LISTEN(2)                  Linux Programmer's Manual                 LISTEN(2)

NAME <?><?>
       listen - listen for connections on a socket
       <?><?><?><?><?><?><?><?><?><?><?>

SYNOPSIS <?><?>
       #include <sys/socket.h>

       int listen(int s, int backlog);

DESCRIPTION <?><?>
       <?><?><?><?><?><?><?>,<?><?><?><?><?> socket(2)
       <?><?><?><?><?><?><?>,<?><?><?><?> listen
       <?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?>.
       <?><?><?><?><?><?><?> accept(2) <?><?><?><?>.  listen
       <?><?><?><?><?><?> SOCK_STREAM <?><?> SOCK_SEQPACKET
       <?><?><?><?><?><?>.

       <?><?> backlog
       <?><?><?><?><?><?><?><?><?><?><?><?><?><?>.<?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?>
       <?><?><?><?>,<?><?><?><?><?><?><?><?><?><?><?> ECONNREFUSED.
       <?><?>,<?><?><?><?><?><?><?><?><?><?>,<?><?><?><?><?><?><?><?><?><?><?><?>,<?><?><?><?><?>
       <?><?><?><?><?><?><?><?><?><?><?><?><?>.

NOTES <?><?>
       <?>TCP<?><?><?><?> backlog <?><?><?><?>Linux 2.2<?><?><?><?><?>.
       <?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?>,<?><?><?>
       <?><?><?><?><?><?><?><?>.<?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?><?>
       tcp_max_syn_backlog sysctl<?><?>
       <?><?><?>syncookies<?><?><?><?><?><?><?><?><?><?><?><?>,<?><?><?><?><?><?><?>.<?><?>
       tcp(7) <?><?><?><?><?><?><?>.


RETURN VALUE <?><?><?>
       <?><?><?><?><?><?><?><?><?>0.<?><?><?><?><?>-1,<?><?><?><?><?><?><?><?>.
       errno

ERRORS <?><?>
       EBADF  <?><?> s <?><?><?><?><?><?><?><?>.

       ENOTSOCK
              <?><?> s <?><?><?><?><?><?><?>.

       EOPNOTSUPP
              <?><?><?><?><?><?><?><?> listen <?><?>.

CONFORMING TO <?><?><?>
       Single Unix, 4.4BSD, POSIX 1003.1g.  listen
       <?><?><?><?><?><?><?><?><?>4.2BSD.

BUGS <?><?>
       <?><?><?><?><?><?><?><?> AF_INET, <?><?><?><?> backlog <?><?><?><?>
       SOMAXCONN (Linux 2.0&2.2<?><?>128),<?><?><?><?><?><?><?><?> SOMAXCONN
       <?><?>.  <?><?>BSD<?><?>(<?><?><?><?>BSD<?><?>)<?>backlog<?><?><?><?>5.

SEE ALSO <?><?>
       accept(2), connect(2), socket(2)


[<?><?><?><?><?><?>]
       byeyear <love_my_love@263.net >

[<?><?><?><?><?><?><?>]
       2002.01.27

<?><?><?>linux<?><?>man<?><?><?><?><?><?><?><?>:
       http://cmpp.linuxforum.net

<?>
       <?><?><?><?><?><?><?><?><?> man <?><?><?><?><?><?><?><?>
       <?><?> man <?><?><?><?><?><?>https://github.com/man-pages-zh/manpages-
       zh

BSD Man Page                     23 July 1993                        LISTEN(2)