Capture DNS errors as well

README.md

@@ -58,6 +58,10 @@ This error type correctly inherits from `Error`, and can be used with `instanceo
 
 ## Changelog
 
+### 1.0.2 (August 31, 2019)
+
+- DNS errors now also result in a `LookupFailed` error, like they should.
+
 ### 1.0.1 (August 30, 2019)
 
 - Added input validation with an informative error to the `discover` method.

index.js

@@ -60,6 +60,8 @@ function validateHomeserverUrl(homeserverUrl) {
 		throwLookupError("homeserver returned invalid JSON, maybe it is not a Matrix server?");
 	}).catch(ValidationError, (_error) => {
 		throwLookupError("homeserver returned an invalid version response, maybe it is not a Matrix server?");
+	}).catch({ code: "ENOTFOUND" }, () => {
+		throwLookupError("hostname of homeserver does not exist");
 	});
 }
 
@@ -150,6 +152,8 @@ function attemptWellKnown(host) {
 		}
 	}).catch(getJson.ParsingFailed, (_error) => {
 		throwLookupError("host returned invalid JSON");
+	}).catch({ code: "ENOTFOUND" }, () => {
+		throwLookupError("hostname does not exist");
 	});
 }