void
CTCPSocket::shutdownInput()
{
bool useNewJob = false;
{
CLock lock(&m_mutex);
// shutdown socket for reading
try {
ARCH->closeSocketForRead(m_socket);
}
catch (XArchNetwork&) {
// ignore
}
// shutdown buffer for reading
if (m_readable) {
sendEvent(getInputShutdownEvent());
onInputShutdown();
useNewJob = true;
}
}
if (useNewJob) {
setJob(newJob());
}
}
void
CPacketStreamFilter::filterEvent(const CEvent& event)
{
if (event.getType() == getInputReadyEvent()) {
CLock lock(&m_mutex);
if (!readMore()) {
return;
}
}
else if (event.getType() == getInputShutdownEvent()) {
// discard this if we have buffered data
CLock lock(&m_mutex);
m_inputShutdown = true;
if (m_size != 0) {
return;
}
}
// pass event
CStreamFilter::filterEvent(event);
}
UInt32
CPacketStreamFilter::read(void* buffer, UInt32 n)
{
if (n == 0) {
return 0;
}
CLock lock(&m_mutex);
// if not enough data yet then give up
if (!isReadyNoLock()) {
return 0;
}
// read no more than what's left in the buffered packet
if (n > m_size) {
n = m_size;
}
// read it
if (buffer != NULL) {
memcpy(buffer, m_buffer.peek(n), n);
}
m_buffer.pop(n);
m_size -= n;
// get next packet's size if we've finished with this packet and
// there's enough data to do so.
readPacketSize();
if (m_inputShutdown && m_size == 0) {
EVENTQUEUE->addEvent(CEvent(getInputShutdownEvent(),
getEventTarget(), NULL));
}
return n;
}
ISocketMultiplexerJob*
CTCPSocket::serviceConnected(ISocketMultiplexerJob* job,
bool read, bool write, bool error)
{
CLock lock(&m_mutex);
if (error) {
sendEvent(getDisconnectedEvent());
onDisconnected();
return newJob();
}
bool needNewJob = false;
if (write) {
try {
// write data
UInt32 n = m_outputBuffer.getSize();
const void* buffer = m_outputBuffer.peek(n);
n = (UInt32)ARCH->writeSocket(m_socket, buffer, n);
// discard written data
if (n > 0) {
m_outputBuffer.pop(n);
if (m_outputBuffer.getSize() == 0) {
sendEvent(getOutputFlushedEvent());
m_flushed = true;
m_flushed.broadcast();
needNewJob = true;
}
}
}
catch (XArchNetworkShutdown&) {
// remote read end of stream hungup. our output side
// has therefore shutdown.
onOutputShutdown();
sendEvent(getOutputShutdownEvent());
if (!m_readable && m_inputBuffer.getSize() == 0) {
sendEvent(getDisconnectedEvent());
m_connected = false;
}
needNewJob = true;
}
catch (XArchNetworkDisconnected&) {
// stream hungup
onDisconnected();
sendEvent(getDisconnectedEvent());
needNewJob = true;
}
catch (XArchNetwork& e) {
// other write error
LOG((CLOG_WARN "error writing socket: %s", e.what().c_str()));
onDisconnected();
sendEvent(getOutputErrorEvent());
sendEvent(getDisconnectedEvent());
needNewJob = true;
}
}
if (read && m_readable) {
try {
UInt8 buffer[4096];
size_t n = ARCH->readSocket(m_socket, buffer, sizeof(buffer));
if (n > 0) {
bool wasEmpty = (m_inputBuffer.getSize() == 0);
// slurp up as much as possible
do {
m_inputBuffer.write(buffer, n);
n = ARCH->readSocket(m_socket, buffer, sizeof(buffer));
} while (n > 0);
// send input ready if input buffer was empty
if (wasEmpty) {
sendEvent(getInputReadyEvent());
}
}
else {
// remote write end of stream hungup. our input side
// has therefore shutdown but don't flush our buffer
// since there's still data to be read.
sendEvent(getInputShutdownEvent());
if (!m_writable && m_inputBuffer.getSize() == 0) {
sendEvent(getDisconnectedEvent());
m_connected = false;
}
m_readable = false;
needNewJob = true;
}
}
catch (XArchNetworkDisconnected&) {
// stream hungup
sendEvent(getDisconnectedEvent());
onDisconnected();
needNewJob = true;
}
catch (XArchNetwork& e) {
// ignore other read error
LOG((CLOG_WARN "error reading socket: %s", e.what().c_str()));
}
}
return needNewJob ? newJob() : job;
}
