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-rw-r--r--include/afb/afb-req-x1.h2
-rw-r--r--include/afb/afb-req-x2.h4
2 files changed, 6 insertions, 0 deletions
diff --git a/include/afb/afb-req-x1.h b/include/afb/afb-req-x1.h
index 6761521e..97b14428 100644
--- a/include/afb/afb-req-x1.h
+++ b/include/afb/afb-req-x1.h
@@ -274,6 +274,7 @@ static inline int afb_req_x1_session_set_LOA(struct afb_req_x1 req, unsigned lev
*
* Establishes for the client link identified by 'req' a subscription
* to the 'event'.
+ * Establishing subscriptions MUST be called BEFORE replying to the request.
* Returns 0 in case of successful subscription or -1 in case of error.
*/
static inline int afb_req_x1_subscribe(struct afb_req_x1 req, struct afb_event_x1 event)
@@ -286,6 +287,7 @@ static inline int afb_req_x1_subscribe(struct afb_req_x1 req, struct afb_event_x
*
* Revokes the subscription established to the 'event' for the client
* link identified by 'req'.
+ * Revoking subscription MUST be called BEFORE replying to the request.
* Returns 0 in case of successful subscription or -1 in case of error.
*/
static inline int afb_req_x1_unsubscribe(struct afb_req_x1 req, struct afb_event_x1 event)
diff --git a/include/afb/afb-req-x2.h b/include/afb/afb-req-x2.h
index 5111f2f0..21bbc095 100644
--- a/include/afb/afb-req-x2.h
+++ b/include/afb/afb-req-x2.h
@@ -458,6 +458,8 @@ int afb_req_x2_session_set_LOA(
* Establishes for the client link identified by 'req' a subscription
* to the 'event'.
*
+ * Establishing subscription MUST be called BEFORE replying to the request.
+ *
* @param req the request
* @param event the event to subscribe
*
@@ -476,6 +478,8 @@ int afb_req_x2_subscribe(
* link identified by 'req'.
* Returns 0 in case of successful subscription or -1 in case of error.
*
+ * Revoking subscription MUST be called BEFORE replying to the request.
+ *
* @param req the request
* @param event the event to revoke
*