Proxsneak/lib/CheckConn

#!/usr/bin/env bash

# shellcheck shell=bash

# ``````````````````````````````````````````````````````````````````````````````
# Function name: CheckConn()
#
# Description:
#   Check connection to remote host.
#
# Usage:
#   CheckConn host port
#
# Examples:
#   CheckConn 172.20.20.50 22
#

function CheckConn() {

  # shellcheck disable=SC2034
  local _FUNCTION_ID="CheckConn"
  local _STATE=0

  local _port="$1"

  # shellcheck disable=SC2154
  timeout 1 bash -c "</dev/tcp/127.0.0.1/${_port}" >>"$_log_stdout" 2>&1

  _STATE="$?"

  return $_STATE

}