From 85f60ea04e768f6962c09a7ed68285537054d777 Mon Sep 17 00:00:00 2001
From: Mark Qvist <mark@unsigned.io>
Date: Mon, 19 Dec 2022 01:04:49 +0100
Subject: [PATCH] Added check for already transferring resource to Link class

---
 RNS/Link.py | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/RNS/Link.py b/RNS/Link.py
index 548b7b3..920813b 100644
--- a/RNS/Link.py
+++ b/RNS/Link.py
@@ -900,6 +900,13 @@ class Link:
     def register_incoming_resource(self, resource):
         self.incoming_resources.append(resource)
 
+    def has_incoming_resource(self, resource):
+        for incoming_resource in self.incoming_resources:
+            if incoming_resource.hash == resource.hash:
+                return True
+
+        return False
+
     def cancel_outgoing_resource(self, resource):
         if resource in self.outgoing_resources:
             self.outgoing_resources.remove(resource)