How do I install Netling on Linux?

Install the .NET 7 SDK, then use the console client or integrate Netling.Core into your project. Note that the WPF GUI is Windows-only, so on Linux, stick to the console or library options.

Does Netling support testing HTTPS endpoints?

Yes, both SocketWorker and HttpClientWorker handle HTTPS via SSL/TLS. Ensure your system certificates are configured correctly, especially for socket-based tests which rely on keep-alive.

Netling vs JMeter: which is better for load testing?

Netling excels in speed and low resource usage for .NET environments, with socket-based performance. JMeter offers a richer GUI, more protocols, and plugins, but is heavier. Choose Netling for .NET integration and efficiency, JMeter for broader features.

How can I add custom request headers in Netling?

The README advises forking the source code to tweak it. There's no built-in GUI for this; you need to modify the Netling.Core library or worker classes directly to implement custom headers.

Is Netling suitable for API load testing?

Yes, it's designed for web application and API testing with support for HTTP/HTTPS requests. Customize requests via code to simulate specific API endpoints and data payloads.

What happens if I run Netling on a machine with limited RAM?

Netling is optimized for low memory usage, so it should perform well. However, for very high concurrency, monitor resource consumption, as socket connections might still accumulate overhead.

Open-Awesome

Netling

MITC#untagged-f7e606f387b744ec9cdc

A high-performance .NET load testing client for web applications with minimal resource usage.

GitHub

1.3k stars206 forks0 contributors

What is Netling?

Netling is a load testing client built for web application performance testing. It allows developers to simulate concurrent user traffic to measure response times, throughput, and system behavior under stress. The tool is designed to be extremely fast while consuming minimal CPU and memory resources.

Target Audience

Developers and QA engineers who need to performance-test web applications, APIs, or services, particularly those working in .NET environments.

Value Proposition

Netling offers a combination of high-speed socket-based testing and flexible HttpClient-based approaches, with options for GUI, console, or library integration, all while maintaining low resource overhead.

Overview

Netling is a load tester client for easy web testing.

Use Cases

Best For

Performance testing web APIs under high concurrent loads
Stress testing web applications to identify bottlenecks
Load testing with custom HTTP headers and request data
Integrating load testing into automated .NET workflows
Comparing performance between socket-based and HttpClient-based requests
Running efficient load tests on resource-constrained machines

Not Ideal For

Teams needing distributed load testing across multiple machines without manual orchestration
Projects requiring built-in support for non-HTTP protocols like WebSockets or gRPC
Users who prefer a no-code, fully GUI-driven tool with extensive pre-built test scenarios and reporting
Organizations not using .NET 7 or later, as it's a strict dependency

Pros & Cons

Pros

High-Speed Socket Testing

Uses raw sockets for maximum performance, as described in the SocketWorker section, making it extremely fast for simulating high concurrent loads.

Low Resource Usage

Engineered to consume minimal CPU and memory, explicitly highlighted in the README as a key design advantage for efficient testing.

Flexible Client Options

Offers WPF, console, and core library interfaces, providing versatility for GUI interaction, scripting, or custom integration, as noted in the usage section.

Customizable and Extensible

Encourages forking and tweaking for custom headers and data, allowing deep adaptation to specific testing needs, though this requires code changes.

Cons

Keep-Alive Requirement

SocketWorker mandates keep-alive connections; using 'Connection: Close' causes errors, limiting compatibility with servers that don't support persistent connections.

.NET 7 Dependency

Tied to .NET 7 and later, excluding environments with older .NET versions or teams using different technology stacks, as stated in the requirements.

Minimal Out-of-the-Box Features

Lacks advanced capabilities like built-in reporting, scripting, or protocol diversity, requiring manual effort for complex test scenarios beyond basic HTTP requests.

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