bool DataChannel::Receive(interop::InteropMemory& msg, int32_t timeout)
{
assert(msg.Capacity() > 4);
if (socket.get() == 0)
throw IgniteError(IgniteError::IGNITE_ERR_ILLEGAL_STATE, "DataChannel is not established");
// Message size
msg.Length(4);
OperationResult::T res = ReceiveAll(msg.Data(), static_cast<size_t>(msg.Length()), timeout);
if (res == OperationResult::TIMEOUT)
return false;
if (res == OperationResult::FAIL)
throw IgniteError(IgniteError::IGNITE_ERR_GENERIC, "Can not receive message header");
interop::InteropInputStream inStream(&msg);
int32_t msgLen = inStream.ReadInt32();
if (msgLen < 0)
{
Close();
throw IgniteError(IgniteError::IGNITE_ERR_GENERIC, "Protocol error: Message length is negative");
}
if (msgLen == 0)
return true;
if (msg.Capacity() < msgLen + 4)
msg.Reallocate(msgLen + 4);
msg.Length(4 + msgLen);
res = ReceiveAll(msg.Data() + 4, msgLen, timeout);
if (res == OperationResult::TIMEOUT)
return false;
if (res == OperationResult::FAIL)
throw IgniteError(IgniteError::IGNITE_ERR_GENERIC,
"Connection failure: Can not receive message body");
return true;
}
BinaryObjectImpl BinaryObjectImpl::FromMemory(interop::InteropMemory& mem, int32_t offset,
BinaryTypeManager* metaMgr)
{
BinaryObjectHeader header = BinaryObjectHeader::FromMemory(mem, offset);
int32_t adjustedStart = static_cast<int32_t>(header.GetMem() - mem.Data());
assert(adjustedStart >= 0);
return BinaryObjectImpl(mem, adjustedStart, 0, metaMgr);
}