Simple Reverse Proxy Load-balancing in Python

About

The Reverse Proxy keeps track of available servers, receives client data, forwards client data to servers with corresponding privacy policy based on Round-Robin loadbalancing, receives processed data from servers, and returns the processed data to the clients. Each process is maintained using thread. The socket programming is done using python (version 3.x).

Setup

clone the repository to your home directory
make sure python (3.x) is selected by default as python (virtual env is preferable)
Run pip install -r requirements.txt
run ./main.sh in Mac terminal or ./main_linux in a Linux terminal. Outputs are visible in several terminals.
If ./main.sh or ./main_linux does not work properly, please open new terminal tabs/windows (after going to the reverse_proxy directory) and run the nodes as follows:
- For the reverse proxy
```
$ python reverse_proxy.py -port 2100
```
- Example servers
```
$ python server.py -id 100 -pp 111 -listen 2105 -revproc 2100
```
- Example clients
```
$ python client.py -id 1 -revproc 2100 -pkt pktfiles/1.json
```

N.B. Please note that, you can change any of the argument values (id/pp/listen/revproc). For convenience here, I used only two privacy policies (111/222) for four servers and requested services from six clients to check if the round robin works properly.

Examples

Reverse Proxy

Server

Client

Video Illustration (GIF)

AWS Adoption

The reverse proxy is also implemented in AWS EC2 instance. The working procedure will be published in a blog post (I will include the link later). Using one EC2 instance for reverse proxy and other two as a general server, you can take a look at the following visualizations

Future Work

Full Documentation
Improve Automation
Develop Fault-tolerant Load-balancing features

Thanks to

Stack Overflow
Github
Other random tutorials

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Created TextArt using patorjk.com

liuHprogramming/reverse_proxy