LinkPreview.net Proxy Server with Caching

interactive32

Last update: Nov 19, 2021

Related tags

Network lpproxy

Overview

LinkPreview.net Proxy Server with Caching

Description

LinkPreview API/Image Proxy Server with Caching written in Go.

Features:

In-memory caching layer for API requests
Eliminate the need to expose your LinkPreview API keys on the frontend
Image proxy to prevent leaking client IP addresses
Simple Referer header protection (accept requests from your domain only)

Installation

How to use:

Download official executable. Download for Linux 64bit Download for Windows 64bit
Create .env file configuration, see .env.example

Sample .env file:

ADDR="localhost:8000"
LINK_PREVIEW_KEY="123456"

Start your server with ./lpproxy

Note: If you want to start SSL server, add your certificate files to the .env config or create self-signed ones with:

openssl req -new -x509 -days 365 -nodes -out cert.pem -keyout cert.key

Usage

Make sure your proxy is running, then simply use this instead of api.linkpreview.net endpoint:

http://your-ip-address/linkpreview/?q=http://google.com

Serve images through your proxy:

http://your-ip-address/imageproxy/?src=https://www.google.com/images/branding/googlelogo/1x/googlelogo_color_150x54dp.png

For more options on image proxy, see https://github.com/willnorris/imageproxy

Installing as a service

How to install and run linkpreview proxy as a Systemd service in Linux:

cd /etc/systemd/system

Create a file named lpproxy.service and include the following:

[Unit]
Description=LinkPreviewProxy

[Service]
User=root
WorkingDirectory=/path/where/your/lpproxy/binary/is/located/
ExecStart=/path/where/your/lpproxy/binary/is/located/lpproxy
Restart=always

[Install]
WantedBy=multi-user.target

Reload the service files to include the new service. sudo systemctl daemon-reload

Start your proxy sudo systemctl start lpproxy.service

To check the status of your proxy sudo systemctl status lpproxy.service

To enable proxy on every reboot sudo systemctl enable lpproxy.service

Compile from sources

First, download and install Golang, then clone the project and compile:

git clone [email protected]:interactive32/lpproxy.git
cd lpproxy
go build

You can also cross compile for specific architecture:

env GOOS=windows GOARCH=amd64 go build

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