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+>SHUTDOWN(2) System Calls Manual SHUTDOWN(2)
+
+NAME
+ shutdown - shut down part of a full-duplex connection
+
+SYNOPSIS
+ #include <sys/types.h>
+ #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, further
+ receives will be disallowed. If how is SHUT_WR, further sends will be
+ disallowed. If how is SHUT_RDWR, further sends and receives will be dis-
+ allowed.
+
+RETURN VALUES
+ A 0 is returned if the call succeeds, -1 if it fails.
+
+ERRORS
+ The call succeeds unless:
+
+ [EINVAL] how is not SHUT_RD, SHUT_WR, or SHUT_RDWR.
+
+ [EBADF] s is not a valid descriptor.
+
+ [ENOTSOCK] s is a file, not a socket.
+
+ [ENOTCONN] The specified socket is not connected.
+
+SEE ALSO
+ connect(2), socket(2)
+
+HISTORY
+ The shutdown() function call appeared in 4.2BSD. The how arguments used
+ to be simply 0, 1, and 2, but now have named values as specified by
+ X/Open Portability Guide Issue 4 (``XPG4'').
+
+BSD June 4, 1993 BSD
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