Keith Winstein
86 lines
2.9 KiB
C++
86 lines
2.9 KiB
C++
#ifndef NETWORK_TRANSPORT_HPP
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#define NETWORK_TRANSPORT_HPP
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#include <string>
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#include <signal.h>
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#include <time.h>
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#include <list>
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#include <vector>
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#include "network.hpp"
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#include "transportsender.hpp"
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#include "transportfragment.hpp"
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using namespace std;
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namespace Network {
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template <class MyState, class RemoteState>
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class Transport
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{
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private:
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/* the underlying, encrypted network connection */
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Connection connection;
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/* sender side */
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TransportSender<MyState> sender;
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/* helper methods for recv() */
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void process_throwaway_until( uint64_t throwaway_num );
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/* simple receiver */
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list< TimestampedState<RemoteState> > received_states;
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RemoteState last_receiver_state; /* the state we were in when user last queried state */
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FragmentAssembly fragments;
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bool verbose;
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public:
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Transport( MyState &initial_state, RemoteState &initial_remote );
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Transport( MyState &initial_state, RemoteState &initial_remote,
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const char *key_str, const char *ip, int port );
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/* Send data or an ack if necessary. */
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void tick( void ) { sender.tick(); }
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/* Returns the number of ms to wait until next possible event. */
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int wait_time( void ) { return sender.wait_time(); }
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/* Blocks waiting for a packet. */
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void recv( void );
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/* Find diff between last receiver state and current remote state, then rationalize states. */
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string get_remote_diff( void );
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/* Shut down other side of connection. */
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/* Illegal to change current_state after this. */
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void start_shutdown( void ) { sender.start_shutdown(); }
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bool shutdown_in_progress( void ) { return sender.get_shutdown_in_progress(); }
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bool shutdown_acknowledged( void ) { return sender.get_shutdown_acknowledged(); }
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bool shutdown_ack_timed_out( void ) { return sender.shutdown_ack_timed_out(); }
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bool attached( void ) { return connection.get_attached(); }
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/* Other side has requested shutdown and we have sent one ACK */
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bool counterparty_shutdown_ack_sent( void ) { return sender.get_counterparty_shutdown_acknowledged(); }
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int port( void ) { return connection.port(); }
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string get_key( void ) { return connection.get_key(); }
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MyState &get_current_state( void ) { return sender.get_current_state(); }
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void set_current_state( const MyState &x ) { sender.set_current_state( x ); }
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typename list< TimestampedState<RemoteState > >::iterator begin( void ) { return received_states.begin(); }
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typename list< TimestampedState<RemoteState > >::iterator end( void ) { return received_states.end(); }
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uint64_t get_remote_state_num( void ) { return received_states.back().num; }
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const TimestampedState<RemoteState> & get_latest_remote_state( void ) const { return received_states.back(); }
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int fd( void ) { return connection.fd(); }
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void set_verbose( void ) { sender.set_verbose(); verbose = true; }
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uint64_t timeout( void ) { return connection.timeout(); }
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};
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}
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#endif
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