import okhttp3.OkHttpClient

import okhttp3.Request

import okio.Buffer

final String body = new OkHttpClient().newCall(new Request.Builder().url('http://www.iana.org/assignments/tls-parameters/tls-parameters.xml').build()).execute().body().string()

final Iterable list = new XmlSlurper().parseText(body);

final Buffer buffer = new Buffer();

list.registry.find {

it.@id == 'tls-parameters-4'

}.record.collectEntries {

String description = it.description.text()

if (description.startsWith('TLS')) {

String[] values = it.value.text().split(',')

assert values.length == 2

assert values[0].length() == 4

assert values[1].length() == 4

buffer.writeByte(Integer.parseInt(values[0].substring(2), 16))

buffer.writeByte(Integer.parseInt(values[1].substring(2), 16))

return [ (buffer.readShort()): description ]

}

else {

return [:]

}

}.each {

println "map.put((short)${it.key}, \"${it.value}\");"

}