From b1ab783a1466903c237db15afe41b5b5106c9979 Mon Sep 17 00:00:00 2001
From: windowsair <msdn_02@sina.com>
Date: Sun, 10 Oct 2021 21:44:43 +0800
Subject: [PATCH] feat(usbip): Adopt more aggressive KCP strategy

---
 main/kcp_server.c | 15 +++++++++------
 main/main.c       |  2 +-
 2 files changed, 10 insertions(+), 7 deletions(-)

diff --git a/main/kcp_server.c b/main/kcp_server.c
index 96f251e..3a8eaec 100644
--- a/main/kcp_server.c
+++ b/main/kcp_server.c
@@ -71,12 +71,14 @@ static int udp_output(const char *buf, int len, ikcpcb *kcp, void *user)
 }
 
 int kcp_network_send(const char *buffer, int len) {
-    return ikcp_send(kcp1, buffer, len);
+    ikcp_send(kcp1, buffer, len);
+    ikcp_flush(kcp1);
+    return 0;
 }
 
 void kcp_server_task()
 {
-    TickType_t xLastWakeTime;
+    TickType_t xLastWakeTime = xTaskGetTickCount();
 
     while (1) {
         kSock = socket(AF_INET, SOCK_DGRAM, IPPROTO_IP);
@@ -114,13 +116,14 @@ void kcp_server_task()
         }
         kcp1->output = udp_output;
 
-        ikcp_wndsize(kcp1, 128, 128);
+        ikcp_wndsize(kcp1, 4096, 4096);
 
-        ikcp_nodelay(kcp1, 2, 10, 2, 1); // set fast mode
-        kcp1->rx_minrto = 10;
+        ikcp_nodelay(kcp1, 2, 2, 2, 1); // set fast mode
+        kcp1->interval = 0;
+        kcp1->rx_minrto = 1;
         kcp1->fastresend = 1;
 
-        ikcp_setmtu(kcp1, 1500);
+        ikcp_setmtu(kcp1, 768);
 
 
 
diff --git a/main/main.c b/main/main.c
index 7444a45..692e94b 100644
--- a/main/main.c
+++ b/main/main.c
@@ -172,7 +172,7 @@ void app_main()
     timer_init();
 
 #if (USE_KCP == 1)
-    xTaskCreate(kcp_server_task, "kcp_server", 4096, NULL, 14, NULL);
+    xTaskCreate(kcp_server_task, "kcp_server", 4096, NULL, 7, NULL);
 #else
     xTaskCreate(tcp_server_task, "tcp_server", 4096, NULL, 14, NULL);
 #endif