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The socket ID returned by NetSock_Open()/socket() when the socket is created or by NetSock_Accept()/accept() when a connection is accepted.
perrp_err
Pointer to variable that will receive the return error code from this function:
NET_SOCK_ERR_NONE
NET_SOCK_ERR_NOT_USED
NET_SOCK_ERR_CLOSED
NET_SOCK_ERR_INVALID_SOCK
NET_SOCK_ERR_INVALID_FAMILY
NET_SOCK_ERR_INVALID_STATE
NET_SOCK_ERR_CLOSE_IN_PROGRESS
NET_SOCK_ERR_CONN_SIGNAL_TIMEOUT
NET_SOCK_ERR_CONN_FAIL
NET_SOCK_ERR_FAULT
NET_CONN_ERR_NULL_PTR
NET_CONN_ERR_NOT_USED
NET_CONN_ERR_INVALID_CONN
NET_CONNINIT_ERR_INVALIDNOT_ADDR_LENCOMPLETED
NET_CONN_ERR_ADDRFAULT_INLOCK_USE
NET_ERR_INIT_INCOMPLETE
NET_OS_ERR_LOCKACQUIRE
Returned Value
NET_SOCK_BSD_ERR_NONE/0, if successful;
NET_SOCK_BSD_ERR_CLOSE/-1, otherwise.
Required Configuration
NetSock_Close() is available only if either NET_CFG_TRANSPORT_LAYER_SEL is configured for TCP (see section D-12-1) and/or NET_UDP_CFG_APP_API_SEL is configured for sockets (see section D-13-1).
In addition, close() is available only if NET_BSD_CFG_API_EN is enabled (see section D-17-1)None.
Notes / Warnings
After closing a socket, no further operations should be performed with the socket.