void QSocket::setSocketIntern( int socket )
{
if ( state() != Idle ) {
clearPendingData();
close();
}
Q_ULONG oldBufferSize = d ? d->readBufferSize : 0;
delete d;
d = new QSocketPrivate;
if (oldBufferSize)
d->readBufferSize = oldBufferSize;
if ( socket >= 0 ) {
QSocketDevice *sd = new QSocketDevice( socket, QSocketDevice::Stream );
sd->setBlocking( FALSE );
sd->setAddressReusable( TRUE );
d->setSocketDevice( this, sd );
}
d->state = Idle;
// Initialize the IO device flags
setFlags( IO_Direct );
resetStatus();
open( IO_ReadWrite );
// hm... this is not very nice.
d->host = QString::null;
d->port = 0;
#ifndef QT_NO_DNS
delete d->dns4;
d->dns4 = 0;
delete d->dns6;
d->dns6 = 0;
#endif
}
void QSocketPrivate::setSocketDevice( QSocket *q, QSocketDevice *device )
{
delete socket;
delete rsn;
delete wsn;
if ( device ) {
socket = device;
} else {
socket = new QSocketDevice( QSocketDevice::Stream,
( addr.isIPv4Address() ?
QSocketDevice::IPv4 :
QSocketDevice::IPv6 ), 0 );
socket->setBlocking( FALSE );
socket->setAddressReusable( TRUE );
}
rsn = new QSocketNotifier( socket->socket(),
QSocketNotifier::Read, q, "read" );
wsn = new QSocketNotifier( socket->socket(),
QSocketNotifier::Write, q, "write" );
QObject::connect( rsn, SIGNAL(activated(int)), q, SLOT(sn_read()) );
rsn->setEnabled( FALSE );
QObject::connect( wsn, SIGNAL(activated(int)), q, SLOT(sn_write()) );
wsn->setEnabled( FALSE );
}
/*!
\internal
Writes \a len bytes to the socket from \a data and returns the
number of bytes written. Returns -1 if an error occurred.
*/
Q_LONG cAsyncNetIOPrivate::writeBlock( const char* data, Q_ULONG len )
{
// Invalid Socket -> Disconnected
if ( !socket->isValid() )
{
socket->close();
return 0;
}
if ( len == 0 )
return 0;
QByteArray* a = wba.last();
if ( a && a->size() + len < 128 )
{
// small buffer, resize
int i = a->size();
a->resize( i + len );
memcpy( a->data() + i, data, len );
}
else
{
// append new buffer
a = new QByteArray( len );
memcpy( a->data(), data, len );
wba.append( a );
}
wsize += len;
return len;
}
void
send(QSocketDevice& socket, const QString& type, const QStringList& args,
bool debug)
{
TclObject list;
list.lappend(type);
for (unsigned int i = 0; i < args.size(); ++i)
list.lappend(args[i]);
if (debug) logDebug("send: " + list.toString());
QString message = list.toString();
if (message.contains('\n'))
message = "\002" + message + "\003";
else
message += "\n";
QCString data = message.utf8();
int len = data.length();
int pos = 0;
while (pos < len) {
int count = socket.writeBlock(data.data() + pos, len - pos);
socket.flush();
if (count == -1) {
logError("writeBlock error: %d", errno);
exit(4);
}
pos += count;
}
}
void Server::newConnection(int socket){
cout << "New connection received" << endl;
QSocketDevice* s = new QSocketDevice();
s->setSocket(socket, QSocketDevice::Stream);
int use_keep_alive = 1;
if(setsockopt(socket, SOL_SOCKET, SO_KEEPALIVE, &use_keep_alive, sizeof(use_keep_alive))){
int errsv = errno;
cerr << "Unable to set socket to use keep_alive error: "
<< errsv << " : " << strerror(errsv) << endl;
exit(1);
}
// change the default behaviour to a more aggressive polling
struct protoent* pe = getprotobyname("tcp"); // pe->p_proto contains the number
int keep_alive_time = 60;
int keep_alive_intvl = 60;
int keep_alive_probes = 20;
if(setsockopt(socket, pe->p_proto, TCP_KEEPIDLE, &keep_alive_time, sizeof(keep_alive_time)))
cerr << "Unable to set socket option keep alive time" << endl;
if(setsockopt(socket, pe->p_proto, TCP_KEEPINTVL, &keep_alive_intvl, sizeof(keep_alive_intvl)))
cerr << "Unable to set socket option keep alive interval" << endl;
if(setsockopt(socket, pe->p_proto, TCP_KEEPCNT, &keep_alive_probes, sizeof(keep_alive_probes)))
cerr << "Unable to set sockt option keep alive probes" << endl;
connections[s] = new ConnectionObject(s, &pSet, (QWidget*)this);
}
void QSocketPrivate::closeSocket()
{
// Order is important here - the socket notifiers must go away
// before the socket does, otherwise libc or the kernel will
// become unhappy.
delete rsn;
rsn = 0;
delete wsn;
wsn = 0;
if ( socket )
socket->close();
}
void
mainLoop(QSocketDevice& socket, bool debug)
{
CommandProcessor processor;
QString data;
bool done = false;
while (!done) {
int timeout = -1;
if (processor.waitingForResults())
timeout = 50;
// TODO: different timeout if using POS and not ping
bool wasTimeout = false;
int result = socket.waitForMore(timeout, &wasTimeout);
if (socket.atEnd() && result == 0 && !wasTimeout)
break;
if (result == -1) {
logError("waitForMore error: %d", errno);
break;
}
if (processor.waitingForResults() && processor.resultsAvailable()) {
QString type;
QStringList results;
processor.getResults(type, results);
send(socket, type, results, debug);
}
if (wasTimeout) continue;
char buffer[result + 1];
result = socket.readBlock(buffer, result);
if (result == -1) {
logError("readBlock error: %d", errno);
break;
}
buffer[result] = 0;
data += QString::fromUtf8(buffer);
while (true) {
QString line;
if (data.left(1) == "\002") {
int index = data.find('\003');
if (index == -1) break;
line = data.mid(1, index - 1);
data = data.mid(index + 1);
} else {
int index = data.find('\n');
if (index == -1) break;
line = data.left(index);
data = data.mid(index + 1);
while (line.right(1) == "\r")
line = line.left(line.length() - 1);
}
if (line.isEmpty()) continue;
if (debug) logDebug("recv: " + line);
if (line == "ping") {
send(socket, "ping:", "pong", debug);
} else if (line == "quit" || line == "exit") {
done = true;
} else {
processor.processCommand(line);
if (processor.resultsAvailable()) {
QString type;
QStringList results;
processor.getResults(type, results);
send(socket, type, results, debug);
}
}
}
}
}