From 8bc0ef8c27533a9e95ab33be1c4787cf134abdbc Mon Sep 17 00:00:00 2001
From: Bruno Windels <brunow@matrix.org>
Date: Tue, 4 Feb 2020 12:44:17 +0100
Subject: [PATCH] add logging when a request is being cancelled

so we can more easily see (especially for to_device requests)
why something was cancelled
---
 src/crypto/verification/request/VerificationRequest.js | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/crypto/verification/request/VerificationRequest.js b/src/crypto/verification/request/VerificationRequest.js
index 57a3bbeeb..4f62c23ba 100644
--- a/src/crypto/verification/request/VerificationRequest.js
+++ b/src/crypto/verification/request/VerificationRequest.js
@@ -557,6 +557,15 @@ export class VerificationRequest extends EventEmitter {
         } else if (this._observeOnly !== wasObserveOnly) {
             this.emit("change");
         }
+
+        // log cancellations so we can see from rageshakes why riot sometimes cancels
+        // requests on its own
+        if (type === CANCEL_TYPE) {
+            logger.log(`verification request ${this.channel.transactionId}: ` +
+                `.cancel event with ${JSON.stringify(event.getContent())} ` +
+                `sender=${event.getSender()}, isSentByUs=${isSentByUs} ` +
+                `phase=${this.phase}`);
+        }
     }
 
     _setupTimeout(phase) {