[Make-wifi-fast] wavedroplet

[Simon Barber]

What was it captured on? It has only been tested with captures from a MacBook (BCM chipset) and from QCA linux devices. It requires linear increasing hardware timestamps (there are some bugs in the capture hardware for both BCM and QCA and sometimes the hardware timestamp has errors). If it’s a QCA capture the timestamp marks the end of the frame, not the start of the data field, there is a checkbox in the preferences to account for that.

Simon


> On Apr 28, 2020, at 1:41 PM, Tim Higgins <tim at timhiggins.com> wrote:
> 
> I'm on WS 3.2.1 and checked the "Enable Wireless Timeline (experimental) checkbox under Preferernces > Protocols > 802.11 Radio.
> I don't see the timeline.
> 
> On 4/28/2020 2:33 PM, Simon Barber wrote:
>> Has everyone seen the wifi visualization that I added to Wireshark? It's experimental and has to be turned on in the 802.11 preferences. 
>> 
>> https://meraki.cisco.com/blog/2019/02/wireshark-where-did-the-time-go/ <https://meraki.cisco.com/blog/2019/02/wireshark-where-did-the-time-go/> 
>> 
>> Simon 
>> 
>> On April 28, 2020 11:18:15 AM Avery Pennarun <apenwarr at gmail.com> <mailto:apenwarr at gmail.com> wrote: 
>> 
>>> I'm afraid if you have to ask that, this program might not be for you :) 
>>> 
>>> There's a script called './start' in the toplevel directory. It 
>>> requires you to have the appengine SDK installed (unfortunately). In 
>>> retrospect, using appengine for this was a bad idea, but we all make 
>>> mistakes in our youth. But anyway, you can download the appengine SDK 
>>> and run a local copy for free, so you don't need actual appengine. 
>>> 
>>> On Tue, Apr 28, 2020 at 12:40 PM Tim Higgins <tim at timhiggins.com> <mailto:tim at timhiggins.com> wrote: 
>>>> 
>>>> 
>>>> 
>>>> On 4/28/2020 12:30 PM, Avery Pennarun wrote: 
>>>> 
>>>> On Tue, Apr 28, 2020 at 12:09 PM Dave Taht <dave.taht at gmail.com> <mailto:dave.taht at gmail.com> wrote: 
>>>> 
>>>> On Tue, Apr 28, 2020 at 8:59 AM Tim Higgins <tim at timhiggins.com> <mailto:tim at timhiggins.com> wrote: 
>>>> 
>>>> So how do you use it and what's the output look like? 
>>>> 
>>>> I downloaded it and opened the index.html file in a browser and 
>>>> it doesn't appear to work. 
>>>> 
>>>> It's been years since I had to dig this deep into the wifi stack. 
>>>> Avery's group produced a lot of cool tools while 
>>>> gfiber was in growth mode, he's since moved onto doing cool things 
>>>> with wireguard ( https://tailscale.com/ <https://tailscale.com/> )and I doubt he's maintaining 
>>>> this anymore. We had lots and lots of other very adhoc tools lying 
>>>> around... parsing wifi caps is a !@#!! 
>>>> 
>>>> Sorry about that, wavedroplet never quite got to something like 
>>>> release quality. It requires more work. 
>>>> 
>>>> However, it shouldn't just totally fail either :)  Perhaps there's an 
>>>> error visible in the javascript console, or python is emitting a 
>>>> problem somewhere (note that it's a python2 program, not python3). 
>>>> 
>>>> Actually, now that I think of it, I don't know why there's an 
>>>> index.html at all. You definitely need to run the python backend and 
>>>> connect to that, which probably renders the index.html as a template. 
>>>> 
>>>> Have fun, 
>>>> 
>>>> Avery 
>>>> 
>>>> Thanks for the reply. And how do I run the python backend? 
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>> 
>> 
>> 
> 

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