tylertreat/comcast
Comcast
Comcast is a Linux network emulator and degradation tool used to simulate unstable or slow connections. It functions as a network impairment simulator that injects latency, packet loss, and bandwidth limits into network interfaces to verify how software handles adverse conditions.
The utility serves as a TCP and UDP traffic shaper, allowing users to restrict bandwidth and filter traffic by destination address, protocol, and port. These capabilities enable the isolation of specific traffic streams to test application resilience when particular services are degraded.
The tool provides broader simulation capabilities for network resilience testing, including the emulation of bandwidth limitations and artificial application latency. A dry-run execution mode is available to log intended system modifications to the console for verification before applying changes to the environment.
Features
- Network Testing - Simulates packet loss and latency to validate how applications behave under unstable network conditions.
- Connectivity Degradation Simulators - Simulates unstable or slow connections to verify how software handles degraded network conditions.
- Bandwidth Management - Restricts the amount of data flowing through network interfaces to test performance on slow connections.
- L4 Traffic Shapers - Restricts bandwidth and filters traffic by destination address, protocol, and port for TCP and UDP.
- Network Interface Impairments - Directs the network stack to drop or delay packets to simulate degraded connectivity.
- Traffic Control Interfaces - Manipulates kernel-level networking rules via system commands to introduce latency and packet loss.
- Artificial Latency Injection - Introduces artificial delays in network traffic to verify timeouts and retry logic in distributed systems.
- Network Emulation Tools - Provides a command-line interface for applying system-level network constraints and impairments.
- Network Resilience Simulators - Injects latency, packet loss, and bandwidth limits to test application resilience.
- Dry-Run Modes - Includes a dry-run mode to log intended system modifications without applying them to the environment.
- Traffic Filters - Controls network packets based on defined IP addresses, protocols, and port numbers.
- Targeted Traffic Constraints - Applies network constraints to specific destination addresses and ports to test degraded services.
- Chaos Engineering - Network simulation tool for injecting latency and packet loss.
- Network Programming - Simulating network connection issues.
- System Monitoring and Diagnostics - Simulate network conditions to test system resilience.
- Software Tools - Simulates network latency and packet loss.
Star history
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