MODBUS_SET_SOCKET(3) Libmodbus Manual MODBUS_SET_SOCKET(3)
NAME
modbus_set_socket - set socket of the context
SYNOPSIS
void modbus_set_socket(modbus_t *ctx, int socket);
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
There is no return values.
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
modbus_get_socket(3)
AUTHORS
The libmodbus documentation was written by Stephane Raimbault <stephane.raimbault@gmail.com[1]>
NOTES
1. stephane.raimbault@gmail.com
mailto:stephane.raimbault@gmail.com
libmodbus 3.0.3 05/26/2012 MODBUS_SET_SOCKET(3)
