ArcGIS Server Proxy Service

Project Description

Due to network security requirements, the ArcGIS REST service directory (arcgis-rest-service-directory-traversal) needs to be disabled. However, this would affect WMTS and other services. Therefore, a proxy service is required to handle these requests - allowing requests with tokens or /generateToken requests while intercepting others.

This is a Node.js service for proxying ArcGIS Server requests, with main features including route interception, token validation, SQLite logging, and image processing.

Features

• Intercept all /arcgis route requests
• Implement token validation logic
• Use SQLite database for access logging
• Properly handle image responses (PNG format)
• Record user token generation information

Installation

1. Ensure Node.js environment is installed
2. Clone this project
3. Install dependencies:

npm install

Usage

1. Start the service:

npm start

2. Service runs on port 6081 by default
3. Example access:

http://localhost:6081/arcgis/rest/services?token=YOUR_TOKEN

Requirements

• Node.js 14+
• SQLite3 database
• ArcGIS Server running on port 6080

Notes

1. When forwarding requests to arcserver on port 6080, the response may be PNG images. Therefore, when making requests to the local arcserver service, set the response format to { responseType: 'arraybuffer' } and set the response header to image/png when returning.
2. Need to remove potentially duplicate Content-Length and Transfer-Encoding headers to avoid nginx forwarding errors
3. The service will automatically create access_logs.db and user_tokens.db database files
4. Higher versions of fastify require specifying host as 0.0.0.0 to allow external access

ArcGIS Server 代理服务

项目描述

因网络安全需要关闭ArcGIS REST 服务目录（arcgis-rest-service-directory-traversal），但关闭后会对wmts等服务造成影响，因此需要代理服务来处理这些请求，放行带token的请求或/generateToken请求，拦截其它请求。

这是一个用于代理ArcGIS Server请求的Node.js服务，主要功能包括路由拦截、token验证、SQLite日志记录和图片处理。

功能特性

• 拦截所有/arcgis路由请求
• 实现token验证逻辑
• 使用SQLite数据库记录访问日志
• 正确处理图片响应(PNG格式)
• 记录用户token生成信息

安装说明

1. 确保已安装Node.js环境
2. 克隆本项目
3. 安装依赖：

npm install

使用方法

1. 启动服务：

npm start

2. 服务默认运行在6081端口
3. 访问示例：

http://localhost:6081/arcgis/rest/services?token=YOUR_TOKEN

配置要求

• Node.js 14+
• SQLite3数据库
• ArcGIS Server运行在6080端口

注意事项

1. 转发到arcserver的6080请求时，返回数据可能是PNG图片，所以在请求本地arcserver服务时需要设置返回格式{ responseType: 'arraybuffer' }，并在服务返回时设置响应头为image/png。
2. 需要移除可能重复的Content-Length和Transfer-Encoding头部，否则会造成nginx转发报错
3. 服务会自动创建access_logs.db和user_tokens.db数据库文件
4. 高版本fastify需要指定host为0.0.0.0才能允许外部访问