Testing go-libp2p holepunching with minimal example and some more info for veryifing that holepunching can work.
A node run by this is able to be holepunched by other nodes (that I do not control). However, you can not run a node with this code to holepunch someone else (so the logic for initiating the holepunch in this code seems to be wrong, but a node run by this code is able to get holepunched by other tools). Also when using vole with another node the node you target will print holepunch failures, but why are other nodes able to holepunch? What am I doing wrong?
The code works perfectly when both nodes are in same LAN. But when one node is in a different network the nodes find each other and connect to each other but they never are able to receive each others gossip sub messages. What am I doing wrong? It probably is related to the holepunch error that is logged when you vole ping one of the nodes..
The code works perfectly when both nodes are in same LAN. But when one node is in a different network the nodes find each other and connect to each other but sending chat messages will fail due to "failed to open stream: context deadline exceeded". So is this also a consequence of failed holepunching? Edit: After both nodes are connected for like 10 minutes, chat messages start to come through (at least in one direction), so maybe the solution to everything is just 'wait longer'. Edit 2: And in my test after around 15 min the messages come through both directions (at least most of them, occassionally it will still say 'failed to connect'). And after around 27 min messages are sent and received reliably (works most of the time). But keep in mind: The direct connection upgrade still has not happened, whenever it is tried it fails with "failed to negotiate protocol: protocols not supported: [/libp2p/dcutr]" even though the nodes are configured to support holepunching..