modbus_tcp_accept

Name

modbus_tcp_accept - accept a new connection on a TCP Modbus socket (IPv4)

Synopsis
    int modbus_tcp_accept(modbus_t *ctx, int *s);

Description

The modbus_tcp_accept() function shall extract the first connection on the queue of pending connections, create a new socket and store it in libmodbus context given in argument. If available, accept4() with SOCK_CLOEXEC will be called instead of accept().

Return value

The function shall return a new socket if successful. Otherwise it shall return -1 and set errno.

Example

For detailed example, see unit-test-server.c source file in tests directory.
    ...
    ctx = modbus_new_tcp("127.0.0.1", 502);
    s = modbus_tcp_listen(ctx, 1);
    modbus_tcp_accept(ctx, &s);
    ...
    close(s)
    modbus_free(ctx);

See also

    •   modbus_tcp_pi_accept ⟨modbus_tcp_pi_accept.md⟩

    •   modbus_tcp_listen ⟨modbus_tcp_listen.md⟩

    •   modbus_tcp_pi_listen ⟨modbus_tcp_pi_listen.md⟩