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def catchAndThrow(flow)
  i = 0
  if (flow == :return) then
    return i
  end

  catch do |label|
    # TODO:  something useful
    i += 1
    throw label if (flow == :throw)

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import assert from 'assert';
import { matchURI } from './matchURI.mjs';

assert.deepStrictEqual(matchURI('UNPARSEABLE'), {
  uri: 'UNPARSEABLE',
  id: undefined,
  reason: 'error',
});
assert.deepStrictEqual(matchURI('https://stealth.mil/resource/SECRET'), {
  uri: 'https://stealth.mil/resource/SECRET',

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import { URL } from 'url';

const DOMAINS = new Set([ 'example.com', 'alternate.net' ]);
const SEGMENTS = new Set([ 'query', 'search' ]);

export function matchURI(uri) {
  let id = undefined;
  let url;

  try {

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/**
 * Socket.io => Client => Listener
 */

function onSocketMessage: (channel_id, array_buffer) =>
  // ArrayBuffer => String
  //   http://updates.html5rocks.com/2012/06/How-to-convert-ArrayBuffer-to-and-from-String
  json = String.fromCharCode.apply(null, new Uint8Array(array_buffer));

  try {

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/**
 * Redis => Server => Socket.io
 */

function onRedisMessage(channel, message) {
  var json;
  try {
    json = JSON.parse(message);
  }
  catch (err) {

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map $http_upgrade $connection_upgrade {
    default upgrade;
    '' close;
}

upstream server_cluster {
    # sticky connections are critical for non-WebSocket Socket.io
    #   http://socket.io/docs/using-multiple-nodes/
    ip_hash;

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#!/bin/bash
#
# https://gist.github.com/trevnorris/9616784

sudo sysctl kernel.kptr_restrict=0
sudo sysctl kernel.perf_event_paranoid=0
sudo sysctl kernel.perf_event_mlock_kb=65536

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#!/bin/bash
#
# https://askubuntu.com/questions/197016/how-to-install-a-package-that-contains-ubuntu-kernel-debug-symbols
# https://wiki.ubuntu.com/DebuggingProgramCrash#Debug_Symbol_Packages

echo "deb http://ddebs.ubuntu.com $(lsb_release -cs) main restricted universe multiverse" | sudo tee -a /etc/apt/sources.list.d/ddebs.list
echo "deb http://ddebs.ubuntu.com $(lsb_release -cs)-updates main restricted universe multiverse" | sudo tee -a /etc/apt/sources.list.d/ddebs.list
echo "deb http://ddebs.ubuntu.com $(lsb_release -cs)-proposed main restricted universe multiverse" | sudo tee -a /etc/apt/sources.list.d/ddebs.list
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys ECDCAD72428D7C01
sudo apt-get update

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#!/bin/bash
#
# https://perf.wiki.kernel.org/index.php/Main_Page
# https://perf.wiki.kernel.org/index.php/Tutorial#Sampling_with_perf_record
# https://perf.wiki.kernel.org/index.php/Tutorial#Sample_analysis_with_perf_report

sudo apt-get install -y linux-tools-`uname -r`
sudo apt-get install -y linux-tools-common
sudo apt-get install -y linux-cloud-tools-`uname -r`
sudo apt-get install -y linux-cloud-tools-common

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daemonize yes
logfile "/var/log/redis/redis-server.log"
save ""
dir /tmp

# lots of connections
maxclients 10000

# low tolerance for under-run
#   otherwise, redis-server gets a memory leak