feat(manager): enable servers with valid domains

src/server_manager/electron_app/index.ts

@@ -193,6 +193,8 @@ function main() {
   // prevent window being garbage collected
   let mainWindow: Electron.BrowserWindow;
 
+  app.userAgentFallback = `OutlineManager/${electron.app.getVersion()} ${app.userAgentFallback}`;
+
   // Mark secure to avoid mixed content warnings when loading DigitalOcean pages via https://.
   electron.protocol.registerSchemesAsPrivileged([
     {scheme: 'outline', privileges: {standard: true, secure: true}},

src/server_manager/model/server.ts

@@ -103,7 +103,7 @@ export interface Server {
 // Manual servers are servers which the user has independently setup to run
 // shadowbox, and can be on any cloud provider.
 export interface ManualServer extends Server {
-  getCertificateFingerprint(): string;
+  getCertificateFingerprint(): string | undefined;
 
   forget(): void;
 }
@@ -159,7 +159,7 @@ export class MonetaryCost {
 // shadowbox.
 export interface ManualServerConfig {
   apiUrl: string;
-  certSha256: string;
+  certSha256?: string;
 }
 
 // Repository of ManualServer objects.  These are servers the user has setup

src/server_manager/web_app/management_urls.ts

@@ -38,9 +38,6 @@ export function parseManualServerConfig(userInput: string): ManualServerConfig {
   if (!config.apiUrl) {
     throw new Error('no apiUrl field');
   }
-  if (!config.certSha256) {
-    throw new Error('no certSha256 field');
-  }
 
   return config;
 }

src/server_manager/web_app/manual_server.ts

@@ -25,7 +25,7 @@ class ManualServer extends ShadowboxServer implements server.ManualServer {
     private forgetCallback: Function
   ) {
     super(id);
-    const fingerprint = hexToString(manualServerConfig.certSha256);
+    const fingerprint = hexToString(manualServerConfig.certSha256 || '');
     this.setManagementApi(makePathApiClient(manualServerConfig.apiUrl, fingerprint));
   }
 

src/server_manager/web_app/ui_components/app-root.ts

@@ -927,8 +927,6 @@ export class AppRoot extends polymerElementWithLocalize {
       const manualEntry = this.$.manualEntry as OutlineManualServerEntry;
       if (clickedButtonIndex === 1) {
         manualEntry.retryTapped();
-      } else {
-        manualEntry.cancelTapped();
       }
     });
   }