功能：

1. IP 登錄限制：設定每個 IP 地址最多允許的帳號登錄數量，防止單一 IP 過多帳號同時在線。
2. 代理和 VPN 檢測：通過 IPHub 服務檢測玩家的 IP 是否來自代理或 VPN，阻止可疑的代理或 VPN 使用者登錄，保障伺服器安全。
3. 自定義訊息：提供訊息配置文件，可自定義各類提示訊息，提升玩家的互動體驗。

使用理由：

1. 增強伺服器安全性：有效防止惡意使用代理或 VPN 登錄，減少被攻擊或濫用的風險。
2. 提升管理效率：簡單的配置和自動化的檢測機制，讓管理員更輕鬆地維護伺服器秩序。
3. 提高玩家體驗：通過自定義訊息功能，為玩家提供友好的登錄提示和互動訊息。

安裝與配置指南：

1. 下載與安裝插件
   
   • 將編譯好的插件 jar 文件放入伺服器的 plugins 目錄中。
2. 獲取IPHub API密鑰
   
   • 訪問 IPHub 官網，點擊右上角的「註冊」按鈕。
   • 完成註冊流程並登錄你的帳戶。
   • 在「API Keys」頁面，你可以看到一個默認的API密鑰。如果沒有，點擊「Create new API Key」按鈕來生成一個新的API密鑰。
   • 複製該API密鑰，將其放入 config.yml 文件中的 api-key 欄位。
3. 配置插件
   
   • 打開 config.yml 文件，設置最大 IP 登錄數量和 API 密鑰：
     yaml
     max-accounts-per-ip: 2
     api-key: "your_api_key" # 替換為你的實際API密鑰
     
     
   • 打開 message.yml 文件，根據需要自定義提示訊息：
     yaml
     messages:
     kick-message: "該IP已達到最大登入數量限制"
     login-success: "歡迎登入！"
     logout-message: "您已成功登出！"
     proxy-kick-message: "禁止使用代理或VPN登入"
     
4. 重啟伺服器
   
   • 確保所有配置已正確設置，重啟伺服器使配置生效。
5. 監控與維護
   
   • 定期檢查伺服器日誌，觀察插件的運行情況，確保所有功能正常工作。
   • 根據玩家反饋，適時調整配置文件中的參數，提供最佳的使用體驗。

總結：
這款插件將有效提升您的伺服器安全性，阻止不良玩家濫用代理或 VPN 登錄，同時提供靈活的自定義訊息功能，改善玩家互動體驗。立即安裝，讓您的伺服器更安全、更高效！


Plugin Name: IP Login Limiter and Proxy Detection Plugin
Overview:

1. IP Login Limiting: Configure the maximum number of accounts that can log in from a single IP address, preventing excessive simultaneous logins from the same IP.
2. Proxy and VPN Detection: Utilize the IPHub service to detect if a player's IP is from a proxy or VPN, blocking suspicious proxy or VPN users from logging in, ensuring server security.
3. Custom Messages: Provide a message configuration file that allows customizing various prompt messages, enhancing player interaction experience.

Reasons to Use:

1. Enhance Server Security: Effectively prevent malicious use of proxies or VPNs, reducing the risk of attacks or abuse.
2. Increase Management Efficiency: Simple configuration and automated detection mechanisms make it easier for administrators to maintain server order.
3. Improve Player Experience: Through the custom message feature, provide players with friendly login prompts and interactive messages.

Installation and Configuration Guide:

1. Download and Install the Plugin
   
   • Place the compiled plugin jar file into the plugins directory of your server.
2. Obtain IPHub API Key
   
   • Visit the IPHub website, and click on the "Sign Up" button at the top right.
   • Complete the registration process and log into your account.
   • On the "API Keys" page, you will see a default API key. If not, click the "Create new API Key" button to generate a new API key.
   • Copy the API key and place it in the api-key field in the config.yml file.
3. Configure the Plugin
   
   • Open the config.yml file, set the maximum number of IP logins and the API key:
     yaml
     max-accounts-per-ip: 2
     api-key: "your_api_key" # Replace with your actual API key
     
     
   • Open the message.yml file and customize the prompt messages as needed:
     yaml
     messages:
     kick-message: "This IP has reached the maximum login limit"
     login-success: "Welcome!"
     logout-message: "You have successfully logged out!"
     proxy-kick-message: "Proxy or VPN usage is not allowed"
     
4. Restart the Server
   
   • Ensure all configurations are correctly set and restart the server to apply the changes.
5. Monitor and Maintain
   
   • Regularly check server logs to monitor the plugin's performance and ensure all functionalities are working properly.
   • Adjust the parameters in the configuration files based on player feedback to provide the best user experience.

Summary:
This plugin will effectively enhance your server's security, prevent malicious players from abusing proxies or VPNs, and provide a flexible custom message feature to improve player interaction experience. Install it now to make your server safer and more efficient!