feat(net): support eth/68 #1361

jinsankim · 2023-02-15T05:44:40Z

Motivation

Implement the eth/68 protocol

Reference

codecov-commenter · 2023-02-15T09:04:46Z

Codecov Report

Merging #1361 (d43efa0) into main (5c2f96e) will decrease coverage by 28.93%.
The diff coverage is 42.24%.

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@@             Coverage Diff             @@
##             main    #1361       +/-   ##
===========================================
- Coverage   76.19%   47.27%   -28.93%     
===========================================
  Files         357      358        +1     
  Lines       41040    42320     +1280     
===========================================
- Hits        31270    20005    -11265     
- Misses       9770    22315    +12545

Flag	Coverage Δ
integration-tests	`21.96% <14.65%> (-0.40%)`	⬇️
unit-tests	`37.70% <41.37%> (-32.82%)`	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
crates/net/eth-wire/src/errors/eth.rs	`47.05% <ø> (-5.89%)`	⬇️
crates/net/network/src/message.rs	`40.77% <ø> (-3.89%)`	⬇️
crates/net/network/src/network.rs	`53.67% <0.00%> (-5.15%)`	⬇️
crates/net/network/src/session/active.rs	`33.28% <0.00%> (-53.12%)`	⬇️
crates/net/network/src/transactions.rs	`0.00% <0.00%> (-21.98%)`	⬇️
crates/net/eth-wire/src/types/message.rs	`35.24% <7.69%> (-14.76%)`	⬇️
crates/net/eth-wire/src/types/version.rs	`30.00% <25.00%> (-50.00%)`	⬇️
crates/net/eth-wire/src/ethstream.rs	`47.50% <52.94%> (-35.10%)`	⬇️
crates/net/eth-wire/src/types/broadcast.rs	`65.00% <66.66%> (-11.79%)`	⬇️
crates/net/eth-wire/src/capability.rs	`61.76% <96.77%> (+2.33%)`	⬆️
... and 181 more

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mattsse

thanks for taking this on.
left some comments, but would like to hear @Rjected s opinion on some parts.

mattsse · 2023-02-15T10:08:30Z

crates/net/eth-wire/src/types/message.rs

    NewPooledTransactionHashes(NewPooledTransactionHashes),
+    NewPooledTransactionHashes68(NewPooledTransactionHashes68),


this is a bit cursed -.- that the variant now is an enum

Yeah, I think given we don't have support for multiple capabilities, which also has the need for new message types and encodings, it's up in the air how we should do this properly. But yeah, I agree this doesn't seem like the best way to do it

I agree it's too ugly and immature.

I adopted the convention from geth. (They uses the name like NewPooledTransactionHashesPacket66 and NewPooledTransactionHashesPacket68.) And I tried to minimize changes. This code is the result of this approach.

I'll think more what's better way.

I actually like that we do version-specific decoding on the ethstream level.

so, after some thinking this change seems to be fine to me, because we already have outdated variants like GetNodeData etc.
and because the stream does not emit them if they don't match the version this is ok.

I'd like to rename the existing variant to NewPooledTransactionHashes66 then

I'd like to rename the existing variant to NewPooledTransactionHashes66 then

That's my first implementation but I've reverted it. I'll think again and share why I reverted it. Or will follow up the idea.

I'm learning for ActiveSession, PeerMessage::PooledTransactions and so on. The PR might have a bug.

After learning code more, I could remember why I choose to use NewPooledTransactionHashes than NewPooledTransactionHashes66. It's because NewPooledTransactionHashes is used internally as well for PeerMessage::PooledTransactions, NetworkHandleMessage::SendPooledTransactionHashes and NetworkTransactionEvent::IncomingPooledTransactionHashes.

Now I've realized that we should care of these as well. maybe need more 66, 68 convention and branches. T_T I'm working on it.

I'd like to rename the existing variant to NewPooledTransactionHashes66 then

follow it up with a94b1da. I've changed this PR into Draft because the new change is little bit big. I need to add more tests and review myself first.

ready for review.

mattsse · 2023-02-15T10:11:17Z

crates/net/network/src/session/active.rs

@@ -181,6 +181,19 @@ impl ActiveSession {
            EthMessage::NewPooledTransactionHashes(msg) => {
                self.try_emit_broadcast(PeerMessage::PooledTransactions(msg)).into()
            }
+            EthMessage::NewPooledTransactionHashes68(msg) => {
+                if msg.hashes.len() != msg.types.len() || msg.hashes.len() != msg.sizes.len() {


@Rjected perhaps we should apply this check in the stream directly? so the stream only yields well-formatted messages

yes, we should be doing these checks in the stream, and malformed messages should be considered invalid

mattsse · 2023-02-15T10:14:55Z

crates/net/eth-wire/src/types/message.rs

-        message_type: EthMessageID,
-        buf: &mut &[u8],
-    ) -> Result<Self, reth_rlp::DecodeError> {
+    pub fn decode_message(version: u8, buf: &mut &[u8]) -> Result<Self, reth_rlp::DecodeError> {


so now decode_message depends on the version? because NewPooledTransactionHashes format differs?

...
I feel like mixing this together with decode is a bit weird. for example decoding GetNodeData now fails with an rlp error even though it can still be valid rlp.

I really would like to do this in two steps:
decode then validate against version.
wdyt @Rjected

yes, decoding should not worry about version details, I think this is another consequence of not supporting multiple capabilities. We don't know what to decode into if we don't know the eth wire protocol version being used. It's ambiguous whether or not we should attempt to decode a eth/68 pooled hashes message, or a eth/67 pooled hashes message when we receive a NewPooledTransactionHashes message ID.

For support multiple capabilities, we must have a branch at some level. It could be just if, match, traits, module or whatever. It's needed but I agree that it's not the best way.

mattsse · 2023-02-15T10:15:33Z

crates/net/eth-wire/src/hello.rs

-            capabilities: capabilities
-                .unwrap_or_else(|| vec![EthVersion::Eth66.into(), EthVersion::Eth67.into()]),
+            capabilities: capabilities.unwrap_or_else(|| {
+                vec![EthVersion::Eth66.into(), EthVersion::Eth67.into(), EthVersion::Eth68.into()]


I don't think we should enable this by default already?

agreed, this is a future upgrade, 67 is still considered the current version

agreed. I thought it's safe because it's still including 66, 67, but I was too naive and aggressive. Definitely, I agree not to enable it yet and need to verify it.

follow it up with 651fc4d

mattsse · 2023-02-15T10:16:31Z

crates/net/eth-wire/src/ethstream.rs

    #[pin]
    inner: S,
 }

 impl<S> EthStream<S> {
    /// Creates a new unauthed [`EthStream`] from a provided stream. You will need
    /// to manually handshake a peer.
-    pub fn new(inner: S) -> Self {
-        Self { inner }
+    pub fn new(version: u8, inner: S) -> Self {


if we do this then all version: u8 should be version: EthVersion instead

follow it up with ca74056

Rjected

I'm really not sure that we should implement this without first figuring out the best way to support multiple capabilities. eth/66 and eth/67 are a convenient exception to the rule that most versions have entirely separate message encodings, that are ambiguous unless you know the version. New capabilities also have this problem, so if we push to support eth/68 without first figuring out how to support other capabilities, I think we might bury a lot of version-specific code / tech debt that should not be there long-term

Rjected · 2023-02-15T20:32:11Z

crates/net/eth-wire/src/types/message.rs

    NewPooledTransactionHashes(NewPooledTransactionHashes),
+    NewPooledTransactionHashes68(NewPooledTransactionHashes68),


Yeah, I think given we don't have support for multiple capabilities, which also has the need for new message types and encodings, it's up in the air how we should do this properly. But yeah, I agree this doesn't seem like the best way to do it

Rjected · 2023-02-15T20:33:10Z

crates/net/network/src/session/active.rs

@@ -181,6 +181,19 @@ impl ActiveSession {
            EthMessage::NewPooledTransactionHashes(msg) => {
                self.try_emit_broadcast(PeerMessage::PooledTransactions(msg)).into()
            }
+            EthMessage::NewPooledTransactionHashes68(msg) => {
+                if msg.hashes.len() != msg.types.len() || msg.hashes.len() != msg.sizes.len() {


yes, we should be doing these checks in the stream, and malformed messages should be considered invalid

Rjected · 2023-02-15T20:37:24Z

crates/net/eth-wire/src/types/message.rs

-        message_type: EthMessageID,
-        buf: &mut &[u8],
-    ) -> Result<Self, reth_rlp::DecodeError> {
+    pub fn decode_message(version: u8, buf: &mut &[u8]) -> Result<Self, reth_rlp::DecodeError> {


yes, decoding should not worry about version details, I think this is another consequence of not supporting multiple capabilities. We don't know what to decode into if we don't know the eth wire protocol version being used. It's ambiguous whether or not we should attempt to decode a eth/68 pooled hashes message, or a eth/67 pooled hashes message when we receive a NewPooledTransactionHashes message ID.

jinsankim · 2023-02-16T07:08:05Z

@mattsse @Rjected

Thank you for comments! I'm much learning from your comments. And now I understand it could cause tech debt and we need to figure out what's the best way to support multiple protocol.

Please feel free to close it if this PR is not proper way. I just picked it up because the issue is marked as good-first-issue. It's enough for me to work it on and learn from it. Whether it could be merged or not, I'd like to revise it in order to learn more. I open to close it any time without any comment. :)

mattsse

alright, we actually need this urgently because this is now a blocker for hive tests.

This looks pretty good already, I guess biggest change is: move tx hash 68 validation into stream itself.

and separate decoding from version but the stream should validate the decoded message against the version, right @Rjected ?

mattsse · 2023-02-17T16:05:30Z

crates/net/eth-wire/src/capability.rs

@@ -115,7 +122,7 @@ impl Capabilities {
    /// Whether the peer supports `eth` sub-protocol.
    #[inline]
    pub fn supports_eth(&self) -> bool {
-        self.eth_67 || self.eth_66
+        self.eth_67 || self.eth_66 || self.eth_68


since we expect that client will update over time we can change the order here: 68 || 67 || 66

follow it up with b7b4b14. nit but please note that I also changed the eth versions order as desc in HelloMessageBuilder.

mattsse · 2023-02-17T16:10:36Z

crates/net/eth-wire/src/types/message.rs

    NewPooledTransactionHashes(NewPooledTransactionHashes),
+    NewPooledTransactionHashes68(NewPooledTransactionHashes68),


I actually like that we do version-specific decoding on the ethstream level.

so, after some thinking this change seems to be fine to me, because we already have outdated variants like GetNodeData etc.
and because the stream does not emit them if they don't match the version this is ok.

mattsse · 2023-02-17T16:11:10Z

crates/net/eth-wire/src/types/message.rs

    NewPooledTransactionHashes(NewPooledTransactionHashes),
+    NewPooledTransactionHashes68(NewPooledTransactionHashes68),


I'd like to rename the existing variant to NewPooledTransactionHashes66 then

mattsse · 2023-02-17T16:11:57Z

crates/net/eth-wire/src/types/message.rs

@@ -153,6 +158,7 @@ pub enum EthMessage {
    NewBlock(Box<NewBlock>),
    Transactions(Transactions),
    NewPooledTransactionHashes(NewPooledTransactionHashes),
+    NewPooledTransactionHashes68(NewPooledTransactionHashes68),


also need to update struct docs for EthMessage.

follow it up with 011eb73. Please suggest if docs is insufficient because I'm not a fluent English speaker.

Rjected · 2023-02-17T18:27:51Z

and separate decoding from version but the stream should validate the decoded message against the version, right @Rjected ?

I guess it might be difficult to decode without using the version, because otherwise we don't know if we should attempt a NewPooledTransactionHashes68::decode, or a NewPooledTransactionHashes::decode

jinsankim · 2023-02-18T06:49:36Z

merged upstream/main to resolve conflicts.

jinsankim · 2023-02-18T07:14:18Z

I need to investigate why the test is failed because it seems not to be related with my change. Please note that the work might be delayed because it's weekend in my timezone.

Co-authored-by: Georgios Konstantopoulos <me@gakonst.com>

…and follow it up

gakonst

Good work! I think final things missing might be some tests? Defer to @mattsse otherwise. I guess passing Hive will matter there, but worth configuring 2 clients with eth/68 and seeing that it works? Or one with 67 and one with 68?

mattsse

only a few suggestion for the eth-wire changes.

I have some questions regarding the network changes, mainly why we need this type with optional fields.

can we extract all of these and submit separately, so we can merge the eth68 changes asap?

mattsse · 2023-02-20T12:06:04Z

crates/net/eth-wire/src/errors/eth.rs

    EthHandshakeError(#[from] EthHandshakeError),
    #[error("message size ({0}) exceeds max length (10MB)")]
    MessageTooBig(usize),
+    #[error("TransactionHashes invalid len of fields: {0} {1} {2}")]
+    TransactionHashesInvalidLenOfFields(usize, usize, usize),


I'd like to use named fields here, otherwise it's harder to understand what the different usizes are

follow it up with 231f460.

mattsse · 2023-02-20T12:07:53Z

crates/net/eth-wire/src/types/broadcast.rs

+    pub hashes: Vec<H256>,
+}
+
+impl TryFrom<(Option<Vec<u8>>, Option<Vec<usize>>, Vec<H256>)> for NewPooledTransactionHashes68 {


not a fan of this conversion.

why would we need this anyway?
I'd like to remove this.

Please give me an advice. T_T

It's used for converting from NewPooledTransactionHashes into NewPooledTransactionHashes68.

NewPooledTransactionHashes is defined in network so we could not define TryFrom<NewPooledTransactionHashes> for NewPooledTransactionHashes68.

The only alternative idea I have is that pub fn new(...) -> Result<Self, Error>.

HDYT?

do we need this in this PR?

I still don't understand why we would need this.

in any case, a TryFrom a tuple with 3 items is not great.

mattsse · 2023-02-20T12:09:26Z

crates/net/eth-wire/src/types/message.rs

+                if version >= EthVersion::Eth67 {
+                    return Err(reth_rlp::DecodeError::Custom("invalid message id"))
+                }


I think since this is no longer rlp only we need to change the error type we return as well and add a dedicated error variant for when this happens.

mattsse · 2023-02-20T12:11:16Z

crates/net/network/src/message.rs

+/// Internal form of a `PooledTransactions` message
+/// Same as [`NewPooledTransactionHashes68`] but types and sizes are Option.
+#[derive(Debug, Clone)]
+pub struct NewPooledTransactionHashes {


why do we need this, why do we need optional fields here?

mattsse · 2023-02-20T12:12:05Z

crates/net/network/src/message.rs

+    }
+}
+
+impl From<(Vec<TxHash>, Vec<TxType>, Vec<usize>)> for NewPooledTransactionHashes {


From impls for tuples are not great so would abandon them entirely.

but not clear why we need this type at all.

follow it up with acb0d81.

jinsankim · 2023-02-20T15:40:19Z

@gakonst

worth configuring 2 clients with eth/68 and seeing that it works? Or one with 67 and one with 68?

I've tested and succeeded it with enabling only eth/68 and connecting to mainnet but I think it's conducted only early stage. Because the PR is too old during reviewing, I'll test it again.

jinsankim · 2023-02-20T15:55:56Z

@mattsse

I have some questions regarding the network changes, mainly why we need this type with optional fields.

Thanks for your comment! To my understanding, maybe you asked why does NewPooledTransactionHashes have optional types and sizes, right? If I understand correctly, because it's used for PeerMessage::PooledTransactions.

reth/crates/net/network/src/message.rs

Lines 40 to 59 in 058349e

    
           /// All Bi-directional eth-message variants that can be sent to a session or received from a 
        
           /// session. 
        
           #[derive(Debug)] 
        
           pub enum PeerMessage { 
        
               /// Announce new block hashes 
        
               NewBlockHashes(NewBlockHashes), 
        
               /// Broadcast new block. 
        
               NewBlock(NewBlockMessage), 
        
               /// Received transactions _from_ the peer 
        
               ReceivedTransaction(Transactions), 
        
               /// Broadcast transactions _from_ local _to_ a peer. 
        
               SendTransactions(SharedTransactions), 
        
               /// Send new pooled transactions 
        
               PooledTransactions(NewPooledTransactionHashes), 
        
               /// All `eth` request variants. 
        
               EthRequest(PeerRequest), 
        
               /// Other than eth namespace message 
        
               #[allow(unused)] 
        
               Other(RawCapabilityMessage), 
        
           }

PeerMessage::PooledTransactions is bi-directional eth-message variants so it could represent NewPooledTransactionHashes66 and NewPooledTransactionHashes68. As you know, NewPooledTransactionHashes66 has only hashes but NewPooledTransactionHashes68 has all types, sizes, and hashes.

My first approach was decomposing PooledTransactions into each PooledTransactions66 and PooledTransactions68. But after some trial, I've realized that it's better to use optional field to simplify handlers.

I wonder whether it's acceptable or not. Always welcome for any advice.

mattsse · 2023-02-20T15:58:11Z

I see, I'd like to add another variant for 68 here as well, but let's do that separately, we can leave incoming 68 unhandled in this PR

mattsse · 2023-02-20T18:00:36Z

@jinsankim can we please do the bare minimum for eth68 here and do the new message type in a separate PR?

jinsankim · 2023-02-20T18:12:22Z

@mattsse

can we please do the bare minimum for eth68 here and do the new message type in a separate PR?

little bit confusing. I need more guide about what's the bare minimum for eth68. I agree whatever we want for this PR, close, modify, revert only some part or whatever. But I can't catch what should I do for bare minimum.

mattsse · 2023-02-20T18:16:46Z

crates/net/network/src/message.rs

+/// Internal form of a `PooledTransactions` message
+/// Same as [`NewPooledTransactionHashes68`] but types and sizes are Option.
+#[derive(Debug, Clone)]
+pub struct NewPooledTransactionHashes {


please remove this type and instead move to separate PR

follow it up with f53e2a7.

mattsse · 2023-02-20T18:17:08Z

crates/net/eth-wire/src/types/broadcast.rs

+    pub hashes: Vec<H256>,
+}
+
+impl TryFrom<(Option<Vec<u8>>, Option<Vec<usize>>, Vec<H256>)> for NewPooledTransactionHashes68 {


please remove this trait impl entirely.

follow it up with f53e2a7.

jinsankim · 2023-02-20T18:35:39Z

@mattsse

What I've caught your direction from 2 todos,

minimize changes
only focusing incoming (even though it's adhoc)
remove outgoing

Am I understanding correctly?

mattsse · 2023-02-20T18:47:11Z

yeh, I want to merge this with just 68 support on the eth wire level to unblock hive tests.
and followup with the actual 68 tx handling (in network impl) separately

jinsankim · 2023-02-20T19:11:16Z

I have no knowledge for hive tests. But I've just concerned that if we send NewPooledTransactionHashes66 though eth/68, maybe tests will be failed.

I agree to merge PR step by step!

* minimize changes * remove `NewPooledTransactionHashes`

jinsankim · 2023-02-20T19:19:14Z

Now, in this PR, it could handle incoming eth/68 message but couldn't handle outgoing eth/68 message. I left a TODO comments for it.

gakonst

@mattsse calling this good, the logic for parsing msgs seems fine.

main 2 things are:

We do try_emit_broadcast w/o types/sizes to NewPooledTransactionHashes68 msgs, is this correct? Or will we get penalized?
The TODO at active.rs#Implement new transaction propagation #254

jinsankim · 2023-02-21T04:47:06Z

@gakonst

We do try_emit_broadcast w/o types/sizes to NewPooledTransactionHashes68 msgs, is this correct? Or will we get penalized?

I think the incoming handling will be working well. geth also uses types/sizes only to check validation. Internally we need only hashes at least now.

The TODO at active.rs##254

outgoing is removed from this PR because of unacceptable message structure. I hope it'll be followed up with #254 and also improve architecture for multi protocol in the future.

jinsankim · 2023-02-21T04:48:39Z

Coverage 76.19% 47.27% -28.93%

I think it's too weird. :(

jinsankim added 8 commits February 15, 2023 14:43

chore: impl eth/68

aab2d1c

fix: clippy and nits

736c57d

chore: check version for GetNodeData, NodeData

f0b2f92

chore: remove TODOs, check NewPooledTransactionHashes68 len of fields

6e0c6f4

chore: revise Capabilities & fix tests

e3d2cad

test: capabilities_supports_eth()

7ade142

chore: revise types

9c74b82

fix: EthStream::new()

46963e0

rkrasiuk added C-enhancement New feature or request A-devp2p Related to the Ethereum P2P protocol labels Feb 15, 2023

rkrasiuk self-requested a review February 15, 2023 08:18

jinsankim added 2 commits February 15, 2023 17:37

fix: fuzz tests

012ef53

chore: revise error handling for GetNodeData, NodeData

9e8543a

jinsankim marked this pull request as ready for review February 15, 2023 08:52

jinsankim requested review from mattsse and Rjected as code owners February 15, 2023 08:52

mattsse requested changes Feb 15, 2023

View reviewed changes

Rjected reviewed Feb 15, 2023

View reviewed changes

jinsankim added 3 commits February 16, 2023 12:59

chore: not enable Eth68

651fc4d

fix: test_session_established_with_highest_version

6e0c51d

chore: use EthVersion instead of u8

ca74056

mattsse requested changes Feb 17, 2023

View reviewed changes

Merge remote-tracking branch 'upstream/main' into feat-eth68

5ba25a6

jinsankim added 2 commits February 18, 2023 17:26

chore: change eth versions order as desc

b7b4b14

chore: revise EthMessage doc

011eb73

jinsankim and others added 3 commits February 19, 2023 13:38

Update crates/net/network/src/session/active.rs

e124f9a

Co-authored-by: Georgios Konstantopoulos <me@gakonst.com>

chore: use match for try_into()

d5da4f6

chore: rename pooled_transactions with pooled_transaction_hashes …

e1d007b

…and follow it up

gakonst requested changes Feb 20, 2023

View reviewed changes

mattsse requested changes Feb 20, 2023

View reviewed changes

jinsankim added 5 commits February 21, 2023 00:59

chore: revise EthStreamError::TransactionHashesInvalidLenOfFields

231f460

chore: remove From impls for tuples

acb0d81

chore(nit): remove explicit type

fb528ed

chore: revise decode_message Result

c70e2d2

chore(nit): revise debug message

517380e

mattsse reviewed Feb 20, 2023

View reviewed changes

chore: remove outgoing feature

f53e2a7

* minimize changes * remove `NewPooledTransactionHashes`

fix: remove unused imports in test

d43efa0

gakonst approved these changes Feb 21, 2023

View reviewed changes

test: test_removed_message_at_eth67()

3227771

gakonst merged commit c907592 into paradigmxyz:main Feb 21, 2023

jinsankim deleted the feat-eth68 branch February 21, 2023 04:39

gakonst mentioned this pull request Feb 21, 2023

Implement new transaction propagation #254

Closed

rkrasiuk mentioned this pull request Feb 21, 2023

chore: add eth68 to default capabilities #1475

Merged

		NewPooledTransactionHashes(NewPooledTransactionHashes),
		NewPooledTransactionHashes68(NewPooledTransactionHashes68),

feat(net): support eth/68 #1361

feat(net): support eth/68 #1361

Conversation

jinsankim commented Feb 15, 2023 • edited Loading

Motivation

Reference

codecov-commenter commented Feb 15, 2023 • edited Loading

Codecov Report

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jinsankim commented Feb 20, 2023

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