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crate::ix!();
pub struct V1TransportSerializer {
}
impl TransportSerializer for V1TransportSerializer {
}
impl PrepareForTransport for V1TransportSerializer {
fn prepare_for_transport(&mut self,
msg: &mut SerializedNetMsg,
header: &mut Vec<u8>) {
todo!();
/*
*/
}
}
impl V1TransportSerializer {
pub fn prepare_for_transport(&mut self,
msg: &mut SerializedNetMsg,
header: &mut Vec<u8>) {
todo!();
/*
// create dbl-sha256 checksum
uint256 hash = Hash(msg.data);
// create header
CMessageHeader hdr(Params().MessageStart(), msg.m_type.c_str(), msg.data.size());
memcpy(hdr.pchChecksum, hash.begin(), CMessageHeader::CHECKSUM_SIZE);
// serialize header
header.reserve(CMessageHeader::HEADER_SIZE);
CVectorWriter{SER_NETWORK, INIT_PROTO_VERSION, header, 0, hdr};
*/
}
}
pub type NodeId = i64;
//---------------------------------------------
pub struct V1TransportDeserializer {
pub chain_params: Rc<RefCell<ChainParams>>,
/**
| Only for logging
|
*/
pub node_id: NodeId,
pub hasher: Rc<RefCell<Hash256>>,
pub data_hash: Rc<RefCell<u256>>,
/**
| parsing header (false) or data (true)
|
*/
pub in_data: bool,
/**
| partially received header
|
*/
pub hdrbuf: DataStream,
/**
| complete header
|
*/
pub hdr: MessageHeader,
/**
| received message data
|
*/
pub recv: DataStream,
pub n_hdr_pos: u32,
pub n_data_pos: u32,
}
impl TransportDeserializer for V1TransportDeserializer {
}
impl Complete for V1TransportDeserializer {
fn complete(&self) -> bool {
todo!();
/*
if (!in_data)
return false;
return (hdr.nMessageSize == nDataPos);
*/
}
}
impl Reset for V1TransportDeserializer {
fn reset(&mut self) {
todo!();
/*
vRecv.clear();
hdrbuf.clear();
hdrbuf.resize(24);
in_data = false;
nHdrPos = 0;
nDataPos = 0;
data_hash.SetNull();
hasher.Reset();
*/
}
}
impl ReadData for V1TransportDeserializer {
fn read(&mut self, msg_bytes: &mut [u8]) -> i32 {
todo!();
/*
int ret = in_data ? readData(msg_bytes) : readHeader(msg_bytes);
if (ret < 0) {
Reset();
} else {
msg_bytes = msg_bytes.subspan(ret);
}
return ret;
*/
}
}
impl GetMessage for V1TransportDeserializer {
fn get_message(&mut self,
time: Instant /* micros */,
out_err_raw_size: &mut u32) -> Option<NetMessage> {
todo!();
/*
// decompose a single CNetMessage from the TransportDeserializer
std::optional<CNetMessage> msg(std::move(vRecv));
// store command string, time, and sizes
msg->m_command = hdr.GetCommand();
msg->m_time = time;
msg->m_message_size = hdr.nMessageSize;
msg->m_raw_message_size = hdr.nMessageSize + CMessageHeader::HEADER_SIZE;
uint256 hash = GetMessageHash();
// We just received a message off the wire, harvest entropy from the time (and the message checksum)
RandAddEvent(ReadLE32(hash.begin()));
// Check checksum and header command string
if (memcmp(hash.begin(), hdr.pchChecksum, CMessageHeader::CHECKSUM_SIZE) != 0) {
LogPrint(BCLog::NET, "Header error: Wrong checksum (%s, %u bytes), expected %s was %s, peer=%d\n",
SanitizeString(msg->m_command), msg->m_message_size,
HexStr(Span<uint8_t>(hash.begin(), hash.begin() + CMessageHeader::CHECKSUM_SIZE)),
HexStr(hdr.pchChecksum),
m_node_id);
out_err_raw_size = msg->m_raw_message_size;
msg = std::nullopt;
} else if (!hdr.IsCommandValid()) {
LogPrint(BCLog::NET, "Header error: Invalid message type (%s, %u bytes), peer=%d\n",
SanitizeString(hdr.GetCommand()), msg->m_message_size, m_node_id);
out_err_raw_size = msg->m_raw_message_size;
msg.reset();
}
// Always reset the network deserializer (prepare for the next message)
Reset();
return msg;
*/
}
}
impl SetVersion for V1TransportDeserializer {
fn set_version(&mut self, n_version_in: i32) {
todo!();
/*
hdrbuf.SetVersion(nVersionIn);
vRecv.SetVersion(nVersionIn);
*/
}
}
impl V1TransportDeserializer {
pub fn new(
chain_params: &ChainParams,
node_id: NodeId,
n_type_in: i32,
n_version_in: i32) -> Self {
todo!();
/*
: chain_params(chain_params),
: node_id(node_id),
: hdrbuf(nTypeIn, nVersionIn),
: recv(nTypeIn, nVersionIn),
Reset();
*/
}
pub fn read_header(&mut self, msg_bytes: &[u8]) -> i32 {
todo!();
/*
// copy data to temporary parsing buffer
unsigned int nRemaining = CMessageHeader::HEADER_SIZE - nHdrPos;
unsigned int nCopy = std::min<unsigned int>(nRemaining, msg_bytes.size());
memcpy(&hdrbuf[nHdrPos], msg_bytes.data(), nCopy);
nHdrPos += nCopy;
// if header incomplete, exit
if (nHdrPos < CMessageHeader::HEADER_SIZE)
return nCopy;
// deserialize to CMessageHeader
try {
hdrbuf >> hdr;
}
catch (const std::exception&) {
LogPrint(BCLog::NET, "Header error: Unable to deserialize, peer=%d\n", m_node_id);
return -1;
}
// Check start string, network magic
if (memcmp(hdr.pchMessageStart, m_chain_params.MessageStart(), CMessageHeader::MESSAGE_START_SIZE) != 0) {
LogPrint(BCLog::NET, "Header error: Wrong MessageStart %s received, peer=%d\n", HexStr(hdr.pchMessageStart), m_node_id);
return -1;
}
// reject messages larger than MAX_SIZE or MAX_PROTOCOL_MESSAGE_LENGTH
if (hdr.nMessageSize > MAX_SIZE || hdr.nMessageSize > MAX_PROTOCOL_MESSAGE_LENGTH) {
LogPrint(BCLog::NET, "Header error: Size too large (%s, %u bytes), peer=%d\n", SanitizeString(hdr.GetCommand()), hdr.nMessageSize, m_node_id);
return -1;
}
// switch state to reading message data
in_data = true;
return nCopy;
*/
}
pub fn read_data(&mut self, msg_bytes: &[u8]) -> i32 {
todo!();
/*
unsigned int nRemaining = hdr.nMessageSize - nDataPos;
unsigned int nCopy = std::min<unsigned int>(nRemaining, msg_bytes.size());
if (vRecv.size() < nDataPos + nCopy) {
// Allocate up to 256 KiB ahead, but never more than the total message size.
vRecv.resize(std::min(hdr.nMessageSize, nDataPos + nCopy + 256 * 1024));
}
hasher.Write(msg_bytes.first(nCopy));
memcpy(&vRecv[nDataPos], msg_bytes.data(), nCopy);
nDataPos += nCopy;
return nCopy;
*/
}
pub fn get_message_hash(&self) -> &u256 {
todo!();
/*
assert(Complete());
if (data_hash.IsNull())
hasher.Finalize(data_hash);
return data_hash;
*/
}
}