'Bad Request This combination of host and port requires TLS.' issue calling springboot app running as azure container app

Question

'Bad Request This combination of host and port requires TLS.' issue calling springboot app running as azure container app

Hi

Im facing 'Bad Request This combination of host and port requires TLS.' issue calling a springboot application deployed as azure container app. This springboot application is running on https and ssl enabled.

The container app has ingress enabled. Im using container app url(https) Ito hit the end point hosted on the springboot application. Looks like though the springboot app runs on https, calls to container app are routed as http resulting in TLS error.

Ex container endpoint;- https://abcservicecnt.bforest-xyz.westus3.azurecontainerapps.io/my-end-point

Any help would be appreciated. Thanks.

Shireesha Eeraboina 1,980 Reputation points Microsoft External Staff

2025-03-12T07:58:52.32+00:00
Hi Chandrashekar, Anil (Cognizant),

Thanks for reaching out.

The error arises because the ingress of Azure Container Apps is forwarding HTTP traffic to your Spring Boot application, which expects HTTPS. To resolve this:

Disable Insecure Traffic:

Set allowInsecure: false in your Container App’s ingress configuration to enforce HTTPS-only traffic. Here’s an example for Bicep:

ingress: { allowInsecure: false }

Verify TLS Termination:

Ensure that TLS is terminated at the ingress level. If your Spring Boot application still requires HTTPS internally, consider disabling it since the ingress already manages TLS.

Check Certificate Configuration:

If you are using a custom domain, bind a TLS certificate to the Container App through the Azure Portal or CLI. For default domains, Azure automatically provides TLS.

For your reference, please review the following documentations for further clarification:

Troubleshoot a container app

Client traffic to the application

If issues continue, verify the server port and SSL settings of your Spring Boot application to ensure it accepts HTTP if the ingress is handling TLS.

If you have any further queries, please let us know we are glad to help you.

Your answer

Shireesha Eeraboina 1,980 Reputation points Microsoft External Staff

2025-03-12T07:58:52.32+00:00

Hi Chandrashekar, Anil (Cognizant),

Thanks for reaching out.

The error arises because the ingress of Azure Container Apps is forwarding HTTP traffic to your Spring Boot application, which expects HTTPS. To resolve this:

Disable Insecure Traffic:

Set allowInsecure: false in your Container App’s ingress configuration to enforce HTTPS-only traffic. Here’s an example for Bicep:

ingress: { allowInsecure: false }

Verify TLS Termination:

Ensure that TLS is terminated at the ingress level. If your Spring Boot application still requires HTTPS internally, consider disabling it since the ingress already manages TLS.

Check Certificate Configuration:

If you are using a custom domain, bind a TLS certificate to the Container App through the Azure Portal or CLI. For default domains, Azure automatically provides TLS.

For your reference, please review the following documentations for further clarification:

Troubleshoot a container app

Client traffic to the application

If issues continue, verify the server port and SSL settings of your Spring Boot application to ensure it accepts HTTP if the ingress is handling TLS.

If you have any further queries, please let us know we are glad to help you.

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'Bad Request This combination of host and port requires TLS.' issue calling springboot app running as azure container app

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