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#include <time.h>
#include <string.h>
#include <stdio.h>
#include <errno.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <termios.h>
#include <netinet/in.h>
#include <netdb.h>
#include <arpa/inet.h>
#include <fcntl.h>
#include "serversocket.h"
#include "exceptions.h"
Bu::ServerSocket::ServerSocket( int nPort, int nPoolSize ) :
nPort( nPort )
{
/* Create the socket and set it up to accept connections. */
struct sockaddr_in name;
/* Give the socket a name. */
name.sin_family = AF_INET;
name.sin_port = htons( nPort );
// I think this specifies who we will accept connections from,
// a good thing to make configurable later on
name.sin_addr.s_addr = htonl( INADDR_ANY );
startServer( name, nPoolSize );
}
Bu::ServerSocket::ServerSocket(const FString &sAddr,int nPort, int nPoolSize) :
nPort( nPort )
{
/* Create the socket and set it up to accept connections. */
struct sockaddr_in name;
/* Give the socket a name. */
name.sin_family = AF_INET;
name.sin_port = htons( nPort );
inet_aton( sAddr.getStr(), &name.sin_addr );
startServer( name, nPoolSize );
}
Bu::ServerSocket::~ServerSocket()
{
}
void Bu::ServerSocket::startServer( struct sockaddr_in &name, int nPoolSize )
{
/* Create the socket. */
nServer = socket( PF_INET, SOCK_STREAM, 0 );
if( nServer < 0 )
{
throw Bu::SocketException("Couldn't create a listen socket.");
}
int opt = 1;
setsockopt(
nServer,
SOL_SOCKET,
SO_REUSEADDR,
(char *)&opt,
sizeof( opt )
);
if( bind( nServer, (struct sockaddr *) &name, sizeof(name) ) < 0 )
{
throw Bu::SocketException("Couldn't bind to the listen socket.");
}
if( listen( nServer, nPoolSize ) < 0 )
{
throw Bu::SocketException(
"Couldn't begin listening to the server socket."
);
}
FD_ZERO( &fdActive );
/* Initialize the set of active sockets. */
FD_SET( nServer, &fdActive );
}
int Bu::ServerSocket::getSocket()
{
return nServer;
}
int Bu::ServerSocket::accept( int nTimeoutSec, int nTimeoutUSec )
{
fd_set fdRead = fdActive;
struct timeval xT;
xT.tv_sec = nTimeoutSec;
xT.tv_usec = nTimeoutUSec;
if( TEMP_FAILURE_RETRY(select( nServer+1, &fdRead, NULL, NULL, &xT )) < 0 )
{
throw SocketException(
"Error scanning for new connections: %s", strerror( errno )
);
}
if( FD_ISSET( nServer, &fdRead ) )
{
struct sockaddr_in clientname;
size_t size;
int nClient;
size = sizeof( clientname );
#ifdef __CYGWIN__
nClient = ::accept( nServer, (struct sockaddr *)&clientname,
(int *)&size
);
#else
nClient = ::accept( nServer, (struct sockaddr *)&clientname, &size );
#endif
if( nClient < 0 )
{
throw SocketException(
"Error accepting a new connection: %s", strerror( errno )
);
}
char tmpa[20];
inet_ntop( AF_INET, (void *)&clientname.sin_addr, tmpa, 20 );
//"New connection from host %s, port %hd.",
// tmpa, ntohs (clientname.sin_port) );
{
int flags;
flags = fcntl( nClient, F_GETFL, 0 );
flags |= O_NONBLOCK;
if( fcntl( nClient, F_SETFL, flags ) < 0)
{
throw SocketException(
"Error setting option on client socket: %s",
strerror( errno )
);
}
}
return nClient;
}
return -1;
}
int Bu::ServerSocket::getPort()
{
return nPort;
}
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