SKIT.FlurlHttpClient.Wechat

This SDK is a wrapper around the Enterprise WeChat (Wechat Work) HTTP APIs based on Flurl.Http. It supports four development modes:

1. Internal enterprise development
2. Third-party application development
3. Service provider proxy development
4. Smart hardware development

Key capabilities include:

• Built-in AES, RSA, and SHA-1 algorithm tools required by Wechat Work.
• Support for Session Content Archiving (based on C SDK).
• Support for Intelligent Robot Webhooks.
• Extensions for JS-SDK signature generation and callback event parsing.

This module is a specialized SDK for the WeChat Pay v3 API built on top of Flurl.Http.

Key capabilities include:

• Multiple Access Modes: Supports both direct connection (standard merchants) and partner modes (service providers, channel merchants, institutions, banks).
• Automatic Signing: Automatically generates signatures for requests (supporting both international RSA and Chinese SM algorithms) without manual developer intervention.
• Cryptographic Tools: Provides built-in utility classes for AES, RSA, SM2/SM3/SM4, and SHA-256.
• Data Handling: Includes extension methods for generating payment signatures, decrypting sensitive response data, and parsing sensitive data from callback notifications.

SKIT.FlurlHttpClient.Wechat is a .NET SDK for interacting with WeChat HTTP APIs, built upon the Flurl.Http library. It provides strongly-typed, fully asynchronous wrappers for various WeChat platforms, including Official Accounts, Open Platform, Merchant Platform (WeChat Pay), Enterprise WeChat, Ads, and the Dialogue Open Platform.

Key Features

• Based on Flurl.Http: Leverages a popular, lightweight HTTP library.
• Multi-Framework Support: Works with .NET Framework 4.6.2+, .NET Core 3.1+, and .NET 5.0+.
• Cross-Platform: Supports Windows, Linux, and macOS.
• Flexible Serialization: Supports System.Text.Json (default) and Newtonsoft.Json.
• Strongly Typed: Provides a robust, type-safe interface model.
• Full Async: Designed for asynchronous programming patterns.
• Complete Coverage: Aims to encapsulate nearly all official WeChat HTTP APIs.

SKIT.FlurlHttpClient.Wechat.OpenAI is an HTTP API SDK for the WeChat Dialogue Open Platform, built on top of Flurl.Http.

Key features include:

• Full encapsulation of the WeChat Dialogue Open Platform APIs.
• Automatic signature generation for v2 interfaces, removing the need for manual intervention.
• Built-in utility classes for required algorithms such as AES, MD5, and SHA-1.
• Extension methods for parsing callback notification events.

The sample project (SKIT.FlurlHttpClient.Wechat.Api.Sample_Net6_) is implemented using .NET 6.0 and demonstrates a complete WeChat integration workflow, including multi-tenant account management, AccessToken central control, receiving WeChat server pushes, and retrieving user info via OpenId.

Third-party Dependencies

• Autofac: Dependency injection container.
• DistributedLock: Distributed locking mechanism.
• NMemory: In-memory database for demonstration.

SKIT.FlurlHttpClient.Wechat.Ads is an HTTP API SDK built on top of Flurl.Http specifically for interacting with the WeChat Advertising Platform.

Key features include:

• Encapsulation of WeChat Advertising Platform APIs.
• Automatic generation of service provider identity tokens during requests, removing the need for manual token management.
• Inclusion of utility classes for required algorithms, such as MD5, used by the WeChat Advertising Platform.

This module is a specialized SDK for the WeChat Pay v2 API built on top of Flurl.Http.

Key Features:

• Supported Modes: Supports Ordinary Merchant, Domestic Service Provider, Bank Service Provider, and Cross-border Payment, as well as Enterprise WeChat enterprise payments.
• Automatic Signing: Automatically generates signatures for requests, removing the need for manual signature logic.
• Cryptographic Tools: Includes utility classes for AES, MD5, and HMAC-SHA-256 required by WeChat Pay.
• Extensions: Provides extension methods for generating payment signatures for clients (JSAPI, App, Mini Program, etc.), parsing callback notifications, and decrypting sensitive data in callback events.

Note: This module is strictly for v2 API. For v3 API, use SKIT.FlurlHttpClient.Wechant.TenpayV3.