net: Treat SSL handshake errors differently from other hyper errors.

components/net_traits/lib.rs

@@ -712,12 +712,17 @@ pub enum NetworkError {
     Internal(String),
     LoadCancelled,
     /// SSL validation error that has to be handled in the HTML parser
-    SslValidation(ServoUrl, String),
+    SslValidation(String),
 }
 
 impl NetworkError {
     pub fn from_hyper_error(error: &HyperError) -> Self {
-        NetworkError::Internal(error.to_string())
+        let s = error.to_string();
+        if s.contains("the handshake failed") {
+            NetworkError::SslValidation(s)
+        } else {
+            NetworkError::Internal(s)
+        }
     }
 
     pub fn from_http_error(error: &HttpError) -> Self {

components/script/dom/servoparser/mod.rs

@@ -731,9 +731,9 @@ impl FetchResponseListener for ParserContext {
                 FetchMetadata::Unfiltered(m) => m,
                 FetchMetadata::Filtered { unsafe_, .. } => unsafe_,
             }),
-            Err(NetworkError::SslValidation(url, reason)) => {
+            Err(NetworkError::SslValidation(reason)) => {
                 ssl_error = Some(reason);
-                let mut meta = Metadata::default(url);
+                let mut meta = Metadata::default(self.url.clone());
                 let mime: Option<Mime> = "text/html".parse().ok();
                 meta.set_content_type(mime.as_ref());
                 Some(meta)