Add extraHeaders to unsubscribe

src/api/subscriber.ts

@@ -247,13 +247,13 @@ export class Subscriber extends Subscription {
         break;
       case SubscriptionDialogState.Pending:
         if (this._dialog) {
-          this._dialog.unsubscribe();
+          this._dialog.unsubscribe(options);
           // responses intentionally ignored
         }
         break;
       case SubscriptionDialogState.Active:
         if (this._dialog) {
-          this._dialog.unsubscribe();
+          this._dialog.unsubscribe(options);
           // responses intentionally ignored
         }
         break;

src/api/subscription-unsubscribe-options.ts

@@ -3,4 +3,6 @@
  * Options for {@link Subscription.unsubscribe}.
  * @public
  */
-export interface SubscriptionUnsubscribeOptions {}
+export interface SubscriptionUnsubscribeOptions {
+  extraHeaders?: Array<string>;
+}

src/core/dialogs/subscription-dialog.ts

@@ -342,9 +342,8 @@ export class SubscriptionDialog extends Dialog implements Subscription {
    * 4.1.2.3.  Unsubscribing
    * https://tools.ietf.org/html/rfc6665#section-4.1.2.3
    */
-  public unsubscribe(): OutgoingSubscribeRequest {
+  public unsubscribe(options: RequestOptions = {}): OutgoingSubscribeRequest {
     const allowHeader = "Allow: " + AllowedMethods.toString();
-    const options: RequestOptions = {};
     options.extraHeaders = (options.extraHeaders || []).slice();
     options.extraHeaders.push(allowHeader);
     options.extraHeaders.push("Event: " + this.subscriptionEvent);

src/core/subscription/subscription.ts

@@ -44,7 +44,7 @@ export interface Subscription {
    * 4.1.2.3.  Unsubscribing
    * https://tools.ietf.org/html/rfc6665#section-4.1.2.3
    */
-  unsubscribe(): OutgoingSubscribeRequest;
+  unsubscribe(options?: RequestOptions): OutgoingSubscribeRequest;
 }
 
 /**