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NAME

        shutdown - shut down part of a full-duplex connection

SYNOPSIS

        #include <sys/socket.h>
 
        int shutdown(int s, int how);

DESCRIPTION

        The  shutdown()  call causes all or part of a full-duplex connection on
        the socket associated with s to be shut down.  If how is SHUT_RD,  fur‐
        ther  receptions will be disallowed.  If how is SHUT_WR, further trans‐
        missions will be disallowed.  If how is SHUT_RDWR,  further  receptions
        and transmissions will be disallowed.
        On  success,  zero is returned.  On error, -1 is returned, and errno is
        set appropriately.

ERRORS

        EBADF  s is not a valid descriptor.
 
        ENOTCONN
               The specified socket is not connected.
 
        ENOTSOCK
               s is a file, not a socket.
        POSIX.1-2001, 4.4BSD (the shutdown() function call  first  appeared  in
        4.2BSD).

NOTES

        The  constants  SHUT_RD,  SHUT_WR,  SHUT_RDWR  have  the value 0, 1, 2,
        respectively, and are defined in <sys/socket.h> since glibc-2.1.91.
        connect(2), socket(2)