Fix a bug of udpSession of dialer and add echo test

Signed-off-by: bill fort <[email protected]>

go.mod

@@ -4,7 +4,6 @@ go 1.20
 
 require (
 	github.com/imdario/mergo v0.3.15
-	github.com/nknorg/eth-resolver-go v0.0.0-20230404061427-d0bd773f899f
 	github.com/nknorg/ncp-go v1.0.6-0.20230228002512-f4cd1740bebd
 	github.com/nknorg/nkn-sdk-go v1.4.6-0.20230404044330-ad192f36d07e
 	github.com/nknorg/nkn/v2 v2.2.0
@@ -17,50 +16,25 @@ require (
 )
 
 require (
-	github.com/btcsuite/btcd/btcec/v2 v2.2.0 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
-	github.com/deckarep/golang-set v1.8.0 // indirect
-	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.0.1 // indirect
-	github.com/ethereum/go-ethereum v1.10.22 // indirect
-	github.com/go-ole/go-ole v1.2.6 // indirect
-	github.com/go-stack/stack v1.8.1 // indirect
 	github.com/golang/protobuf v1.5.3 // indirect
-	github.com/google/uuid v1.3.0 // indirect
 	github.com/gorilla/websocket v1.5.0 // indirect
 	github.com/hashicorp/errwrap v1.1.0 // indirect
 	github.com/hashicorp/go-multierror v1.1.1 // indirect
-	github.com/ipfs/go-cid v0.4.0 // indirect
 	github.com/itchyny/base58-go v0.2.1 // indirect
 	github.com/jpillora/backoff v1.0.0 // indirect
-	github.com/klauspost/cpuid/v2 v2.2.4 // indirect
-	github.com/minio/sha256-simd v1.0.0 // indirect
-	github.com/mr-tron/base58 v1.2.0 // indirect
-	github.com/multiformats/go-base32 v0.1.0 // indirect
-	github.com/multiformats/go-base36 v0.2.0 // indirect
-	github.com/multiformats/go-multibase v0.2.0 // indirect
-	github.com/multiformats/go-multihash v0.2.1 // indirect
-	github.com/multiformats/go-varint v0.0.7 // indirect
+	github.com/kr/text v0.2.0 // indirect
 	github.com/nknorg/encrypted-stream v1.0.2-0.20230320101720-9891f770de86 // indirect
 	github.com/oschwald/geoip2-golang v1.4.0 // indirect
 	github.com/oschwald/maxminddb-golang v1.6.0 // indirect
 	github.com/pbnjay/memory v0.0.0-20210728143218-7b4eea64cf58 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/rdegges/go-ipify v0.0.0-20150526035502-2d94a6a86c40 // indirect
-	github.com/rjeczalik/notify v0.9.3 // indirect
-	github.com/shirou/gopsutil v3.21.11+incompatible // indirect
-	github.com/spaolacci/murmur3 v1.1.0 // indirect
-	github.com/tklauser/go-sysconf v0.3.11 // indirect
-	github.com/tklauser/numcpus v0.6.0 // indirect
-	github.com/wealdtech/go-ens/v3 v3.5.4 // indirect
-	github.com/wealdtech/go-multicodec v1.4.0 // indirect
 	github.com/xtaci/smux v2.0.1+incompatible // indirect
-	github.com/yusufpapurcu/wmi v1.2.2 // indirect
 	golang.org/x/mobile v0.0.0-20230301163155-e0f57694e12c // indirect
-	golang.org/x/net v0.8.0 // indirect
 	golang.org/x/sys v0.6.0 // indirect
-	golang.org/x/text v0.8.0 // indirect
-	gopkg.in/natefinch/npipe.v2 v2.0.0-20160621034901-c1b8fa8bdcce // indirect
+	golang.org/x/xerrors v0.0.0-20220517211312-f3a8303e98df // indirect
+	gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
-	lukechampine.com/blake3 v1.1.7 // indirect
 )