Current behavior
Creating subscription connections fails, and results in opcode -1.
Reproduction
https://github.com/moritzmorgenroth/prisma_subscription_issue
Expected behavior?
It works.
Please open a new issue and provide a reproduction :slightly_smiling_face:
@marktani i understood. I have site on https://domain/ and rewrite api on port 4000 by rule /api/ => / :4000
When i open playground on https://domain/api/ payload setted to https://domain/ I do add /api/ and all OK, but ws-requests still sending on root

I think it's issue for playground
Yes, that's looks like an issue in the Playground, please post it here: https://github.com/graphcool/graphql-playground 馃檪
@marktani , done.
Excuse for troubling