The fastest URL transfer library for Node.js.
libcurl bindings for Node.js. libcurl official description:
libcurl is a free and easy-to-use client-side URL transfer library, supporting DICT, FILE, FTP, FTPS, Gopher, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, POP3, POP3S, RTMP, RTSP, SCP, SFTP, SMTP, SMTPS, Telnet and TFTP. libcurl supports SSL certificates, HTTP POST, HTTP PUT, FTP uploading, HTTP form based upload, proxies, cookies, user+password authentication (Basic, Digest, NTLM, Negotiate, Kerberos), file transfer resume, http proxy tunneling and more!
- Quick Start
- Supported Libcurl Versions
- For Enterprise
- Detailed Installation
- Getting Help
- Donations / Patreon
npm i node-libcurl --save
yarn add node-libcurl
Simple Request - Async / Await
this API is experimental and is subject to changes without a major version bump
const curly = ;const statusCode data headers = await curly
const Curl = ;const curl = ;curl;curl;curl;curl;curl;
Setting HTTP headers
Pass an array of strings specifying headers
MultiPart Upload / HttpPost libcurl Option
const Curl = ;const curl = ;const close = curlclose;curl;curl;curl;curl;
For more examples check the examples folder.
The code provides Typescript type definitions, which should document most of the API.
Almost all CURL options are supported, if you pass one that is not, an error will be thrown.
For more usage examples check the examples folder.
Supported Libcurl Versions
The addon is only tested against libcurl version
7.50.0 and the latest one available.
The code itself is made to compile with any version greater than
7.32.0, any libcurl version lower than that is not supported.
node-libcurl is available as part of the Tidelift Subscription.
The maintainers of node-libcurl and thousands of other packages are working with Tidelift to deliver commercial support and maintenance for the open source dependencies you use to build your applications. Save time, reduce risk, and improve code health, while paying the maintainers of the exact dependencies you use. Learn more.
The latest version of this package has prebuilt binaries (thanks to node-pre-gyp) available for:
- node.js: Latest two versions on active LTS (see https://github.com/nodejs/Release)
- electron: Latest 3 major versions
- nw.js (node-webkit): Latest 3 major (minor for nw.js case) versions and on the following platforms:
- Linux 64 bits
- Mac OS X 64 bits
- Windows 32 and 64 bits
yarn add node-libcurl or
npm install node-libcurl should download a prebuilt binary and no compilation will be needed. However if you trying to install on
electron additional steps will be required, check their corresponding section below.
The prebuilt binary is statically built with the following library versions, features and protocols:
Version: libcurl/7.64.1 OpenSSL/1.1.0j zlib/1.2.11 brotli/1.0.7 libidn2/2.1.1 libssh2/1.8.2 nghttp2/1.34.0 Features: AsynchDNS, IDN, IPv6, Largefile, NTLM, NTLM_WB, SSL, libz, brotli, TLS-SRP, HTTP2, UnixSockets, HTTPS-proxy Protocols: dict, file, ftp, ftps, gopher, http, https, imap, imaps, ldap, ldaps, pop3, pop3s, rtsp, scp, sftp, smb, smbs, smtp, smtps, telnet, tftp
If there is no prebuilt binary available that matches your system, or if the installation fails, then you will need an environment capable of compiling Node.js addons, which means python 2.7 installed and an updated C++ compiler able to compile C++11.
If you don't want to use the prebuilt binary even if it works on your system, you can pass a flag when installing:
npm install node-libcurl --build-from-source
npm_config_build_from_source=true yarn add node-libcurl
Important Notes on Prebuilt Binaries / Direct Installation
Those notes are not important when building on Windows
The prebuilt binaries are statically linked with
zlib versions must match the version Node.js uses, this is necessary to avoid any possible issues by mixing library symbols of different versions, since Node.js also exports some of the symbols of their deps.
In case you are building the addon yourself with the libraries mentioned above, you must make sure their version is ABI compatible with the one Node.js uses, otherwise you are probably going to hit a Segmentation Fault.
If you want to build a statically linked version of the addon yourself, you need to pass the
curl_static_build=true flag when calling install.
npm install node-libcurl --build-from-source --curl_static_build=true
npm_config_build_from_source=true npm_config_curl_static_build=true yarn add node-libcurl
The build process will use
curl-config available on path, if you want to overwrite it to your own libcurl installation one, you can set the
curl_config_bin variable, like mentioned above for
And if you don't want to use
curl-config, you can pass two extra variables to control the build process:
curl_include_dirsSpace separated list of directories to search for header files
curl_librariesSpace separated list of flags to pass to the linker
The statically linked version currently does not have support for
The scripts to build Kerberos exists on the
./scripts/ci folder, but it was removed for two reasons:
- If built with Heimdal, the addon becomes too big
- If built with MIT Kerberos, the addon would be bound to their licensing terms.
Electron / NW.js
If building for a
NW.js you need to pass additional parameters to the install command.
If you do not want to use the prebuilt binary, pass the
--build-from-source flag to the install command.
NW.js (aka node-webkit)
For building from source on NW.js you first need to make sure you have nw-gyp installed globally:
yarn global add nw-gyp or
npm i -g nw-gyp
If on Windows, you also need addition steps, currently the available win_delay_load_hook.cc on
nw-gypis not working with this addon, so it's necessary to apply a patch to it. The patch can be found on
./scripts/ci/patches/win_delay_load_hook.cc.patch, and should be applied to the file on
npm_config_runtime=node-webkit npm_config_target=0.38.2 yarn add node-libcurl
npm install node-libcurl --runtime=node-webkit --target=0.38.2 --save
--target is the current version of NW.js you are using
electron (aka atom-shell)
npm_config_runtime=electron npm_config_target=$(yarn --silent electron --version) npm_config_disturl=https://atom.io/download/atom-shell yarn add node-libcurl
npm install node-libcurl --runtime=electron --target=$(yarn --silent electron --version) --disturl=https://atom.io/download/atom-shell --save
--target is the version of electron you are using, in our case, we are just using the version returned by the locally installed
You can also put those args in a .npmrc file, like so:
runtime = electrontarget = 5.0.1target_arch = x64dist_url = https://atom.io/download/atom-shell
Building on Linux
To build the addon on linux based systems you must have:
- gcc >= 4.8
- libcurl dev files
- python 2.7
If you are on a debian based system, you can get those by running:
sudo apt-get install python libcurl4-openssl-dev build-essential
If you don't want to use the libcurl version shipped with your system, since it's probably very old, you can install libcurl from source, for the addon to use that libcurl version you can use the variable mentioned above,
Building on macOS
On macOS you must have:
- macOS >= 10.12 (Sierra)
- Xcode Command Line Tools
You can check if you have Xcode Command Line Tools be running:
It should return their path, in case it returns nothing, you must install it by running:
Xcode >= 10 | macOS >= Mojave
In case you have errors installing the addon from source, and you are using macOS version >= Mojave, check if the error you are receiving is the following one:
CXX(target) Release/obj.target/node_libcurl/src/node_libcurl.o clang: error: no such file or directory: '/usr/include'
If that is the case, it's because newer versions of the Command Line Tools does not add the
/usr/include folder by default. Check Xcode 10 release notes for details.
/usr/include is now available on
$(xcrun --show-sdk-path)/usr/include. To correctly build libcurl you then need to pass that path to the
npm_config_curl_include_dirs environment variable:
npm_config_curl_include_dirs="$(xcrun --show-sdk-path)/usr/include" yarn add node-libcurl
Building on Windows
If installing using a prebuilt binary you only need to have the visual c++ 2017 runtime library.
If building from source, you must have:
Python 2.7 and the Visual Studio compiler can be installed by running:
npm install --global --production windows-build-tools
nasm can be obtained from their website, which is linked above, or using chocolatey:
Currently there is no support to use other libcurl version than the one provided by the curl-for-windows submodule (help is appreciated on adding this feature).
An important note about building the addon on Windows is that we have to do some "hacks" with the header files included by
nw-gyp. The reason for that is because as we are using a standalone version of OpenSSL, we don't want to use the OpenSSL headers provided by Node.js, which are by default added to
<nw-gyp-or-node-gyp-folder>/include/node/openssl, so what we do is that before compilation that folder is renamed to
openssl.disabled. After a successful installation the folder is renamed back to their original name, however if any error happens during compilation the folder will stay renamed until the addon is compiled successfully. More info on why that was needed and some context can be found on issue #164.
If your question is directly related to the addon or their usage, post a question on
stack-overflow and use the
Donations / Patreon
Some people have been asking if there are any means to support my work, I've created a patreon page for that: https://www.patreon.com/jonathancardoso
If you want to donate via PayPal, use the same e-mail that is available on my GitHub profile: https://github.com/JCMais
And thanks for reading till here! 😄
Originally this addon was based on the work from jiangmiao/node-curl, things have changed and most if not all code has been rewritten.