fix: allow x-forwarder-for with ports

Author: lajp

src/key_extractor.rs

@@ -131,7 +131,10 @@ fn maybe_x_forwarded_for(headers: &HeaderMap) -> Option<IpAddr> {
     headers
         .get(X_FORWARDED_FOR)
         .and_then(|hv| hv.to_str().ok())
-        .and_then(|s| s.split(',').find_map(|s| s.trim().parse::<IpAddr>().ok()))
+        .and_then(|s| {
+            s.split(',')
+                .find_map(|s| s.trim().split(':').next()?.parse::<IpAddr>().ok())
+        })
 }
 
 /// Tries to parse the `x-real-ip` header