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sdk:scripts:udpserver [2015/05/05 15:04] |
sdk:scripts:udpserver [2015/05/05 15:04] (current) |
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| + | ====== SDK Script udpserver.are ====== | ||
| + | <code c udpserver.are> | ||
| + | /* DESC: This script implements an UDP server which is able to receive messages. | ||
| + | * Copyright (C) 2012 NetModule AG, Switzerland | ||
| + | */ | ||
| + | |||
| + | void usage() | ||
| + | { | ||
| + | printf("usage: udpserver.are <port>\n"); | ||
| + | exit(1); | ||
| + | } | ||
| + | |||
| + | if (argc < 2) { | ||
| + | usage(); | ||
| + | } | ||
| + | |||
| + | PORT = (int) argv[1]; | ||
| + | |||
| + | sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP); | ||
| + | if (sock < 0) { | ||
| + | printf("Unable to open socket\n"); | ||
| + | exit(1); | ||
| + | } | ||
| + | |||
| + | /* bind socket to 1st LAN interface */ | ||
| + | addr = nb_ifc_address("LAN1"); | ||
| + | ret = bind(sock, PORT, addr); | ||
| + | if(ret == -1) { | ||
| + | printf("Unable to bind to port: %d\n", PORT); | ||
| + | close(sock); | ||
| + | exit(1); | ||
| + | } | ||
| + | |||
| + | printf("Listening for messages on port %d\n", PORT); | ||
| + | |||
| + | while (1) { | ||
| + | msg = recvfrom(sock); | ||
| + | if (left(msg, 4) == "quit") { | ||
| + | printf("Received quit, terminating\n"); | ||
| + | break; | ||
| + | } else if (msg != "") { | ||
| + | printf("Received message '%s'\n", msg); | ||
| + | } | ||
| + | } | ||
| + | |||
| + | close(sock); | ||
| + | exit(0); | ||
| + | |||
| + | </code> | ||