if (0 != setsockopt(listenSocket, SOL_SOCKET, SO_REUSEADDR, &lng, 4))
{
errorStr = "Setsockopt failed. " + string(strerror(errno));
if (0 != setsockopt(listenSocket, SOL_SOCKET, SO_REUSEADDR, &lng, 4))
{
errorStr = "Setsockopt failed. " + string(strerror(errno));