From 224f7cee7c2c5592081e1dec640862f029323782 Mon Sep 17 00:00:00 2001
From: Jan Breuer <jan.breuer@jaybee.cz>
Date: 周二, 09 11月 2021 21:35:13 +0800
Subject: [PATCH] Merge pull request #128 from MisterHW/keep-alive

---
 examples/test-LwIP-netconn/scpi_server.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/examples/test-LwIP-netconn/scpi_server.c b/examples/test-LwIP-netconn/scpi_server.c
index 2018bcd..6147235 100644
--- a/examples/test-LwIP-netconn/scpi_server.c
+++ b/examples/test-LwIP-netconn/scpi_server.c
@@ -246,6 +246,10 @@
         } else {
             /* connection established */
             SCPI_Event_DeviceConnected(context, newconn);
+            ip_set_option(newconn->pcb.tcp, SOF_KEEPALIVE);
+            newconn->pcb.tcp->keep_idle   = SCPI_KEEP_IDLE;  // Override TCP_KEEPIDLE_DEFAULT  for this connection.
+            newconn->pcb.tcp->keep_intvl  = SCPI_KEEP_INTVL; // Override TCP_KEEPINTVL_DEFAULT for this connection.
+            newconn->pcb.tcp->keep_cnt    = SCPI_KEEP_CNT;   // Override TCP_KEEPCNT_DEFAULT   for this connection.
             user_data->io = newconn;
         }
     }
@@ -263,6 +267,10 @@
         } else {
             /* control connection established */
             SCPI_Event_ControlConnected(context, newconn);
+            ip_set_option(newconn->pcb.tcp, SOF_KEEPALIVE);
+            newconn->pcb.tcp->keep_idle   = SCPI_KEEP_IDLE;  // Override TCP_KEEPIDLE_DEFAULT  for this connection.
+            newconn->pcb.tcp->keep_intvl  = SCPI_KEEP_INTVL; // Override TCP_KEEPINTVL_DEFAULT for this connection.
+            newconn->pcb.tcp->keep_cnt    = SCPI_KEEP_CNT;   // Override TCP_KEEPCNT_DEFAULT   for this connection.
             user_data->control_io = newconn;
         }
     }

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