Bug in example mdns chat

[karthik340]

trying to run this example mdns chat app
https://github.com/libp2p/go-libp2p/tree/master/examples/chat-with-mdns

Reproduce :

go build -o chat
action : ./chat
output :
[*] Listening on: 0.0.0.0 with port: 4001

[*] Your Multiaddress Is: /ip4/0.0.0.0/tcp/4001/p2p/QmXeuxABRy8LXk5TTic23xGjuLmMrZ2h9g2g1aERoQA4tH
Found peer: QmXeuxABRy8LXk5TTic23xGjuLmMrZ2h9g2g1aERoQA4tH , connecting
Connection failed: dial to self attempted
Stream open failed dial to self attempted

what is the issue ?

Its receiving it self as a peer and trying to connect to itself and also opening stream to itself .
this way the program is reaching end of code.
so there is no way to chat with others.

Version Information

github/p2p/mdns-chat
cloud.google.com/go v0.65.0
cloud.google.com/go/bigquery v1.8.0
cloud.google.com/go/datastore v1.1.0
cloud.google.com/go/pubsub v1.3.1
cloud.google.com/go/storage v1.10.0
dmitri.shuralyov.com/app/changes v0.0.0-20180602232624-0a106ad413e3
dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9
dmitri.shuralyov.com/html/belt v0.0.0-20180602232347-f7d459c86be0
dmitri.shuralyov.com/service/change v0.0.0-20181023043359-a85b471d5412
dmitri.shuralyov.com/state v0.0.0-20180228185332-28bcc343414c
git.apache.org/thrift.git v0.0.0-20180902110319-2566ecd5d999
github.com/AndreasBriese/bbloom v0.0.0-20190825152654-46b345b51c96
github.com/BurntSushi/toml v0.3.1
github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802
github.com/aead/siphash v1.0.1
github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751
github.com/alecthomas/units v0.0.0-20190924025748-f65c72e2690d
github.com/anmitsu/go-shlex v0.0.0-20161002113705-648efa622239
github.com/benbjohnson/clock v1.3.0
github.com/beorn7/perks v1.0.1
github.com/bradfitz/go-smtpd v0.0.0-20170404230938-deb6d6237625
github.com/btcsuite/btcd v0.22.1
github.com/btcsuite/btcd/btcec/v2 v2.2.0
github.com/btcsuite/btcd/chaincfg/chainhash v1.0.1
github.com/btcsuite/btclog v0.0.0-20170628155309-84c8d2346e9f
github.com/btcsuite/btcutil v0.0.0-20190425235716-9e5f4b9a998d
github.com/btcsuite/go-socks v0.0.0-20170105172521-4720035b7bfd
github.com/btcsuite/goleveldb v0.0.0-20160330041536-7834afc9e8cd
github.com/btcsuite/snappy-go v0.0.0-20151229074030-0bdef8d06723
github.com/btcsuite/websocket v0.0.0-20150119174127-31079b680792
github.com/btcsuite/winsvc v1.0.0
github.com/buger/jsonparser v0.0.0-20181115193947-bf1c66bbce23
github.com/census-instrumentation/opencensus-proto v0.2.1
github.com/cespare/xxhash v1.1.0
github.com/cespare/xxhash/v2 v2.1.2
github.com/cheekybits/genny v1.0.0
github.com/chzyer/logex v1.1.10
github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e
github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1
github.com/cilium/ebpf v0.4.0
github.com/client9/misspell v0.3.4
github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f
github.com/containerd/cgroups v1.0.4
github.com/coreos/go-semver v0.3.0
github.com/coreos/go-systemd v0.0.0-20181012123002-c6f51f82210d
github.com/coreos/go-systemd/v22 v22.3.2
github.com/cpuguy83/go-md2man/v2 v2.0.0
github.com/creack/pty v1.1.9
github.com/davecgh/go-spew v1.1.1
github.com/davidlazar/go-crypto v0.0.0-20200604182044-b73af7476f6c
github.com/decred/dcrd/crypto/blake256 v1.0.0
github.com/decred/dcrd/dcrec/secp256k1/v4 v4.0.1
github.com/dgraph-io/badger v1.6.2
github.com/dgraph-io/ristretto v0.0.2
github.com/docker/go-units v0.4.0
github.com/dustin/go-humanize v1.0.0
github.com/elastic/gosigar v0.14.2
github.com/envoyproxy/go-control-plane v0.9.4
github.com/envoyproxy/protoc-gen-validate v0.1.0
github.com/flynn/go-shlex v0.0.0-20150515145356-3f9db97f8568
github.com/flynn/noise v1.0.0
github.com/francoispqt/gojay v1.2.13
github.com/fsnotify/fsnotify v1.5.4
github.com/ghodss/yaml v1.0.0
github.com/gliderlabs/ssh v0.1.1
github.com/go-errors/errors v1.0.1
github.com/go-gl/glfw v0.0.0-20190409004039-e6da0acd62b1
github.com/go-gl/glfw/v3.3/glfw v0.0.0-20200222043503-6f7a984d4dc4
github.com/go-kit/kit v0.9.0
github.com/go-kit/log v0.2.0
github.com/go-logfmt/logfmt v0.5.1
github.com/go-stack/stack v1.8.0
github.com/go-task/slim-sprig v0.0.0-20210107165309-348f09dbbbc0
github.com/godbus/dbus/v5 v5.1.0
github.com/gogo/protobuf v1.3.2
github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b
github.com/golang/groupcache v0.0.0-20200121045136-8c9f03a8e57e
github.com/golang/lint v0.0.0-20180702182130-06c8688daad7
github.com/golang/mock v1.6.0
github.com/golang/protobuf v1.5.2
github.com/golang/snappy v0.0.0-20180518054509-2e65f85255db
github.com/google/btree v1.0.0
github.com/google/go-cmp v0.5.7
github.com/google/go-github v17.0.0+incompatible
github.com/google/go-querystring v1.0.0
github.com/google/gofuzz v1.0.0
github.com/google/gopacket v1.1.19
github.com/google/martian v2.1.0+incompatible
github.com/google/martian/v3 v3.0.0
github.com/google/pprof v0.0.0-20200708004538-1a94d8640e99
github.com/google/renameio v0.1.0
github.com/google/uuid v1.3.0
github.com/googleapis/gax-go v2.0.0+incompatible
github.com/googleapis/gax-go/v2 v2.0.5
github.com/gopherjs/gopherjs v0.0.0-20181017120253-0766667cb4d1
github.com/gorilla/websocket v1.5.0
github.com/gregjones/httpcache v0.0.0-20180305231024-9cad4c3443a7
github.com/grpc-ecosystem/grpc-gateway v1.5.0
github.com/gxed/hashland/keccakpg v0.0.1
github.com/gxed/hashland/murmur3 v0.0.1
github.com/hashicorp/golang-lru v0.5.4
github.com/hpcloud/tail v1.0.0
github.com/huin/goupnp v1.0.3
github.com/huin/goutil v0.0.0-20170803182201-1ca381bf3150
github.com/ianlancetaylor/demangle v0.0.0-20181102032728-5e5cf60278f6
github.com/ipfs/go-cid v0.2.0
github.com/ipfs/go-datastore v0.5.1
github.com/ipfs/go-detect-race v0.0.1
github.com/ipfs/go-ds-badger v0.3.0
github.com/ipfs/go-ds-leveldb v0.5.0
github.com/ipfs/go-ipfs-util v0.0.2
github.com/ipfs/go-log/v2 v2.5.1
github.com/jackpal/go-nat-pmp v1.0.2
github.com/jbenet/go-cienv v0.1.0
github.com/jbenet/go-temp-err-catcher v0.1.0
github.com/jbenet/goprocess v0.1.4
github.com/jellevandenhooff/dkim v0.0.0-20150330215556-f50fe3d243e1
github.com/jessevdk/go-flags v1.4.0
github.com/jpillora/backoff v1.0.0
github.com/jrick/logrotate v1.0.0
github.com/json-iterator/go v1.1.12
github.com/jstemmer/go-junit-report v0.9.1
github.com/julienschmidt/httprouter v1.3.0
github.com/kami-zh/go-capturer v0.0.0-20171211120116-e492ea43421d
github.com/kisielk/errcheck v1.5.0
github.com/kisielk/gotool v1.0.0
github.com/kkdai/bstream v0.0.0-20161212061736-f391b8402d23
github.com/klauspost/compress v1.15.4
github.com/klauspost/cpuid/v2 v2.0.14
github.com/konsorten/go-windows-terminal-sequences v1.0.3
github.com/koron/go-ssdp v0.0.3
github.com/kr/logfmt v0.0.0-20140226030751-b84e30acd515
github.com/kr/pretty v0.3.0
github.com/kr/pty v1.1.3
github.com/kr/text v0.2.0
github.com/libp2p/go-buffer-pool v0.1.0
github.com/libp2p/go-cidranger v1.1.0
github.com/libp2p/go-eventbus v0.2.1
github.com/libp2p/go-flow-metrics v0.0.3
github.com/libp2p/go-libp2p v0.21.0
github.com/libp2p/go-libp2p-asn-util v0.2.0
github.com/libp2p/go-libp2p-core v0.19.1
github.com/libp2p/go-libp2p-peerstore v0.7.1
github.com/libp2p/go-libp2p-resource-manager v0.5.1
github.com/libp2p/go-libp2p-testing v0.11.0
github.com/libp2p/go-mplex v0.7.0
github.com/libp2p/go-msgio v0.2.0
github.com/libp2p/go-nat v0.1.0
github.com/libp2p/go-netroute v0.2.0
github.com/libp2p/go-openssl v0.0.7
github.com/libp2p/go-reuseport v0.2.0
github.com/libp2p/go-sockaddr v0.0.2
github.com/libp2p/go-yamux/v3 v3.1.2
github.com/libp2p/zeroconf/v2 v2.1.1
github.com/lucas-clemente/quic-go v0.28.0
github.com/lunixbochs/vtclean v1.0.0
github.com/mailru/easyjson v0.0.0-20190312143242-1de009706dbe
github.com/marten-seemann/qpack v0.2.1
github.com/marten-seemann/qtls-go1-16 v0.1.5
github.com/marten-seemann/qtls-go1-17 v0.1.2
github.com/marten-seemann/qtls-go1-18 v0.1.2
github.com/marten-seemann/qtls-go1-19 v0.1.0-beta.1
github.com/marten-seemann/tcp v0.0.0-20210406111302-dfbc87cc63fd
github.com/mattn/go-colorable v0.0.9
github.com/mattn/go-isatty v0.0.14
github.com/matttproud/golang_protobuf_extensions v1.0.1
github.com/mgutz/ansi v0.0.0-20170206155736-9520e82c474b
github.com/microcosm-cc/bluemonday v1.0.1
github.com/miekg/dns v1.1.50
github.com/mikioh/tcp v0.0.0-20190314235350-803a9b46060c
github.com/mikioh/tcpinfo v0.0.0-20190314235526-30a79bb1804b
github.com/mikioh/tcpopt v0.0.0-20190314235656-172688c1accc
github.com/minio/blake2b-simd v0.0.0-20160723061019-3f5f724cb5b1
github.com/minio/sha256-simd v1.0.0
github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd
github.com/modern-go/reflect2 v1.0.2
github.com/mr-tron/base58 v1.2.0
github.com/multiformats/go-base32 v0.0.4
github.com/multiformats/go-base36 v0.1.0
github.com/multiformats/go-multiaddr v0.6.0
github.com/multiformats/go-multiaddr-dns v0.3.1
github.com/multiformats/go-multiaddr-fmt v0.1.0
github.com/multiformats/go-multibase v0.1.1
github.com/multiformats/go-multicodec v0.5.0
github.com/multiformats/go-multihash v0.2.0
github.com/multiformats/go-multistream v0.3.3
github.com/multiformats/go-varint v0.0.6
github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f
github.com/neelance/astrewrite v0.0.0-20160511093645-99348263ae86
github.com/neelance/sourcemap v0.0.0-20151028013722-8c68805598ab
github.com/nxadm/tail v1.4.8
github.com/onsi/ginkgo v1.16.5
github.com/onsi/gomega v1.13.0
github.com/opencontainers/runtime-spec v1.0.2
github.com/openzipkin/zipkin-go v0.1.1
github.com/pbnjay/memory v0.0.0-20210728143218-7b4eea64cf58
github.com/pkg/errors v0.9.1
github.com/pmezard/go-difflib v1.0.0
github.com/prometheus/client_golang v1.12.2
github.com/prometheus/client_model v0.2.0
github.com/prometheus/common v0.35.0
github.com/prometheus/procfs v0.7.3
github.com/raulk/go-watchdog v1.3.0
github.com/rogpeppe/go-internal v1.6.1
github.com/russross/blackfriday v1.5.2
github.com/russross/blackfriday/v2 v2.0.1
github.com/sergi/go-diff v1.0.0
github.com/shurcooL/component v0.0.0-20170202220835-f88ec8f54cc4
github.com/shurcooL/events v0.0.0-20181021180414-410e4ca65f48
github.com/shurcooL/github_flavored_markdown v0.0.0-20181002035957-2122de532470
github.com/shurcooL/go v0.0.0-20180423040247-9e1955d9fb6e
github.com/shurcooL/go-goon v0.0.0-20170922171312-37c2f522c041
github.com/shurcooL/gofontwoff v0.0.0-20180329035133-29b52fc0a18d
github.com/shurcooL/gopherjslib v0.0.0-20160914041154-feb6d3990c2c
github.com/shurcooL/highlight_diff v0.0.0-20170515013008-09bb4053de1b
github.com/shurcooL/highlight_go v0.0.0-20181028180052-98c3abbbae20
github.com/shurcooL/home v0.0.0-20181020052607-80b7ffcb30f9
github.com/shurcooL/htmlg v0.0.0-20170918183704-d01228ac9e50
github.com/shurcooL/httperror v0.0.0-20170206035902-86b7830d14cc
github.com/shurcooL/httpfs v0.0.0-20171119174359-809beceb2371
github.com/shurcooL/httpgzip v0.0.0-20180522190206-b1c53ac65af9
github.com/shurcooL/issues v0.0.0-20181008053335-6292fdc1e191
github.com/shurcooL/issuesapp v0.0.0-20180602232740-048589ce2241
github.com/shurcooL/notifications v0.0.0-20181007000457-627ab5aea122
github.com/shurcooL/octicon v0.0.0-20181028054416-fa4f57f9efb2
github.com/shurcooL/reactions v0.0.0-20181006231557-f2e0b4ca5b82
github.com/shurcooL/sanitized_anchor_name v1.0.0
github.com/shurcooL/users v0.0.0-20180125191416-49c67e49c537
github.com/shurcooL/webdavfs v0.0.0-20170829043945-18c3829fa133
github.com/sirupsen/logrus v1.8.1
github.com/smola/gocompat v0.2.0
github.com/sourcegraph/annotate v0.0.0-20160123013949-f4cad6c6324d
github.com/sourcegraph/syntaxhighlight v0.0.0-20170531221838-bd320f5d308e
github.com/spacemonkeygo/openssl v0.0.0-20181017203307-c2dcc5cca94a
github.com/spacemonkeygo/spacelog v0.0.0-20180420211403-2296661a0572
github.com/spaolacci/murmur3 v1.1.0
github.com/src-d/envconfig v1.0.0
github.com/stretchr/objx v0.1.1
github.com/stretchr/testify v1.8.0
github.com/syndtr/goleveldb v1.0.0
github.com/tarm/serial v0.0.0-20180830185346-98f6abe2eb07
github.com/urfave/cli v1.22.2
github.com/viant/assertly v0.4.8
github.com/viant/toolbox v0.24.0
github.com/x-cray/logrus-prefixed-formatter v0.5.2
github.com/yuin/goldmark v1.4.1
go.opencensus.io v0.23.0
go.uber.org/atomic v1.9.0
go.uber.org/goleak v1.1.12
go.uber.org/multierr v1.8.0
go.uber.org/zap v1.21.0
go4.org v0.0.0-20180809161055-417644f6feb5
golang.org/x/build v0.0.0-20190111050920-041ab4dc3f9d
golang.org/x/crypto v0.0.0-20220525230936-793ad666bf5e
golang.org/x/exp v0.0.0-20220426173459-3bcf042a4bf5
golang.org/x/image v0.0.0-20190802002840-cff245a6509b
golang.org/x/lint v0.0.0-20200302205851-738671d3881b
golang.org/x/mobile v0.0.0-20190719004257-d2bd2a29d028
golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4
golang.org/x/net v0.0.0-20220630215102-69896b714898
golang.org/x/oauth2 v0.0.0-20220223155221-ee480838109b
golang.org/x/perf v0.0.0-20180704124530-6e6d33e29852
golang.org/x/sync v0.0.0-20220513210516-0976fa681c29
golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a
golang.org/x/term v0.0.0-20210927222741-03fcf44c2211
golang.org/x/text v0.3.7
golang.org/x/time v0.0.0-20191024005414-555d28b269f0
golang.org/x/tools v0.1.11
golang.org/x/xerrors v0.0.0-20220609144429-65e65417b02f
google.golang.org/api v0.30.0
google.golang.org/appengine v1.6.6
google.golang.org/genproto v0.0.0-20200825200019-8632dd797987
google.golang.org/grpc v1.31.0
google.golang.org/protobuf v1.28.0
gopkg.in/alecthomas/kingpin.v2 v2.2.6
gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c
gopkg.in/errgo.v2 v2.1.0
gopkg.in/fsnotify.v1 v1.4.7
gopkg.in/inf.v0 v0.9.1
gopkg.in/src-d/go-cli.v0 v0.0.0-20181105080154-d492247bbc0d
gopkg.in/src-d/go-log.v1 v1.0.1
gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7
gopkg.in/yaml.v2 v2.4.0
gopkg.in/yaml.v3 v3.0.1
grpc.go4.org v0.0.0-20170609214715-11d0a25b4919
honnef.co/go/tools v0.0.1-2020.1.4
lukechampine.com/blake3 v1.1.7
rsc.io/binaryregexp v0.2.0
rsc.io/quote/v3 v3.1.0
rsc.io/sampler v1.3.0
sourcegraph.com/sourcegraph/go-diff v0.5.0
sourcegraph.com/sqs/pbtypes v0.0.0-20180604144634-d3ebe8f20ae4