How to receive TCP/IP communication to Azure App Service?

Question

Good day. Is it possible to receive raw TCP/IP communication from a remote device on an Azure App Service? I attempted to enable a custom TCP port on Azure App Service, but it did not work, TCP connection failed. Are there alternative methods to achieve this? If not, what serverless TCP/IP (with scaling) solutions on Azure would you recommend?

Answer 1

Hello Ruan Nagel,

Unfortunately, Azure App Service is not designed to handle raw TCP/IP communication directly. App Services primarily work over HTTP(S) and WebSockets, and they don't expose direct access to custom TCP ports.

Alternatives and Recommendations:

1. Azure Functions with TCP (via Azure Logic Apps or Azure Event Grid): While Azure Functions don't support direct TCP connections, you could set up a custom function to interact with TCP-based services via an intermediate resource like an Azure VM, or use Azure Logic Apps for service orchestration.

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Thanks & Regards,
Tasadduq Burney
(Microsoft MVP & MCT)
(Azure 15x)