unable to upgrade to tcp instead of port not allocated

[maxandersen]

Issue Description

if port i use already is allocated (i.e. run podman run -p 4000:4000 -v $(pwd):/site bretfisher/jekyll-serve twice) I get:

I get an error like:

unable to upgrade to tcp, received 409

it would be nice if it would be a bit more informative, like:

port 4000 already allocated or something similar that can give a hint to user what is the actual cause/fix.

Steps to reproduce the issue

Steps to reproduce the issue

1. run docker run -p 4000:4000 -v $(pwd):/site bretfisher/jekyll-serve
2. run again in other terminal
3. see it complain about upgrade rather than port info.

Describe the results you received

see above.

Describe the results you expected

info about port already allocated.

podman info output

host:
  arch: arm64
  buildahVersion: 1.33.3
  cgroupControllers:
  - cpuset
  - cpu
  - io
  - memory
  - pids
  - rdma
  - misc
  cgroupManager: systemd
  cgroupVersion: v2
  conmon:
    package: conmon-2.1.8-2.fc39.aarch64
    path: /usr/bin/conmon
    version: 'conmon version 2.1.8, commit: '
  cpuUtilization:
    idlePercent: 93.17
    systemPercent: 1.26
    userPercent: 5.57
  cpus: 2
  databaseBackend: sqlite
  distribution:
    distribution: fedora
    variant: coreos
    version: "39"
  eventLogger: journald
  freeLocks: 2034
  hostname: localhost.localdomain
  idMappings:
    gidmap: null
    uidmap: null
  kernel: 6.7.4-200.fc39.aarch64
  linkmode: dynamic
  logDriver: journald
  memFree: 6400225280
  memTotal: 7717904384
  networkBackend: netavark
  networkBackendInfo:
    backend: netavark
    dns:
      package: aardvark-dns-1.10.0-1.fc39.aarch64
      path: /usr/libexec/podman/aardvark-dns
      version: aardvark-dns 1.10.0
    package: netavark-1.10.1-5.fc39.aarch64
    path: /usr/libexec/podman/netavark
    version: netavark 1.10.1
  ociRuntime:
    name: crun
    package: crun-1.14-1.fc39.aarch64
    path: /usr/bin/crun
    version: |-
      crun version 1.14
      commit: 667e6ebd4e2442d39512e63215e79d693d0780aa
      rundir: /run/crun
      spec: 1.0.0
      +SYSTEMD +SELINUX +APPARMOR +CAP +SECCOMP +EBPF +CRIU +LIBKRUN +WASM:wasmedge +YAJL
  os: linux
  pasta:
    executable: /usr/bin/pasta
    package: passt-0^20231230.gf091893-1.fc39.aarch64
    version: |
      pasta 0^20231230.gf091893-1.fc39.aarch64-pasta
      Copyright Red Hat
      GNU General Public License, version 2 or later
        <https://www.gnu.org/licenses/old-licenses/gpl-2.0.html>
      This is free software: you are free to change and redistribute it.
      There is NO WARRANTY, to the extent permitted by law.
  remoteSocket:
    exists: true
    path: /run/podman/podman.sock
  security:
    apparmorEnabled: false
    capabilities: CAP_CHOWN,CAP_DAC_OVERRIDE,CAP_FOWNER,CAP_FSETID,CAP_KILL,CAP_NET_BIND_SERVICE,CAP_SETFCAP,CAP_SETGID,CAP_SETPCAP,CAP_SETUID,CAP_SYS_CHROOT
    rootless: false
    seccompEnabled: true
    seccompProfilePath: /usr/share/containers/seccomp.json
    selinuxEnabled: true
  serviceIsRemote: true
  slirp4netns:
    executable: /usr/bin/slirp4netns
    package: slirp4netns-1.2.2-1.fc39.aarch64
    version: |-
      slirp4netns version 1.2.2
      commit: 0ee2d87523e906518d34a6b423271e4826f71faf
      libslirp: 4.7.0
      SLIRP_CONFIG_VERSION_MAX: 4
      libseccomp: 2.5.3
  swapFree: 0
  swapTotal: 0
  uptime: 1h 10m 34.00s (Approximately 0.04 days)
  variant: v8
plugins:
  authorization: null
  log:
  - k8s-file
  - none
  - passthrough
  - journald
  network:
  - bridge
  - macvlan
  - ipvlan
  volume:
  - local
registries:
  search:
  - docker.io
store:
  configFile: /usr/share/containers/storage.conf
  containerStore:
    number: 11
    paused: 0
    running: 0
    stopped: 11
  graphDriverName: overlay
  graphOptions:
    overlay.imagestore: /usr/lib/containers/storage
    overlay.mountopt: nodev,metacopy=on
  graphRoot: /var/lib/containers/storage
  graphRootAllocated: 99252940800
  graphRootUsed: 10765934592
  graphStatus:
    Backing Filesystem: xfs
    Native Overlay Diff: "false"
    Supports d_type: "true"
    Supports shifting: "true"
    Supports volatile: "true"
    Using metacopy: "true"
  imageCopyTmpDir: /var/tmp
  imageStore:
    number: 6
  runRoot: /run/containers/storage
  transientStore: false
  volumePath: /var/lib/containers/storage/volumes
version:
  APIVersion: 4.9.0
  Built: 1706090829
  BuiltTime: Wed Jan 24 11:07:09 2024
  GitCommit: ""
  GoVersion: go1.21.6
  Os: linux
  OsArch: linux/arm64
  Version: 4.9.0

Podman in a container

No

Privileged Or Rootless

None

Upstream Latest Release

No

Additional environment details

Additional environment details

Additional information

No response

[rhatdan]

This same issue was closed as dup of

#19930

[maxandersen]

So...is it expected to get this error on port conflicts ?