The gcp function (nodejs environment) is the eks cluster java container connected to aws through vpn, the protocol uses grpc, and the connection times out
Java application error log: HTTP/2 client preface string missing or corrupt. Hex dump for received bytes
Test status
- Functions tcp connection can be successful through vpn or public network
- Functions grpc connection through vpn does not work, and grpc can connect successfully through the public network
- It is possible to connect the gcp server tcp or grpc through vpn or public network
I have ruled out the problems below the TCP transport layer. Tools such as ping traceroute telnet can be connected, and the firewall also allows all 0.0.0.0/0 routing tables to be fine.
I think the problem should be located in the application layer GRPC of Function, because I also wrote a test case running on the GCP server and connecting to GRPC can be successful
But I don't know how to check further
Any geeks have any ideas?
