Question on Spring Boot + Azure Listening Port

Question

I am a spring boot starter and a cloud starter, and I deploy my spring boot project (Rest API) in Azure via App Service (Using Intellij Plugin Azure ToolKit).

When I get my deploy url which is like https://DOMAIN.azurewebsites.net, I am curious why I can fetch my data without typing :8080 PORT. I don't add the server.port=8080 in my application.properties.

Usually, if you are deploying your spring boot project in a Linux instance (Both AWS EC2 and Azure VM), and you can get your data by typing: http://<YOUR_LINUX_PUBLIC_IP>:8000

I try to get my data by both https://DOMAIN.azurewebsites.net and http://.azurewebsites.net, and they all work.

However, if I try: https://****.azurewebsites.net:8000, it shows I can not access this URL. Is Azure applying my Spring Boot Service to both HTTPS and HTTP port by default?

Hi, That's the typo. I should change it to 8080, but still not working — Honghai Mei, Apr 15 '21 at 07:50
Hi @Honghai Mei, Kindly let me know if you need more information. — Joseph Xu, Apr 17 '21 at 07:20
@Joseph, I am so sorry to reply to you so late, thanks for ur answering! Looks like Web App Serivce in Azure only open 443 and 80 Ports — Honghai Mei, Apr 18 '21 at 08:25

score 2 · Accepted Answer · answered Apr 15 '21 at 09:12

Web Apps don't have a port-mapping feature. The only ports open for Web Apps are 80 and 443.
https://DOMAIN.azurewebsites.net:443
http://DOMAIN.azurewebsites.net:80
Traffic Manager does not provide port-mapping. You'd need to run your own proxy for handling this.

So we can't specify 8080 port in Web Apps. If you need that control, you can use Cloud Services or Virtual Machines.
Refer to this answer.

Question on Spring Boot + Azure Listening Port

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