httpuv: HTTP and WebSocket Server Library

Provides low-level socket and protocol support for handling HTTP and WebSocket requests directly from within R. It is primarily intended as a building block for other packages, rather than making it particularly easy to create complete web applications using httpuv alone. httpuv is built on top of the libuv and http-parser C libraries, both of which were developed by Joyent, Inc. (See LICENSE file for libuv and http-parser license information.)

Version:	1.6.17
Depends:	R (≥ 2.15.1)
Imports:	later (≥ 0.8.0), promises, R6, Rcpp (≥ 1.0.7), utils
LinkingTo:	later, Rcpp
Suggests:	callr, curl, jsonlite, testthat (≥ 3.0.0), websocket
Published:	2026-03-18
DOI:	10.32614/CRAN.package.httpuv
Author:	Joe Cheng [aut], Winston Chang [aut, cre], Posit, PBC [cph, fnd], Hector Corrada Bravo [ctb], Jeroen Ooms [ctb], Andrzej Krzemienski [cph] (optional.hpp), libuv project contributors [cph] (libuv library, see src/libuv/AUTHORS file), Joyent, Inc. and other Node contributors [cph] (libuv library, see src/libuv/AUTHORS file; and http-parser library, see src/http-parser/AUTHORS file), Niels Provos [cph] (libuv subcomponent: tree.h), Internet Systems Consortium, Inc. [cph] (libuv subcomponent: inet_pton and inet_ntop, contained in src/libuv/src/inet.c), Alexander Chemeris [cph] (libuv subcomponent: stdint-msvc2008.h (from msinttypes)), Google, Inc. [cph] (libuv subcomponent: pthread-fixes.c), Sony Mobile Communcations AB [cph] (libuv subcomponent: pthread-fixes.c), Berkeley Software Design Inc. [cph] (libuv subcomponent: android-ifaddrs.h, android-ifaddrs.c), Kenneth MacKay [cph] (libuv subcomponent: android-ifaddrs.h, android-ifaddrs.c), Emergya (Cloud4all, FP7/2007-2013, grant agreement no 289016) [cph] (libuv subcomponent: android-ifaddrs.h, android-ifaddrs.c), Steve Reid [aut] (SHA-1 implementation), James Brown [aut] (SHA-1 implementation), Bob Trower [aut] (base64 implementation), Alexander Peslyak [aut] (MD5 implementation), Trantor Standard Systems [cph] (base64 implementation), Igor Sysoev [cph] (http-parser)
Maintainer:	Winston Chang <winston at posit.co>
BugReports:	https://github.com/rstudio/httpuv/issues
License:	GPL-2 | GPL-3 | file LICENSE [expanded from: GPL (≥ 2) | file LICENSE]
URL:	https://rstudio.github.io/httpuv/, https://github.com/rstudio/httpuv
NeedsCompilation:	yes
SystemRequirements:	GNU make, zlib
Materials:	README, NEWS
In views:	ModelDeployment, WebTechnologies
CRAN checks:	httpuv results

Documentation:

Reference manual:

httpuv.html , httpuv.pdf

Downloads:

Package source:	httpuv_1.6.17.tar.gz
Windows binaries:	r-devel: httpuv_1.6.17.zip, r-release: httpuv_1.6.16.zip, r-oldrel: httpuv_1.6.17.zip
macOS binaries:	r-release (arm64): httpuv_1.6.16.tgz, r-oldrel (arm64): httpuv_1.6.17.tgz, r-release (x86_64): httpuv_1.6.16.tgz, r-oldrel (x86_64): httpuv_1.6.17.tgz
Old sources:	httpuv archive

Reverse dependencies:

Reverse depends:	BrowserViz, Rfacebook, Rlinkedin, webdeveloper, webglobe
Reverse imports:	ambiorix, animate, bea.R, beakr, biobtreeR, blogdown, BrownDog, bs4Dash, cookies, emuR, epivizrServer, fiery, ggfigdone, igvR, JBrowseR, jrc, ladder, mcptools, mlflow, opencpu, pagedown, phantasus, plotscaper, plumber, plumbertableau, RCyjs, servr, shiny, shinylight, shinyloadtest, shinytest, sleepwalk, spectrino, SurprisalAnalysis, telegram.bot, tfdeploy, tinyshinyserver, vitals, VOSONDash, webdav, workflowr
Reverse suggests:	azr, AzureAuth, AzureRMR, curl, datacommons, DT, firestorm, gaawr2, gargle, golem, googleVis, httr, httr2, learnr, meetupr, osmapiR, ravecore, rorcid, shinylive, snowflakeauth, sship, tidyllm, tricolore, Ularcirc, urlshorteneR, vetiver, vkR, webfakes, webshot, webshot2, websocket, webutils

Linking:

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