ports: fix TCP client disconnect notifications

api/cloud/oc_cloud.c

@@ -132,19 +132,7 @@ void
 oc_cloud_close_endpoint(const oc_endpoint_t *ep)
 {
   OC_CLOUD_DBG("oc_cloud_close_endpoint");
-#ifdef OC_SECURITY
-  const oc_tls_peer_t *peer = oc_tls_get_peer(ep);
-  if (peer != NULL) {
-    OC_CLOUD_DBG("oc_cloud_close_endpoint: oc_tls_close_connection");
-    oc_tls_close_connection(ep);
-  } else
-#endif /* OC_SECURITY */
-  {
-#ifdef OC_TCP
-    OC_CLOUD_DBG("oc_cloud_close_endpoint: oc_connectivity_end_session");
-    oc_connectivity_end_session(ep);
-#endif /* OC_TCP */
-  }
+  oc_close_session(ep);
 }
 
 void

api/oc_client_api.c

@@ -18,6 +18,18 @@
 
 #include "oc_config.h"
 
+#include "oc_api.h"
+#include "oc_endpoint.h"
+
+#ifdef OC_TCP
+#include "api/oc_session_events_internal.h"
+#include "port/oc_connectivity.h"
+#endif /* OC_TCP */
+
+#ifdef OC_SECURITY
+#include "security/oc_tls_internal.h"
+#endif /* OC_SECURITY */
+
 #ifdef OC_CLIENT
 
 #include "api/client/oc_client_cb_internal.h"
@@ -38,10 +50,6 @@
 #include "messaging/coap/signal_internal.h"
 #endif /* OC_TCP */
 
-#ifdef OC_SECURITY
-#include "security/oc_tls_internal.h"
-#endif /* OC_SECURITY */
-
 #include <assert.h>
 
 typedef struct oc_dispatch_context_t
@@ -948,6 +956,8 @@ oc_do_ip_discovery_at_endpoint(const char *rt, oc_discovery_handler_t handler,
   return status;
 }
 
+#endif /* OC_CLIENT */
+
 void
 oc_close_session(const oc_endpoint_t *endpoint)
 {
@@ -957,9 +967,9 @@ oc_close_session(const oc_endpoint_t *endpoint)
 #endif /* OC_SECURITY */
   } else if (endpoint->flags & TCP) {
 #ifdef OC_TCP
-    oc_connectivity_end_session(endpoint);
+    if (oc_connectivity_end_session_v1(endpoint, false)) {
+      oc_handle_session(endpoint, OC_SESSION_DISCONNECTED);
+    }
 #endif /* OC_TCP */
   }
 }
-
-#endif /* OC_CLIENT */

api/oc_session_events.c

@@ -332,7 +332,7 @@ handle_session_disconnected(const oc_endpoint_t *endpoint)
   (void)endpoint;
 #ifdef OC_SECURITY
   if ((endpoint->flags & SECURED) != 0 && (endpoint->flags & TCP) != 0) {
-    oc_tls_remove_peer(endpoint);
+    oc_tls_remove_peer(endpoint, false);
   }
 #endif /* OC_SECURITY */
 #ifdef OC_SERVER

api/plgd/plgd_time.c

@@ -922,7 +922,7 @@ plgd_time_fetch(plgd_time_fetch_config_t fetch, unsigned *flags)
     OC_ERR("failed to send fetch plgd-time request to endpoint");
 #if defined(OC_SECURITY) && defined(OC_PKI)
     if (add_insecure_peer) {
-      oc_tls_remove_peer(fetch.endpoint);
+      oc_tls_remove_peer(fetch.endpoint, true);
     }
 #endif /* OC_SECURITY && OC_PKI */
     oc_memb_free(&g_fetch_params_s, fetch_params);

messaging/coap/engine.c

@@ -1100,7 +1100,7 @@ coap_process_invalid_inbound_message(const coap_packet_t *packet,
 #endif /* OC_SECURITY */
 #ifdef OC_TCP
   if ((msg->endpoint.flags & TCP) != 0) {
-    oc_connectivity_end_session(&msg->endpoint);
+    oc_close_session(&msg->endpoint);
     return;
   }
 #endif /* OC_TCP */

messaging/coap/signal.c

@@ -21,6 +21,7 @@
 #include "log_internal.h"
 #include "signal_internal.h"
 #include "coap_internal.h"
+#include "oc_api.h"
 #include "transactions_internal.h"
 #include <string.h>
 
@@ -223,7 +224,7 @@ coap_signal_handle_message(const coap_packet_t *packet,
   if (packet->code == RELEASE_7_04) {
     // alternative address
     // hold off
-    oc_connectivity_end_session(endpoint);
+    oc_close_session(endpoint);
     return COAP_SIGNAL_DONE;
   }
 

port/android/ipadapter.c

@@ -1629,13 +1629,21 @@ oc_connectivity_shutdown(size_t device)
 #ifdef OC_TCP
 void
 oc_connectivity_end_session(const oc_endpoint_t *endpoint)
+{
+  oc_connectivity_end_session_v1(endpoint, true);
+}
+
+bool
+oc_connectivity_end_session_v1(const oc_endpoint_t *endpoint,
+                               bool notify_session_end)
 {
   if (endpoint->flags & TCP) {
     ip_context_t *dev = get_ip_context_for_device(endpoint->device);
     if (dev) {
-      oc_tcp_end_session(dev, endpoint);
+      return oc_tcp_end_session(dev, endpoint, notify_session_end);
     }
   }
+  return false;
 }
 #endif /* OC_TCP */
 

port/android/tcpadapter.c

@@ -189,11 +189,11 @@ oc_tcp_add_socks_to_fd_set(ip_context_t *dev)
 }
 
 static void
-free_tcp_session(tcp_session_t *session)
+free_tcp_session(tcp_session_t *session, bool notify_session_end)
 {
   oc_list_remove(session_list, session);
 
-  if (!oc_session_events_disconnect_is_ongoing()) {
+  if (!oc_session_events_disconnect_is_ongoing() && notify_session_end) {
     oc_session_end_event(&session->endpoint);
   }
 
@@ -401,13 +401,13 @@ oc_tcp_receive_message(ip_context_t *dev, fd_set *fds, oc_message_t *message)
     if (count < 0) {
       OC_ERR("recv error! %d", errno);
 
-      free_tcp_session(session);
+      free_tcp_session(session, true);
 
       ret_with_code(ADAPTER_STATUS_ERROR);
     } else if (count == 0) {
       OC_DBG("peer closed TCP session\n");
 
-      free_tcp_session(session);
+      free_tcp_session(session, true);
 
       ret_with_code(ADAPTER_STATUS_NONE);
     }
@@ -428,7 +428,7 @@ oc_tcp_receive_message(ip_context_t *dev, fd_set *fds, oc_message_t *message)
         oc_tcp_get_total_length_from_message_header(message);
       if (length_from_header < 0) {
         OC_ERR("invalid message size in header");
-        free_tcp_session(session);
+        free_tcp_session(session, true);
         ret_with_code(ADAPTER_STATUS_ERROR);
       }
 
@@ -438,7 +438,7 @@ oc_tcp_receive_message(ip_context_t *dev, fd_set *fds, oc_message_t *message)
         OC_ERR(
           "total receive length(%zu) is bigger than message buffer size(%zu)",
           total_length, oc_message_buffer_size(message));
-        free_tcp_session(session);
+        free_tcp_session(session, true);
         ret_with_code(ADAPTER_STATUS_ERROR);
       }
       OC_DBG("tcp packet total length : %zu bytes.", total_length);
@@ -448,7 +448,7 @@ oc_tcp_receive_message(ip_context_t *dev, fd_set *fds, oc_message_t *message)
   } while (total_length > message->length);
 
   if (!oc_tcp_is_valid_message(message)) {
-    free_tcp_session(session);
+    free_tcp_session(session, true);
     return ADAPTER_STATUS_ERROR;
   }
 
@@ -461,15 +461,17 @@ oc_tcp_receive_message(ip_context_t *dev, fd_set *fds, oc_message_t *message)
   return ret;
 }
 
-void
-oc_tcp_end_session(ip_context_t *dev, const oc_endpoint_t *endpoint)
+bool
+oc_tcp_end_session(ip_context_t *dev, const oc_endpoint_t *endpoint,
+                   bool notify_session_end)
 {
   pthread_mutex_lock(&dev->tcp.mutex);
   tcp_session_t *session = find_session_by_endpoint(endpoint);
   if (session) {
-    free_tcp_session(session);
+    free_tcp_session(session, notify_session_end);
   }
   pthread_mutex_unlock(&dev->tcp.mutex);
+  return session != NULL;
 }
 
 static int
@@ -764,7 +766,7 @@ oc_tcp_connectivity_shutdown(ip_context_t *dev)
   while (session != NULL) {
     next = session->next;
     if (session->endpoint.device == dev->device) {
-      free_tcp_session(session);
+      free_tcp_session(session, true);
     }
     session = next;
   }

port/android/tcpadapter.h

@@ -39,7 +39,8 @@ void oc_tcp_add_socks_to_fd_set(ip_context_t *dev);
 adapter_receive_state_t oc_tcp_receive_message(ip_context_t *dev, fd_set *fds,
                                                oc_message_t *message);
 
-void oc_tcp_end_session(ip_context_t *dev, const oc_endpoint_t *endpoint);
+bool oc_tcp_end_session(ip_context_t *dev, const oc_endpoint_t *endpoint,
+                        bool notify_session_end);
 
 #ifdef __cplusplus
 }

port/esp32/adapter/src/ipadapter.c

@@ -1617,13 +1617,21 @@ oc_connectivity_shutdown(size_t device)
 #ifdef OC_TCP
 void
 oc_connectivity_end_session(const oc_endpoint_t *endpoint)
+{
+  oc_connectivity_end_session_v1(endpoint, true);
+}
+
+bool
+oc_connectivity_end_session_v1(const oc_endpoint_t *endpoint,
+                               bool notify_session_end)
 {
   if (endpoint->flags & TCP) {
     ip_context_t *dev = get_ip_context_for_device(endpoint->device);
     if (dev) {
-      oc_tcp_end_session(dev, endpoint);
+      return oc_tcp_end_session(dev, endpoint, notify_session_end);
     }
   }
+  return false;
 }
 #endif /* OC_TCP */
 

port/esp32/adapter/src/tcpadapter.c

@@ -159,11 +159,11 @@ oc_tcp_add_socks_to_fd_set(ip_context_t *dev)
 }
 
 static void
-free_tcp_session(tcp_session_t *session)
+free_tcp_session(tcp_session_t *session, bool notify_session_end)
 {
   oc_list_remove(session_list, session);
 
-  if (!oc_session_events_disconnect_is_ongoing()) {
+  if (!oc_session_events_disconnect_is_ongoing() && notify_session_end) {
     oc_session_end_event(&session->endpoint);
   }
 
@@ -374,13 +374,13 @@ oc_tcp_receive_message(ip_context_t *dev, fd_set *fds, oc_message_t *message)
     if (count < 0) {
       OC_ERR("recv error! %d", errno);
 
-      free_tcp_session(session);
+      free_tcp_session(session, true);
 
       ret_with_code(ADAPTER_STATUS_ERROR);
     } else if (count == 0) {
       OC_DBG("peer closed TCP session\n");
 
-      free_tcp_session(session);
+      free_tcp_session(session, true);
 
       ret_with_code(ADAPTER_STATUS_NONE);
     }
@@ -401,7 +401,7 @@ oc_tcp_receive_message(ip_context_t *dev, fd_set *fds, oc_message_t *message)
         oc_tcp_get_total_length_from_message_header(message);
       if (length_from_header < 0) {
         OC_ERR("invalid message size in header");
-        free_tcp_session(session);
+        free_tcp_session(session, true);
         ret_with_code(ADAPTER_STATUS_ERROR);
       }
 
@@ -411,7 +411,7 @@ oc_tcp_receive_message(ip_context_t *dev, fd_set *fds, oc_message_t *message)
         OC_ERR(
           "total receive length(%zu) is bigger than message buffer size(%zu)",
           total_length, oc_message_buffer_size(message));
-        free_tcp_session(session);
+        free_tcp_session(session, true);
         ret_with_code(ADAPTER_STATUS_ERROR);
       }
       OC_DBG("tcp packet total length : %zu bytes.", total_length);
@@ -421,7 +421,7 @@ oc_tcp_receive_message(ip_context_t *dev, fd_set *fds, oc_message_t *message)
   } while (total_length > message->length);
 
   if (!oc_tcp_is_valid_message(message)) {
-    free_tcp_session(session);
+    free_tcp_session(session, true);
     ret_with_code(ADAPTER_STATUS_ERROR);
   }
 
@@ -434,15 +434,17 @@ oc_tcp_receive_message(ip_context_t *dev, fd_set *fds, oc_message_t *message)
   return ret;
 }
 
-void
-oc_tcp_end_session(ip_context_t *dev, const oc_endpoint_t *endpoint)
+bool
+oc_tcp_end_session(ip_context_t *dev, const oc_endpoint_t *endpoint,
+                   bool notify_session_end)
 {
   pthread_mutex_lock(&dev->tcp.mutex);
   tcp_session_t *session = find_session_by_endpoint(endpoint);
   if (session) {
-    free_tcp_session(session);
+    free_tcp_session(session, notify_session_end);
   }
   pthread_mutex_unlock(&dev->tcp.mutex);
+  return session != NULL;
 }
 
 static int
@@ -724,7 +726,7 @@ oc_tcp_connectivity_shutdown(ip_context_t *dev)
   while (session != NULL) {
     next = session->next;
     if (session->endpoint.device == dev->device) {
-      free_tcp_session(session);
+      free_tcp_session(session, true);
     }
     session = next;
   }

port/esp32/adapter/src/tcpadapter.h

@@ -39,7 +39,8 @@ void oc_tcp_add_socks_to_fd_set(ip_context_t *dev);
 adapter_receive_state_t oc_tcp_receive_message(ip_context_t *dev, fd_set *fds,
                                                oc_message_t *message);
 
-void oc_tcp_end_session(ip_context_t *dev, const oc_endpoint_t *endpoint);
+bool oc_tcp_end_session(ip_context_t *dev, const oc_endpoint_t *endpoint,
+                        bool notify_session_end);
 
 #ifdef __cplusplus
 }

port/linux/ipadapter.c

@@ -1577,12 +1577,20 @@ oc_connectivity_shutdown(size_t device)
 }
 
 #ifdef OC_TCP
-void
-oc_connectivity_end_session(const oc_endpoint_t *endpoint)
+bool
+oc_connectivity_end_session_v1(const oc_endpoint_t *endpoint,
+                               bool notify_session_end)
 {
   if ((endpoint->flags & TCP) != 0 &&
       oc_get_ip_context_for_device(endpoint->device) != NULL) {
-    tcp_end_session(endpoint);
+    return tcp_end_session(endpoint, notify_session_end);
   }
+  return false;
+}
+
+void
+oc_connectivity_end_session(const oc_endpoint_t *endpoint)
+{
+  oc_connectivity_end_session_v1(endpoint, true);
 }
 #endif /* OC_TCP */