# TakahikoKawasaki/nv-websocket-client

High-quality WebSocket client implementation in Java.

Repository: https://github.com/TakahikoKawasaki/nv-websocket-client
Canonical: https://ross.abutalabs.com/products/nv-websocket-client
Language: Java
License: Apache-2.0
License Family: permissive
Last push: 2024-01-28T14:16:55+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 4178, "days_push": 948, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2052, forks 287 (observed 2026-08-28T04:06:09.639563+00:00)

## What it is
A high-quality WebSocket client library for Java implementing RFC 6455, usable on Java SE 1.5+ and Android. It supports all frame types, fragmented frames, Basic Authentication, HTTP/secure proxies, permessage-deflate compression, and a rich listener interface.

## Use cases
- connect to a websocket server from a java application
- use websockets on android
- send and receive binary and text websocket frames
- connect through an http proxy to a secure websocket
- enable permessage-deflate compression for websockets
- hook websocket lifecycle events with listeners

## When to choose
- you need a dependency-light, pure-Java WebSocket client
- you target Android or older Java SE versions
- you need fine-grained control over frames, sockets, and error codes

## When to avoid
- you need a WebSocket server, not just a client
- you are on Spring or Jakarta EE and prefer container-provided WebSocket APIs
- you need actively developed features beyond maintenance releases

## Facets
- artifact type: library
- maturity: maintenance
- function: websocket, http-client, middleware
- domain: web-development, backend, developer-tools
- platform: jvm, cross-platform
- tags: rfc-6455, websocket-client, permessage-deflate, java-se, listener-api, proxy-support, android

## Member repositories
- TakahikoKawasaki/nv-websocket-client (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:09.639563+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 2026-08-30T02:57:21.119723+00:00, confidence not recorded.
  - readme: https://github.com/TakahikoKawasaki/nv-websocket-client (fetched 2026-08-28T04:06:09.639563+00:00, sha 6e6cc393f8ad)
- Data as of 2026-08-30T08:39:29.467469+00:00.