rs / rs/node-netmask

Create a netmask from an IP range

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enhancement
Dominant language
TypeScript
Stars
253
Forks
43
PR merge metrics
No merged PRs in 30d

Description

This is an awesome module for creating IP ranges from a given netmask, but it'd be even better if it worked in reverse, eg:

coffee> n = new netmask.Netmask('10.0.0.0/24')
{ bitmask: 24,
maskLong: 4294967040,
netLong: 167772160,
size: 256,
base: '10.0.0.0',
mask: '255.255.255.0',
hostmask: '0.0.0.255',
first: '10.0.0.1',
last: '10.0.0.254',
broadcast: '10.0.0.255' }

coffee> n = new netmask.Netmask('10.0.0.1', '10.0.0.254')
{ bitmask: 24,
maskLong: 4294967040,
netLong: 167772160,
size: 256,
base: '10.0.0.0',
mask: '255.255.255.0',
hostmask: '0.0.0.255',
first: '10.0.0.1',
last: '10.0.0.254',
broadcast: '10.0.0.255' }

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the Netmask constructor and the existing netmask-based range parsing entry point. Trace how the module derives the network properties shown in the example, then define the expected behavior for constructing a Netmask from the first and last IP addresses. Done means both constructor forms produce the same displayed values for the example range.

Written by the indexing model from the issue text.

Assessment

Tech stack
typescript
Domain
networking
Issue type
Feature
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
45/100

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