1 files changed, 131 insertions, 0 deletions
diff --git a/apps/netutils/netlib/netlib_listenon.c b/apps/netutils/netlib/netlib_listenon.c
new file mode 100644
index 000000000..cacea174b
--- /dev/null
+++ b/apps/netutils/netlib/netlib_listenon.c
@@ -0,0 +1,131 @@
+/****************************************************************************
+ * netutils/netlib/uip_listenon.c
+ *
+ *   Copyright (C) 2007-2009, 2011 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * 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. Neither the name Gregory Nutt nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "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
+ * COPYRIGHT OWNER OR CONTRIBUTORS 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <errno.h>
+#include <debug.h>
+#include <netinet/in.h>
+
+#include <apps/netutils/netlib.h>
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: uip_listenon
+ *
+ * Description:
+ *   Implement basic server listening
+ *
+ * Parameters:
+ *   portno    The port to listen on (in network byte order)
+ *
+ * Return:
+ *   A valid listening socket or -1 on error.
+ *
+ ****************************************************************************/
+
+int uip_listenon(uint16_t portno)
+{
+  struct sockaddr_in myaddr;
+  int listensd;
+#ifdef CONFIG_NET_HAVE_REUSEADDR
+  int optval;
+#endif
+
+  /* Create a new TCP socket to use to listen for connections */
+
+  listensd = socket(PF_INET, SOCK_STREAM, 0);
+  if (listensd < 0)
+    {
+      ndbg("socket failure: %d\n", errno);
+      return ERROR;
+    }
+
+  /* Set socket to reuse address */
+
+#ifdef CONFIG_NET_HAVE_REUSEADDR
+  optval = 1;
+  if (setsockopt(listensd, SOL_SOCKET, SO_REUSEADDR, (void*)&optval, sizeof(int)) < 0)
+    {
+      ndbg("setsockopt SO_REUSEADDR failure: %d\n", errno);
+      goto errout_with_socket;
+    }
+#endif
+
+  /* Bind the socket to a local address */
+
+  myaddr.sin_family      = AF_INET;
+  myaddr.sin_port        = portno;
+  myaddr.sin_addr.s_addr = INADDR_ANY;
+
+  if (bind(listensd, (struct sockaddr*)&myaddr, sizeof(struct sockaddr_in)) < 0)
+    {
+      ndbg("bind failure: %d\n", errno);
+      goto errout_with_socket;
+    }
+
+  /* Listen for connections on the bound TCP socket */
+
+  if (listen(listensd, 5) < 0)
+    {
+      ndbg("listen failure %d\n", errno);
+      goto errout_with_socket;
+    }
+
+  /* Begin accepting connections */
+
+  nvdbg("Accepting connections on port %d\n", ntohs(portno));
+  return listensd;
+
+errout_with_socket:
+  close(listensd);
+  return ERROR;
+}