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mamantoha/is_port_open.cr

Created August 21, 2019 11:02
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A quick way to find out if a given port is open with Crystal.
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is_port_open.cr
require "socket"
def is_port_open?(ip : String, port : Int32, timeout = 5)
s = TCPSocket.new(ip, port, dns_timeout: timeout, connect_timeout: timeout)
s.close
true
rescue IO::Timeout
false
end
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