Initial commit

Author: almathie

Dockerfile

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+FROM alpine
+RUN apk add --no-cache \
+    curl \
+    bash \
+    git \
+    dumb-init \
+    openssl
+
+WORKDIR /app
+ADD glider glider.conf entrypoint.sh ./
+
+EXPOSE 15000
+
+ENTRYPOINT ["/app/entrypoint.sh"]
+CMD ["/app/glider", "-config", "/app/glider.conf"]

README.md

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+# Simple Proxy Rotator
+
+`Simple Proxy Rotator` - acts as an http(s) forward proxy rotator.
+
+It uses [glider](https://github.com/nadoo/glider) to evenly requests to a list of configured proxies.
+
+## Introduction
+
+You have: a list of http(s) proxies bought from a provider
+
+You need: to distribute http(s) requests amongst those proxies.
+
+Solution: configure your clients to use `Simple Proxy Rotator` as the forward proxy, and it will distribute the requests in round robin mode amongst its configured proxies.
+
+Additionally, `Simple Proxy Rotator` will check each proxy every 60 seconds and remove it from the pool in case of error.
+
+## Setup
+
+The forward proxy rotator is exposed on port `15000`.
+
+The proxy list can be configured in two ways :
+
+- Using an environment variable : `PROXY_LIST_URL`. The proxy list will be downloaded from the given URL.
+- By mounting the list as a volume on `/app/proxy-list.txt`
+
+The proxy list should have 1 proxy per line using the following format : `http://[username]:[password]@[host]:[port]`. Example
+
+````
+http://user1:password1@12.34.56.78:1111
+http://user2:password2@98.76.54.32:2222
+...
+````
+
+## Usage
+
+### Start the container using a downloadable proxy list
+
+````
+docker run -p 1234:15000 -e PROXY_LIST_URL=https://gist.githubusercontent.com/you/private-gist-hash/raw/proxy-list.txt almathie/simple-proxy-rotator
+````
+
+### Start the container using a volume mounted proxy list
+
+````
+docker run -p 1234:15000 -v /path/to/proxy-list.txt:/app/proxy-list.txt almathie/simple-proxy-rotator
+````
+
+### Use the rotator
+
+````
+curl -x "http://127.0.0.1:1234" "https://google.com"
+````

entrypoint.sh

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+#!/bin/bash
+set -e
+
+if [[ -z "${PROXY_LIST_URL}" ]]; then
+    echo "Using mounted proxy list"
+    touch /app/proxy-list.txt
+    echo " ---> Done"
+else
+    echo "Downloading proxy list from $PROXY_LIST_URL"
+    curl -s $PROXY_LIST_URL > /app/proxy-list.txt
+    echo " ---> Done"
+fi
+
+echo "Adding proy list to config file"
+# Remove blank lines
+sed -i '/^$/d' /app/proxy-list.txt
+# Prepend forward= in front of each line to match glider config syntax
+sed -i 's/^/forward=/' /app/proxy-list.txt
+# Randomize and happen 
+cat /app/proxy-list.txt | shuf >> /app/glider.conf
+echo " ---> Done"
+
+echo "Using config file"
+cat /app/glider.conf
+
+echo ""
+echo "Starting process"
+exec "$@"

glider

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+verbose=True
+
+listen=:15000
+
+# Round Robin
+strategy=rr
+
+# This website is not chosen randomly.
+# To perform the check, glider sends a CONNECT request
+# To the configured domain and port of checkwebsite
+# Then send an HTTP GET request on / without negociating TLS
+# It expects a response from that request but does not check the
+# status.
+#
+# Some proxies refuse CONNECT requests for target
+# whose port is other that 443. So we need checkwebsite to
+# finish in :443
+# And most websites will simply close the TCP channel without
+# responding if you send an HTTP request without TLS on port
+# 443. Which thus fails the check while the proxy itself is fine.
+# Few domains will reply with a 400 error which is good enough
+# for this check.
+# Some known domains that do that are :
+# httpbin.org // tomorrowland.com // amazon.com  // cloudflare.com
+# Just choose the most reliable one
+checkwebsite=cloudflare.com:443
+checkinterval=60
+