1SHUTDOWN(3P) POSIX Programmer's Manual SHUTDOWN(3P)
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6 This manual page is part of the POSIX Programmer's Manual. The Linux
7 implementation of this interface may differ (consult the corresponding
8 Linux manual page for details of Linux behavior), or the interface may
9 not be implemented on Linux.
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12 shutdown - shut down socket send and receive operations
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15 #include <sys/socket.h>
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17 int shutdown(int socket, int how);
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21 The shutdown() function shall cause all or part of a full-duplex con‐
22 nection on the socket associated with the file descriptor socket to be
23 shut down.
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25 The shutdown() function takes the following arguments:
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27 socket Specifies the file descriptor of the socket.
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29 how Specifies the type of shutdown. The values are as follows:
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31 SHUT_RD
32 Disables further receive operations.
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34 SHUT_WR
35 Disables further send operations.
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37 SHUT_RDWR
38 Disables further send and receive operations.
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42 The shutdown() function disables subsequent send and/or receive opera‐
43 tions on a socket, depending on the value of the how argument.
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46 Upon successful completion, shutdown() shall return 0; otherwise, -1
47 shall be returned and errno set to indicate the error.
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50 The shutdown() function shall fail if:
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52 EBADF The socket argument is not a valid file descriptor.
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54 EINVAL The how argument is invalid.
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56 ENOTCONN
57 The socket is not connected.
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59 ENOTSOCK
60 The socket argument does not refer to a socket.
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63 The shutdown() function may fail if:
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65 ENOBUFS
66 Insufficient resources were available in the system to perform
67 the operation.
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70 The following sections are informative.
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73 None.
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76 None.
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82 None.
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85 getsockopt(), read(), recv(), recvfrom(), recvmsg(), select(), send(),
86 sendto(), setsockopt(), socket(), write(), the Base Definitions volume
87 of IEEE Std 1003.1-2001, <sys/socket.h>
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90 Portions of this text are reprinted and reproduced in electronic form
91 from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
92 -- Portable Operating System Interface (POSIX), The Open Group Base
93 Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
94 Electrical and Electronics Engineers, Inc and The Open Group. In the
95 event of any discrepancy between this version and the original IEEE and
96 The Open Group Standard, the original IEEE and The Open Group Standard
97 is the referee document. The original Standard can be obtained online
98 at http://www.opengroup.org/unix/online.html .
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102IEEE/The Open Group 2003 SHUTDOWN(3P)