QStringList
QuasarSocket::recv(int timeout)
{
int timeoutCnt = 0;
while (true) {
char buffer[8192];
int count = readBlock(buffer, 8191);
if (count == -1) {
QStringList results;
results.push_back("error:");
results.push_back("Error reading from server");
return results;
}
if (count == 0) {
waitForMore(1000);
if (++timeoutCnt < timeout || timeout == 0) continue;
QStringList results;
results.push_back("error:");
results.push_back("Timeout reading from server");
return results;
}
buffer[count] = 0;
_readLine += QString::fromUtf8(buffer);
timeoutCnt = 0;
QString data;
if (_readLine.left(1) == "\002") {
int index = _readLine.find('\003');
if (index == -1) continue;
data = _readLine.mid(1, index - 1);
_readLine = _readLine.mid(index + 1);
} else {
int index = _readLine.find('\n');
if (index == -1) continue;
data = _readLine.left(index);
_readLine = _readLine.mid(index + 1);
while (data.right(1) == "\r")
data = data.left(data.length() - 1);
}
return TclObject(data).toStringList();
}
return QStringList();
}
Q_ULONG Q3Socket::waitForMore( int msecs ) const
{
return waitForMore( msecs, 0 );
}
/*!
Writes \a len bytes to the socket from \a data and returns the
number of bytes written. Returns -1 if an error occurred.
This is used for MSocketDevice::Stream sockets.
*/
qint64 MSocketDevice::writeData( const char *data, qint64 len )
{
if ( len == 0 )
return 0;
if ( data == 0 ) {
VERBOSE(VB_SOCKET|VB_EXTRA,
"MSocketDevice::writeBlock: Null pointer error");
return -1;
}
if ( !isValid() ) {
VERBOSE(VB_SOCKET|VB_EXTRA,
"MSocketDevice::writeBlock: Invalid socket");
return -1;
}
if ( !isOpen() ) {
VERBOSE(VB_SOCKET|VB_EXTRA,
"MSocketDevice::writeBlock: Device is not open");
return -1;
}
if ( !isWritable() ) {
VERBOSE(VB_SOCKET|VB_EXTRA,
"MSocketDevice::writeBlock: Write operation not permitted");
return -1;
}
bool done = false;
int r = 0;
bool timeout;
while ( !done ) {
r = ::write( fd, data, len );
done = true;
if ( r < 0 && e == NoError &&
errno != EAGAIN && errno != EWOULDBLOCK ) {
switch( errno ) {
case EINTR: // signal - call read() or whatever again
done = false;
break;
case EPIPE:
case ECONNRESET:
// connection closed
close();
r = 0;
break;
case ENOSPC:
case EIO:
case EISDIR:
case EBADF:
case EINVAL:
case EFAULT:
case ENOTCONN:
case ENOTSOCK:
e = Impossible;
break;
#if defined(ENONET)
case ENONET:
#endif
case EHOSTUNREACH:
case ENETDOWN:
case ENETUNREACH:
case ETIMEDOUT:
e = NetworkFailure;
break;
default:
e = UnknownError;
break;
}
} else if ( waitForMore( 0, &timeout ) == 0 ) {
if ( !timeout ) {
// connection closed
close();
}
}
}
return r;
}
bool MythSocket::readStringList(QStringList &list, uint timeoutMS)
{
list.clear();
if (state() != Connected)
{
VERBOSE(VB_IMPORTANT, LOC +
"readStringList: Error, called with unconnected socket.");
return false;
}
MythTimer timer;
timer.start();
int elapsed = 0;
while (waitForMore(5) < 8)
{
elapsed = timer.elapsed();
if (elapsed >= (int)timeoutMS)
{
VERBOSE(VB_IMPORTANT, LOC + "readStringList: " +
QString("Error, timed out after %1 ms.").arg(timeoutMS));
close();
return false;
}
if (state() != Connected)
{
VERBOSE(VB_IMPORTANT, LOC +
"readStringList: Connection died.");
return false;
}
{
struct timeval tv;
int maxfd;
fd_set rfds;
FD_ZERO(&rfds);
FD_SET(socket(), &rfds);
maxfd = socket();
tv.tv_sec = 0;
tv.tv_usec = 0;
int rval = select(maxfd + 1, &rfds, NULL, NULL, &tv);
if (rval)
{
if (bytesAvailable() == 0)
{
VERBOSE(VB_IMPORTANT, LOC +
"readStringList: Connection died (select).");
return false;
}
}
}
}
QByteArray sizestr(8 + 1, '\0');
if (readBlock(sizestr.data(), 8) < 0)
{
VERBOSE(VB_GENERAL, LOC +
QString("readStringList: Error, readBlock return error (%1)")
.arg(errorToString()));
close();
return false;
}
QString sizes = sizestr;
qint64 btr = sizes.trimmed().toInt();
if (btr < 1)
{
int pending = bytesAvailable();
QByteArray dump(pending + 1, 0);
readBlock(dump.data(), pending);
VERBOSE(VB_IMPORTANT, LOC +
QString("Protocol error: '%1' is not a valid size "
"prefix. %2 bytes pending.")
.arg(sizestr.data()).arg(pending));
return false;
}
QByteArray utf8(btr + 1, 0);
qint64 read = 0;
int errmsgtime = 0;
timer.start();
while (btr > 0)
{
qint64 sret = readBlock(utf8.data() + read, btr);
if (sret > 0)
{
read += sret;
btr -= sret;
if (btr > 0)
{
timer.start();
}
}
else if (sret < 0 && error() != MSocketDevice::NoError)
{
VERBOSE(VB_GENERAL, LOC +
QString("readStringList: Error, readBlock %1")
.arg(errorToString()));
close();
return false;
}
else if (!isValid())
{
VERBOSE(VB_IMPORTANT, LOC +
"readStringList: Error, socket went unconnected");
close();
return false;
}
else
{
elapsed = timer.elapsed();
if (elapsed > 10000)
{
if ((elapsed - errmsgtime) > 10000)
{
errmsgtime = elapsed;
VERBOSE(VB_GENERAL, LOC +
QString("readStringList: Waiting for data: %1 %2")
.arg(read).arg(btr));
}
}
if (elapsed > 100000)
{
VERBOSE(VB_GENERAL, LOC +
"Error, readStringList timeout (readBlock)");
return false;
}
usleep(500);
}
}
QString str = QString::fromUtf8(utf8.data());
QByteArray payload;
payload = payload.setNum(str.length());
payload += " ";
payload.truncate(8);
payload += str;
if (VERBOSE_LEVEL_CHECK(VB_NETWORK))
{
QString msg = QString("read <- %1 %2").arg(socket(), 2)
.arg(payload.data());
if (!VERBOSE_LEVEL_CHECK(VB_EXTRA) && msg.length() > 88)
{
msg.truncate(85);
msg += "...";
}
VERBOSE(VB_NETWORK, LOC + msg);
}
list = str.split("[]:[]");
m_notifyread = false;
s_readyread_thread->WakeReadyReadThread();
return true;
}
