/// Connection base state machine
void nextOperation()
{
NetworkOperation netOp = m_connHandler->nextOperation();
switch ( netOp.operation() ) {
case NetworkOperation::READ: {
LOG_TRACE << "Next operation: READ " << netOp.size() << " bytes from " << identifier();
if ( netOp.buffer() == NULL ) {
LOG_FATAL << "Attempt to READ from " << identifier() << " to a NULL data block";
abort(); // here should be a system exception
}
if ( netOp.size() == 0 ) {
LOG_FATAL << "Attempt to READ 0 bytes data block from " << identifier();
abort(); // here should be a system exception
}
if ( netOp.timeout() > 0 )
setTimeout( netOp.timeout());
m_readBuffer = netOp.buffer();
socket().async_read_some( boost::asio::buffer( m_readBuffer, netOp.size() ),
m_strand.wrap( boost::bind( &ConnectionBase::handleRead,
this->shared_from_this(),
boost::asio::placeholders::error,
boost::asio::placeholders::bytes_transferred )));
break;
}
case NetworkOperation::WRITE: {
LOG_TRACE << "Next operation: WRITE " << netOp.size() << " bytes to " << identifier();
if ( netOp.data() == NULL ) {
LOG_FATAL << "Attempt to WRITE a NULL data block to " << identifier();
abort(); // here should be a system exception
}
if ( netOp.size() == 0 ) {
LOG_FATAL << "Attempt to WRITE a 0 bytes data block to " << identifier();
abort(); // here should be a system exception
}
if ( netOp.timeout() > 0 )
setTimeout( netOp.timeout());
boost::asio::async_write( socket(),
boost::asio::buffer( netOp.data(), netOp.size() ),
m_strand.wrap( boost::bind( &ConnectionBase::handleWrite,
this->shared_from_this(),
boost::asio::placeholders::error )));
break;
}
case NetworkOperation::CLOSE: {
LOG_TRACE << "Next operation: CLOSE connection to " << identifier();
// Initiate graceful connection closure.
setTimeout( 0 );
unregister();
m_strand.post( boost::bind( &ConnectionBase::handleShutdown,
this->shared_from_this() ));
break;
}
case NetworkOperation::NOOP:
LOG_TRACE << "Next operation: NOOP on connection to " << identifier();
break;
}
}
