how to launchd on demand when port is specified as parameter?

Asked Feb 18 '18 at 20:02

Active Feb 18 '18 at 20:02

Viewed 340 times

I have a program I want to run on-demand using launchd by running the following command:

/usr/local/bin/godoc -http=:6060

This program starts an HTTP app that listens on the designated port 6060.

In my property list I have

<key>Sockets</key>
<dict>
    <key>default</key>
    <dict>
        <key>SockNodeName</key>
        <string>localhost</string>
        <key>SockServiceName</key>
        <integer>6060</integer>
        <key>SockPassive</key>
        <true/>
    </dict>
</dict>

However, when I start the daemon, the output from the application to stderr is:

ListenAndServe :6060: listen tcp :6060: bind: address already in use

From my understanding, launchd creates the socket and passes it to the app, but this app is trying to create the socket again so it fails.

What options do I have to run this with launchd on demand?

asked Feb 18 '18 at 20:02

JackyJohnson

1

godoc doesn't support this. Just start it up at boot. – Michael Hampton Feb 18 '18 at 20:06
@MichaelHampton I'm surprised this isn't supported as it's so common for modern web apps – JackyJohnson Feb 18 '18 at 20:11
godoc isn't a modern web app, it's a simple tool to aid developers in working offline. You can also just start it up when you need it. – Michael Hampton Feb 18 '18 at 20:15

how to launchd on demand when port is specified as parameter?

0 Answers0