Ethernet_custom_UDP_TTL.patch

diff -rupN Ethernet//EthernetUdp.cpp Ethernet_udpttl//EthernetUdp.cpp
--- Ethernet//EthernetUdp.cpp   2012-05-22 07:54:20.000000000 +0200
+++ Ethernet_udpttl//EthernetUdp.cpp    2012-12-29 14:13:24.795716711 +0100
@@ -98,6 +98,12 @@ int EthernetUDP::beginPacket(IPAddress i
   return startUDP(_sock, rawIPAddress(ip), port);
 }

+int EthernetUDP::beginPacket(IPAddress ip, uint16_t port, uint8_t ttl)
+{
+  _offset = 0;
+  return startUDP(_sock, rawIPAddress(ip), port, ttl);
+}
+
 int EthernetUDP::endPacket()
 {
   return sendUDP(_sock);
diff -rupN Ethernet//EthernetUdp.h Ethernet_udpttl//EthernetUdp.h
--- Ethernet//EthernetUdp.h 2012-05-22 07:54:20.000000000 +0200
+++ Ethernet_udpttl//EthernetUdp.h  2012-12-29 14:13:59.419716722 +0100
@@ -60,6 +60,7 @@ public:
   // Start building up a packet to send to the remote host specific in ip and port
   // Returns 1 if successful, 0 if there was a problem with the supplied IP address or port
   virtual int beginPacket(IPAddress ip, uint16_t port);
+  virtual int beginPacket(IPAddress ip, uint16_t port, uint8_t ttl);
   // Start building up a packet to send to the remote host specific in host and port
   // Returns 1 if successful, 0 if there was a problem resolving the hostname or port
   virtual int beginPacket(const char *host, uint16_t port);
diff -rupN Ethernet//utility/socket.cpp Ethernet_udpttl//utility/socket.cpp
--- Ethernet//utility/socket.cpp    2012-12-29 14:06:04.595716561 +0100
+++ Ethernet_udpttl//utility/socket.cpp 2012-12-29 14:10:34.027716652 +0100
@@ -376,6 +376,13 @@ int startUDP(SOCKET s, uint8_t* addr, ui
   }
 }

+int startUDP(SOCKET s, uint8_t* addr, uint16_t port, uint8_t ttl)
+{
+  if (!startUDP(s, addr, port)) return 0;
+  W5100.writeSnTTL(s, ttl);
+  return 1;
+}
+
 int sendUDP(SOCKET s)
 {
   W5100.execCmdSn(s, Sock_SEND);
diff -rupN Ethernet//utility/socket.h Ethernet_udpttl//utility/socket.h
--- Ethernet//utility/socket.h  2012-05-22 07:54:20.000000000 +0200
+++ Ethernet_udpttl//utility/socket.h   2012-12-29 14:10:56.199716660 +0100
@@ -24,6 +24,7 @@ extern uint16_t igmpsend(SOCKET s, const
   @return 1 if the datagram was successfully set up, or 0 if there was an error
 */
 extern int startUDP(SOCKET s, uint8_t* addr, uint16_t port);
+extern int startUDP(SOCKET s, uint8_t* addr, uint16_t port, uint8_t ttl);
 /*
   @brief This function copies up to len bytes of data from buf into a UDP datagram to be
   sent later by sendUDP.  Allows datagrams to be built up from a series of bufferData calls.