isInvalidHttpEndpoint added to HttpProvider for a better readability

web3 · Feb 26, 2019 · bed7b7e · bed7b7e
1 parent 46f3017
commit bed7b7e
Showing 1 changed file with 14 additions and 1 deletion.
diff --git a/packages/web3-providers/src/providers/HttpProvider.js b/packages/web3-providers/src/providers/HttpProvider.js
@@ -153,7 +153,7 @@ export default class HttpProvider {
                         }
                     }
 
-                    if (request.response === null && request.status === 0) {
+                    if (this.isInvalidHttpEndpoint(request)) {
                         reject(new Error(`Connection refused or URL couldn't be resolved: ${this.host}`));
                     }
                 }
@@ -176,4 +176,17 @@ export default class HttpProvider {
             }
         });
     }
+
+    /**
+     * Checks if the error `net::ERR_NAME_NOT_RESOLVED` or `net::ERR_CONNECTION_REFUSED` will appear.
+     * 
+     * @method isInvalidHttpEndpoint
+     *
+     * @param {Object} request
+     *
+     * @returns {Boolean}
+     */
+    isInvalidHttpEndpoint(request) {
+        return request.response === null && request.status === 0;
+    }
 }