I was about to upload an app to iTunes connect, but the application loader has been stuck at the stage of \"Verifying assets with the iTunes Store\" and pending for almost a
This is a permanent issue at one of the places where I work from. And the issue is not in Provisioning at all in my case.
So, I tried to check what happens using Wireshark: I see correctly initiated SSL connection, data starts to be uploaded via UDP, but then "Retransmission" or "Spurious Retransmission" messages start happening and it all ends up either in "Destination unreachable (Port unreachable)" or connection gets reset by either side. Sometimes it happens after 2-3 seconds and sometimes in less than 1 second. Organizer tries again, but not always. Sometimes it just stops and waits for an unknown amount of time.
What I have tried:
[fail] Restarting computer or WiFi
[fail] waiting for several hours hoping the process will finish
[fail] fixing clock on WiFi router (automatic clock was turned off)
[sometimes helps] making several attempts in a row - this requires changing build number and re-archiving. Somewhat time-consuming.
[often helps] finding another WiFi or using mobile network
I will continue playing with those router's settings and will update my answer if I find something.