Added retry for getting content-length

Cargo.toml

@@ -16,3 +16,4 @@ indicatif = "0.17.3"
 futures-util = "0.3.28"
 tar = "0.4.38"
 flate2 = "1.0.26"
+async-recursion = "1.0.4"

src/installer.rs

@@ -22,6 +22,7 @@ use reqwest::{
 };
 use futures_util::StreamExt;
 use clap::ValueEnum;
+use async_recursion::async_recursion;
 
 use crate::types::GitHubReleases;
 
@@ -58,18 +59,25 @@ impl ServerTrait for Servers {
 }
 
 // Downloads a file
+#[async_recursion]
 pub async fn download_file(client: &Client, url: &str) -> Result<Vec<u8>, String> {
     // Initialise the request
     let response = client
         .get(url)
         .send()
         .await
         .expect(&format!("Failed to GET from '{}'", &url));
-    let total_size = response
-        .content_length()
-        .expect(&format!("Failed to get content length from '{}'", &url));
+    let total_size_r = response
+        .content_length();
+
+    // Check we got the size
+    if total_size_r.is_none() {
+        println!("failed to get content-length of {}, retrying...", url);
+        return download_file(client, url).await;
+    }
 
     // Indicatif setup
+    let total_size = total_size_r.unwrap();
     let pb = ProgressBar::new(total_size);
     pb.set_style(
         ProgressStyle::default_bar()