lib: socket: Flush all data before closing socket

Sometimes socket will be closed even not all of the data is flushed to daemon.
So before closing, following will be handled:
1. Use shutdown() to shut down further transmissions
2. Subsequent read() to resend_buffer

Also socket fd is reset in child fork handler since the socket itself will
not be duplicated in the child process.

Solves JIRA: SWGIII-28702

Signed-off-by: Saya Sugiura <ssugiura@jp.adit-jv.com>

1 files changed, 5 insertions, 2 deletions

diff --git a/src/lib/dlt_env_ll.c b/src/lib/dlt_env_ll.c
index a3e3a16..aeaa1d3 100644
--- a/src/lib/dlt_env_ll.c
+++ b/src/lib/dlt_env_ll.c
@@ -354,8 +354,11 @@ void dlt_env_free_ll_set(dlt_env_ll_set * const ll_set)
     return;
   }
 
-  free(ll_set->item);
-  ll_set->item = NULL;
+  if (!ll_set->item)
+  {
+    free(ll_set->item);
+    ll_set->item = NULL;
+  }
   ll_set->array_size = 0u;
   ll_set->num_elem = 0u;
 }