fix fake relay detection for push.services.mozilla.com

libraries/nocap/adapters/default/WebsocketAdapterDefault/src/index.ts

@@ -100,10 +100,31 @@ class WebsocketAdapterDefault extends AbstractAdapter implements IAdapter {
         this.handle_nostr_event(data);
       });
       this.base.ws.on("close", (closeEvent: CloseEvent) => {
+        // Unexpected close during read/write after successful open means the
+        // server rejected our NIP-01 subscription → not NIP-01 compatible.
+        if (!this.base.hard_fail) {
+          const openResult = this.base.results?.get('open');
+          if ((this.base.current === 'read' || this.base.current === 'write') && openResult?.data === true) {
+            this.base.websocket_hard_fail(
+              this.notNip01Compat(`WebSocket closed with code ${closeEvent.code}: ${closeEvent.reason || 'no reason'} after ${this.base.current} check`)
+            );
+            return;
+          }
+        }
         this.base.on_close();
       });
       this.base.ws.on("error", (error: Event) => {
         this.abortController.abort();
+        // Error during read/write after successful open → server rejected NIP-01.
+        if (!this.base.hard_fail) {
+          const openResult = this.base.results?.get('open');
+          if ((this.base.current === 'read' || this.base.current === 'write') && openResult?.data === true) {
+            this.base.websocket_hard_fail(
+              this.notNip01Compat(`WebSocket connected but received error during ${this.base.current} check`)
+            );
+            return;
+          }
+        }
         this.base.on_error(error);
       })
     } catch (e) {

libraries/nocap/src/classes/Base.ts

@@ -890,6 +890,10 @@ export default class Base {
         }
       else
         message = "Check skipped because no connection could be made to relay's websocket."
+      // Don't overwrite checks that already completed successfully
+      // (e.g. open check passed before the websocket dropped during read)
+      const existing = this?.results?.get(key as keyof IResult);
+      if (existing?.data === true) return;
       this?.results?.set(key as keyof IResult, { data: false, duration: -1, status: "error", message }) 
     })
     const promise = this?.promises?.get(this?.current ?? "")