• Welcome to the ThingWorx Edge C SDK, SCM Edge Extension, and Remote Session Edge Extension for the C SDK Help Center
• Release Notes for ThingWorx C SDK
  • ThingWorx C SDK 3.1.0
    • What’s New in ThingWorx C SDK 3.1.0
    • Fixed Issues in ThingWorx C SDK 3.1.0
    • Known Issues in ThingWorx C SDK 3.1.0
  • ThingWorx C SDK 3.0.0
    • What’s New in ThingWorx C SDK 3.0.0
    • Fixed Issues in ThingWorx C SDK 3.0.0
• Release Notes for ThingWorx Remote Session Edge Extension
  • ThingWorx RSEE 1.0.2
    • What’s New in ThingWorx RSEE 1.0.2
    • Known Issues in ThingWorx RSEE 1.0.2
• Release Notes for Previous Releases: ThingWorx Edge C SDK
• Release Notes for Previous Releases: ThingWorx SCM Edge Extension for the ThingWorx Edge C SDK
• Quick Start for the C SDK
• ThingWorx Edge C SDK
  • ThingWorx Edge C SDK
  • Before You Begin
  • How to Configure Components of the C SDK
    • Handling Offline Messages
  • How to Set Up an Application
    • Initializing the API Singleton
    • Creating a Data Collection Task
    • Connecting to the ThingWorx Platform and Initiating Defined Tasks
    • Binding Your Entities
      • Creating a Bind Event Handler (Optional)
    • Defining Properties
      • Defining Property Callback Functions
      • Property Access Callbacks
      • ThingWorx Base Types (C SDK Details)
      • Tips for Choosing an API for Properties
    • Defining Service Callback Functions
    • Registering Properties and Services
    • Defining Events
    • Registering Events
    • Initiating Interactions with a ThingWorx Platform
      • Read a Property
      • Write a Property
      • Push Properties
      • Execute a Service
      • Trigger an Event
    • Initializing the File Manager (Optional)
      • Create a File Transfer Event Handler (Optional)
    • Initializing the Tunnel Manager (Optional)
      • Create a Tunnel Event Handler (Optional)
    • Implementing a Synchronized State Handler
  • How to Set Up Security
    • Using SSL/TLS for Security
    • Setting Up Secure Connections
    • Proxy Server Authentication
    • Cipher Suites
    • Troubleshooting Connection Errors (C SDK v.1.4.0 and earlier)
    • Debugging with GDB and OpenSSL on ARM Platforms
  • How to Take Advantage of the C SDK Utilities
    • Using Linked Lists, Maps, and Dictionaries
  • How to Build an Edge Application with CMake
    • Configuring Options for a CMake Build
    • Building for Linux Platforms with CMake
      • Installing and Navigating the Directories of the C SDK
    • Building for Windows Platforms with CMake
    • Using CMake with the C SDK Examples
  • Best Practices
    • Minimizing Code Footprint
    • Best Practices for Transferring Large Files
    • Running the C SDK on Windows-based Operating Systems
  • C SDK Data Structures and Types
    • Basic Data Structures
    • twPrimitive Structure
    • twInfoTable
  • Error Codes
    • General Errors
    • WebSocket Errors
    • Messaging Errors
    • Primitive and InfoTable Errors
    • List Errors
    • API Errors
    • Tasker Errors
    • Logger Errors
    • Utils Errors
    • System Socket Errors
    • Message Code Errors
      • Troubleshooting an Error Pushing/Persisting Properties and Property Lists
    • Subscribed (Managed) Property Errors
    • File Transfer Errors
    • Tunneling Errors
    • TLS Errors
  • Callback Function Return Codes
• Using Edge Extensions with the ThingWorx Edge C SDK
  • ThingWorx Edge SDK Extensions for the C SDK
    • Creating a Directory of Registered Shapes and Templates
    • Loading Shape Libraries
    • Tasks for EdgeThingShape and EdgeThingTemplate Constructors
  • Macros for the Edge Extensions
    • Macros That Take Actions
    • Macros to Create twPrimitives from C Primitives
    • Macros to Create Data Shapes and Single Columns
    • Macros to Create InfoTables for Data Shapes
    • Declaring Edge Things
    • Defining Aspects for Properties (Edge Extensions)
  • Services
  • Events
  • Best Practices for Developing Edge Extensions
  • Examples of Using Edge Extensions with the C SDK
    • Simple Thing Extension
    • Warehouse Shape Library
    • SteamSensor Example
  • Advanced Use of Edge Extensions
    • Modifying Property Values at Runtime
      • Property Change Listeners
    • Applying EdgeThingShapes at Runtime
    • Inter-Shape Communication
    • Calling ThingWorx Platform Functions
    • Polling Updates for EdgeThingShapes
• ThingWorx SCM Edge Extension for the ThingWorx Edge C SDK
  • SCM Edge Extension Capabilities
    • SCM Packages
    • SCM State Transitions
    • Whitelist for SCM Packages
    • Surviving a Reboot of the SCM Client
  • Setting Up SCM
  • Digitally Signing Packages
  • SCM Edge Extension Examples
    • SCM Client Example
    • SCM as a Linux Daemon Example
    • SCM as Windows Service Example
• ThingWorx Remote Session Edge Extension for the ThingWorx Edge C SDK
  • Setting Up the Thingworx Platform for RSEE
    • Install the Remote Access Extension (RAE)
    • Remote Access Using the Remote Session Edge Extension (RSEE)
    • How to Model a Remote Session Capable Edge Thing in ThingWorx
    • Security and Permissions
    • Setting up Remote Sessions to RSEE Capable Edge Things for Non-Admin Users
  • Building RSEE and Running the Example Agent
    • Configuring the Example Agent
    • Running the Example Agent
    • Configuring a Remote Access Endpoint
    • Enable Remote Session Logs from RSEE
  • Incorporating RSEE Into the C SDK Agent
• ThingWorx Edge SDKs: Tutorial
  • AlwaysOn SDKs: Connecting Your Devices to ThingWorx Platform
  • What is the ThingWorx AlwaysOn Protocol?
  • The Connection Process
  • Invoking Services
  • Property Subscriptions
  • Creating and Pushing Property Changes
• ThingWorx Concepts
  • Primitives and Infotables
  • Getting to Know Infotables
  • File Transfers
• How to
  • Create an Application Key for an Edge Device
  • Transfer Files Using the Copy Service
• Troubleshooting Edge SDK Applications
  • Information to Provide When Reporting an Issue
  • Taxonomy of Errors
  • WebSocket Disconnects
  • Multipart Messages Time Out
  • Multipart Message Too Large