perl socket

Shell Programming and Scripting
1

Hello there:
What is default value of listen if I, avoid init it on constructor. I need maximum num for Listen. I want to write a daemon thus i need unlimited listen.

my $sock = IO::Socket::INET->new( Listen    => 20,
LocalPort => $port,
Reuse     => 1)

Thanks in advance.

2

AFAIK, the Listen option only defines the listen queue, eg. the maximum number of concurrent connection tries. As soon as your program accept()s a connection one of these slots gets freed.
And I'd suggest not allowing unlimited connections for your daemon as this might kill your system if too many resources are used.

3

From perlipc:

Listen

The Listen parameter is set to the maximum number of pending connections we can accept until we turn away incoming clients. Think of it as a call-waiting queue for your telephone. The low-level Socket module has a special symbol for the system maximum, which is SOMAXCONN.

4

Mr Pludi and Kevin, Thanks a lot.