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Commit | Line | Data |
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eea8be86 | 1 | #include <stdio.h> |
eedcd078 WD |
2 | #include <stdlib.h> |
3 | #include <unistd.h> | |
4 | #include <sys/socket.h> | |
ecf3fb22 | 5 | #include <netinet/in.h> |
eedcd078 WD |
6 | |
7 | int main (int argc, char *argv[]) | |
8 | { | |
9 | int s, len, o, port = 6666; | |
10 | char buf[512]; | |
11 | struct sockaddr_in addr; | |
fadad157 | 12 | socklen_t addr_len = sizeof addr; |
eedcd078 WD |
13 | |
14 | if (argc > 1) | |
15 | port = atoi (argv[1]); | |
16 | ||
17 | s = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP); | |
18 | ||
19 | o = 1; | |
20 | len = 4; | |
21 | setsockopt (3, SOL_SOCKET, SO_REUSEADDR, &o, len); | |
22 | ||
23 | addr.sin_family = AF_INET; | |
24 | addr.sin_port = htons (port); | |
25 | addr.sin_addr.s_addr = INADDR_ANY; /* receive broadcasts */ | |
26 | ||
27 | bind (s, (struct sockaddr *) &addr, sizeof addr); | |
28 | ||
29 | for (;;) { | |
30 | len = recvfrom (s, buf, sizeof buf, 0, (struct sockaddr *) &addr, &addr_len); | |
31 | if (len < 0) | |
32 | break; | |
eea8be86 PT |
33 | if (write (1, buf, len) != len) |
34 | fprintf(stderr, "WARNING: serial characters dropped\n"); | |
eedcd078 WD |
35 | } |
36 | ||
37 | return 0; | |
38 | } |