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TCP_DONE(3) libdill Library Functions TCP_DONE(3) NAME tcp_done - half-closes a TCP connection SYNOPSIS #include <libdill.h> int tcp_done( int s, int64_t deadline); DESCRIPTION TCP protocol is a reliable bytestream protocol for transporting data over network. It is defined in RFC 793. This function closes the outbound half of TCP connection. Technically, it sends a FIN packet to the peer. This will, in turn, cause the peer to get EPIPE error after it has received all the data. s: The TCP connection handle. deadline: A point in time when the operation should time out, in mil- liseconds. Use the now function to get your current point in time. 0 means immediate timeout, i.e., perform the operation if possible or re- turn without blocking if not. -1 means no deadline, i.e., the call will block forever if the operation cannot be performed. This function is not available if libdill is compiled with --dis- able-sockets option. RETURN VALUE In case of success the function returns 0. In case of error it returns -1 and sets errno to one of the values below. ERRORS • EBADF: Invalid handle. • ECANCELED: Current coroutine was canceled. • ENOTSUP: The handle does not support this operation. • EPIPE: The connection was already half-closed. • ETIMEDOUT: Deadline was reached. EXAMPLE struct ipaddr addr; ipaddr_local(&addr, NULL, 5555, 0); int ls = tcp_listen(&addr, 10); int s = tcp_accept(ls, NULL, -1); bsend(s, "ABC", 3, -1); char buf[3]; brecv(s, buf, sizeof(buf), -1); tcp_close(s); tcp_close(ls); SEE ALSO brecv(3) brecvl(3) bsend(3) bsendl(3) now(3) tcp_accept(3) tcp_ac- cept_mem(3) tcp_close(3) tcp_connect(3) tcp_connect_mem(3) tcp_fromfd(3) tcp_fromfd_mem(3) tcp_listen(3) tcp_listen_mem(3) tcp_listener_fromfd(3) tcp_listener_fromfd_mem(3) libdill TCP_DONE(3)
NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | EXAMPLE | SEE ALSO
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