Query: modbus_tcp_listen
OS: debian
Section: 3
Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar
MODBUS_TCP_LISTEN(3) Libmodbus Manual MODBUS_TCP_LISTEN(3)NAMEmodbus_tcp_listen - create and listen a TCP Modbus socketSYNOPSISint modbus_tcp_listen(modbus_t *ctx, int nb_connection);DESCRIPTIONThe modbus_tcp_listen() function shall create a socket and listen for nb_connection incoming connections.RETURN VALUEThe modbus_tcp_listen() function shall return a new socket if successful. Otherwise it shall return -1 and set errno.EXAMPLEFor a detailed example, see source file bandwith-server-many-up.c provided in tests directory. ... ctx = modbus_new_tcp("127.0.0.1", 502); if (modbus_connect(ctx) == -1) { fprintf(stderr, "Connection failed: %s ", modbus_strerror(errno)); modbus_free(ctx); return -1; } /* Handle until 10 established connections */ server_socket = modbus_tcp_listen(ctx, 10); /* Clear the reference set of socket */ FD_ZERO(&refset); /* Add the server socket */ FD_SET(server_socket, &refset); if (select(server_socket + 1, &refset, NULL, NULL, NULL) == -1) { } ... close(server_socket); modbus_free(ctx);SEE ALSOmodbus_tcp_accept(3) modbus_tcp_pi_accept(3) modbus_tcp_pi_listen(3)AUTHORSThe libmodbus documentation was written by Stephane Raimbault <stephane.raimbault@gmail.com[1]>NOTES1. stephane.raimbault@gmail.com mailto:stephane.raimbault@gmail.com libmodbus 3.0.3 05/26/2012 MODBUS_TCP_LISTEN(3)
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