resources/net/udp.h

   1 #ifndef _UDP_H_
   2 #define _UDP_H_
   3
   4 #include "transport_layer.h"
   5 #include "ipv4_addr.h"
   6
   7 namespace net {
   8         class udp : public transport_layer {
   9         private:
  10                 list<int> ports;
  11                 list<delegate<void, const ipv4_addr&, u16, const buffer &> > listeners;
  12
  13                 int last_port;
  14
  15                 void receive(const ipv4_addr &, const buffer&);
  16         public:
  17                 udp() : last_port(49152) { }
  18
  19                 typedef delegate<void, const ipv4_addr &, u16, const buffer &> port_listener;
  20                 void set_internet_layer(p<internet_layer> x) {
  21                         down = x;
  22                         down->listen(17, delegate<void, const ipv4_addr&, const buffer&>::method(this, &udp::receive));
  23                 }
  24
  25                 void send(const ipv4_addr&, u16, u16, const buffer &);
  26                 void listen(u16, port_listener);
  27                 void remove_listener(u16, port_listener);
  28
  29                 int acquire_port() {
  30                         return last_port++;
  31                 }
  32
  33                 void release_port(int) { }
  34
  35                 p<client_socket> create_client();
  36                 p<server_socket> create_server(int port);
  37         };
  38 }
  39
  40 #endif