FreeBSD Manual Pages
TCP_ACCEPT(3) libdill Library Functions TCP_ACCEPT(3) NAME tcp_accept - accepts an incoming TCP connection SYNOPSIS #include <libdill.h> int tcp_accept( int s, struct ipaddr* addr, int64_t deadline); DESCRIPTION TCP protocol is a reliable bytestream protocol for transporting data over network. It is defined in RFC 793. This function accepts an incoming TCP connection. s: Socket created by tcp_listen. addr: Out parameter. IP address of the connecting endpoint. Can be NULL. 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. The socket can be cleanly shut down using tcp_close function. This function is not available if libdill is compiled with --dis- able-sockets option. RETURN VALUE In case of success the function returns handle of the new connection. In case of error it returns -1 and sets errno to one of the values be- low. ERRORS • EBADF: Invalid handle. • ECANCELED: Current coroutine was canceled. • EMFILE: The maximum number of file descriptors in the process are al- ready open. • ENFILE: The maximum number of file descriptors in the system are al- ready open. • ENOMEM: Not enough memory. • ENOTSUP: The handle does not support this operation. • 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) hclose(3) now(3) tcp_ac- cept_mem(3) tcp_close(3) tcp_connect(3) tcp_connect_mem(3) tcp_done(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_ACCEPT(3)
NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | EXAMPLE | SEE ALSO
Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=tcp_accept&sektion=3&manpath=FreeBSD+Ports+15.0>