Merge branch 'fix-single-use-crash' into 'release'

Handle empty rounds list when getting round URL in single use request timeout

See merge request !695

.gitlab-ci.yml

@@ -104,7 +104,8 @@ bindings-ios:
   tags:
     - ios
   script:
-    - export PATH=$PATH:$HOME/go/bin
+    - export PATH=/opt/homebrew/bin:$PATH:$HOME/go/bin
+    - mc --version
     - go mod tidy
     - rm -rf vendor/
     - go build ./...

bindings/single.go

@@ -255,9 +255,15 @@ func (sr singleUseResponse) Callback(payload []byte,
 	for _, r := range rounds {
 		rids = append(rids, r.ID)
 	}
+	// If the callback get's called on a timed out request, the rounds list will be
+	// empty. In this case, roundURL should be empty as well.
+	roundURL := ""
+	if len(rids) > 0 {
+		roundURL = getRoundURL(rids[0])
+	}
 	sendReport := SingleUseResponseReport{
 		RoundsList:  makeRoundsList(rids...),
-		RoundURL:    getRoundURL(rids[0]),
+		RoundURL:    roundURL,
 		ReceptionID: receptionID.Source,
 		EphID:       receptionID.EphId.Int64(),
 		Payload:     payload,