[Bug]: Unable to read data from the transport connection

[dkakaruk-woolworthslimited]

Testcontainers version

4.10.0

Using the latest Testcontainers version?

Yes

Host OS

MacOS

Host arch

ARM

.NET version

10.0.101

Docker version

Client:
 Version:           29.1.3
 API version:       1.52
 Go version:        go1.25.5
 Git commit:        f52814d
 Built:             Fri Dec 12 14:48:46 2025
 OS/Arch:           darwin/arm64
 Context:           desktop-linux

Server: Docker Desktop 4.56.0 (214940)
 Engine:
  Version:          29.1.3
  API version:      1.52 (minimum version 1.44)
  Go version:       go1.25.5
  Git commit:       fbf3ed2
  Built:            Fri Dec 12 14:50:40 2025
  OS/Arch:          linux/arm64
  Experimental:     false
 containerd:
  Version:          v2.2.1
  GitCommit:        dea7da592f5d1d2b7755e3a161be07f43fad8f75
 runc:
  Version:          1.3.4
  GitCommit:        v1.3.4-0-gd6d73eb8
 docker-init:
  Version:          0.19.0
  GitCommit:        de40ad0

Docker info

Client:
 Version:    29.1.3
 Context:    desktop-linux
 Debug Mode: false
 Plugins:
  ai: Docker AI Agent - Ask Gordon (Docker Inc.)
    Version:  v1.17.1
    Path:     /Users/dkakaruk/.docker/cli-plugins/docker-ai
  buildx: Docker Buildx (Docker Inc.)
    Version:  v0.30.1-desktop.1
    Path:     /Users/dkakaruk/.docker/cli-plugins/docker-buildx
  compose: Docker Compose (Docker Inc.)
    Version:  v5.0.0-desktop.1
    Path:     /Users/dkakaruk/.docker/cli-plugins/docker-compose
  debug: Get a shell into any image or container (Docker Inc.)
    Version:  0.0.46
    Path:     /Users/dkakaruk/.docker/cli-plugins/docker-debug
  desktop: Docker Desktop commands (Docker Inc.)
    Version:  v0.2.0
    Path:     /Users/dkakaruk/.docker/cli-plugins/docker-desktop
  extension: Manages Docker extensions (Docker Inc.)
    Version:  v0.2.31
    Path:     /Users/dkakaruk/.docker/cli-plugins/docker-extension
  init: Creates Docker-related starter files for your project (Docker Inc.)
    Version:  v1.4.0
    Path:     /Users/dkakaruk/.docker/cli-plugins/docker-init
  mcp: Docker MCP Plugin (Docker Inc.)
    Version:  v0.35.0
    Path:     /Users/dkakaruk/.docker/cli-plugins/docker-mcp
  model: Docker Model Runner (Docker Inc.)
    Version:  v1.0.6
    Path:     /Users/dkakaruk/.docker/cli-plugins/docker-model
  offload: Docker Offload (Docker Inc.)
    Version:  v0.5.38
    Path:     /Users/dkakaruk/.docker/cli-plugins/docker-offload
  pass: Docker Pass Secrets Manager Plugin (beta) (Docker Inc.)
    Version:  v0.0.22
    Path:     /Users/dkakaruk/.docker/cli-plugins/docker-pass
  sandbox: Docker Sandbox (Docker Inc.)
    Version:  v0.6.0
    Path:     /Users/dkakaruk/.docker/cli-plugins/docker-sandbox
  sbom: View the packaged-based Software Bill Of Materials (SBOM) for an image (Anchore Inc.)
    Version:  0.6.0
    Path:     /Users/dkakaruk/.docker/cli-plugins/docker-sbom
  scout: Docker Scout (Docker Inc.)
    Version:  v1.19.0
    Path:     /Users/dkakaruk/.docker/cli-plugins/docker-scout

Server:
 Containers: 0
  Running: 0
  Paused: 0
  Stopped: 0
 Images: 6
 Server Version: 29.1.3
 Storage Driver: overlayfs
  driver-type: io.containerd.snapshotter.v1
 Logging Driver: json-file
 Cgroup Driver: cgroupfs
 Cgroup Version: 2
 Plugins:
  Volume: local
  Network: bridge host ipvlan macvlan null overlay
  Log: awslogs fluentd gcplogs gelf journald json-file local splunk syslog
 CDI spec directories:
  /etc/cdi
  /var/run/cdi
 Discovered Devices:
  cdi: docker.com/gpu=webgpu
 Swarm: inactive
 Runtimes: io.containerd.runc.v2 runc
 Default Runtime: runc
 Init Binary: docker-init
 containerd version: dea7da592f5d1d2b7755e3a161be07f43fad8f75
 runc version: v1.3.4-0-gd6d73eb8
 init version: de40ad0
 Security Options:
  seccomp
   Profile: builtin
  cgroupns
 Kernel Version: 6.12.54-linuxkit
 Operating System: Docker Desktop
 OSType: linux
 Architecture: aarch64
 CPUs: 12
 Total Memory: 7.653GiB
 Name: docker-desktop
 ID: eaefaf95-3e9c-4749-96df-4aeb8b4b138e
 Docker Root Dir: /var/lib/docker
 Debug Mode: false
 HTTP Proxy: http.docker.internal:3128
 HTTPS Proxy: http.docker.internal:3128
 No Proxy: hubproxy.docker.internal
 Labels:
  com.docker.desktop.address=unix:///Users/dkakaruk/Library/Containers/com.docker.docker/Data/docker-cli.sock
 Experimental: false
 Insecure Registries:
  hubproxy.docker.internal:5555
  ::1/128
  127.0.0.0/8
 Live Restore Enabled: false
 Firewall Backend: iptables

What happened?

I started experiencing timeout when running tests after clearing the local images cache.
So not sure if this is the newest version related.

Has anyone reported anything similar?

Relevant log output

System.TimeoutException
The operation was canceled.
  Exception doesn't have a stacktrace

System.Threading.Tasks.TaskCanceledException
The operation was canceled.
   at System.Net.Http.HttpConnection.SendAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
   at System.Net.Http.HttpConnectionPool.SendWithVersionDetectionAndRetryAsync(HttpRequestMessage request, Boolean async, Boolean doRequestAuth, CancellationToken cancellationToken)
   at System.Net.Http.RedirectHandler.SendAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
   at System.Net.Http.SocketsHttpHandler.<SendAsync>g__CreateHandlerAndSendAsync|115_0(HttpRequestMessage request, CancellationToken cancellationToken)
   at System.Net.Http.HttpClient.<SendAsync>g__Core|83_0(HttpRequestMessage request, HttpCompletionOption completionOption, CancellationTokenSource cts, Boolean disposeCts, CancellationTokenSource pendingRequestsCts, CancellationToken originalCancellationToken)

System.IO.IOException
Unable to read data from the transport connection: Operation canceled.
   at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.ThrowException(SocketError error, CancellationToken cancellationToken)
   at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.System.Threading.Tasks.Sources.IValueTaskSource<System.Int32>.GetResult(Int16 token)
   at System.Net.Http.HttpConnection.InitialFillAsync(Boolean async)
   at System.Net.Http.HttpConnection.SendAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)

System.Net.Sockets.SocketException
Operation canceled
  Exception doesn't have a stacktrace

Additional information

No response

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🔗 Related PRs

#1576 - feat: Support configuring Docker API version [merged]
#1583 - feat: Add KurrentDb module [merged]
#1609 - feat: Add Docker Engine v29 support [merged]
#1624 - fix(EventHubs): Workaround health API timeout [merged]
#1625 - fix(ServiceBus): Workaround health API timeout [merged]

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[HofmeisterAn]

I started experiencing timeout when running tests after clearing the local images cache.

Thank you for creating the issue. Are you using Event Hubs or Service Bus? Which modules (container builder configurations) do you use?

[dkakaruk-woolworthslimited]

thanks for responding. I use both service bus and event hubs in my integration tests

…

On Mon, 19 Jan 2026 at 18:50, Andre Hofmeister ***@***.***> wrote: *HofmeisterAn* left a comment (testcontainers/testcontainers-dotnet#1626) <#1626 (comment)> I started experiencing timeout when running tests after clearing the local images cache. Thank you for creating the issue. Are you using Event Hubs or Service Bus? Which modules (container builder configurations) do you use? — Reply to this email directly, view it on GitHub <#1626 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/A7SMCQSEMS6U5DUXQOU4OT34HSEC3AVCNFSM6AAAAACSD7NLOGVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZTONRWHEZTENBXGY> . You are receiving this because you authored the thread.Message ID: ***@***.***>

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[HofmeisterAn]

Unfortunately, this is a known "bug" in both container images (which are not versioned). It was initially reported here: Azure/azure-event-hubs-emulator-installer#69. I have already updated the modules, though I hope the upstream fix will make checking the console message unnecessary again:

• fix(EventHubs): Workaround health API timeout #1624
• fix(ServiceBus): Workaround health API timeout #1625

As a workaround, you can override the module's default wait strategy:

testcontainers-dotnet/src/Testcontainers.EventHubs/EventHubsBuilder.cs

Lines 171 to 175 in dde205f

	.WithWaitStrategy(Wait.ForUnixContainer()
	// https://github.com/Azure/azure-event-hubs-emulator-installer/issues/69#issuecomment-3762895979.
	.UntilMessageIsLogged("Emulator Service is Successfully Up!")
	.UntilHttpRequestIsSucceeded(request =>
	request.ForPort(EventHubsHttpPort).ForPath("/health")));

Hope that helps.