A Node.js Addon to get sockets from launchd upon (port-activated) launching on osx
Suppose, you created an app using express in directory
/Users/you/Projects/yourapp
, and your node installation lives in
/Users/you/Applications/Node.app/Contents
and you want your app to use port 8080.
First, create a launchd configuration file (e.g., yourapp.plist) in
~/Library/LaunchAgents
, fill it with content such as this
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>Label</key>
<string>org.something.yourapp</string>
<key>EnvironmentVariables</key>
<dict>
<key>NODE_PATH</key>
<string>/Users/you/Applications/Node.app/Contents/lib/node_modules</string>
</dict>
<key>ProgramArguments</key>
<array>
<string>/Users/you/Applications/Node.app/Contents/bin/node</string>
<string>/Users/you/Projects/yourapp/app.js</string>
</array>
<key>Sockets</key>
<dict>
<key>HTTPSocket</key>
<dict>
<key>SockFamily</key>
<string>IPv4</string>
<key>SockServiceName</key>
<string>8080</string>
<key>SockType</key>
<string>stream</string>
<key>SockPassive</key>
<string>false</string>
</dict>
</dict>
</dict>
</plist>
change the app.js file in you project directory to start the http server using a launchd file handle like this
http.createServer(app).listen({fd:require('node-launchd').getSocketFileDescriptorForName('HTTPSocket')});
Finally, you can load the launchd configuration file like this
launchctl load -w ~/Library/LaunchAgents/yourapp.plist
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