Show challenge when requested by server

ts/textsecure/Errors.ts

@@ -4,6 +4,8 @@
 /* eslint-disable @typescript-eslint/no-explicit-any */
 /* eslint-disable max-classes-per-file */
 
+import { parseRetryAfter } from '../util/parseRetryAfter';
+
 function appendStack(newError: Error, originalError: Error) {
   // eslint-disable-next-line no-param-reassign
   newError.stack += `\nOriginal stack:\n${originalError.stack}`;
@@ -104,6 +106,37 @@ export class SendMessageNetworkError extends ReplayableError {
   }
 }
 
+export type SendMessageChallengeData = {
+  readonly token?: string;
+  readonly options?: ReadonlyArray<string>;
+};
+
+export class SendMessageChallengeError extends ReplayableError {
+  public identifier: string;
+
+  public readonly data: SendMessageChallengeData | undefined;
+
+  public readonly retryAfter: number;
+
+  constructor(identifier: string, httpError: Error) {
+    super({
+      name: 'SendMessageChallengeError',
+      message: httpError.message,
+    });
+
+    [this.identifier] = identifier.split('.');
+    this.code = httpError.code;
+    this.data = httpError.response;
+
+    const headers = httpError.responseHeaders || {};
+
+    this.retryAfter =
+      Date.now() + parseRetryAfter(headers['retry-after'].toString());
+
+    appendStack(this, httpError);
+  }
+}
+
 export class SignedPreKeyRotationError extends ReplayableError {
   constructor() {
     super({