NScurl (NSIS plugin)

NScurl is a NSIS (Nullsoft Scriptable Install System) plugin with advanced HTTP/HTTPS capabilities.
It's implemented on top of libcurl with OpenSSL as SSL backend.
This plugin is included in my unofficial NSIS builds.

Features:

• Modern: supports modern SSL protocols and cyphers including HTTPS/2, TLS1.3, etc.
• Compatible: works well on Windows NT4, Windows 10 and everything in between
• Multi-threaded: download/upload multiple files in parallel
• Asynchronous: start multiple background transfers, check on them later
• Insistent: multiple attempts to connect and resume interrupted transfers
• NSIS aware: download files at any installation stage (from .onInit, from Sections, from custom pages, silent installers, etc)
• Verbose: plenty of useful information is available for querying (transfer size, speed, HTTP status, HTTP headers, etc)
• Supports HTTP and TLS authentication
• Supports all relevant HTTP methods (GET, POST, HEAD, etc)
• Supports DNS-over-HTTPS name resolution
• Supports custom HTTP headers and data
• Supports proxy servers (both authenticated and open)
• Supports files larger than 4GB
• Can download remote content to RAM instead of a file
• Works well in 64-bit NSIS builds
• A lot more... Check out the included documentation

Basic usage:

• Check out the Getting Started wiki page
• Quick transfer:

NScurl::http GET "http://live.sysinternals.com/Files/SysinternalsSuite.zip" "$TEMP\SysinternalsSuite.zip" /CANCEL /RESUME /END
Pop $0 ; Status text ("OK" for success)

• Quick transfer (custom GET parameters + custom request headers):

NScurl::http GET "https://httpbin.org/get?param1=value1&param2=value2" "$TEMP\httpbin_get.json" /HEADER "Header1: Value1" /HEADER "Header2: Value2" /END
Pop $0

• POST a .json file

NScurl::http POST "https://httpbin.org/post" MEMORY /HEADER "Content-Type: application/json" /DATA '{ "number_of_the_beast" : 666 }' /END
Pop $0

• POST a .json file (as MIME multi-part form)

NScurl::http POST "https://httpbin.org/post" Memory /POST "User" "My user name" /POST "Password" "My password" /POST FILENAME=maiden.json TYPE=application/json "Details" '{ "number_of_the_beast" : 666 }' /END
Pop $0

• More complex examples in the documentation

Licenses:

Project	License
This project itself	BSD3
libcurl	MIT/X inspired
OpenSSL	Dual License
nghttp2	MIT
zlib	zlib