gawk networking problem

[XyXyber]

Dear guys,

Why your own examples from page 10 in "TCP/IP Internetworking with gawk"
doesn't run under GNU Awk 3.1.6 neither under NetBSD nor under Windows
Cygwin:

# --------------------------------------------------------------------

# Server
BEGIN {
print strftime() |& "/inet/tcp/8888/0/0"

close("/inet/tcp/8888/0/0")
}

# --------------------------------------------------------------------

It fails with error message: 
"fatal: remote host and port information (0, 0) invalid"

Best regards

Frank