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-rw-r--r--stun/usages/turn.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/stun/usages/turn.h b/stun/usages/turn.h
index 7a2d4e6..83fa00a 100644
--- a/stun/usages/turn.h
+++ b/stun/usages/turn.h
@@ -256,6 +256,10 @@ size_t stun_usage_turn_create_permission (StunAgent *agent, StunMessage *msg,
* Allocate request, in case the currently used TURN server is requesting the use
* of an alternate server. This argument will only be filled if the return value
* of the function is #STUN_USAGE_TURN_RETURN_ALTERNATE_SERVER
+ * In the case of @STUN_USAGE_TURN_COMPATIBILITY_OC2007 compatibility, the
+ * @alternate_server could be filled at any time, and should only be considered
+ * if the request was sent to a different server than the address returned
+ * in the @alternate_server field
* @alternate_server_len: The length of @alternate_server
* @bandwidth: A pointer to fill with the bandwidth the TURN server allocated us
* @lifetime: A pointer to fill with the lifetime of the allocation