[SGsAP] Add linger option in usrsctp

lib/ogslib

@@ -1 +1 @@
-Subproject commit 74d0df2b5b6d2502f56ff54deb4941f2fbbd5253
+Subproject commit 2a609cc8e33e6288a1f56af595ef677884af1591

src/mme/ogs-usrsctp.c

@@ -42,6 +42,7 @@ void ogs_sctp_final()
 ogs_sock_t *ogs_sctp_socket(int family, int type, ogs_socknode_t *node)
 {
     struct socket *socket = NULL;
+    struct linger l;
     const int on = 1;
     struct sctp_event event;
     uint16_t event_types[] = {
@@ -83,6 +84,16 @@ ogs_sock_t *ogs_sctp_socket(int family, int type, ogs_socknode_t *node)
                 return NULL;
             }
         }
+        if (node->option.l_onoff) {
+            memset(&l, 0, sizeof(l));
+            l.l_onoff = node->option.l_onoff;
+            l.l_linger = node->option.l_linger;
+            if (usrsctp_setsockopt(socket, SOL_SOCKET, SO_LINGER,
+                    (const void *)&l, (socklen_t) sizeof(struct linger)) < 0) {
+                ogs_error("Could not set SO_LINGER on SCTP socket");
+                return NULL;
+            }
+        }
     }
 
     if (usrsctp_setsockopt(socket, IPPROTO_SCTP, SCTP_RECVRCVINFO,

src/mme/sgsap-usrpath.c

@@ -39,6 +39,7 @@ ogs_sock_t *sgsap_client(mme_vlr_t *vlr)
 
     ogs_socknode_sctp_option(node, &context_self()->config.sockopt);
     ogs_socknode_nodelay(node, true);
+    ogs_socknode_linger(node, true, 0);
     ogs_socknode_set_poll(node, mme_self()->pollset,
             OGS_POLLIN, usrsctp_recv_handler, node);