fix connection to FT proxies. Fixes #7349

src/common/socks5.py

@@ -871,6 +871,10 @@ class Socks5:
         """
         Get sha of sid + Initiator jid + Target jid
         """
+        if self.file_props.is_a_proxy:
+            return hashlib.sha1('%s%s%s' % (self.sid,
+                self.file_props.proxy_sender, self.file_props.proxy_receiver)
+                ).hexdigest()
         return hashlib.sha1('%s%s%s' % (self.sid, self.initiator,
             self.target)).hexdigest()