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sdk:scripts:tcpserver [2015/05/05 15:04] (current) |
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| + | ====== SDK Script tcpserver.are ====== | ||
| + | <code c tcpserver.are> | ||
| + | /* DESC: This script implements a TCP server which is able to receive messages. | ||
| + | * Copyright (C) 2012 NetModule AG, Switzerland | ||
| + | */ | ||
| + | |||
| + | MAX_CONNECTIONS = 1; | ||
| + | |||
| + | void usage() | ||
| + | { | ||
| + | printf("usage: tcpserver.are <port>\n"); | ||
| + | exit(1); | ||
| + | } | ||
| + | |||
| + | if (argc < 2) { | ||
| + | usage(); | ||
| + | } | ||
| + | |||
| + | port = (int) argv[1]; | ||
| + | timeout = 10; | ||
| + | |||
| + | sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); | ||
| + | if (sock < 0) { | ||
| + | printf("Unable to open socket\n"); | ||
| + | exit(1); | ||
| + | } | ||
| + | |||
| + | ret = bind(sock, port, ""); | ||
| + | if (ret == -1) { | ||
| + | printf("Unable to bind port %d\n", port); | ||
| + | close(sock); | ||
| + | exit(1); | ||
| + | } | ||
| + | |||
| + | ret = listen(sock, MAX_CONNECTIONS); | ||
| + | if (ret == -1) { | ||
| + | printf("Unable to listen\n"); | ||
| + | close(sock); | ||
| + | exit(1); | ||
| + | } | ||
| + | |||
| + | printf("Listening for connections on port %d\n", port); | ||
| + | |||
| + | quit = 0; | ||
| + | while (!quit) { | ||
| + | client = accept(sock); | ||
| + | if (client < 0) { | ||
| + | printf("accept failed\n"); | ||
| + | sleep(1); | ||
| + | continue; | ||
| + | } | ||
| + | |||
| + | printf("New client connected\n"); | ||
| + | | ||
| + | while (1) { | ||
| + | /* wait for socket data */ | ||
| + | rv = select(client, timeout); | ||
| + | |||
| + | if (rv == -1) { | ||
| + | printf("Error during select()\n"); | ||
| + | close(sock); | ||
| + | exit(1); | ||
| + | } else if (rv == 0) { | ||
| + | //printf("timeout\n"); | ||
| + | } else { | ||
| + | // one or both of the descriptors have data | ||
| + | msg = recv(client); | ||
| + | if (left(msg,4) == "quit") { | ||
| + | printf("received quit, terminating\n"); | ||
| + | quit = 1; | ||
| + | break; | ||
| + | } | ||
| + | if (left(msg,3) == "bye"){ | ||
| + | printf("received bye, closing connection...\n"); | ||
| + | break; | ||
| + | } else if (msg != "") { | ||
| + | printf("rcvd: '%s'\n", msg); | ||
| + | } | ||
| + | } | ||
| + | } | ||
| + | close(client); | ||
| + | } | ||
| + | |||
| + | close(sock); | ||
| + | |||
| + | exit(0); | ||
| + | |||
| + | </code> | ||