Releasing not used Streaming plugin ports

General
1

Hi there,

Right now I am creating a Streaming stream by doing the following:

                    const create = {
                        request: 'create',
                        type: 'rtp',
                        is_private: false,
                        media: [
                            {
                                type: 'video',
                                mid: 'v1',
                                label: 'Board video stream',
                                port: 0,
                                pt: 96,
                                codec: janusServer.config_videocodec,
                            },
                        ],
                        permanent: false,
                    };

                    pluginHandle.send({
                        message: create,
                        success: (data: any) => {
                            if (data && data.created && data.stream) {
                                resolve(data.stream);
                            } else {
                                reject(`Error creating stream on ${janusServer.hostname}`);
                            }
                        },
                        error: (error: any) => {
                            reject(`Error creating stream on ${janusServer.hostname}: ${error}`);
                        },
                    });

It randomly assigns the next available port starting from 10000. How can I reset the ports, or let the plugin clear ‘old’ and unused ports to that it won’t go up to 20000.

Kind regards,
Jesse de Wild

2

You can’t. The code has a slider that moves any time a port is used, and is only reset when it gets to the top. It’s an optimization a user contributed a few years ago, because otherwise each time you created a new mountpoint we would first try and bind to a whole bunch of ports that might likely be taken already, causing a ton of failed system calls before finding a usable port.

See here for context: that was for the NoSIP plugin, which had a port range before the Streaming plugin, and whose code we copied there.

3

Do if we assign the ports automatically, we do not need to worry about ports not releasing? That it will always get a unused port?

4

Ports are always released when a mountpoint is destroyed. You simply don’t get a same port as before next time you assign ports automatically until the slider wraps.