Relevant dsicver server routine from squeezelite source in slimproto.c
Code:
--------------------
in_addr_t discover_server(void) {
struct sockaddr_in d;
struct sockaddr_in s;
char *buf;
struct pollfd pollinfo;
int disc_sock = socket(AF_INET, SOCK_DGRAM, 0);
socklen_t enable = 1;
setsockopt(disc_sock, SOL_SOCKET, SO_BROADCAST, (const void *)&enable,
sizeof(enable));
buf = "e";
memset(&d, 0, sizeof(d));
d.sin_family = AF_INET;
d.sin_port = htons(PORT);
d.sin_addr.s_addr = htonl(INADDR_BROADCAST);
pollinfo.fd = disc_sock;
pollinfo.events = POLLIN;
do {
LOG_INFO("sending discovery");
memset(&s, 0, sizeof(s));
if (sendto(disc_sock, buf, 1, 0, (struct sockaddr *)&d,
sizeof(d)) < 0) {
LOG_INFO("error sending disovery");
}
if (poll(&pollinfo, 1, 5000) == 1) {
char readbuf[10];
socklen_t slen = sizeof(s);
recvfrom(disc_sock, readbuf, 10, 0, (struct sockaddr
*)&s, &slen);
LOG_INFO("got response from: %s:%d",
inet_ntoa(s.sin_addr), ntohs(s.sin_port));
}
} while (s.sin_addr.s_addr == 0 && running);
closesocket(disc_sock);
return s.sin_addr.s_addr;
}
--------------------
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