On Wed, Apr 10, 2024 at 5:18 PM mo <[email protected]> wrote: > How do I gather more data? >
Get between your phone and whatsapp servers and run tcpdump -s0 -w /tmp/capture.pcap -i $LANIFACE ether host $PHONEMACADDR, where $LANIFACE is your router's interface closer to the phone and $PHONEMACADDR is the MAC address that the phone is using on your network. Note that modern phone operating systems randomize the MAC address they use on each wifi network for the sake of privacy. You'll have to figure out what it is using either by looking in the phone or by looking at the DHCP lease your router provided. Then, let it run for as long as it takes to send your whatsapp message, but minimize other traffic on the phone, because the tcpdump will need to copy/store everything to and from the device. Then copy the /tmp/capture.pcap to a real computer and run wireshark on it, e.g.: wireshark capture.pcap And then stare at wireshare until it makes sense. The payloads of the messages will be encrypted, but the envelopes/headers and their timing should provide information. That's how I would do approach the problem. > > On Wed, Apr 10, 2024, 16:09 Russell Senior <[email protected]> > wrote: > > > It could be some weird DNS or maybe even ipv6 related timeout problem. > Wild > > added guessing. More data means less guessing. > > > > -- > > Russell Senior > > [email protected] > > > > On Wed, Apr 10, 2024, 14:13 Tomas Kuchta <[email protected]> > > wrote: > > > > > On Wed, Apr 10, 2024, 06:02 Russell Senior <[email protected]> > > > wrote: > > > > > > > If you manage your own gateway, using OpenWrt for example, you could > > put > > > > your own diagnostic tools (like tcpdump) on that gateway and, for > > > example, > > > > capture the transactions from your phone to whatsapp servers. If you > > > don't > > > > manage your own gateway, then you might be stuck asking > > > CenturyLink/Quantum > > > > what's going on. > > > > > > > > I'm not a whatsapp user, so I don't have any personal insight. > > > > > > > > -- > > > > Russell Senior > > > > [email protected] > > > > > > > > On Tue, Apr 9, 2024 at 10:43 PM mo <[email protected]> wrote: > > > > > > > > > Hi. I've Quantum fiber. It has latency issues with WhatsApp. Any > idea > > > > why & > > > > > how to resolve this? > > > > > > > > > > I've no other issues with them. Using the WiFi. All other sites > apps > > > etc > > > > > have no noticeable latency. WhatsApp takes minutes to send a > message > > & > > > > > receives messages minutes after someone sends. However if I turn of > > > WiFi > > > > & > > > > > switch to cellular data (TMO) it immediately sends & receives the > > > > > backlogged messages. The latency can be up to 10 min sometimes. > > > > > > > > > > Thoughts? > > > > > > > > > > > > > > > Minutes difference is unlikely to be network related. Unless, of > course, > > a > > > three letter agency? > > > > > > It may be that the cell phone app update events are more timely when it > > can > > > see the celular network than with WiFi. > > > > > > Just my 2¢, > > > T > > > > > > > > > > > > >
