初始化版本

2026-02-09 10:27:21 +08:00
commit 64d767932f
4467 changed files with 2486822 additions and 0 deletions
--- a/lwip/lwip-2.2.1/contrib/apps/udpecho/udpecho.c
+++ b/lwip/lwip-2.2.1/contrib/apps/udpecho/udpecho.c
@ -0,0 +1,88 @@
+/*
+ * Copyright (c) 2001-2003 Swedish Institute of Computer Science.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
+ * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
+ * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
+ * OF SUCH DAMAGE.
+ *
+ * This file is part of the lwIP TCP/IP stack.
+ *
+ * Author: Adam Dunkels <adam@sics.se>
+ *
+ */
+
+#include "udpecho.h"
+
+#include "lwip/opt.h"
+
+#if LWIP_NETCONN
+
+#include "lwip/api.h"
+#include "lwip/sys.h"
+
+/*-----------------------------------------------------------------------------------*/
+static void
+udpecho_thread(void *arg)
+{
+  struct netconn *conn;
+  struct netbuf *buf;
+  char buffer[4096];
+  err_t err;
+  LWIP_UNUSED_ARG(arg);
+
+#if LWIP_IPV6
+  conn = netconn_new(NETCONN_UDP_IPV6);
+  LWIP_ERROR("udpecho: invalid conn", (conn != NULL), return;);
+  netconn_bind(conn, IP6_ADDR_ANY, 7);
+#else /* LWIP_IPV6 */
+  conn = netconn_new(NETCONN_UDP);
+  LWIP_ERROR("udpecho: invalid conn", (conn != NULL), return;);
+  netconn_bind(conn, IP_ADDR_ANY, 7);
+#endif /* LWIP_IPV6 */
+
+  while (1) {
+    err = netconn_recv(conn, &buf);
+    if (err == ERR_OK) {
+      /*  no need netconn_connect here, since the netbuf contains the address */
+      if(netbuf_copy(buf, buffer, sizeof(buffer)) != buf->p->tot_len) {
+        LWIP_DEBUGF(LWIP_DBG_ON, ("netbuf_copy failed\n"));
+      } else {
+        buffer[buf->p->tot_len] = '\0';
+        err = netconn_send(conn, buf);
+        if(err != ERR_OK) {
+          LWIP_DEBUGF(LWIP_DBG_ON, ("netconn_send failed: %d\n", (int)err));
+        } else {
+          LWIP_DEBUGF(LWIP_DBG_ON, ("got %s\n", buffer));
+        }
+      }
+      netbuf_delete(buf);
+    }
+  }
+}
+/*-----------------------------------------------------------------------------------*/
+void
+udpecho_init(void)
+{
+  sys_thread_new("udpecho_thread", udpecho_thread, NULL, DEFAULT_THREAD_STACKSIZE, DEFAULT_THREAD_PRIO);
+}
+
+#endif /* LWIP_NETCONN */