Proxy Trfyx through FastAPI

pip install fastapi uvicorn httpx

from fastapi import FastAPI, Request, Response
import httpx

app = FastAPI()

@app.get("/script.js")
async def script():
    async with httpx.AsyncClient() as client:
        r = await client.get("https://app.trfyx.com/script.js")
    return Response(r.content, media_type="application/javascript")

@app.post("/api/events")
async def events(request: Request):
    body = await request.body()
    headers = dict(request.headers)
    headers["x-forwarded-for"] = request.headers.get("x-forwarded-for", request.client.host)

    async with httpx.AsyncClient() as client:
        r = await client.post(
            "https://app.trfyx.com/api/events",
            content=body,
            headers=headers,
        )

    return Response(r.content, status_code=r.status_code, media_type=r.headers.get("content-type"))

<script
  defer
  data-website-id="YOUR_TRFYX_PROJECT_ID"
  data-domain="yourdomain.com"
  src="/script.js"
></script>