Question 1

How do I capture packets from a specific network interface with SharpPcap?

Accepted Answer

Use CaptureDeviceList.Instance to enumerate devices, select the interface, open it with device.Open(), and handle the OnPacketArrival event. Example code in the README shows listing devices and starting capture.

Question 2

Can SharpPcap be used with .NET Core or .NET 5+?

Accepted Answer

Yes, SharpPcap supports .NET Core 3 and .NET Framework, making it compatible with modern .NET versions including .NET 5 and above for cross-platform development, as confirmed in the features section.

Question 3

SharpPcap vs Pcap.Net: which is better for .NET projects?

Accepted Answer

SharpPcap is more actively maintained and offers cross-platform support with performance optimizations like ReadOnlySpan<>, while Pcap.Net might be older or less updated; choose based on your platform needs and feature set.

Question 4

How to apply a BPF filter to capture only HTTP traffic with SharpPcap?

Accepted Answer

After opening a device, set the Filter property to a BPF string like 'tcp port 80'. SharpPcap supports standard Berkeley Packet Filters for selective capture, as mentioned in the features.

Question 5

Does SharpPcap support async/await for packet capture?

Accepted Answer

The primary API uses event-based capture with OnPacketArrival; for async operations, you can wrap the capture in tasks, but native async support is limited, so refer to community examples or adapt the synchronous patterns.

Question 6

How to handle errors when a native library fails to load in SharpPcap?

Accepted Answer

SharpPcap uses NativeLibrary for resolution, and errors may throw exceptions. Ensure native libraries are installed correctly and handle exceptions in your code, checking platform-specific notes in the README for troubleshooting.

SharpPcap

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