http: notify client on request error

Notify client app that we errored out while trying to generate request.

Type: fix

Change-Id: I3e20fe22d8a927ae8e9bf8391297e10c974dc941
Signed-off-by: Matus Fabian <matfabia@cisco.com>

2 files changed, 23 insertions, 4 deletions

diff --git a/src/plugins/hs_apps/http_client_cli.c b/src/plugins/hs_apps/http_client_cli.c
index 085a2b69bf7..1a321bf44a8 100644
--- a/src/plugins/hs_apps/http_client_cli.c
+++ b/src/plugins/hs_apps/http_client_cli.c
@@ -13,11 +13,9 @@
  * limitations under the License.
  */
 
-#include <vnet/session/application.h>
 #include <vnet/session/application_interface.h>
 #include <vnet/session/session.h>
 #include <http/http.h>
-#include <hs_apps/http_cli.h>
 
 #define HCC_DEBUG 0
 
@@ -68,6 +66,7 @@ typedef struct
 typedef enum
 {
   HCC_REPLY_RECEIVED = 100,
+  HCC_TRANSPORT_CLOSED,
 } hcc_cli_signal_t;
 
 static hcc_main_t hcc_main;
@@ -273,6 +272,17 @@ hcc_ts_cleanup_callback (session_t *s, session_cleanup_ntf_t ntf)
   hcc_session_free (s->thread_index, hs);
 }
 
+static void
+hcc_ts_transport_closed (session_t *s)
+{
+  hcc_main_t *hcm = &hcc_main;
+
+  HCC_DBG ("transport closed");
+
+  vlib_process_signal_event_mt (hcm->vlib_main, hcm->cli_node_index,
+				HCC_TRANSPORT_CLOSED, 0);
+}
+
 static session_cb_vft_t hcc_session_cb_vft = {
   .session_accept_callback = hcc_ts_accept_callback,
   .session_disconnect_callback = hcc_ts_disconnect_callback,
@@ -281,6 +291,7 @@ static session_cb_vft_t hcc_session_cb_vft = {
   .builtin_app_tx_callback = hcc_ts_tx_callback,
   .session_reset_callback = hcc_ts_reset_callback,
   .session_cleanup_callback = hcc_ts_cleanup_callback,
+  .session_transport_closed_callback = hcc_ts_transport_closed,
 };
 
 static clib_error_t *
@@ -411,6 +422,9 @@ hcc_run (vlib_main_t *vm, int print_output)
 	vlib_cli_output (vm, "%v", hcm->http_response);
       vec_free (hcm->http_response);
       break;
+    case HCC_TRANSPORT_CLOSED:
+      err = clib_error_return (0, "error, transport closed");
+      break;
     default:
       err = clib_error_return (0, "unexpected event %d", event_type);
       break;
diff --git a/src/plugins/http/http.c b/src/plugins/http/http.c
index 37a6de71bc7..737e7b034a9 100644
--- a/src/plugins/http/http.c
+++ b/src/plugins/http/http.c
@@ -598,7 +598,6 @@ http_state_wait_server_reply (http_conn_t *hc, transport_send_params_t *sp)
     }
 
 error:
-
   http_send_error (hc, ec);
   session_transport_closing_notify (&hc->connection);
   http_disconnect_transport (hc);
@@ -838,7 +837,9 @@ http_state_wait_app_method (http_conn_t *hc, transport_send_params_t *sp)
   return HTTP_SM_STOP;
 
 error:
+  svm_fifo_dequeue_drop_all (as->tx_fifo);
   session_transport_closing_notify (&hc->connection);
+  session_transport_closed_notify (&hc->connection);
   http_disconnect_transport (hc);
   return HTTP_SM_ERROR;
 }
@@ -1248,7 +1249,11 @@ http_transport_close (u32 hc_index, u32 thread_index)
       http_disconnect_transport (hc);
       return;
     }
-
+  else if (hc->state == HTTP_CONN_STATE_CLOSED)
+    {
+      HTTP_DBG (1, "nothing to do, already closed");
+      return;
+    }
   as = session_get_from_handle (hc->h_pa_session_handle);
 
   /* Nothing more to send, confirm close */