`ensureUrl` failure (potentially due to corporate proxy usage)

Current behaviour:

Cypress could not verify that the server set as your 'baseUrl' is running:

  > https://example.com

Your tests likely make requests to this 'baseUrl' and these tests will fail if you don't boot your server.

Desired behavior:

Tests run after successful ensureUrl check

How to reproduce:

Run tests over proxy.

Or this might be to do with the fact our baseURL serves 403 responses - which is normal behaviour for us. Our tests query sub-urls, which return 200 responses. This theory is inconsistent with the http://example.com call failing the ensureUrl check.

Our hunch is that node’s net.connect method, used in the ensureUrl check isn’t respecting proxy settings. https://github.com/cypress-io/cypress/blob/master/packages/server/lib/util/connect.coffee#L10

Additional Info (images, stack traces, etc)

We are able to run via the Cypress UI, but with a warning message in the UI.

When I commented out the following ensureURL check, tests were able to run.

  _this._server.on("upgrade", onUpgrade);
          _this._server.once("error", onError);
          return _this._listen(port, onError).then(function(port) {
            return Promise.all([
              httpsProxy.create(appData.path("proxy"), port, {
                onRequest: callListeners,
                onUpgrade: onSniUpgrade
              }), fileServer.create(fileServerFolder)
            ]).spread(function(httpsProxy, fileServer) {
              _this._httpsProxy = httpsProxy;
              _this._fileServer = fileServer;
              _this._baseUrl = baseUrl;
              // if (baseUrl) {
              //   return connect.ensureUrl(baseUrl)["return"](null)["catch"](function(err) {
              //     if (config.isTextTerminal) {
              //       return reject(errors.get("CANNOT_CONNECT_BASE_URL", baseUrl));
              //     } else {
              //       return errors.get("CANNOT_CONNECT_BASE_URL_WARNING", baseUrl);
              //     }
              //   });
              // }
            }).then(function(warning) {
              _this._onDomainSet(baseUrl != null ? baseUrl : "<root>");
              return resolve([port, warning]);
            });
          });
        };
      })(this));

• Operating System: RHEL7
• Cypress Version: 1.4.2
• Browser Version: Chome 60
• Node Version: 8.8.0

[brian-mann]

This is correct, net.connect does not respect proxies. We’ll need to switch to using a regular HTTP request when net.connect fails or when proxies are set.

[jennifer-shehane]

This issue is still pending release - as indicated by this comment https://github.com/cypress-io/cypress/issues/1541#issuecomment-478424507 and the label of stage: pending release.

This is not part of 3.2.0. We will comment on this issue as soon as it is released.