cjihrig

1. Place server.js and sse.html in the same directory
2. npm install hapi nipple
3. node server.js
4. In browser that supports Server Sent Events, navigate to http://localhost:3000/sse.html

• Navigating to this page triggers a connection to /stream.
• /stream connects to /events and proxies the data back to the client.
• /events provides the actual Server Sent Events stream.

cjihrig

Install SmartOS in VirtualBox

http://www.perkin.org.uk/posts/automated-virtualbox-smartos-installs.html

save the following as setup.sh and run it:

#!/bin/sh
#
# Configurables:

cjihrig

MDB is unlike most debuggers you've experienced.

It is not a source level debugger like gdb or lldb or even Node's builtin debugger

Generally used for postmortem analysis.

Postmortem is for Production and Development

We operate mostly on core files, though you can attach to running processes as well.

cjihrig

Installing V8 on a Mac

Prerequisites

• Install Xcode (Avaliable on the Mac App Store)
• Install Xcode Command Line Tools (Preferences > Downloads)

Build V8

• git clone [email protected]:v8/v8.git

cjihrig

build

Clone and build Node for analysis:

$ git clone https://github.com/joyent/node.git
$ cd node
$ export GYP_DEFINES="v8_enable_disassembler=1"
$ ./configure
$ make -j4

cjihrig

Keybase proof

I hereby claim:

• I am cjihrig on github.
• I am cjihrig (https://keybase.io/cjihrig) on keybase.
• I have a public key whose fingerprint is 94AE 3667 5C46 4D64 BAFA 68DD 7434 390B DBE9 B9C5

To claim this, I am signing this object:

cjihrig

Prerequisites : the letsencrypt CLI tool

This method allows your to generate and renew your Lets Encrypt certificates with 1 command. This is easily automatable to renew each 60 days, as advised.

You need nginx to answer on port 80 on all the domains you want a certificate for. Then you need to serve the challenge used by letsencrypt on /.well-known/acme-challenge. Then we invoke the letsencrypt command, telling the tool to write the challenge files in the directory we used as a root in the nginx configuration.

I redirect all HTTP requests on HTTPS, so my nginx config looks like :

server {

cjihrig

Challenges in using post-mortem debugging with async/await

Introduction

async/await is a new feature of the EcmaScript programming language that combines generators and promises to improve the language-level model for writing asynchronous code.

It is [currently in "stage 3"](https://github.com/tc39/ecma262#current- proposals) of the TC39 process,

cjihrig

Here is how to create a cloud-init disk image and OS disk image suitable for configuring into a libvirt domain file.

In my case I am naming my domain (a.k.a. virtual machine or VM) xenial with a static IP address of 192.168.0.101. The filenames "network-config" and "user-data" files are arbitrary, so they can be named with a prefix for the domain, etc.

First, get the cloud image and convert into QCOW2 format:

qemu-img convert -O qcow2 xenial-server-cloudimg-amd64-disk1.img xenial-server-cloudimg-amd64-disk1.qcow2

cjihrig

#include "uvwasi.h"


__wasi_errno_t __wasi_args_get(char** argv, char* argv_buf) {
  return __WASI_ENOTSUP;
}


__wasi_errno_t __wasi_args_sizes_get(size_t* argc, size_t* argv_buf_size) {
  return __WASI_ENOTSUP;