From 28e08c18929a9841cd36f6ba726048e10fe4168e Mon Sep 17 00:00:00 2001
From: patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3>
Date: Fri, 30 Nov 2007 23:15:06 +0000
Subject: Basic DHPC client functionality

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@419 42af7a65-404d-4744-a932-0658087f49c3
---
 nuttx/netutils/dhcpd/dhcpd.c | 20 ++++++++++++++------
 1 file changed, 14 insertions(+), 6 deletions(-)

(limited to 'nuttx/netutils/dhcpd/dhcpd.c')

diff --git a/nuttx/netutils/dhcpd/dhcpd.c b/nuttx/netutils/dhcpd/dhcpd.c
index 331d945a9..f160dcc21 100644
--- a/nuttx/netutils/dhcpd/dhcpd.c
+++ b/nuttx/netutils/dhcpd/dhcpd.c
@@ -692,8 +692,8 @@ static inline int dhcpd_socket(void)
   int sockfd;
 #if defined(HAVE_SO_REUSEADDR) || defined(HAVE_SO_BROADCAST)
   int optval;
-#endif
   int ret;
+#endif
 
   /* Create a socket to listen for requests from DHCP clients */
 
@@ -815,6 +815,7 @@ static int dhcpd_sendpacket(int bbroadcast)
   struct sockaddr_in addr;
   in_addr_t ipaddr;
   int sockfd;
+  int len;
   int ret = ERROR;
 
   /* Determine which address to respond to (or if we need to broadcast the response) */
@@ -850,8 +851,10 @@ static int dhcpd_sendpacket(int bbroadcast)
       addr.sin_port        = HTONS(DHCP_CLIENT_PORT);
       addr.sin_addr.s_addr = ipaddr;
 
-      ret = sendto(sockfd,
-                   &g_state.ds_outpacket, sizeof(struct dhcpmsg_s), 0,
+      /* Send the minimum sized packet that includes the END option */
+
+      len = (g_state.ds_optend - (uint8*)&g_state.ds_outpacket) + 1;
+      ret = sendto(sockfd, &g_state.ds_outpacket, len, 0,
                    (struct sockaddr *)&addr, sizeof(struct sockaddr_in));
       close(sockfd);
     }
@@ -1031,9 +1034,8 @@ static inline int dhcpd_request(void)
            * already offered to the client. 
            */
 
-          if (g_state.ds_optserverip == g_state.ds_serverip &&
-              g_state.ds_optreqip != 0 &&
-              g_state.ds_optreqip == ipaddr)
+          if (g_state.ds_optserverip == ntohl(g_state.ds_serverip) &&
+             (g_state.ds_optreqip != 0 || g_state.ds_optreqip == ipaddr))
             {
               response = DHCPACK;
             }
@@ -1278,6 +1280,12 @@ int dhcpd_run(void)
           continue;
         }
 
+#ifdef CONFIG_NETUTILS_DHCPD_HOST
+      /* Get the poor little uC a change to get its recvfrom in place */
+
+      sleep(2);
+#endif
+
       /* Now process the incoming DHCP message by its message type */
 
       switch (g_state.ds_optmsgtype)
-- 
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