UDP will cause Blockchain failures - QUIC required.

[johnstudarus]

BasicBlockchainGo/network/network.go

Line 494 in 698f1e6

ln, err := pan.ListenUDP(context.Background(), local, nil)

BasicBlockchainGo/network/network.go

Lines 156 to 157 in 698f1e6

	address, err := pan.ResolveUDPAddr(addr)
	conn, err := pan.DialUDP(context.Background(), netaddr.IPPort{}, address, nil, nil)

You'll want to use QUIC instead of UDP. The blockchain project is dependent on TCP so using UDP across a real network (and not just on a single host) is going to cause the blockchain to fail. QUIC provides the same network functionality as TCP and is built into SCION.

You can see an example of using QUIC in the following sample code:
https://github.com/netsec-ethz/scion-apps/blob/master/ssh/client/ssh/ssh.go

Please replace your UDP code with QUIC.