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disconnectx(2) [mojave man page]

DISCONNECTX(2)						      BSD System Calls Manual						    DISCONNECTX(2)

disconnectx -- disconnects a connection on a socket SYNOPSIS
#include <sys/socket.h> int disconnectx(int socket, sae_associd_t associd, sae_connid_t connid); DESCRIPTION
The parameter socket is a socket. The communication domain of the socket determines the availability and behavior of disconnectx(). For connection-oriented socket, disconnectx() is analogous to shutdown(2) with SHUT_RDWR issued on the socket. For connectionless socket, it dis- associates any existing association to the peer socket. The parameter associd specifies the association identifier. It should be set to SAE_ASSOCID_ANY. The parameter connid should be set to SAE_CONNID_ANY. NOTES
disconnectx() is currently supported only on AF_INET and AF_INET6 sockets of type SOCK_DGRAM and SOCK_STREAM. RETURN VALUES
The disconnectx() function returns the value 0 if successful; otherwise the value of -1 is returned and the global integer variable errno is set to indicate the error. ERRORS
The disconnectx() system call succeeds unless: [EALREADY] Operation already in progress. [EBADF] Socket is not a valid descriptor. [EINVAL] The associd or connid argument is invalid or the underlying protocol is no longer attached to socket. [ENOTCONN] The socket is not connected. [ENOTSOCK] Socket is a file, not a socket. SEE ALSO
connect(2), connectx(2), socket(2), compat(5) HISTORY
The disconnectx() function call appeared in Darwin 15.0.0 Darwin April 10, 2015 Darwin

Check Out this Related Man Page

LISTEN(2)						      BSD System Calls Manual							 LISTEN(2)

listen -- listen for connections on a socket SYNOPSIS
#include <sys/socket.h> int listen(int socket, int backlog); DESCRIPTION
Creation of socket-based connections requires several operations. First, a socket is created with socket(2). Next, a willingness to accept incoming connections and a queue limit for incoming connections are specified with listen(). Finally, the connections are accepted with accept(2). The listen() call applies only to sockets of type SOCK_STREAM. The backlog parameter defines the maximum length for the queue of pending connections. If a connection request arrives with the queue full, the client may receive an error with an indication of ECONNREFUSED. Alternatively, if the underlying protocol supports retransmission, the request may be ignored so that retries may succeed. RETURN VALUES
The listen() function returns the value 0 if successful; otherwise the value -1 is returned and the global variable errno is set to indicate the error. ERRORS
listen() will fail if: [EACCES] The current process has insufficient privileges. [EBADF] The argument socket is not a valid file descriptor. [EDESTADDRREQ] The socket is not bound to a local address and the protocol does not support listening on an unbound socket. [EINVAL] socket is already connected. [ENOTSOCK] The argument socket does not reference a socket. [EOPNOTSUPP] The socket is not of a type that supports the operation listen(). SEE ALSO
accept(2), connect(2), connectx(2), socket(2) BUGS
The backlog is currently limited (silently) to 128. HISTORY
The listen() function call appeared in 4.2BSD. 4.2 Berkeley Distribution March 18, 2015 4.2 Berkeley Distribution

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