REST Feature Tester

Scalable REST API test solution for all interfaces including wireline, mobile 4G/5G and IoT
REST Feature Tester

Scalable REST API test solution for all interfaces including wireline, mobile 4G/5G and IoT


REST is a common API architectural style based on HTTP that provides interoperability between computer systems on the Internet, between micro-services and was adopted by 3GPP for several interfaces in 5G. This solution allows the construction of complex REST requests that can be used for testing API features and performance under load.

What It Can Do For You

  • HTTP/1.1, HTTPS/1.1, HTTP/2 and HTTPS/2 support for aiding migration
  • Allows deterministic, state machine based testing of complex scenarios, not just single shot API calls
  • Can perform fuzz, security, feature and performance testing on single or multiple REST interfaces concurrently, generating thousands of transactions per second (scalable per machine), with fully customizable message flows and content.
  • Comes with pre-canned scenarios which can be tailored to specific requirements
  • Aids protoyping and deveopment, and a compatible migration path to our other products

Why It’s Different

  • Scalable software-based architecture can run on a range of hardware from COTS and high-end customer provided hardware to Virtual Machines and the Cloud (e.g. Amazon AWS) for maximum versatility and performance
  • Web-based UI is easy to learn
  • HTTP API enables integration with automation test systems and other equipment
  • Stateful modeling provides accurate emulation of network elements


HTTP Versions

  • HTTP/1.1
  • HTTPS/1.1
  • HTTP/2.0
  • HTTPS/2.0

HTTP Verbs

  • PUT
  • POST
  • GET
  • HEAD

HTTP roles

  • Server
  • Client


  • application/json
  • application/xml
  • application/x-www-form-urlencoded
  • application/octet-stream
  • multipart/form-data
  • multipart/related
  • text/plain
  • text/html
  • chunked
  • custom

Related Video

  • Check content correctness
  • Check load capabilities
  • Generate valid and invalid/negative messages and call-scenarios
  • Supports sending invalid responses including malformed, dropped and mis-ordered packets
  • Security testing

Additional Videos



  • Request latency
Configurable Parameters
  • Concurrent calls/endpoints

Automation API

User commands can be fully automated using REST API. This includes performing all test control functions as well as collecting results and metrics. It can be integrated into virtually any CI system via the HTTP API, including Jenkins, CircleCI, Gitlab and others. Includes Autom8 Python framework.


The application’s subsystems can be edited directly in the browser using TDL. The Message Workshop allows for the creation of test scenarios directly from the hex stream of a remote capture, while the Composer graphical editor (being deployed for all products in 2021) will allow for creating customized call scenarios by dragging and dropping the call flow to meet your test needs.
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REST Feature Tester

Use Cases

AMF Under Test

For testing the AMF, the 5G SA Network Emulator can wrap around the node using the N1, N2, N8, N11, N12 & N22 interfaces. Traffic can be originated from real or emulated UE and IoT devices

Supported Scenarios:

• General Registration

• Registration with AMFre-allocation

• UE-initiated Deregistration

• Network-initiated Deregistration

• UE Triggered Service Request

• Network Triggered Service Request

• UE Configuration Update procedure for access and mobility management related parameters    

• UE Configuration Update procedure for transparent UE Policy delivery

• UE Reachability Notification Request procedure

• UE Activity Notification procedure    

• AN Release

REST Feature Tester
REST Feature Tester

Summary of Specifications

The Valid8 REST Feature Tester is capable of simulating multiple nodes and generating large scale stateful REST traffic


Hypertext Transfer Protocol  HTTP/1.1 RFC 2616

Hypertext Transfer Protocol Version 2 (HTTP/2) RFC 7540

Product Details

REST Feature Tester

Valid8 exports its products strictly in accordance with all US Export Control laws and regulations which shall apply to any purchase or order. Specifications are subject to change without notice.

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