zig fetch doesn't handle proxy properly?

[tisonkun]

Zig Version

0.13.0

Steps to Reproduce and Observed Behavior

I have my local proxy settings:

function proxy_on() {
    export http_proxy=http://127.0.0.1:7897
    export https_proxy=http://127.0.0.1:7897
    export HTTP_PROXY=http://127.0.0.1:7897
    export HTTPS_PROXY=http://127.0.0.1:7897
}

function proxy_off() {
    unset http_proxy https_proxy HTTP_PROXY HTTPS_PROXY
}

proxy_on

When proxy on:

$ zig fetch https://dist.apache.org/repos/dist/release/opendal/0.50.1/apache-opendal-core-0.50.1-src.tar.gz
error: bad HTTP response code: '400 Bad Request'

$ zig fetch https://codeload.github.com/apache/opendal/zip/refs/tags/v0.50.1
error: invalid HTTP response: EndOfStream

When proxy off:

$ zig fetch https://dist.apache.org/repos/dist/release/opendal/0.50.1/apache-opendal-core-0.50.1-src.tar.gz
1220ca1908d50cedbb20ec2f5aa3da356ec2a28bb7b2aed1d621f3484e382ef27f54

$ zig fetch https://codeload.github.com/apache/opendal/zip/refs/tags/v0.50.1
12201ea7b0bd1b10bcc7f777f0d5bf6c5a5e747ae696cd9c5c122709ad846ef2716f

curl can work on both proxy on and off, so I guess there is some missing proxy handle logic in zig fetch.

Expected Behavior

Since cURL can download artifacts properly, I suppose there are some improvements can be done to let zig fetch succeeds in both scenarios.

[BratishkaErik]

Possible duplicate of #19878, check if #20863 solves your problem

[wsw0108]

I have built #20863 under OpenSUSE with llvm/clang/lld build from llvm-project 18.1.8.
And I can confirm that #20863 fix proxy problem of zig fetch --save ...

[mocompute]

In case maintainers want to reproduce this locally, I was able to easily reproduce it using https://mitmproxy.org/. After configuring system to use the proxy and installing the mitm certificate, curl is able to download files via https (routed through the proxy and seen in the proxy's UI), but zig build will fail if there is a remote dependency declared in the build.zig.zon file.

[jiacai2050]

As of 2025-01-03, I create zigfetch to fix the issue, it's baked by libcurl, so it's more stable than http client in std.

[chen1195585098]

As of 2025-01-03, I create zigfetch to fix the issue, it's baked by libcurl, so it's more stable than http client in std.

Hi, @jiacai2050 , is zigfetch an independent tool? and how can I find the zigfetch？
Thanks :)

[jiacai2050]

is zigfetch an independent tool?

Yes.

You can download it from release page or build it from source.