make udp support for radio-dish

src/udp_engine.hpp

@@ -0,0 +1,62 @@
+
+#ifndef __ZMQ_UDP_ENGINE_HPP_INCLUDED__
+#define __ZMQ_UDP_ENGINE_HPP_INCLUDED__
+
+#include "io_object.hpp"
+#include "i_engine.hpp"
+#include "address.hpp"
+#include "udp_address.hpp"
+
+#define MAX_UDP_MSG 8192
+
+namespace zmq
+{
+    class io_thread_t;
+    class session_base_t;
+
+    class udp_engine_t : public io_object_t, public i_engine
+    {
+        public:
+            udp_engine_t ();
+            ~udp_engine_t ();
+
+            int init (address_t *address_, bool send_, bool recv_);
+
+            //  i_engine interface implementation.
+            //  Plug the engine to the session.
+            void plug (zmq::io_thread_t *io_thread_, class session_base_t *session_);
+
+            //  Terminate and deallocate the engine. Note that 'detached'
+            //  events are not fired on termination.
+            void terminate ();
+
+            //  This method is called by the session to signalise that more
+            //  messages can be written to the pipe.
+            void restart_input ();
+
+            //  This method is called by the session to signalise that there
+            //  are messages to send available.
+            void restart_output ();
+
+            void zap_msg_available () {};
+
+            void in_event ();
+            void out_event ();
+
+        private:
+
+            bool plugged;
+
+            fd_t fd;
+            session_base_t* session;
+            handle_t handle;
+            address_t *address;
+
+            unsigned char out_buffer[MAX_UDP_MSG];
+            unsigned char in_buffer[MAX_UDP_MSG];
+            bool send_enabled;
+            bool recv_enabled;
+    };
+}
+
+#endif