imsnif/bandwhich

Unable to detect some traffic

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#360 opened on Jan 30, 2024

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bughelp wanted

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Description

TLDR

I set up an iperf3 on a remote machine with iperf3 -s, and connected to it on my local box with iperf3 -c <ADDR>. bandwhich is able to detect the upload traffic as expected.

However, if I connect to it with iperf3 -R -c <ADDR>, so that the server is sending data to the client instead, bandwhich shows very little traffic (which I suppose is the control channel).

Screenshots

up

down

Here you can see bandwhich side-by-side with btop, which is able to detect both upload and download traffic correctly. There's obviously something wrong.

Contributor guide

Research direction
Identify why downstream traffic (server to client) is not being counted. Check the packet capture logic and how traffic direction is determined. Look for differences in handling upload vs download. Investigate the filter or counting logic for incoming packets.
Tech stack
rust
Domain
cliperformance
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
Rust
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60