The most simple way is to have Windows 10 notebook or PC with Wi-Fi capabilities.
1 - Download Wireshark
Download latest version of Wireshark (https://2.na.dl.wireshark.org/ - choose
win32 or win64) and install.

2 - Create a mobile hotspot
Open the Settings app. Navigate to Network & Internet>Mobile Hotspot and switch the toggle to on (see here how to create hotspot in other versions of Windows-
https://www.ghacks.net/2020/03/02/h...t-in-windows-7-or-above-without-any-software/)

3. Connect your PS Vita to the newly formed mobile hotspot

4. Open Wireshark if you haven't already

5. In Wireshark, find which connection is the mobile hotspot (you can check this by disabling/enabling mobile hotspot and see which one disappears/appears)

6. Double click on the mobile hotspot (now the packets are being captured and you should see several logs already happening)

7. Resume your Vita operations as usual (playing games, sending invites, etc.)

8. If possible, write down what you did when or at least in order in which it happened (you can then rename the capture this way, e.g. - AcceptingInvite,1MatchofVirtuaTennis,...)

9. Once you are done, just click on the red stop button. And choose File>Save As

10. Upload the files to a file sharing site (Google Drive, Mega, etc)

11. share it to archive.org, lol don't keep it to your self.

 

[Hepklep]

The PS Vita, like all modern Playstation units is using encryption for online communication. This will be just a log of lots of encrypted packets and will ultimately be useless.

 

[Denis1995]

The PS Vita, like all modern Playstation units is using encryption for online communication. This will be just a log of lots of encrypted packets and will ultimately be useless.

i mean yeah, but maybe someone will decrypt them in the future, so its good to capture them from now before everything shuts down

 

[bobmcjr]

i mean yeah, but maybe someone will decrypt them in the future, so its good to capture them from now before everything shuts down

Encrypted packet captures like this are useless because SSL/TLS uses unique session keys. You won't be decrypting them. Someone would need to write a plugin for the Vita to intercept packets at the correct stage or least exfil the session keys when they're decided for encrypted packet captures to be of any use.

Given someone wrote a TLS 1.2 plugin, it's evidently possible to mess with encrypted traffic, but as it stands, I don't believe anyone has written a packet capture-type plugin.