lighthouse/beacon_node/lighthouse_network/tests/rpc_tests.rs
Divma b1d2510d1b Libp2p v0.48.0 upgrade (#3547)
## Issue Addressed

Upgrades libp2p to v.0.47.0. This is the compilation of
- [x] #3495 
- [x] #3497 
- [x] #3491 
- [x] #3546 
- [x] #3553 

Co-authored-by: Age Manning <Age@AgeManning.com>
2022-09-29 01:50:11 +00:00

899 lines
35 KiB
Rust

#![cfg(test)]
use lighthouse_network::rpc::methods::*;
use lighthouse_network::{rpc::max_rpc_size, NetworkEvent, ReportSource, Request, Response};
use slog::{debug, warn, Level};
use ssz::Encode;
use ssz_types::VariableList;
use std::sync::Arc;
use std::time::Duration;
use tokio::runtime::Runtime;
use tokio::time::sleep;
use types::{
BeaconBlock, BeaconBlockAltair, BeaconBlockBase, BeaconBlockMerge, Epoch, EthSpec, ForkContext,
ForkName, Hash256, MinimalEthSpec, Signature, SignedBeaconBlock, Slot,
};
mod common;
type E = MinimalEthSpec;
/// Merge block with length < max_rpc_size.
fn merge_block_small(fork_context: &ForkContext) -> BeaconBlock<E> {
let mut block = BeaconBlockMerge::<E>::empty(&E::default_spec());
let tx = VariableList::from(vec![0; 1024]);
let txs = VariableList::from(std::iter::repeat(tx).take(5000).collect::<Vec<_>>());
block.body.execution_payload.execution_payload.transactions = txs;
let block = BeaconBlock::Merge(block);
assert!(block.ssz_bytes_len() <= max_rpc_size(fork_context));
block
}
/// Merge block with length > MAX_RPC_SIZE.
/// The max limit for a merge block is in the order of ~16GiB which wouldn't fit in memory.
/// Hence, we generate a merge block just greater than `MAX_RPC_SIZE` to test rejection on the rpc layer.
fn merge_block_large(fork_context: &ForkContext) -> BeaconBlock<E> {
let mut block = BeaconBlockMerge::<E>::empty(&E::default_spec());
let tx = VariableList::from(vec![0; 1024]);
let txs = VariableList::from(std::iter::repeat(tx).take(100000).collect::<Vec<_>>());
block.body.execution_payload.execution_payload.transactions = txs;
let block = BeaconBlock::Merge(block);
assert!(block.ssz_bytes_len() > max_rpc_size(fork_context));
block
}
// Tests the STATUS RPC message
#[test]
#[allow(clippy::single_match)]
fn test_status_rpc() {
// set up the logging. The level and enabled logging or not
let log_level = Level::Debug;
let enable_logging = false;
let rt = Arc::new(Runtime::new().unwrap());
let log = common::build_log(log_level, enable_logging);
rt.block_on(async {
// get sender/receiver
let (mut sender, mut receiver) =
common::build_node_pair(Arc::downgrade(&rt), &log, ForkName::Base).await;
// Dummy STATUS RPC message
let rpc_request = Request::Status(StatusMessage {
fork_digest: [0; 4],
finalized_root: Hash256::from_low_u64_be(0),
finalized_epoch: Epoch::new(1),
head_root: Hash256::from_low_u64_be(0),
head_slot: Slot::new(1),
});
// Dummy STATUS RPC message
let rpc_response = Response::Status(StatusMessage {
fork_digest: [0; 4],
finalized_root: Hash256::from_low_u64_be(0),
finalized_epoch: Epoch::new(1),
head_root: Hash256::from_low_u64_be(0),
head_slot: Slot::new(1),
});
// build the sender future
let sender_future = async {
loop {
match sender.next_event().await {
NetworkEvent::PeerConnectedOutgoing(peer_id) => {
// Send a STATUS message
debug!(log, "Sending RPC");
sender.send_request(peer_id, 10, rpc_request.clone());
}
NetworkEvent::ResponseReceived {
peer_id: _,
id: 10,
response,
} => {
// Should receive the RPC response
debug!(log, "Sender Received");
assert_eq!(response, rpc_response.clone());
debug!(log, "Sender Completed");
return;
}
_ => {}
}
}
};
// build the receiver future
let receiver_future = async {
loop {
match receiver.next_event().await {
NetworkEvent::RequestReceived {
peer_id,
id,
request,
} => {
if request == rpc_request {
// send the response
debug!(log, "Receiver Received");
receiver.send_response(peer_id, id, rpc_response.clone());
}
}
_ => {} // Ignore other events
}
}
};
tokio::select! {
_ = sender_future => {}
_ = receiver_future => {}
_ = sleep(Duration::from_secs(30)) => {
panic!("Future timed out");
}
}
})
}
// Tests a streamed BlocksByRange RPC Message
#[test]
#[allow(clippy::single_match)]
fn test_blocks_by_range_chunked_rpc() {
// set up the logging. The level and enabled logging or not
let log_level = Level::Debug;
let enable_logging = false;
let messages_to_send = 6;
let log = common::build_log(log_level, enable_logging);
let rt = Arc::new(Runtime::new().unwrap());
rt.block_on(async {
// get sender/receiver
let (mut sender, mut receiver) =
common::build_node_pair(Arc::downgrade(&rt), &log, ForkName::Merge).await;
// BlocksByRange Request
let rpc_request = Request::BlocksByRange(BlocksByRangeRequest {
start_slot: 0,
count: messages_to_send,
});
let spec = E::default_spec();
// BlocksByRange Response
let full_block = BeaconBlock::Base(BeaconBlockBase::<E>::full(&spec));
let signed_full_block = SignedBeaconBlock::from_block(full_block, Signature::empty());
let rpc_response_base = Response::BlocksByRange(Some(Arc::new(signed_full_block)));
let full_block = BeaconBlock::Altair(BeaconBlockAltair::<E>::full(&spec));
let signed_full_block = SignedBeaconBlock::from_block(full_block, Signature::empty());
let rpc_response_altair = Response::BlocksByRange(Some(Arc::new(signed_full_block)));
let full_block = merge_block_small(&common::fork_context(ForkName::Merge));
let signed_full_block = SignedBeaconBlock::from_block(full_block, Signature::empty());
let rpc_response_merge_small = Response::BlocksByRange(Some(Arc::new(signed_full_block)));
// keep count of the number of messages received
let mut messages_received = 0;
let request_id = messages_to_send as usize;
// build the sender future
let sender_future = async {
loop {
match sender.next_event().await {
NetworkEvent::PeerConnectedOutgoing(peer_id) => {
// Send a STATUS message
debug!(log, "Sending RPC");
sender.send_request(peer_id, request_id, rpc_request.clone());
}
NetworkEvent::ResponseReceived {
peer_id: _,
id: _,
response,
} => {
warn!(log, "Sender received a response");
match response {
Response::BlocksByRange(Some(_)) => {
if messages_received < 2 {
assert_eq!(response, rpc_response_base.clone());
} else if messages_received < 4 {
assert_eq!(response, rpc_response_altair.clone());
} else {
assert_eq!(response, rpc_response_merge_small.clone());
}
messages_received += 1;
warn!(log, "Chunk received");
}
Response::BlocksByRange(None) => {
// should be exactly `messages_to_send` messages before terminating
assert_eq!(messages_received, messages_to_send);
// end the test
return;
}
_ => panic!("Invalid RPC received"),
}
}
_ => {} // Ignore other behaviour events
}
}
};
// build the receiver future
let receiver_future = async {
loop {
match receiver.next_event().await {
NetworkEvent::RequestReceived {
peer_id,
id,
request,
} => {
if request == rpc_request {
// send the response
warn!(log, "Receiver got request");
for i in 0..messages_to_send {
// Send first third of responses as base blocks,
// second as altair and third as merge.
let rpc_response = if i < 2 {
rpc_response_base.clone()
} else if i < 4 {
rpc_response_altair.clone()
} else {
rpc_response_merge_small.clone()
};
receiver.send_response(peer_id, id, rpc_response.clone());
}
// send the stream termination
receiver.send_response(peer_id, id, Response::BlocksByRange(None));
}
}
_ => {} // Ignore other events
}
}
};
tokio::select! {
_ = sender_future => {}
_ = receiver_future => {}
_ = sleep(Duration::from_secs(30)) => {
panic!("Future timed out");
}
}
})
}
// Tests rejection of blocks over `MAX_RPC_SIZE`.
#[test]
#[allow(clippy::single_match)]
fn test_blocks_by_range_over_limit() {
// set up the logging. The level and enabled logging or not
let log_level = Level::Debug;
let enable_logging = false;
let messages_to_send = 5;
let log = common::build_log(log_level, enable_logging);
let rt = Arc::new(Runtime::new().unwrap());
rt.block_on(async {
// get sender/receiver
let (mut sender, mut receiver) =
common::build_node_pair(Arc::downgrade(&rt), &log, ForkName::Merge).await;
// BlocksByRange Request
let rpc_request = Request::BlocksByRange(BlocksByRangeRequest {
start_slot: 0,
count: messages_to_send,
});
// BlocksByRange Response
let full_block = merge_block_large(&common::fork_context(ForkName::Merge));
let signed_full_block = SignedBeaconBlock::from_block(full_block, Signature::empty());
let rpc_response_merge_large = Response::BlocksByRange(Some(Arc::new(signed_full_block)));
let request_id = messages_to_send as usize;
// build the sender future
let sender_future = async {
loop {
match sender.next_event().await {
NetworkEvent::PeerConnectedOutgoing(peer_id) => {
// Send a STATUS message
debug!(log, "Sending RPC");
sender.send_request(peer_id, request_id, rpc_request.clone());
}
// The request will fail because the sender will refuse to send anything > MAX_RPC_SIZE
NetworkEvent::RPCFailed { id, .. } => {
assert_eq!(id, request_id);
return;
}
_ => {} // Ignore other behaviour events
}
}
};
// build the receiver future
let receiver_future = async {
loop {
match receiver.next_event().await {
NetworkEvent::RequestReceived {
peer_id,
id,
request,
} => {
if request == rpc_request {
// send the response
warn!(log, "Receiver got request");
for _ in 0..messages_to_send {
let rpc_response = rpc_response_merge_large.clone();
receiver.send_response(peer_id, id, rpc_response.clone());
}
// send the stream termination
receiver.send_response(peer_id, id, Response::BlocksByRange(None));
}
}
_ => {} // Ignore other events
}
}
};
tokio::select! {
_ = sender_future => {}
_ = receiver_future => {}
_ = sleep(Duration::from_secs(30)) => {
panic!("Future timed out");
}
}
})
}
// Tests that a streamed BlocksByRange RPC Message terminates when all expected chunks were received
#[test]
fn test_blocks_by_range_chunked_rpc_terminates_correctly() {
// set up the logging. The level and enabled logging or not
let log_level = Level::Debug;
let enable_logging = false;
let messages_to_send = 10;
let extra_messages_to_send = 10;
let log = common::build_log(log_level, enable_logging);
let rt = Arc::new(Runtime::new().unwrap());
rt.block_on(async {
// get sender/receiver
let (mut sender, mut receiver) =
common::build_node_pair(Arc::downgrade(&rt), &log, ForkName::Base).await;
// BlocksByRange Request
let rpc_request = Request::BlocksByRange(BlocksByRangeRequest {
start_slot: 0,
count: messages_to_send,
});
// BlocksByRange Response
let spec = E::default_spec();
let empty_block = BeaconBlock::empty(&spec);
let empty_signed = SignedBeaconBlock::from_block(empty_block, Signature::empty());
let rpc_response = Response::BlocksByRange(Some(Arc::new(empty_signed)));
// keep count of the number of messages received
let mut messages_received: u64 = 0;
let request_id = messages_to_send as usize;
// build the sender future
let sender_future = async {
loop {
match sender.next_event().await {
NetworkEvent::PeerConnectedOutgoing(peer_id) => {
// Send a STATUS message
debug!(log, "Sending RPC");
sender.send_request(peer_id, request_id, rpc_request.clone());
}
NetworkEvent::ResponseReceived {
peer_id: _,
id: _,
response,
} =>
// Should receive the RPC response
{
debug!(log, "Sender received a response");
match response {
Response::BlocksByRange(Some(_)) => {
assert_eq!(response, rpc_response.clone());
messages_received += 1;
}
Response::BlocksByRange(None) => {
// should be exactly 10 messages, as requested
assert_eq!(messages_received, messages_to_send);
}
_ => panic!("Invalid RPC received"),
}
}
_ => {} // Ignore other behaviour events
}
}
};
// determine messages to send (PeerId, RequestId). If some, indicates we still need to send
// messages
let mut message_info = None;
// the number of messages we've sent
let mut messages_sent = 0;
let receiver_future = async {
loop {
// this future either drives the sending/receiving or times out allowing messages to be
// sent in the timeout
match futures::future::select(
Box::pin(receiver.next_event()),
Box::pin(tokio::time::sleep(Duration::from_secs(1))),
)
.await
{
futures::future::Either::Left((
NetworkEvent::RequestReceived {
peer_id,
id,
request,
},
_,
)) => {
if request == rpc_request {
// send the response
warn!(log, "Receiver got request");
message_info = Some((peer_id, id));
}
}
futures::future::Either::Right((_, _)) => {} // The timeout hit, send messages if required
_ => continue,
}
// if we need to send messages send them here. This will happen after a delay
if message_info.is_some() {
messages_sent += 1;
let (peer_id, stream_id) = message_info.as_ref().unwrap();
receiver.send_response(*peer_id, *stream_id, rpc_response.clone());
debug!(log, "Sending message {}", messages_sent);
if messages_sent == messages_to_send + extra_messages_to_send {
// stop sending messages
return;
}
}
}
};
tokio::select! {
_ = sender_future => {}
_ = receiver_future => {}
_ = sleep(Duration::from_secs(30)) => {
panic!("Future timed out");
}
}
})
}
// Tests an empty response to a BlocksByRange RPC Message
#[test]
#[allow(clippy::single_match)]
fn test_blocks_by_range_single_empty_rpc() {
// set up the logging. The level and enabled logging or not
let log_level = Level::Trace;
let enable_logging = false;
let log = common::build_log(log_level, enable_logging);
let rt = Arc::new(Runtime::new().unwrap());
rt.block_on(async {
// get sender/receiver
let (mut sender, mut receiver) =
common::build_node_pair(Arc::downgrade(&rt), &log, ForkName::Base).await;
// BlocksByRange Request
let rpc_request = Request::BlocksByRange(BlocksByRangeRequest {
start_slot: 0,
count: 10,
});
// BlocksByRange Response
let spec = E::default_spec();
let empty_block = BeaconBlock::empty(&spec);
let empty_signed = SignedBeaconBlock::from_block(empty_block, Signature::empty());
let rpc_response = Response::BlocksByRange(Some(Arc::new(empty_signed)));
let messages_to_send = 1;
// keep count of the number of messages received
let mut messages_received = 0;
// build the sender future
let sender_future = async {
loop {
match sender.next_event().await {
NetworkEvent::PeerConnectedOutgoing(peer_id) => {
// Send a STATUS message
debug!(log, "Sending RPC");
sender.send_request(peer_id, 10, rpc_request.clone());
}
NetworkEvent::ResponseReceived {
peer_id: _,
id: 10,
response,
} => match response {
Response::BlocksByRange(Some(_)) => {
assert_eq!(response, rpc_response.clone());
messages_received += 1;
warn!(log, "Chunk received");
}
Response::BlocksByRange(None) => {
// should be exactly 10 messages before terminating
assert_eq!(messages_received, messages_to_send);
// end the test
return;
}
_ => panic!("Invalid RPC received"),
},
_ => {} // Ignore other behaviour events
}
}
};
// build the receiver future
let receiver_future = async {
loop {
match receiver.next_event().await {
NetworkEvent::RequestReceived {
peer_id,
id,
request,
} => {
if request == rpc_request {
// send the response
warn!(log, "Receiver got request");
for _ in 1..=messages_to_send {
receiver.send_response(peer_id, id, rpc_response.clone());
}
// send the stream termination
receiver.send_response(peer_id, id, Response::BlocksByRange(None));
}
}
_ => {} // Ignore other events
}
}
};
tokio::select! {
_ = sender_future => {}
_ = receiver_future => {}
_ = sleep(Duration::from_secs(20)) => {
panic!("Future timed out");
}
}
})
}
// Tests a streamed, chunked BlocksByRoot RPC Message
// The size of the reponse is a full `BeaconBlock`
// which is greater than the Snappy frame size. Hence, this test
// serves to test the snappy framing format as well.
#[test]
#[allow(clippy::single_match)]
fn test_blocks_by_root_chunked_rpc() {
// set up the logging. The level and enabled logging or not
let log_level = Level::Debug;
let enable_logging = false;
let messages_to_send = 6;
let log = common::build_log(log_level, enable_logging);
let spec = E::default_spec();
let rt = Arc::new(Runtime::new().unwrap());
// get sender/receiver
rt.block_on(async {
let (mut sender, mut receiver) =
common::build_node_pair(Arc::downgrade(&rt), &log, ForkName::Merge).await;
// BlocksByRoot Request
let rpc_request = Request::BlocksByRoot(BlocksByRootRequest {
block_roots: VariableList::from(vec![
Hash256::from_low_u64_be(0),
Hash256::from_low_u64_be(0),
Hash256::from_low_u64_be(0),
Hash256::from_low_u64_be(0),
Hash256::from_low_u64_be(0),
Hash256::from_low_u64_be(0),
]),
});
// BlocksByRoot Response
let full_block = BeaconBlock::Base(BeaconBlockBase::<E>::full(&spec));
let signed_full_block = SignedBeaconBlock::from_block(full_block, Signature::empty());
let rpc_response_base = Response::BlocksByRoot(Some(Arc::new(signed_full_block)));
let full_block = BeaconBlock::Altair(BeaconBlockAltair::<E>::full(&spec));
let signed_full_block = SignedBeaconBlock::from_block(full_block, Signature::empty());
let rpc_response_altair = Response::BlocksByRoot(Some(Arc::new(signed_full_block)));
let full_block = merge_block_small(&common::fork_context(ForkName::Merge));
let signed_full_block = SignedBeaconBlock::from_block(full_block, Signature::empty());
let rpc_response_merge_small = Response::BlocksByRoot(Some(Arc::new(signed_full_block)));
// keep count of the number of messages received
let mut messages_received = 0;
// build the sender future
let sender_future = async {
loop {
match sender.next_event().await {
NetworkEvent::PeerConnectedOutgoing(peer_id) => {
// Send a STATUS message
debug!(log, "Sending RPC");
sender.send_request(peer_id, 6, rpc_request.clone());
}
NetworkEvent::ResponseReceived {
peer_id: _,
id: 6,
response,
} => match response {
Response::BlocksByRoot(Some(_)) => {
if messages_received < 2 {
assert_eq!(response, rpc_response_base.clone());
} else if messages_received < 4 {
assert_eq!(response, rpc_response_altair.clone());
} else {
assert_eq!(response, rpc_response_merge_small.clone());
}
messages_received += 1;
debug!(log, "Chunk received");
}
Response::BlocksByRoot(None) => {
// should be exactly messages_to_send
assert_eq!(messages_received, messages_to_send);
// end the test
return;
}
_ => {} // Ignore other RPC messages
},
_ => {} // Ignore other behaviour events
}
}
};
// build the receiver future
let receiver_future = async {
loop {
match receiver.next_event().await {
NetworkEvent::RequestReceived {
peer_id,
id,
request,
} => {
if request == rpc_request {
// send the response
debug!(log, "Receiver got request");
for i in 0..messages_to_send {
// Send equal base, altair and merge blocks
let rpc_response = if i < 2 {
rpc_response_base.clone()
} else if i < 4 {
rpc_response_altair.clone()
} else {
rpc_response_merge_small.clone()
};
receiver.send_response(peer_id, id, rpc_response);
debug!(log, "Sending message");
}
// send the stream termination
receiver.send_response(peer_id, id, Response::BlocksByRange(None));
debug!(log, "Send stream term");
}
}
_ => {} // Ignore other events
}
}
};
tokio::select! {
_ = sender_future => {}
_ = receiver_future => {}
_ = sleep(Duration::from_secs(30)) => {
panic!("Future timed out");
}
}
})
}
// Tests a streamed, chunked BlocksByRoot RPC Message terminates when all expected reponses have been received
#[test]
fn test_blocks_by_root_chunked_rpc_terminates_correctly() {
// set up the logging. The level and enabled logging or not
let log_level = Level::Debug;
let enable_logging = false;
let messages_to_send: u64 = 10;
let extra_messages_to_send: u64 = 10;
let log = common::build_log(log_level, enable_logging);
let spec = E::default_spec();
let rt = Arc::new(Runtime::new().unwrap());
// get sender/receiver
rt.block_on(async {
let (mut sender, mut receiver) =
common::build_node_pair(Arc::downgrade(&rt), &log, ForkName::Base).await;
// BlocksByRoot Request
let rpc_request = Request::BlocksByRoot(BlocksByRootRequest {
block_roots: VariableList::from(vec![
Hash256::from_low_u64_be(0),
Hash256::from_low_u64_be(0),
Hash256::from_low_u64_be(0),
Hash256::from_low_u64_be(0),
Hash256::from_low_u64_be(0),
Hash256::from_low_u64_be(0),
Hash256::from_low_u64_be(0),
Hash256::from_low_u64_be(0),
Hash256::from_low_u64_be(0),
Hash256::from_low_u64_be(0),
]),
});
// BlocksByRoot Response
let full_block = BeaconBlock::Base(BeaconBlockBase::<E>::full(&spec));
let signed_full_block = SignedBeaconBlock::from_block(full_block, Signature::empty());
let rpc_response = Response::BlocksByRoot(Some(Arc::new(signed_full_block)));
// keep count of the number of messages received
let mut messages_received = 0;
// build the sender future
let sender_future = async {
loop {
match sender.next_event().await {
NetworkEvent::PeerConnectedOutgoing(peer_id) => {
// Send a STATUS message
debug!(log, "Sending RPC");
sender.send_request(peer_id, 10, rpc_request.clone());
}
NetworkEvent::ResponseReceived {
peer_id: _,
id: 10,
response,
} => {
debug!(log, "Sender received a response");
match response {
Response::BlocksByRoot(Some(_)) => {
assert_eq!(response, rpc_response.clone());
messages_received += 1;
debug!(log, "Chunk received");
}
Response::BlocksByRoot(None) => {
// should be exactly messages_to_send
assert_eq!(messages_received, messages_to_send);
// end the test
return;
}
_ => {} // Ignore other RPC messages
}
}
_ => {} // Ignore other behaviour events
}
}
};
// determine messages to send (PeerId, RequestId). If some, indicates we still need to send
// messages
let mut message_info = None;
// the number of messages we've sent
let mut messages_sent = 0;
let receiver_future = async {
loop {
// this future either drives the sending/receiving or times out allowing messages to be
// sent in the timeout
match futures::future::select(
Box::pin(receiver.next_event()),
Box::pin(tokio::time::sleep(Duration::from_secs(1))),
)
.await
{
futures::future::Either::Left((
NetworkEvent::RequestReceived {
peer_id,
id,
request,
},
_,
)) => {
if request == rpc_request {
// send the response
warn!(log, "Receiver got request");
message_info = Some((peer_id, id));
}
}
futures::future::Either::Right((_, _)) => {} // The timeout hit, send messages if required
_ => continue,
}
// if we need to send messages send them here. This will happen after a delay
if message_info.is_some() {
messages_sent += 1;
let (peer_id, stream_id) = message_info.as_ref().unwrap();
receiver.send_response(*peer_id, *stream_id, rpc_response.clone());
debug!(log, "Sending message {}", messages_sent);
if messages_sent == messages_to_send + extra_messages_to_send {
// stop sending messages
return;
}
}
}
};
tokio::select! {
_ = sender_future => {}
_ = receiver_future => {}
_ = sleep(Duration::from_secs(30)) => {
panic!("Future timed out");
}
}
})
}
// Tests a Goodbye RPC message
#[test]
#[allow(clippy::single_match)]
fn test_goodbye_rpc() {
// set up the logging. The level and enabled logging or not
let log_level = Level::Trace;
let enable_logging = false;
let log = common::build_log(log_level, enable_logging);
let rt = Arc::new(Runtime::new().unwrap());
// get sender/receiver
rt.block_on(async {
let (mut sender, mut receiver) =
common::build_node_pair(Arc::downgrade(&rt), &log, ForkName::Base).await;
// build the sender future
let sender_future = async {
loop {
match sender.next_event().await {
NetworkEvent::PeerConnectedOutgoing(peer_id) => {
// Send a goodbye and disconnect
debug!(log, "Sending RPC");
sender.goodbye_peer(
&peer_id,
GoodbyeReason::IrrelevantNetwork,
ReportSource::SyncService,
);
}
NetworkEvent::PeerDisconnected(_) => {
return;
}
_ => {} // Ignore other RPC messages
}
}
};
// build the receiver future
let receiver_future = async {
loop {
match receiver.next_event().await {
NetworkEvent::PeerDisconnected(_) => {
// Should receive sent RPC request
return;
}
_ => {} // Ignore other events
}
}
};
let total_future = futures::future::join(sender_future, receiver_future);
tokio::select! {
_ = total_future => {}
_ = sleep(Duration::from_secs(30)) => {
panic!("Future timed out");
}
}
})
}