# Maps UID to Server Socket
    variable srvmap
    variable srvuid 0

    # Over-ride this if you are using a different socket command
    variable socketCmd
    if {![info exists socketCmd]} {
        set socketCmd [info command ::socket]
    }

    # This is the possible arguments to tls::socket and tls::init
    # The format of this is a list of lists
    ## Each inner list contains the following elements
    ### Server (matched against "string match" for 0/1)
    ### Option name
    ### Variable to add the option to:
    #### sopts: [socket] option
    #### iopts: [tls::import] option
    ### How many arguments the following the option to consume
    variable socketOptionRules {
        {0 -async sopts 0}
        {* -myaddr sopts 1}
        {0 -myport sopts 1}
        {* -type sopts 1}
        {* -alpn iopts 1}
        {* -cadir iopts 1}
        {* -cafile iopts 1}
        {* -castore iopts 1}
        {* -cert iopts 1}
        {* -certfile iopts 1}
        {* -cipher iopts 1}
        {* -ciphersuites iopts 1}
        {* -command iopts 1}
        {* -dhparams iopts 1}
        {* -key iopts 1}
        {* -keyfile iopts 1}
        {* -password iopts 1}
        {* -post_handshake iopts 1}
        {* -request iopts 1}
        {* -require iopts 1}
        {* -securitylevel iopts 1}
        {* -autoservername discardOpts 1}
        {* -server iopts 1}
        {* -servername iopts 1}
        {* -session_id iopts 1}
        {* -ssl2 iopts 1}
        {* -ssl3 iopts 1}
        {* -tls1 iopts 1}
        {* -tls1.1 iopts 1}
        {* -tls1.2 iopts 1}
        {* -tls1.3 iopts 1}
        {* -validatecommand iopts 1}
        {* -vcmd iopts 1}
    }

    # tls::socket and tls::init options as a humane readable string
    variable socketOptionsNoServer
    variable socketOptionsServer

    # Internal [switch] body to validate options
    variable socketOptionsSwitchBody
}

proc tls::_initsocketoptions {} {
    variable socketOptionRules
    variable socketOptionsNoServer
    variable socketOptionsServer
    variable socketOptionsSwitchBody

    # Do not re-run if we have already been initialized
    if {[info exists socketOptionsSwitchBody]} {
        return
    }

    # Create several structures from our list of options
    ## 1. options: a text representation of the valid options for the current
    ##             server type
    ## 2. argSwitchBody: Switch body for processing arguments
    set options(0) [list]
    set options(1) [list]
    set argSwitchBody [list]
    foreach optionRule $socketOptionRules {
        set ruleServer [lindex $optionRule 0]
        set ruleOption [lindex $optionRule 1]
        set ruleVarToUpdate [lindex $optionRule 2]
        set ruleVarArgsToConsume [lindex $optionRule 3]

        foreach server [list 0 1] {
            if {![string match $ruleServer $server]} {
                continue
            }

            lappend options($server) $ruleOption
        }

        switch -- $ruleVarArgsToConsume {
            0 {
                set argToExecute {
                    lappend @VAR@ $arg
                    set argsArray($arg) true
                }
            }
            1 {
                set argToExecute {
                    incr idx
                    if {$idx >= [llength $args]} {
                        return -code error "\"$arg\" option must be followed by value"
                    }
                    set argValue [lindex $args $idx]
                    lappend @VAR@ $arg $argValue
                    set argsArray($arg) $argValue
                }
            }
            default {
                return -code error "Internal argument construction error"
            }
        }

        lappend argSwitchBody $ruleServer,$ruleOption [string map [list @VAR@ $ruleVarToUpdate] $argToExecute]
    }

    # Add in the final options
    lappend argSwitchBody {*,-*} {return -code error "bad option \"$arg\": must be one of $options"}
    lappend argSwitchBody default break

    # Set the final variables

    set idx [lsearch $args -server]
    if {$idx != -1} {
	set server 1
	set callback [lindex $args [expr {$idx+1}]]
	set args [lreplace $args $idx [expr {$idx+1}]]

	set usage "wrong # args: should be \"tls::socket -server command ?options? port\""
        set options $socketOptionsServer
    } else {
	set server 0

	set usage "wrong # args: should be \"tls::socket ?options? host port\""
        set options $socketOptionsNoServer
    }

    # Combine defaults with current options
    set args [concat $defaults $args]

    set argc [llength $args]
    set sopts {}

	if {($idx + 2) != $argc} {
	    return -code error $usage
	}

	set host [lindex $args [expr {$argc-2}]]
	set port [lindex $args [expr {$argc-1}]]

        # If an "-autoservername" option is found, honor it
        if {[info exists argsArray(-autoservername)] && $argsArray(-autoservername)} {
            if {![info exists argsArray(-servername)]} {
                set argsArray(-servername) $host
                lappend iopts -servername $host
            }
        }

	lappend sopts $host $port
    }
    #
    # Create TCP/IP socket
    #
    set chan [eval $socketCmd $sopts]