WebSocket working on local, AWS but not on AliBaba cloud

Question

We've a pretty straight WebSocket node.js implementation which is working fine on

• our local machines.
• AWS cloud

but not working on

• Alibaba cloud

All the http/https requests are hitting but the websocket requests are not.

Tried to find the RCA of this:

• Google Chromium browser specific support issue
• Issue with Google App Engine
• Some deleted stackoverflow thread
• All ports are open in our case, and we're not using Socket.io also
• Code is not the problem for us
• Don't know if Alibaba blocks 8000/tcp ports
• We're too not sure why it's not working with Websockets
• CORS is enabled with the node server app already

Not very sure if Alibaba cloud supports WebSockets also.

Any more kind suggestions please?

Answer 1

We implemented WebSocket successfully for both AWS and Alibaba Cloud. WebSocket requires proper SSL termination, AWS/local and Alibaba Cloud have different locations for https/SSL settings depending on your application architecture. You can read the "WebSocket support" in the following Alibaba Cloud document to find out more details: https://www.alibabacloud.com/help/doc-detail/50309.htm

The AWS guide is: https://aws.amazon.com/blogs/database/how-to-build-a-chat-application-with-amazon-elasticache-for-redis/