# unpbook/unpv13e

UNIX Network Programming, Volume 1, Third Edition Source Code

Repository: https://github.com/unpbook/unpv13e
Canonical: https://ross.abutalabs.com/products/unpv13e
Language: C
License: NOASSERTION
License Family: other
Last push: 2025-08-20T13:31:56+00:00

## Health v2 (maintenance only)
Score: 49/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 37, release rhythm 35, longevity 100
- inputs: {"age_days": 4265, "days_push": 378, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1330, forks 539 (observed 2026-08-28T04:04:24.026145+00:00)

## What it is
The official companion source code for 'UNIX Network Programming, Volume 1, Third Edition' by W. Richard Stevens, written in C. It contains example programs and a support library (libunp.a) demonstrating sockets, TCP/IP, and other UNIX networking APIs.

## Use cases
- learn socket programming in C
- study TCP/IP client and server examples
- build the daytimetcp client/server examples from the book
- reference implementations of UNIX networking APIs
- follow along with UNIX Network Programming exercises

## When to choose
- you are reading the book and want its example code
- you want classic, well-regarded C socket programming examples
- you are teaching or learning low-level network programming on UNIX-like systems

## When to avoid
- you need a production networking library rather than educational examples
- you want modern cross-platform abstractions or async I/O frameworks
- you need code that compiles cleanly on all modern systems without warnings

## Facets
- artifact type: learning-resource
- maturity: maintenance
- function: networking, developer-tools
- domain: networking, developer-tools, operating-systems, tutorials
- platform: bsd, c
- tags: sockets, unix-network-programming, book-source-code, tcp-ip, c-examples, linux, macos, unix

## Member repositories
- unpbook/unpv13e (main) score 49

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:24.026145+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T04:45:37.174370+00:00, confidence not recorded.
  - readme: https://github.com/unpbook/unpv13e (fetched 2026-08-28T04:04:24.026145+00:00, sha 788cb92ca08c)
- Data as of 2026-08-30T08:39:29.467469+00:00.