CODEWITHSUNDEEP
azureazure-web-app-serviceazure-appservice
tRuEsAtM
tRuEsAtM

Reputation: 3668

Azure App Service to App Service communication on TLS1.2 failing

I have an Azure App Service with Stack General setting ASP.NET v4.7. However, in the web.config target runtime version is 4.5.1.

I have another Azure App Service which hosts a Linux container.

The first one is set to use TLS 1.2. I am initiating requests from .NET App(first) to Linux container(second). When the Second one, Linux container is set to use TLS 1.2 requests fail, but when set to TLS 1.0 requests process successfully.

Has anyone experienced this issue?

Upvotes: 0

Views: 1297

Answers (1)

Shridhar R Kulkarni
Shridhar R Kulkarni

Reputation: 7063

From the post it is tricky to narrow down on your issue but a couple of things you can try.

  • Ensure no hard coding of TLS version. On the contrary, you can try hardcoding the TLS version with ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;. Try to run. If it works, you'll have the clarity that there is not other issue and you need to switch to right .NET version.
  • Target your .NET Framework version 4.7 and above. You say your target runtime version is 4.5.1 which won't help sending requests with latest TLS version by default.
  • <system.web><httpRuntime targetFramework> in web.config should show the intended version of the .NET.
  • Last but not least it is always good to patiently read the doc and you might figure out the issue yourself.

Upvotes: 2

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