Attempt to run the server reported an error.

[htqkeku-eftc]

2025/11/02 07:22:09 websocket: bad handshake
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x7a pc=0x867ad7]

goroutine 1 [running]:
github.com/cloudlink-delta/discovery-server/server.New({0x9dd676, 0x8})
/workspaces/discovery-server/server/server.go:122 +0x157
main.main()
/workspaces/discovery-server/main.go:18 +0x25
exit status 2

[MikeDev101]

/workspaces/discovery-server/server/server.go:122 +0x157

Looks like you haven't updated your dependencies. This references a line in the Duplex lib IsDiscovery.

Use go clean -modcache then go mod tidy and it should trigger a dependency update.

Also double check if the go.mod isn't using the replace directive. I believe I left it so...

[htqkeku-eftc]

The problem still occurs:
(base) (3.13.7) root@ZAODX1906392831:/lsk/discovery-server# ls
LICENSE README.md go.mod go.sum main.go microkey server
(base) (3.13.7) root@ZAODX1906392831:/lsk/discovery-server# go build .
go: downloading go1.25.2 (linux/amd64)
go: downloading github.com/google/uuid v1.3.1
server/server.go:13:2: github.com/cloudlink-delta/duplex@v0.0.0-00010101000000-000000000000: replacement directory ../duplex does not exist
(base) (3.13.7) root@ZAODX1906392831:/lsk/discovery-server# cd ..
(base) (3.13.7) root@ZAODX1906392831:/lsk# git clone https://github.com/cloudlink-delta/duplex
Cloning into 'duplex'...
remote: Enumerating objects: 48, done.
remote: Counting objects: 100% (48/48), done.
remote: Compressing objects: 100% (39/39), done.
remote: Total 48 (delta 26), reused 26 (delta 9), pack-reused 0 (from 0)
Receiving objects: 100% (48/48), 45.90 KiB | 470.00 KiB/s, done.
Resolving deltas: 100% (26/26), done.
(base) (3.13.7) root@ZAODX1906392831:/lsk# cd discovery-ser
bash: cd: discovery-ser: No such file or directory
(base) (3.13.7) root@ZAODX1906392831:/lsk# cd discovery-server
(base) (3.13.7) root@ZAODX1906392831:/lsk/discovery-server# go build .
go: downloading github.com/pion/webrtc/v3 v3.3.6
go: downloading github.com/gorilla/websocket v1.5.0
go: downloading github.com/sirupsen/logrus v1.9.0
go: downloading golang.org/x/sys v0.18.0
go: downloading github.com/pion/datachannel v1.5.8
go: downloading github.com/pion/ice/v2 v2.3.38
go: downloading github.com/pion/interceptor v0.1.29
go: downloading github.com/pion/logging v0.2.2
go: downloading github.com/pion/rtcp v1.2.14
go: downloading github.com/pion/rtp v1.8.7
go: downloading github.com/pion/sctp v1.8.19
go: downloading github.com/pion/sdp/v3 v3.0.9
go: downloading golang.org/x/net v0.22.0
go: downloading golang.org/x/crypto v0.21.0
go: downloading github.com/stretchr/testify v1.9.0
go: downloading github.com/wlynxg/anet v0.0.3
(base) (3.13.7) root@ZAODX1906392831:/lsk/discovery-server# go clean -modcache
(base) (3.13.7) root@ZAODX1906392831:/lsk/discovery-server# go mod tidy
go: downloading go1.25.2 (linux/amd64)
go: downloading github.com/google/uuid v1.3.1
go: downloading github.com/goccy/go-json v0.10.5
go: downloading github.com/muka/peerjs-go v0.0.0-20240401061429-5b28944b9e4f
go: downloading github.com/pion/webrtc/v3 v3.3.6
go: downloading github.com/pion/dtls/v2 v2.2.12
go: downloading github.com/pion/datachannel v1.5.8
go: downloading github.com/pion/ice/v2 v2.3.38
go: downloading github.com/pion/interceptor v0.1.29
go: downloading github.com/pion/logging v0.2.2
go: downloading github.com/pion/randutil v0.1.0
go: downloading github.com/pion/rtcp v1.2.14
go: downloading github.com/pion/rtp v1.8.7
go: downloading github.com/pion/sctp v1.8.19
go: downloading github.com/pion/sdp/v3 v3.0.9
go: downloading github.com/pion/srtp/v2 v2.0.20
go: downloading github.com/pion/stun v0.6.1
go: downloading github.com/pion/transport/v2 v2.2.10
go: downloading golang.org/x/net v0.22.0
go: downloading github.com/stretchr/testify v1.9.0
go: downloading github.com/pion/mdns v0.0.12
go: downloading github.com/pion/turn/v2 v2.1.6
go: downloading golang.org/x/crypto v0.21.0
go: downloading github.com/gorilla/websocket v1.5.0
go: downloading github.com/sirupsen/logrus v1.9.0
go: downloading github.com/davecgh/go-spew v1.1.1
go: downloading github.com/pmezard/go-difflib v1.0.0
go: downloading gopkg.in/yaml.v3 v3.0.1
go: downloading github.com/wlynxg/anet v0.0.3
go: downloading golang.org/x/sys v0.18.0
go: downloading github.com/chuckpreslar/emission v0.0.0-20170206194824-a7ddd980baf9
go: downloading github.com/pion/transport/v3 v3.0.2
go: downloading github.com/gorilla/mux v1.8.0
go: downloading github.com/rs/cors v1.8.2
go: downloading gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c
go: downloading github.com/kr/pretty v0.3.0
go: downloading github.com/pion/transport v0.13.1
go: downloading github.com/rogpeppe/go-internal v1.6.1
go: downloading github.com/kr/text v0.2.0
(base) (3.13.7) root@ZAODX1906392831:/lsk/discovery-server# go run .
2025/11/08 03:52:45 Opening peer...
2025/11/08 03:52:46 websocket: bad handshake
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x7a pc=0x867a97]

goroutine 1 [running]:
github.com/cloudlink-delta/discovery-server/server.New({0x9dd676, 0x8})
/lsk/discovery-server/server/server.go:122 +0x157
main.main()
/lsk/discovery-server/main.go:18 +0x25
exit status 2
(base) (3.13.7) root@ZAODX1906392831:/lsk/discovery-server#

[MikeDev101]

server/server.go:13:2: github.com/cloudlink-delta/duplex@v0.0.0-00010101000000-000000000000: replacement directory ../duplex does not exist

I'd suggest you modify the go.mod file to remove that replace directive (the section should look something like this)

replace github.com/cloudlink-delta/duplex => ../duplex

require (
	github.com/cloudlink-delta/duplex v0.0.0-00010101000000-000000000000
	github.com/goccy/go-json v0.10.5
)

So that you needn't manually add the library. go mod tidy / go build will collect it automatically.

Also,

websocket: bad handshake

Indicates you might've gotten a 403 or a 500 error from the signaling server (did you potentially connect during a maintenance period? Cloudflare outage?) Try it again, let me know what happens.

Might I ask what general region you're in? (i.e. USA)? I do have some DNS rules in place to block certain regions for safety purposes.

[htqkeku-eftc]

My cloud server cannot connect to the signaling server, so is there any way to make the discovery-server connect to the local PeerJS server (http://localhost:9000) to start the discovery-server and also allow the discovery client to connect properly?