...
[pid 27966] write(4, "58\n", 3)         = -1 EPIPE (Broken pipe)
[pid 27966] --- SIGPIPE (Broken pipe) @ 0 (0) ---
Process 27966 detached
[pid 27967] <... accept resumed> 0x4219cef0, [4096]) = ? ERESTARTSYS (To be restarted)
[pid 27967] +++ killed by SIGPIPE +++
Process 27967 detached
[pid 27968] <... accept resumed> 0x4299def0, [4096]) = ? ERESTARTSYS (To be restarted)
[pid 27968] +++ killed by SIGPIPE +++
Process 27968 detached
<... futex resumed> )                   = ? ERESTARTSYS (To be restarted)
+++ killed by SIGPIPE +++

##</code><code>##

    ...
        for ($second=60; $second>0; --$second) {
                sleep 1;
                last unless print $client "$second\n";
        }
        close $client;
    ...