Which stun server implement is suitable for frp xtcp?

[kkocdko]

Use stun.miwifi.com:3478 and 111.206.174.3:3478 works well. However:

frp-0.58.1 - debian-12-x86-64-kernel-6.1

# other config (frpc)
serverAddr = "111.111.111.111"
serverPort = 7000
natHoleStunServer = "111.111.111.111:3478" # use stun.miwifi.com:3478 and 111.206.174.3:3478 works fine

debian apt coturn (4.6.1-1) failed:

# coturn
turnserver -L 0.0.0.0 -p 3478 -v --no-auth --allow-loopback-peers --no-cli --no-dtls --no-tls
66: : session 000000000000000001: usage: realm=<>, username=<>, rp=1, rb=20, sp=1, sb=80
66: : session 000000000000000001: peer usage: realm=<>, username=<>, rp=0, rb=0, sp=0, sb=0
66: : session 000000000000000001: closed (2nd stage), user <> realm <> origin <>, local 0.0.0.0:3478, remote 222.222.222.222:35326, reason: allocation watchdog determined stale session state
77: : session 001000000000000001: usage: realm=<>, username=<>, rp=1, rb=20, sp=1, sb=80
77: : session 001000000000000001: peer usage: realm=<>, username=<>, rp=0, rb=0, sp=0, sb=0
77: : session 001000000000000001: closed (2nd stage), user <> realm <> origin <>, local 0.0.0.0:3478, remote 222.222.222.222:44711, reason: allocation watchdog determined stale session state

# frp
2024-07-08 06:15:53.473 [I] [visitor/visitor_manager.go:172] [56412290dbbec8b7] visitor added: [klc2_rdp_visitor klc_klc2_rdp_visitor klc_ssh_visitor klc3_ssh_visitor]
2024-07-08 06:15:55.839 [W] [visitor/xtcp.go:280] [56412290dbbec8b7] [klc_ssh_visitor] nathole prepare error: discover error: not enough addresses
2024-07-08 06:16:05.839 [W] [visitor/xtcp.go:280] [56412290dbbec8b7] [klc_ssh_visitor] nathole prepare error: discover error: not enough addresses
2024-07-08 06:16:15.795 [E] [visitor/xtcp.go:179] [56412290dbbec8b7] [klc_ssh_visitor] open tunnel error: open tunnel timeout

paullouisageneau/violet (0.5.0) failed:

# violet
2024-07-08 06:18:09 INFO    Got STUN binding from client 99.99.99.99:47800
2024-07-08 06:18:19 INFO    Got STUN binding from client 99.99.99.99:41618

# frp
2024-07-08 06:17:58.626 [W] [visitor/xtcp.go:280] [9c4d203bf39c6acb] [klc_ssh_visitor] nathole prepare error: discover error: not enough addresses
2024-07-08 06:18:08.624 [W] [visitor/xtcp.go:280] [9c4d203bf39c6acb] [klc_ssh_visitor] nathole prepare error: discover error: not enough addresses
2024-07-08 06:18:18.579 [E] [visitor/xtcp.go:179] [9c4d203bf39c6acb] [klc_ssh_visitor] open tunnel error: open tunnel timeout
2024-07-08 06:18:18.625 [W] [visitor/xtcp.go:280] [9c4d203bf39c6acb] [klc_ssh_visitor] nathole prepare error: discover error: not enough addresses

[kkocdko]

Is frp server + stun server on same ip not allowed?

The point I checked:

• Firewall (all port passed, use stunner test fine).
• NAT Type: 3 (both side).
• Other public stun server: default server and stun.miwifi.com:3478 and 111.206.174.3:3478 works well.

[fatedier]

I'm not sure. Most likely your stun server is not following the standard STUN protocol.

[kkocdko]

I will test more stun server implement, then post my test result here. After all done, I'll close this issue.