BornToBeRoot/PowerShell_IPv4PortScanner

[Feature Request] Catch Exception from calling EndInvoke and recommend/dynamically reducing Threads

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#5 opened on Aug 9, 2024

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Description

This is a feature request to add dynamic Thread reduction when EndInvoke function causes any kind of exception. Otherwise, exit early with a message to recommend for the -Threads parameter to be used.

Specifically this error that I ran into because the default 500 threads is too high for my virtual lab:

Exception calling "EndInvoke" with "1" argument(s): "Thread failed to start."
At C:\temp\IPv4PortScan.ps1:260 char:13
+             $Job_Result = $Job.Pipe.EndInvoke($Job.Result)
+             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [], MethodInvocationException
    + FullyQualifiedErrorId : ThreadStartException
 
Exception calling "EndInvoke" with "1" argument(s): "Thread is running or terminated; it cannot restart."

Contributor guide

Research direction
Investigate the EndInvoke exception for ThreadStartException and implement dynamic thread reduction based on available system resources.
Tech stack
shell
Domain
backend
Issue type
Feature
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
PowerShell scriptingRunspaces
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60