SYNOPSIS
int modbus_set_socket(modbus_t *ctx, int s);
DESCRIPTION
The modbus_set_socket() function shall set the socket or file descriptor in the libmodbus context. This function is useful for managing multiple client connections to the same server.
RETURN VALUE
The function shall return 0 if successful. Otherwise it shall return -1 and set errno.
EXAMPLE
ctx = modbus_new_tcp("127.0.0.1", 1502); server_socket = modbus_tcp_listen(ctx, NB_CONNECTION); FD_ZERO(&rdset); FD_SET(server_socket, &rdset); /* .... */ if (FD_ISSET(master_socket, &rdset)) { modbus_set_socket(ctx, master_socket); rc = modbus_receive(ctx, query); if (rc != -1) { modbus_reply(ctx, query, rc, mb_mapping); } }
SEE ALSO
AUTHORS
The libmodbus documentation was written by Stéphane Raimbault <stephane.raimbault@gmail.com>