fmcgeough
Endpoint config with AWS Application Load Balancer
I’m configuring a Phoenix app behind an AWS Application Load Balancer (ALB). The ALB is doing SSL termination. The Phoenix app is HTTP. If my DNS is : https://my.coolapp.com then how do I configure the Phoenix Endpoint in this case?
config :cool_app, CoolAppWeb.Endpoint,
http: [port: 80],
url: [host: "https://my.coolapp.com", scheme: "http"]
Something like that? Also, do I put “https://my.coolapp.com” into a check_origin on my UserSocket to allow web sockets to work properly?
Client Browser 443 -> ALB -> ALB terminates the certification -> forward traffic to server on port 80 http
Marked As Solved
fmcgeough
What I outlined above works fine. I did add the https url to the UserSocket check_orgin.
updates to prod.exs
config :autopsy, CoolAppWeb.Endpoint,
http: [port: 80],
url: [host: "https://my.coolapp.com", scheme: "http"],
cache_static_manifest: "priv/static/cache_manifest.json",
server: true,
root: ".",
version: Mix.Project.config()[:version]
updates to user_socket.ex
transport(
:websocket,
Phoenix.Transports.WebSocket,
check_origin: [
"http://localhost:4000",
"http://0.0.0.0:4000",
"https://my.coolapp.com"
]
)
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