void initServer(int PORT) {
char* address;
struct ifreq ifr;
PORT = validPort(PORT);
if ((sockfd = socket(AF_INET, SOCK_STREAM, 0)) == -1) {
cout << "Error opening socket" << endl;
exit(0);
}
my_addr.sin_family = AF_INET; // host byte order
my_addr.sin_port = htons(PORT); // short, network byte order
my_addr.sin_addr.s_addr = INADDR_ANY; // automatically fill with my IP
memset(&(my_addr.sin_zero), '\0', 8); // zero the rest of the struct
if (bind(sockfd, (struct sockaddr *)&my_addr, sizeof(struct sockaddr)) == -1) {
cout << "Error binding port" << endl;
exit(0);
}
if (listen(sockfd, BACKLOG) == -1) {
cout << "Error listening" << endl;
exit(0);
}
sa.sa_handler = sigchld_handler; // reap all dead processes
sigemptyset(&sa.sa_mask);
sa.sa_flags = SA_RESTART;
if (sigaction(SIGCHLD, &sa, NULL) == -1) {
cout << "Error in garbage collection" << endl;
exit(0);
}
ifr.ifr_addr.sa_family = AF_INET;
strncpy(ifr.ifr_name, "wlan0", IFNAMSIZ-1);
// get the network address with ioctl
ioctl(sockfd, SIOCGIFADDR, &ifr);
address = inet_ntoa(((struct sockaddr_in *)&ifr.ifr_addr)->sin_addr);
cout << "Server running at IP " << address << ", port " << PORT << endl;
while (connected == false) { // main accept() loop
sin_size = sizeof(struct sockaddr_in);
if ((portfd = accept(sockfd, (struct sockaddr*)&their_addr, &sin_size)) == -1) {
cout << "Error accepting connection" << endl;
continue;
}
if (fcntl(portfd, F_SETFL, fcntl(portfd, F_GETFL) | O_NONBLOCK) == -1)
cout << "Error making socket nonblocking with fcntl" << endl;
cout << "Received a connection from IP " << inet_ntoa(their_addr.sin_addr) << endl;
connected = true;
}
}
void TimeStep::fillFields(const vpz::Condition& condition)
{
if (validPort(condition, "time-step")) {
if (condition.firstValue("time-step").isMap()) {
value::Map map = condition.firstValue("time-step").toMap();
if (map.value().find("value") != map.end()
and map.value().find("unit") != map.end()) {
m_spinTime->set_value(map.getDouble("value"));
m_comboUnit->set_active_text(map.getString("unit"));
}
} else {
m_spinTime->set_value(condition.firstValue("time-step").
toDouble().value());
}
} else {
m_checkGlobal->set_active(true);
m_spinTime->set_sensitive(false);
m_comboUnit->set_sensitive(false);
}
}
void initClient(int PORT, char* destIP) {
PORT = validPort(PORT);
if ((portfd = socket(AF_INET, SOCK_STREAM, 0)) == -1) {
cout << "Error opening socket" << endl;
exit(0);
}
their_addr.sin_family = AF_INET; // host byte order
their_addr.sin_port = htons(PORT); // short, network byte order
their_addr.sin_addr.s_addr = inet_addr(destIP);
memset(&(their_addr.sin_zero), '\0', 8); // zero the rest of the struct
if (connect(portfd, (struct sockaddr*)&their_addr, sizeof(struct sockaddr)) == -1) {
cout << "Error connecting to host" << endl;
exit(0);
}
if (fcntl(portfd, F_SETFL, fcntl(portfd, F_GETFL) | O_NONBLOCK) == -1)
cout << "Error making socket nonblocking with fcntl" << endl;
cout << "Connected to host at IP " << destIP << ", port " << PORT << endl;
connected = true;
}
