Connectivity Tester

Connectivity Tester is a tool for managing and testing server connections. It allows you to add servers to a database and perform connectivity tests on them. This tool was used to collect connectivity data for measuring shadowsocks blocking from various countries vantage points:

Features

• Add servers to a database from a file
• Test connectivity of all servers or selectively retest based on previous errors
• Support for both TCP and UDP testing

Prerequisites

• Go 1.17 or higher
• PostgreSQL database

Installation

1. Clone the repository:

   git clone https://github.com/yourusername/connectivity-tester.git
   

2. Navigate to the project directory:

   cd connectivity-tester
   

3. Install dependencies:

   go mod tidy
   

Configuration

Create a config.yaml file in the project root with the following structure:

database:
  host: localhost
  port: 5432
  user: your_username
  password: your_password
  dbname: your_database_name
  sslmode: disable

ipinfo:
  token: your_ipinfo_token

connectivity:
  resolver: 8.8.8.8
  domain: example.com

Usage

Adding Servers

To add servers from a file:

go run main.go add-servers path/to/your/file.txt

Testing Servers

• To test all servers:

  go run main.go test-servers
  

• To retest only servers with TCP errors (excluding 'connect' errors):

  go run main.go test-servers --tcp
  

• To retest only servers with UDP errors:

  go run main.go test-servers --udp
  

• To retest servers with either TCP or UDP errors:

  go run main.go test-servers --tcp --udp
  

Debug Mode

To enable debug logging, add the -d or --debug flag to any command:

go run main.go -d test-servers

License

Apache 2.0

Contributing

Feel free to open a PR if you want to add a feature or report a bug fix