int listen_for_connections(struct connection *server, int port, int tries)
{
int i;
if(port > 0)
set_connection_port(server, port);
if((server->socketfd = socket(AF_INET, SOCK_STREAM, 0)) == -1){
fprintf(stderr, "could not create a socket!\n");
return -1;
}
i = 1;
if(setsockopt(server->socketfd, SOL_SOCKET, SO_REUSEADDR, &i, sizeof(i)) == -1){
fprintf(stderr, "WARNING: Could not set socket for reuse!\n");
fprintf(stderr, "WARNING: This may affect restarting the sensor when there are active TCP connections to it!\n");
}
memset(&server->sin, 0, sizeof(server->sin));
server->sin.sin_family = AF_INET;
server->sin.sin_addr.s_addr = htonl(INADDR_ANY);
server->sin.sin_port = htons((unsigned short) server->port);
for(i = 0; i < tries; i++) {
if(!bind
(server->socketfd, (struct sockaddr *) &(server->sin),
sizeof(server->sin)))
break;
fprintf(stderr, "Could not bind to port %d. ", server->port);
if(i < tries)
fprintf(stderr, "Will try %d more times...\n", tries-i);
sleep(1);
}
if(i == 5) {
fprintf(stderr, "Could not bind to port %d. Giving up!\n",
server->port);
return -1;
}
if(listen(server->socketfd, 50) < 0) {
fprintf(stderr, "Error: listen()\n");
close(server->socketfd);
return -1;
}
return 0;
}
int listen_for_connections(struct connection *server, int port, int tries)
{
int i;
if(port > 0)
set_connection_port(server, port);
server->socketfd = socket(AF_INET, SOCK_STREAM, 0);
memset(&server->sin, 0, sizeof(server->sin));
server->sin.sin_family = AF_INET;
server->sin.sin_addr.s_addr = htonl(INADDR_ANY);
server->sin.sin_port = htons((unsigned short) server->port);
for(i = 0; i < tries; i++) {
if(!bind
(server->socketfd, (struct sockaddr *) &(server->sin),
sizeof(server->sin)))
break;
fprintf(stderr, "Could not bind to port %d. ", server->port);
if(i < tries)
fprintf(stderr, "Will try %d more times...\n", tries-i);
sleep(1);
}
if(i == 5) {
fprintf(stderr, "Could not bind to port %d. Giving up!\n",
server->port);
return -1;
}
if(listen(server->socketfd, 50) < 0) {
fprintf(stderr, "Error: listen()\n");
close(server->socketfd);
return -1;
}
return 0;
}