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gweidart · Nov 25, 2022 · ca5cc83 · ca5cc83
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diff --git a/.gitattributes b/.gitattributes
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+# Auto detect text files and perform LF normalization
+* text=auto
diff --git a/LICENSE b/LICENSE
diff --git a/README.md b/README.md
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+# Loadbalanceeeer
+
+PoC local JSON-RPC load-balancer with opt-in anonymizer via Tor
+
+## Why
+
+Distribute RPC requests across different RPC providers and eventually use a proxy for privacy purposes
+
+## How use it
+
+- Install [Docker](https://docs.docker.com/get-docker/)
+
+- Clone the repo
+
+- Edit `rpc.txt` with your RPCs (currently some public examples from [Ethereum Nodes](https://ethereumnodes.com/))
+
+- For only load balancing, run `docker-compose up -f docker-compose.yml`
+
+- For more privacy, run `docker-compose up -f docker-compose.yml -f docker-compose.proxy.yml`
+
+- You get your new RPC at `http://localhost:9545`
+
+## Architecture
+
+Only Load Balancing
+
+```
+                            => remote_rpc_1
+                           |
+user => (localhost:9545) -     ...
+                           |
+                            => remote_rpc_N
+```
+
+With Anonymizer/Proxy
+
+```
+                                         => remote_rpc_1
+                                        |
+user => (localhost:9545) => (tor/proxy) -     ...
+                                        |
+                                         => remote_rpc_N
+```
+
+## Disclaimer
+
+This is only to demonstrate how to load balance request across multiple providers and how tunnel them via a proxy for analysis, debugging (e.g. mitmproxy) and privacy purposes. 
+
+Use at your own risks.
diff --git a/docker-compose.proxy.yml b/docker-compose.proxy.yml
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+services:
+  tor-socks: 
+    image: peterdavehello/tor-socks-proxy:latest
+    ports:
+      - "9150:9150"
+  lb:
+    environment:
+      - PROXY=socks5://tor-socks:9150
diff --git a/docker-compose.yml b/docker-compose.yml
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+services:
+  lb:
+    image: lb
+    build: ./lb
+    ports:
+      - "9545:5000"
+    env_file:
+      - rpc.txt
diff --git a/lb/Dockerfile b/lb/Dockerfile
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+# syntax=docker/dockerfile:1
+
+FROM python:3
+
+WORKDIR /app
+
+COPY requirements.txt requirements.txt
+RUN pip3 install -r requirements.txt
+
+COPY . .
+
+CMD [ "python3", "-m" , "flask", "run", "--host=0.0.0.0"]
diff --git a/lb/app.py b/lb/app.py
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+from flask import Flask, request
+from flask_cors import CORS
+from requests import post
+import os
+import random
+import logging
+
+logging.basicConfig(level=logging.INFO)
+
+api = Flask(__name__)
+CORS(api)
+
+rpcs = os.environ['RPCS'].split(',')
+api.logger.info('RPCs: %s', rpcs)
+
+proxies = {}
+if "PROXY" in os.environ:
+  proxies['http'] = os.environ['PROXY']
+  proxies['https'] = os.environ['PROXY']
+
+api.logger.info('Proxies: %s', proxies)
+
+@api.route('/', methods=['POST'])
+def proxy():
+  random_rpc = random.choice(rpcs)
+  api.logger.info('Used RPC: ' + random_rpc)
+  proxy_req = post(random_rpc, json=request.json, proxies=proxies)
+  print(proxy_req.text)
+  return proxy_req.json()
+
+if __name__ == '__main__':
+    api.run()
diff --git a/lb/requirements.txt b/lb/requirements.txt
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+requests
+pysocks
+flask
+flask-cors
diff --git a/rpc.txt b/rpc.txt
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+RPCS=https://eth-mainnet.nodereal.io/v1/1659dfb40aa24bbb8153a677b98064d7,https://cloudflare-eth.com/
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		# Auto detect text files and perform LF normalization
		* text=auto
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		RPCS=https://eth-mainnet.nodereal.io/v1/1659dfb40aa24bbb8153a677b98064d7,https://cloudflare-eth.com/