bug: port exhaustion in TCP scanner #1026

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opened 2026-03-28 04:30:57 +00:00 by mfreeman451 · 0 comments

mfreeman451 commented

2026-03-28 04:30:57 +00:00

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Imported from GitHub.

Original GitHub issue: #2828
Original author: @mfreeman451
Original URL: https://github.com/carverauto/serviceradar/issues/2828
Original created: 2026-02-13T18:18:17Z

Describe the bug
https://demo.serviceradar.cloud/settings/networks

the 'demo' sweeper profile is configured with more hosts than the other profiles, but really not that many (1k~). In production we will see 20-50k, I'm concerned that we're seeing so many port exhaustion events here.

Scanner Metrics
Packets Sent
1,646,799
Packets Received
2,203
Packets Dropped
142,050
RX Drop Rate
6448.03%
Retries
130/1,308,608
Rate Limit Deferrals
485,495
Port Exhaustion Events
191

To Reproduce
Steps to reproduce the behavior:

Go to '...'
Click on '....'
Scroll down to '....'
See error

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
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Desktop (please complete the following information):

OS: [e.g. iOS]
Browser [e.g. chrome, safari]
Version [e.g. 22]

Smartphone (please complete the following information):

Device: [e.g. iPhone6]
OS: [e.g. iOS8.1]
Browser [e.g. stock browser, safari]
Version [e.g. 22]

Additional context
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Imported from GitHub. Original GitHub issue: #2828 Original author: @mfreeman451 Original URL: https://github.com/carverauto/serviceradar/issues/2828 Original created: 2026-02-13T18:18:17Z --- **Describe the bug** https://demo.serviceradar.cloud/settings/networks the 'demo' sweeper profile is configured with more hosts than the other profiles, but really not that many (1k~). In production we will see 20-50k, I'm concerned that we're seeing so many port exhaustion events here. ``` Scanner Metrics Packets Sent 1,646,799 Packets Received 2,203 Packets Dropped 142,050 RX Drop Rate 6448.03% Retries 130/1,308,608 Rate Limit Deferrals 485,495 Port Exhaustion Events 191 ``` <img width="1115" height="413" alt="Image" src="https://github.com/user-attachments/assets/bf0e818b-759d-46a6-808a-7e70c1532fc4" /> **To Reproduce** Steps to reproduce the behavior: 1. Go to '...' 2. Click on '....' 3. Scroll down to '....' 4. See error **Expected behavior** A clear and concise description of what you expected to happen. **Screenshots** If applicable, add screenshots to help explain your problem. **Desktop (please complete the following information):** - OS: [e.g. iOS] - Browser [e.g. chrome, safari] - Version [e.g. 22] **Smartphone (please complete the following information):** - Device: [e.g. iPhone6] - OS: [e.g. iOS8.1] - Browser [e.g. stock browser, safari] - Version [e.g. 22] **Additional context** Add any other context about the problem here.