Added PacketSender class.

include/ip.h

@@ -38,7 +38,7 @@ namespace Tins {
         void dest_address(uint32_t ip);
         
         /* Virtual methods */
-        uint32_t header_size();
+        uint32_t header_size() const;
         void write_serialization(uint8_t *buffer, uint32_t total_sz);
     private:
         struct iphdr {

include/packetsender.h

@@ -0,0 +1,29 @@
+#ifndef __PACKET_SENDER_H
+#define __PACKET_SENDER_H
+
+
+#include <map>
+#include <stdint.h>
+#include "pdu.h"
+
+namespace Tins {
+
+    class PacketSender {
+    public:
+        /* Opens a socket, using flag as protocol family. 
+         * Return true if it was possible to open it(or it was already open),
+         * false otherwise.  */
+        bool open_socket(uint32_t flag);
+        
+        bool close_socket(uint32_t flag);
+        
+        bool send(PDU *pdu);
+    private:
+        typedef std::map<uint32_t, int> SocketMap;
+        bool write(int sock, uint8_t *buffer, uint32_t size);
+        
+        SocketMap _sockets;
+    };
+};
+
+#endif

include/pdu.h

@@ -27,7 +27,7 @@ namespace Tins {
         void inner_pdu(PDU *next_pdu);
         
         /* Serializes the whole chain of PDU's, including this one. */
-        uint8_t *serialize();
+        uint8_t *serialize(uint32_t &sz);
         
         /* Serialize this PDU storing the result in buffer. */
         void serialize(uint8_t *buffer, uint32_t total_sz);