fixes ensure_backend_from_url() to excract origin host name correctly

Author: ChristianPavilonis

crates/common/src/backend.rs

@@ -73,14 +73,18 @@ pub fn ensure_backend_from_url(origin_url: &str) -> Result<String, Report<Truste
     })?;
 
     let scheme = parsed_url.scheme();
-    let host = parsed_url.host_str().ok_or_else(|| {
-        Report::new(TrustedServerError::Proxy {
-            message: "Missing host in origin_url".to_string(),
+    let host = Url::parse(origin_url)
+        .ok()
+        .and_then(|url| {
+            url.host_str().map(|host| match url.port() {
+                Some(port) => format!("{}:{}", host, port),
+                None => host.to_string(),
+            })
         })
-    })?;
+        .unwrap_or_else(|| origin_url.to_string());
     let port = parsed_url.port();
 
-    ensure_origin_backend(scheme, host, port)
+    ensure_origin_backend(scheme, &host, port)
 }
 
 #[cfg(test)]