fix: read proxy when downloading resources (#49)

Port of tauri-apps/tauri#8012

Co-authored-by: Caijinglong <[email protected]>

.changes/http_proxy.md

@@ -0,0 +1,5 @@
+---
+"cargo-packager": patch
+---
+
+Read `HTTP_PROXY` env var when downloading resources.

crates/packager/src/util.rs

@@ -130,7 +130,8 @@ pub fn target_triple() -> crate::Result<String> {
 
 pub(crate) fn download(url: &str) -> crate::Result<Vec<u8>> {
     tracing::info!("Downloading {}", url);
-    let response = ureq::get(url).call().map_err(Box::new)?;
+    let agent = ureq::AgentBuilder::new().try_proxy_from_env(true).build();
+    let response = agent.get(url).call().map_err(Box::new)?;
     let mut bytes = Vec::new();
     response.into_reader().read_to_end(&mut bytes)?;
     Ok(bytes)