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# Watch for read readiness on a filehandle.
$kernel->select_read( $file_handle, $event, @optional_args );

($k, $sock, $optarg1) = @_[KERNEL, ARG0, ARG1];

Select events include two parameters.

...
ARG1 contains 0, 1, or 2 to indicate whether the filehandle is ready f
+or reading, writing, or out-of-band reading (otherwise knows as "expe
+dited" or "exception").

ARG2..$#_ contain optional additional parameters passed to POE::Kernel
+'s various I/O watcher methods.

($k, $sock, $status, $optarg1) = @_[KERNEL, ARG0, ARG1, ARG2];