* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
+#include <sstream>
+
#include "server.hxx"
+#include "log.hxx"
namespace libt2n
{
-void connection::check_timeout()
+server_connection::server_connection(int _timeout)
+ : connection()
{
- if (timeout != -1 && last_action_time+timeout >= time(NULL))
- this->close();
+ set_timeout(_timeout);
+ reset_timeout();
+ connection_id=0;
+ my_server=0;
}
-void connection::reset_timeout()
+
+/// get pointer to logging stream, returns NULL if no logging needed
+std::ostream* server_connection::get_logstream(log_level_values level)
{
- last_action_time=time(NULL);
+ if (my_server != NULL)
+ {
+ std::ostream* ostr=my_server->get_logstream(level);
+ if (ostr != NULL)
+ (*ostr) << "connection " << get_id() << ": ";
+ return ostr;
+ }
+ else
+ return NULL;
}
-bool connection::get_packet(std::string& data, unsigned int& conn_id)
+/// check if timeout is expired, close connection if so
+void server_connection::check_timeout()
{
- // max packet size is unsigned int
-
- // no size information -> no packet
- if (buffer.size() < sizeof(unsigned int))
- return false;
-
- unsigned int psize=*((unsigned int*)(buffer.data()));
-
- // enough data for one packet in buffer?
- if (buffer.size() < sizeof(unsigned int)+psize)
- return false;
+ if (timeout != -1 && last_action_time+timeout < time(NULL))
+ {
+ LOGSTREAM(debug,"timeout on connection " << connection_id << ", closing");
+ this->close();
+ }
+}
- data.assign(buffer,sizeof(unsigned int),psize);
- buffer.erase(0,sizeof(unsigned int)+psize);
+/// reset the timeout, e.g. if something is received
+void server_connection::reset_timeout()
+{
+ last_action_time=time(NULL);
+}
- return true;
+server::server()
+{
+ set_default_timeout(30);
+ set_logging(NULL,none);
+ next_id=1;
}
server::~server()
{
- std::map<unsigned int, connection*>::iterator ie=connections.end();
- for(std::map<unsigned int, connection*>::iterator i=connections.begin(); i != ie; i++)
+ std::map<unsigned int, server_connection*>::iterator ie=connections.end();
+ for(std::map<unsigned int, server_connection*>::iterator i=connections.begin(); i != ie; i++)
delete i->second;
}
-int server::add_connection(connection* newconn)
+int server::add_connection(server_connection* newconn)
{
- connections[next_id]=newconn;
- return next_id++;
+ unsigned int cid=next_id++;
+ newconn->set_id(cid);
+ newconn->set_server(this);
+ connections[cid]=newconn;
+
+ LOGSTREAM(debug,"new connection accepted, id: " << cid);
+
+ return cid;
+}
+
+/// activate logging to the given stream. everything above the given level is logged.
+void server::set_logging(std::ostream *_logstream, log_level_values _log_level)
+{
+ log_level=_log_level;
+ logstream=_logstream;
}
/**
- Gets a connection by id
+ @brief Gets a connection by id
- \param conn_id Connection ID
+ @param conn_id Connection ID
- \retval Pointer to connection object
+ @retval Pointer to connection object
*/
-connection* server::get_connection(unsigned int conn_id)
+server_connection* server::get_connection(unsigned int conn_id)
{
- std::map<unsigned int, connection*>::iterator p=connections.find(conn_id);
+ std::map<unsigned int, server_connection*>::iterator p=connections.find(conn_id);
if (p==connections.end())
return NULL;
else
return p->second;
}
-void server::check_timeout()
+/// check for timeouts, remove closed connections. don't forget to call this from time to time.
+void server::cleanup()
{
- std::map<unsigned int, connection*>::iterator ie=connections.end();
- for(std::map<unsigned int, connection*>::iterator i=connections.begin(); i != ie; i++)
+ std::map<unsigned int, server_connection*>::iterator ie=connections.end();
+ for(std::map<unsigned int, server_connection*>::iterator i=connections.begin(); i != ie; i++)
i->second->check_timeout();
-}
-void server::fill_connection_buffers(void)
-{
- std::map<unsigned int, connection*>::iterator ie=connections.end();
- for(std::map<unsigned int, connection*>::iterator i=connections.begin(); i != ie; i++)
- if (!i->second->is_closed())
- i->second->fill_buffer();
+ for(std::map<unsigned int, server_connection*>::iterator i=connections.begin(); i != ie;)
+ {
+ if (i->second->is_closed() && !i->second->packet_available())
+ {
+ // closed and no usable data in buffer -> remove
+ LOGSTREAM(debug,"removing conneciton " << i->first << " because it is closed and no more data waiting");
+
+ delete i->second;
+ connections.erase(i);
+ i=connections.begin();
+ ie=connections.end();
+ }
+ else
+ i++;
+ }
}
+/** @brief get a complete data packet from any client. The packet is removed from the
+ connection buffer.
+ @param[out] data the data package
+ @param[out] conn_id the connection id we got this packet from
+ @retval true if packet found
+*/
bool server::get_packet(std::string& data, unsigned int& conn_id)
{
// todo: this is somehow unfair: the first connections in the map get checked more
// often than the others and can thus block them out
- std::map<unsigned int, connection*>::iterator ie=connections.end();
- for(std::map<unsigned int, connection*>::iterator i=connections.begin(); i != ie; i++)
- if (i->second->get_packet(data,conn_id))
+ std::map<unsigned int, server_connection*>::iterator ie=connections.end();
+ for(std::map<unsigned int, server_connection*>::iterator i=connections.begin(); i != ie; i++)
+ if (i->second->get_packet(data))
+ {
+ LOGSTREAM(debug,"got packet (" << data.size() << " bytes) from connection " << i->first);
+
+ conn_id=i->first;
return true;
+ }
+
+ return false;
}
-void server::log(log_level_values level, const char* message)
+/// get pointer to logging stream, returns NULL if no logging needed
+std::ostream* server::get_logstream(log_level_values level)
{
- if (logstream && level >= log_level)
- (*logstream) << message << std::endl;
+ if (logstream && log_level >= level)
+ return logstream;
+ else
+ return NULL;
}
-
};