#include <iostream>
#include <string>
#include <map>
+#include <vector>
+#include <list>
+
+#include <boost/function.hpp>
+
+#include "connection.hxx"
+#include "types.hxx"
namespace libt2n
{
-class connection
+class server;
+
+/**
+ @brief connection on a server
+
+ on a server every connection to a client is represented as server_connection.
+ a server_connection is abstract, derived classes like socket_server_connection are used.
+*/
+class server_connection : public connection
{
+ friend class server;
+
private:
int timeout;
int last_action_time;
- bool closed;
- std::string buffer;
+ unsigned int connection_id;
+
+ void set_server(server* _my_server)
+ { my_server=_my_server; }
+
+ void set_id(unsigned int _connection_id)
+ { connection_id=_connection_id; }
+
+ /// vector initialized for all callback-types, all elements in each list will be called
+ std::vector<std::list<boost::function<void ()> > > callbacks;
protected:
- connection(int _timeout)
- {
- set_timeout(_timeout);
- reset_timeout();
- closed=false;
- }
+ server *my_server;
+
+ server_connection(int _timeout);
+
+ std::ostream* get_logstream(log_level_values level);
+
+ void do_callbacks(callback_event_type event);
public:
- ~connection()
- { this->close(); }
+ virtual ~server_connection();
void check_timeout();
void reset_timeout();
void set_timeout(int _timeout)
{ timeout=_timeout; }
- bool is_closed()
- { return closed; }
+ /// get the id of this connection within the server object
+ unsigned int get_id()
+ { return connection_id; }
- virtual void close()
- { closed=true; }
+ void close();
- virtual void fill_buffer(void)=0;
-
- bool get_packet(std::string& data, unsigned int& conn_id);
- virtual void write(const std::string& data)=0;
+ void add_callback(callback_event_type event, const boost::function<void ()>& func);
};
+/**
+ @brief server base class
+
+ constitutes a server. is abstract, use derived classes like socket_server.
+*/
class server
{
- public:
- enum log_level_values { none=0, error=1, debug=2 };
-
private:
int default_timeout;
log_level_values log_level;
std::ostream *logstream;
+ /// vector initialized for all callback-types, all elements in each list will be called
+ std::vector<std::list<boost::function<void (unsigned int)> > > callbacks;
+
unsigned int next_id;
- std::map<unsigned int, connection*> connections;
protected:
- server()
- {
- set_default_timeout(30);
- set_logging(NULL,none);
- next_id=0;
- }
+ std::map<unsigned int, server_connection*> connections;
+
+ server();
+
+ virtual bool fill_connection_buffers(void)=0;
+
+ int add_connection(server_connection* newconn);
+
+ void do_callbacks(callback_event_type event, unsigned int conn_id);
public:
virtual ~server();
+ /// set the default timeout for new client connections
void set_default_timeout(int _default_timeout)
{ default_timeout=_default_timeout; }
- void set_logging(std::ostream *_logstream, log_level_values _log_level)
- {
- log_level=_log_level;
- logstream=_logstream;
- }
+ /// get the current default timeout for client connections
+ int get_default_timeout(void)
+ { return default_timeout; }
- connection* get_connection(unsigned int conn_id);
+ void set_logging(std::ostream *_logstream, log_level_values _log_level);
- virtual void fill_buffer(long long usec_timeout=-1)=0;
- void check_timeout();
+ server_connection* get_connection(unsigned int conn_id);
- bool get_packet(std::string& data, unsigned int& conn_id);
+ void add_callback(callback_event_type event, const boost::function<void (unsigned int)>& func);
- void fill_connection_buffers(void);
+ /** @brief look for new data and store it in the local buffer
+ @param usec_timeout wait until new data is found, max timeout usecs.
+ -1: wait endless
+ 0: return instantly
+ @param usec_timeout_remaining if non-NULL the function will write the
+ not used time to the given target
+ @retval true if new data was found (does not mean that the received data
+ is a complete packet though)
+ */
+ virtual bool fill_buffer(long long usec_timeout=-1, long long* timeout_remaining=NULL)=0;
- protected:
- void log(log_level_values level, const std::string& message)
- { log(level,message.c_str()); }
- void log(log_level_values level, const char* message);
+ void cleanup();
+
+ /** @brief get a complete data packet from any client. The packet is removed from the
+ connection buffer.
+ @param[out] data the data package
+ @retval true if packet found
+ */
+ bool get_packet(std::string& data)
+ { unsigned int x; return get_packet(data,x); }
+
+ bool get_packet(std::string& data, unsigned int& conn_id);
+
+ std::ostream* get_logstream(log_level_values level);
};
}