//------------------------------------------------------------------------------
// init() -- initialize the network
//------------------------------------------------------------------------------
bool PosixHandler::init()
{
bool ok = BaseClass::init();
// ---
// Set the local IP address
// ---
if (localIpAddr != nullptr) {
setLocalAddr(localIpAddr);
}
return ok;
}
int
setConnAddr( rcComm_t *conn ) {
int status1, status2;
status1 = setLocalAddr( conn->sock, &conn->localAddr );
status2 = setRemoteAddr( conn->sock, &conn->remoteAddr );
if ( status1 < 0 ) {
return status1;
}
else if ( status2 < 0 ) {
return status2;
}
else {
return 0;
}
}
// Sets the local IP address using hostname or the Internet standard "." (dotted) notation
bool PosixHandler::setLocalAddr(const char* const hostname)
{
bool ok = false;
if (hostname != 0) {
uint32_t addr0 = INADDR_NONE;
if (std::isdigit(hostname[0])) {
// If 'hostname' starts with a number then first try to use it as an IP address
addr0 = ::inet_addr(hostname);
ok = (addr0 != INADDR_NONE);
}
if (addr0 == INADDR_NONE) {
// Didn't work, try to find the host IP address by name
if (isMessageEnabled(MSG_DEBUG)) {
std::cout << "PosixHandler::setLocalAddr(): Looking up host name: " << hostname;
}
const hostent* p = gethostbyname(hostname);
if (p != 0 && p->h_length > 0) {
// 'q' points to the four byte address (in network order) as a single unsigned integer
const unsigned int* const q = reinterpret_cast<const unsigned int*>(p->h_addr_list[0]);
if (q != 0) {
struct in_addr in;
in.s_addr = *q;
addr0 = in.s_addr;
char* ipAddr = ::inet_ntoa(in);
if (ipAddr != 0) {
if (isMessageEnabled(MSG_DEBUG)) {
std::cout << " -- IP Address: " << ipAddr << std::endl;
}
ok = true;
}
}
}
if (!ok && isMessageEnabled(MSG_DEBUG)) {
std::cout << " -- HOST NOT FOUND!" << std::endl;
}
}
if (addr0 != INADDR_NONE) ok = setLocalAddr(addr0);
}
return ok;
}
// -------------------------------------------------------------
// bindSocket() -- bind the socket to an address, and configure
// the send and receive buffers.
// -------------------------------------------------------------
bool NetHandler::bindSocket()
{
#if defined(WIN32)
if (socketNum == INVALID_SOCKET) return false;
#else
if (socketNum < 0) return false;
#endif
// ---
// Make sure we have a local host IP address
// ---
if (localAddr == INADDR_ANY) {
char localhost[256];
int result = gethostname(localhost, sizeof(localhost));
if (result == 0) {
setLocalAddr(localhost);
}
}
// ---
// Set the reuse socket attribute
// ---
{
#if defined(WIN32)
BOOL optval = getSharedFlag();
Len optlen = sizeof(optval);
if( setsockopt(socketNum, SOL_SOCKET, SO_REUSEADDR, (const char*) &optval, optlen) == SOCKET_ERROR)
#else
int optval = getSharedFlag();
Len optlen = sizeof(optval);
if( setsockopt(socketNum, SOL_SOCKET, SO_REUSEADDR, &optval, optlen) == SOCKET_ERROR)
#endif
{
perror("init(): error setsockopt(SO_REUSEADDR)\n");
return false;
}
}
return true;
}
//------------------------------------------------------------------------------
// init() -- initialize the network
//------------------------------------------------------------------------------
bool NetHandler::init()
{
bool ok = true;
#if defined(WIN32)
// Init Winsock2
WSADATA wsaData;
WORD wVersionRequested = MAKEWORD( 2, 2 );
int err = WSAStartup( wVersionRequested, &wsaData );
if (err != 0) {
std::cerr << "NetHandler::init() -- WSAStartup() FAILED" << std::endl;
}
ok = (err == 0);
#endif
// ---
// Set the local IP address
// ---
if (localIpAddr != 0) {
setLocalAddr(localIpAddr);
}
return ok;
}
