win_http

A Windows HTTP client for package:http using the native WinHTTP API. Provides system proxy support, Schannel TLS, and automatic decompression. Requires Windows 8.1+.

0.2.2 6.9K downloads/mo #3432 most downloaded on pub.dev edde746/win_http

What this package is like to depend on

Last release 1 months ago

04 Jul 2026

Ships on a steady schedule

a new release about every 6 weeks

Nearly every release is documented

notes for 4 of 4 stable releases

Nothing withdrawn

no release was ever pulled

4 months old

4 releases · first in 2026

4 releases in the last 12 months

see the full history below

Release timeline

4 releases · Apr 2026 to Jul 2026

Release Pre-release

Releases

latest 4

0.2.2 04 Jul 2026
Release notes
- Enabled WINHTTP_OPTION_IPV6_FAST_FALLBACK (Happy Eyeballs) on the session so dual-stack hosts with an unreachable IPv6 route fall back to IPv4 within milliseconds instead of stalling until the IPv6 connect times out (Windows 10 2004+, silent fallback on older versions).
Open source →
0.2.1 25 May 2026
Release notes
- Fixed async request error reporting so WinHTTP-owned callback pointers are not read after NativeCallable.listener dispatch.
- Request failures now report safe inferred DNS, connection, response, and TLS messages instead of bogus native error codes from stale callback memory.
Open source →
0.2.0 08 Apr 2026
Release notes
- Breaking: Migrated from sync WinHTTP + isolates to async WinHTTP callbacks. No public API changes, but internal architecture is completely different.
- Abort support via WinHttpCloseHandle (native cancellation).
- HTTP/2 enabled by default (Windows 10+, silent fallback).
- Added maxConnectionsPerServer to WinHttpClientConfiguration.
- Eliminated per-request isolate spawning overhead.
- 64KB read buffer for better throughput.
Open source →
0.1.0 07 Apr 2026
Release notes
- Initial release.
- WinHttpClient implementing package:http BaseClient via WinHTTP FFI.
- Automatic proxy detection (WINHTTP_ACCESS_TYPE_AUTOMATIC_PROXY).
- Configurable timeouts, user agent, and proxy settings.
- Automatic gzip/deflate decompression (Windows 8.1+).
- Response body streaming via isolate workers.
- Passes http_client_conformance_tests suite (172/172 non-skipped tests).
Open source →

win_http

What this package is like to depend on

Release timeline

Releases

Every package, every release, already written down.