Please add socks5 support via the reqwest rust package

[rh314]

I've been trying to get uv to connect via a socks5 proxy. To my surprise, I could not get it working. After some digging, I see that the reqwest does support socks5, but you would need to add it explicitly to Cargo.toml as per this example.

Here is what I have tried so far (minimal code snippet that reproduces the bug):

# Set up proxy variables as per documentation
MY_SOCKS_PROXY=socks5://127.0.0.1:8080   # a proxy provided by an SSH connection
export HTTP_PROXY=$MY_SOCKS_PROXY
export HTTPS_PROXY=$MY_SOCKS_PROXY
export ALL_PROXY=$MY_SOCKS_PROXY
# then,
uv ...   # any uv command

The error messages varied depending on what I tried, but it was usually something along the lines of Caused by: error sending request for url (https://REDACTED/simple/REDACTED/)

Version:

$ uv --version
uv 0.4.0

Summary:

• Can we please add "socks" in the line that specifies reqwests in the Cargo.toml file? Or some other method to allow the use of socks-based proxies 🙏

[rh314]

For completeness' sake, I'm also going to share my current workaround.

I'm currently layering another proxy (an HTTP proxy) on top of the SOCKS5 proxy to work around this. To this end, I'm using privoxy.

Here is a snippet of my privoxy_config file:

# Listen on port 8081
listen-address  127.0.0.1:8081

# Allow CONNECT method for HTTPS traffic
enable-remote-toggle  1
enable-remote-http-toggle  1
enable-edit-actions  1

# Forward all traffic through the SOCKS5 proxy
forward-socks5 / 127.0.0.1:8080 .

# start command:
#   privoxy --no-daemon /REDACTED/privoxy_config

Then I just set the *PROXY* env variables to use port 8081.

[rh314]

Thanks!