t2 wifi needs filling out

[Frijol]

Current status:

• tessel wifi -l lists networks
• tessel wifi -n -p copies the wifi network into the configuration file, but doesn't check to see if the network/password are valid or if we connect

Spec: T2 CLI spec
tessel wifi

$ tessel wifi -h
> Usage: tessel wifi [-l] [-n <ssid>] [-p <pass>] [-s <security>] [--off] [-t]
>  -l:          list available networks
>  -n <ssid>:   name of the network to connect with
>  -p <pass>:   password to access network
>  -s <security>:   security protocol to connect with (i.e. WEP, WPA, PSK)
>  -t:          attempt to connect for the provided number of seconds
>  --off:       disconnect from a wifi connection
$ 

$ tessel wifi
> Connected to "technicallyWifi"
> IP Address: 192.168.128.149
> Signal Strength: 27/70
> Bitrate: 145mbps up / 24 mbps down

$ tessel wifi
> Not Connected (run 'tessel wifi -l' to see available networks)

$ tessel wifi -l
> INFO Requesting wifi status...
> Currently visible networks (10):
>   Gaumenkitzel (47/127)
>   XFBSECA7HE6H (30/127)
>   HP-Print-8f-LaserJet 200 color (49/127)
>   technicallyWifi (40/127)
>   tessel (38/127)
>   KeetsaBerkeley (37/127)
>   ATT219_EXT (38/127)
>   xfinitywifi (38/127)
>   CableWiFi (32/127)
>   Max4 (30/127)

$ tessel wifi -n test-network
> Connecting to network “test-network”...
> Connected to network “test-network”
$ 

$ tessel wifi -n test-network -p super-secret
> Connecting to network “test-network”...
> Failed to connect to “test-network” (ssid or password incorrect)
$ tessel wifi -n test-network -p secret
> Connecting to network “test-network”...
> Connected to network “test-network”
$ 

$ tessel wifi -n test-network -p secret -s WPA
> Connecting to network “test-network”...
> Connected to network “test-network”
$ 

$ tessel wifi -n test-network -t 1
> Connecting to network “test-network”...
> Failed to connect to “test-network” (timeout)
$

$ tessel wifi --list
> Currently connected to “test-network”
> Scanning for wifi connections...
>  technicallyWifi (67/75)
>  test-network (65/75) [connected]
>  Gaumenkitzel (33/75)
$

To do:

• tessel wifi
• tessel wifi --help
• -s flag
• -t flag
• --off flag
• check whether network/password authenticate and whether the Tessel connects
• Show connection status, IP address, signal strength, bitrate

[Frijol]

@johnnyman727 did you have further ideas for the -l command, re bitrate etc?

[johnnyman727]

According to the spec, there is no bitrate log for -l. I was mistaken (it's part of tessel wifi).

[Frijol]

I'm referring to your comment that tessel status -c is redundant with tessel wifi -l.
They are currently not redundant (tessel status -c shows a fair amount more information than tessel wifi -l), but it might make more sense to move that functionality over to tessel wifi -l. What do you think?

[johnnyman727]

Ah I understand now. I think we should leave tessel wifi -l and remove tesse status -c. I can't think of a time when I actually tried to go looking for the bitrate.

[nplus11]

We already agreed somewhere to remove tessel status -c. I think it was in the doc.

[johnnyman727]

Just adding a note for anyone that's looking that connecting to an open network doesn't work yet!

[johnnyman727]

Another note that a recently flashed image of OpenWRT doesn't by default have encryption set as psk and the current wifi credential setting logic doesn't set it either. I had to go in and manually add that. Once this feature is completed, this shouldn't be an issue.

[johnnyman727]

@kteza1 What's the best way to confirm that setting the WiFI credentials was successful with openWRT? We could parse ifconfig after some timeout but that seems hacky.

[tekjar]

@johnnyman727 How do you make sure if connection is successful using ifconfig? By checking for ip address on wlan0 interface? I've tried some uci commands but none them shows ip address on wlan interface on my raspberry pi running openwrt. Will check if there is any other way to get this other than using ifconfig

[tekjar]

@johnnyman727 Here is what I tried on my raspberry pi which is in client mode

Before connection

ubus call wireless.network status

Output:

{
    "radio0": {
        "up": true,
        "pending": false,
        "autostart": true,
        "disabled": false,
        "config": {
            "channel": "11",
            "hwmode": "11g",
            "path": "platform\/bcm2708_usb\/usb1\/1-1\/1-1.2\/1-1.2:1.0",
            "htmode": "HT20",
            "txpower": 20,
            "country": "00"
        },
        "interfaces": [

        ]
    }
}

After connecting it to my router

ubus call wireless.network status

Output:

{
    "radio0": {
        "up": true,
        "pending": false,
        "autostart": true,
        "disabled": false,
        "config": {
            "channel": "11",
            "hwmode": "11g",
            "path": "platform\/bcm2708_usb\/usb1\/1-1\/1-1.2\/1-1.2:1.0",
            "htmode": "HT20",
            "txpower": 20,
            "country": "00"
        },
        "interfaces": [
            {
                "section": "@wifi-iface[0]",
                "ifname": "wlan0",
                "config": {
                    "ssid": "OpenWrt",
                    "encryption": "psk",
                    "mode": "sta",
                    "bssid": "E8:94:F6:68:59:8E",
                    "key": "abc@12345",
                    "network": [
                        "wwan"
                    ]
                }
            }
        ]
    }
}

[johnnyman727]

Thanks @kteza1! So you're suggestion is to poll the ubus call wireless.network.status until it shows connected. Do you know if it's possible to tell if the password for a network is incorrect (rather than poor signal strength)?

[johnnyman727]

Also, @kteza1 do you know other security options folks might be interested in besides psk2?

[johnnyman727]

@Frijol there is no simply way to utilize nomnom's built in usage print out if no arguments/flags are provided.

What do you think about just printing:

ERR! No arguments provided. Type tessel wifi -h for usage information. 

if a user tries t2 wifi.

The other alternative is to do the same as t2 wifi -l.

[Frijol]

I'm confused. From the spec above, this is what tessel wifi is meant to do with no flags:

$ tessel wifi
> Connected to "technicallyWifi"
> IP Address: 192.168.128.149
> Signal Strength: 27/70
> Bitrate: 145mbps up / 24 mbps down

$ tessel wifi
> Not Connected (run 'tessel wifi -l' to see available networks)

[johnnyman727]

@Frijol Yes, you're correct. Not sure how I misread that!

[johnnyman727]

@MrNice is going to take a stab at this one!

[MrNice]

@Frijol #282 Implements "tessel wifi", but doesn't do any bitrate log analysis, only reports what iwinfo reports when invoked.

[Frijol]

the PR moved to #362

[Frijol]

Closing in favor of the three bite-sized issues linked above ^