My server side setup is like this : I have a google compute engine instance running nodejs server. It sits behind https load balancer.
So the issue is that if OPTIONS type request is sent with body(payload) to load balancer ip, it sometimes fail with 502. I have checked that in all these requests, node server is returning and logging correct responses. It works perfect if the request body is left empty.
However, when I directly hit GCE's ip, it works fine whether or not request body is there or not.
For e.g this is the load balancer ip (with ssl enabled)
OPTIONS https://130.211.14.60/health
this is the direct GCE machine ip (without ssl)
OPTIONS http://104.199.159.212:8002/health
I have checked by sending requests multiple times(literally hundreds of times) using Postman app.
And this issue is only with DELETE and OPTIONS type requests. GET/POST/PUT works perfectly fine.
Is there anyone who can point me what the issue could be and how to solve it.