StreamLink

Documentation for the serverside implementation of StreamLink, a MIT App Inventor Extension designed to allow for video and data transfer between devices across networks.

Quick Info

SSL is not currently enabled
Passwords are hashed server side
Communication between devices and server is handled by socket.io
DeviceIDs are currently set client side and are not enforced. This will be changed in the future.

Links

Links are stored in volatile memory of the server do save any message information.

class Link {
    constructor(device_id, link_password) {
        this.owner_id = device_id
        this.link_password = link_password
        this.last_message = new Date().getTime()
        this.link_code = ""
    }

    generateLinkCode(){
        var code = Math.random().toString(36).substr(2, 4).toUpperCase()

        // Filter Code

        this.link_code = code
    }

}

Link codes are 4 alphanumeric characters unique only within a server and are filtered to not contain any inappropriate terms.

Future supports for reserving links is planned, as of now links are randomly assigned to devices. It is also planned for non reserved links to expire after 24 hours.

Emits

A client communicates to the server using 3 emits

createlink

Creates a new link, or if a link already exists for a device idea return that.

Returns linkcreated

joinlink

Joins a link if the password and link code match an existing link.

Returns linkjoined

message

Sends a message to a link.

Returns newmessage