error_handler() function, in particular the way how specific warning is detected: #615

In previouse versions it was simple search for "Interrupted system call" substring.

Now it is looking for "errno=4":

        self::$ERRNO_EQUALS_EINTR = 'errno=' . SOCKET_EINTR;      
        
        // stream_select warning that it has been interrupted by a signal - EINTR
        if (strpos($errstr, self::$ERRNO_EQUALS_EINTR) !== false) {

The trick is that the real error string (in our case) does not contain "errno=XXX" substring at all:

stream_select(): unable to select [4]: Interrupted system call (max_fd=5)

I am not sure if the format of the error string depends on the OS or PHP version, we use PHP 7.1 and CentOS 6.10

[ramunasd]

Hi @bigdaddymax , this was fixed in version v2.9.0, please check.

[lukebakken]

Assuming fixed in the latest version. If evidence to the contrary is provided, we will re-open.

[liuyong888]

Assuming fixed in the latest version. If evidence to the contrary is provided, we will re-open.

Hi, I ran into this problem with 2.9.1 #955