From 4c6bf353aefe1c895cc4ab70eb863d1885163f4b Mon Sep 17 00:00:00 2001
From: Sebastian <379651+czarly@users.noreply.github.com>
Date: Thu, 6 Mar 2025 07:33:29 +0100
Subject: [PATCH] initial commit

---
 drpc-beacon-proxy-holesky.yml | 18 ++++++++++++++++++
 drpc-beacon-proxy/Dockerfile  |  9 +++++++++
 drpc-beacon-proxy/proxy.py    | 33 +++++++++++++++++++++++++++++++++
 3 files changed, 60 insertions(+)
 create mode 100644 drpc-beacon-proxy-holesky.yml
 create mode 100644 drpc-beacon-proxy/Dockerfile
 create mode 100644 drpc-beacon-proxy/proxy.py

diff --git a/drpc-beacon-proxy-holesky.yml b/drpc-beacon-proxy-holesky.yml
new file mode 100644
index 00000000..4663f88e
--- /dev/null
+++ b/drpc-beacon-proxy-holesky.yml
@@ -0,0 +1,18 @@
+services:
+  beacon-proxy:
+    build: ./drpc-beacon-proxy/
+    expose:
+      - "80:80"
+    environment:
+      DKEY: "${DRPC_API_KEY}"
+      NETWORK: "holesky"
+    labels:
+      - "traefik.enable=true"
+      - "traefik.http.middlewares.drpc-beacon-proxy-holesky-stripprefix.stripprefix.prefixes=/drpc-beacon-proxy-holesky"
+      - "traefik.http.services.drpc-beacon-proxy-holesky.loadbalancer.server.port=80"
+      - "traefik.http.routers.drpc-beacon-proxy-holesky.entrypoints=websecure"
+      - "traefik.http.routers.drpc-beacon-proxy-holesky.tls.certresolver=myresolver"
+      - "traefik.http.routers.drpc-beacon-proxy-holesky.rule=Host(`$DOMAIN`) && PathPrefix(`/drpc-beacon-proxy-holesky`)"
+      - "traefik.http.routers.drpc-beacon-proxy-holesky.middlewares=drpc-beacon-proxy-holesky-stripprefix, ipwhitelist"
+    networks:
+      - chains
diff --git a/drpc-beacon-proxy/Dockerfile b/drpc-beacon-proxy/Dockerfile
new file mode 100644
index 00000000..7793149a
--- /dev/null
+++ b/drpc-beacon-proxy/Dockerfile
@@ -0,0 +1,9 @@
+FROM python:3.11-slim
+
+WORKDIR /app
+
+RUN pip install flask requests
+
+COPY proxy.py /app/
+
+CMD ["python", "proxy.py"]
diff --git a/drpc-beacon-proxy/proxy.py b/drpc-beacon-proxy/proxy.py
new file mode 100644
index 00000000..0e0c5bbf
--- /dev/null
+++ b/drpc-beacon-proxy/proxy.py
@@ -0,0 +1,33 @@
+import os
+from flask import Flask, request, Response
+import requests
+
+app = Flask(__name__)
+
+# Read config from environment variables
+DKEY = os.getenv("DKEY", "your-default-dkey")
+NETWORK = os.getenv("NETWORK", "holesky")
+TARGET_URL = f"https://lb.drpc.org/rest/eth-beacon-chain-{NETWORK}"
+
+@app.route('/<path:subpath>', methods=["GET", "POST", "PUT", "DELETE", "PATCH"])
+def proxy(subpath):
+    url = f"{TARGET_URL}/{subpath}"
+    
+    # Forward query params and add the dkey
+    params = request.args.to_dict()
+    params["dkey"] = DKEY
+
+    # Forward headers (except Host) and body
+    headers = {k: v for k, v in request.headers if k.lower() != "host"}
+    data = request.get_data() if request.method in ["POST", "PUT", "PATCH"] else None
+
+    # Forward the request
+    resp = requests.request(
+        method=request.method, url=url, params=params, headers=headers, data=data
+    )
+
+    # Return response with original status and headers
+    return Response(resp.content, resp.status_code, resp.headers.items())
+
+if __name__ == "__main__":
+    app.run(host="0.0.0.0", port=80)