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Full Discussion: opening ports
Special Forums Cybersecurity opening ports Post 16840 by dryheat on Thursday 7th of March 2002 10:08:45 AM
Old 03-07-2002
This followup might be useful for others who might be moving existing code from Windows. The IP ports issues were the least of my problems. I was porting this code from Windows. Win32 ignores the first parameter of the select() system call. I had n=1. In Linux that must be the *value* of the highest socket descriptor +1, *not* the number of sockets to be tested, or select will not return. Typically, that value would be reassigned anytime a new socket descriptor is allocated. That assumes that the system will allocate always-increasing socket descriptor values. I stuck INT_MAX in there and it works fine. It probably causes a little extra processing to traverse every possible socket descriptor value in the fd_sets, but it simplifies the code.

Thanks for the help.
 

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glutButtonBoxFunc(3GLUT)					       GLUT						  glutButtonBoxFunc(3GLUT)

NAME
glutButtonBoxFunc - sets the dial & button box button callback for the current window. SYNTAX
#include <GLUT/glut.h> void glutButtonBoxFunc(void (*func)(int button, int state)); ARGUMENTS
func The new button box callback function. DESCRIPTION
glutButtonBoxFunc sets the dial & button box button callback for the current window. The dial & button box button callback for a window is called when the window has dial & button box input focus (normally, when the mouse is in the window) and the user generates dial & button box button presses. The button parameter will be the button number (starting at one). The number of available dial & button box buttons can be determined with glutDeviceGet(GLUT_NUM_BUTTON_BOX_BUTTONS). The state is either GLUT_UP or GLUT_DOWN indicating whether the callback was due to a release or press respectively. Registering a dial & button box button callback when a dial & button box device is not available is ineffectual and not an error. In this case, no dial & button box button callbacks will be generated. Passing NULL to glutButtonBoxFunc disables the generation of dial & button box button callbacks. When a new window is created, no dial & button box button callback is initially registered. SEE ALSO
glutDialsFunc, glutDeviceGet, glutSpaceballButtonFunc, glutTabletButtonFunc AUTHOR
Mark J. Kilgard (mjk@nvidia.com) GLUT
3.7 glutButtonBoxFunc(3GLUT)
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