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fix: changes to opening new stream, setting quic connection parameters

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1. Do not dial to open a new stream, use existing swarm connection in quic transport to open new stream
2. Derive values from quic config for quic stream configuration
3. Set quic-v1 config only if enabled
This commit is contained in:
Akash Mondal
2025-08-16 18:28:04 +00:00
committed by lla-dane
parent 933741b190
commit 58433f9b52
3 changed files with 53 additions and 38 deletions
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9
libp2p/network/swarm.py
View File

@ -245,6 +245,13 @@ class Swarm(Service, INetworkService):
"""
logger.debug("attempting to open a stream to peer %s", peer_id)
if (
isinstance(self.transport, QUICTransport)
and self.connections[peer_id] is not None
):
conn = cast(SwarmConn, self.connections[peer_id])
return await conn.new_stream()
swarm_conn = await self.dial_peer(peer_id)
net_stream = await swarm_conn.new_stream()
logger.debug("successfully opened a stream to peer %s", peer_id)
@ -286,7 +293,7 @@ class Swarm(Service, INetworkService):
await self.add_conn(quic_conn)
peer_id = quic_conn.peer_id
logger.debug(
f"successfully opened connection to peer {peer_id}"
f"successfully opened quic connection to peer {peer_id}"
)
# NOTE: This is a intentional barrier to prevent from the
# handler exiting and closing the connection.

19
libp2p/transport/quic/stream.py
View File

@ -86,12 +86,6 @@ class QUICStream(IMuxedStream):
- Implements proper stream lifecycle management
"""
# Configuration constants based on research
DEFAULT_READ_TIMEOUT = 30.0 # 30 seconds
DEFAULT_WRITE_TIMEOUT = 30.0 # 30 seconds
FLOW_CONTROL_WINDOW_SIZE = 512 * 1024 # 512KB per stream
MAX_RECEIVE_BUFFER_SIZE = 1024 * 1024 # 1MB max buffering
def __init__(
self,
connection: "QUICConnection",
@ -144,6 +138,17 @@ class QUICStream(IMuxedStream):
# Resource accounting
self._memory_reserved = 0
# Stream constant configurations
self.READ_TIMEOUT = connection._transport._config.STREAM_READ_TIMEOUT
self.WRITE_TIMEOUT = connection._transport._config.STREAM_WRITE_TIMEOUT
self.FLOW_CONTROL_WINDOW_SIZE = (
connection._transport._config.STREAM_FLOW_CONTROL_WINDOW
)
self.MAX_RECEIVE_BUFFER_SIZE = (
connection._transport._config.MAX_STREAM_RECEIVE_BUFFER
)
if self._resource_scope:
self._reserve_memory(self.FLOW_CONTROL_WINDOW_SIZE)
@ -226,7 +231,7 @@ class QUICStream(IMuxedStream):
return b""
# Wait for data with timeout
timeout = self.DEFAULT_READ_TIMEOUT
timeout = self.READ_TIMEOUT
try:
with trio.move_on_after(timeout) as cancel_scope:
while True:

63
libp2p/transport/quic/transport.py
View File

@ -114,12 +114,14 @@ class QUICTransport(ITransport):
self._swarm: Swarm | None = None
print(f"Initialized QUIC transport with security for peer {self._peer_id}")
logger.debug(
f"Initialized QUIC transport with security for peer {self._peer_id}"
)
def set_background_nursery(self, nursery: trio.Nursery) -> None:
"""Set the nursery to use for background tasks (called by swarm)."""
self._background_nursery = nursery
print("Transport background nursery set")
logger.debug("Transport background nursery set")
def set_swarm(self, swarm: Swarm) -> None:
"""Set the swarm for adding incoming connections."""
@ -155,27 +157,28 @@ class QUICTransport(ITransport):
self._apply_tls_configuration(base_client_config, client_tls_config)
# QUIC v1 (RFC 9000) configurations
quic_v1_server_config = create_server_config_from_base(
base_server_config, self._security_manager, self._config
)
quic_v1_server_config.supported_versions = [
quic_version_to_wire_format(QUIC_V1_PROTOCOL)
]
if self._config.enable_v1:
quic_v1_server_config = create_server_config_from_base(
base_server_config, self._security_manager, self._config
)
quic_v1_server_config.supported_versions = [
quic_version_to_wire_format(QUIC_V1_PROTOCOL)
]
quic_v1_client_config = create_client_config_from_base(
base_client_config, self._security_manager, self._config
)
quic_v1_client_config.supported_versions = [
quic_version_to_wire_format(QUIC_V1_PROTOCOL)
]
quic_v1_client_config = create_client_config_from_base(
base_client_config, self._security_manager, self._config
)
quic_v1_client_config.supported_versions = [
quic_version_to_wire_format(QUIC_V1_PROTOCOL)
]
# Store both server and client configs for v1
self._quic_configs[TProtocol(f"{QUIC_V1_PROTOCOL}_server")] = (
quic_v1_server_config
)
self._quic_configs[TProtocol(f"{QUIC_V1_PROTOCOL}_client")] = (
quic_v1_client_config
)
# Store both server and client configs for v1
self._quic_configs[TProtocol(f"{QUIC_V1_PROTOCOL}_server")] = (
quic_v1_server_config
)
self._quic_configs[TProtocol(f"{QUIC_V1_PROTOCOL}_client")] = (
quic_v1_client_config
)
# QUIC draft-29 configurations for compatibility
if self._config.enable_draft29:
@ -196,7 +199,7 @@ class QUICTransport(ITransport):
draft29_client_config
)
print("QUIC configurations initialized with libp2p TLS security")
logger.debug("QUIC configurations initialized with libp2p TLS security")
except Exception as e:
raise QUICSecurityError(
@ -221,7 +224,7 @@ class QUICTransport(ITransport):
config.alpn_protocols = tls_config.alpn_protocols
config.verify_mode = ssl.CERT_NONE
print("Successfully applied TLS configuration to QUIC config")
logger.debug("Successfully applied TLS configuration to QUIC config")
except Exception as e:
raise QUICSecurityError(f"Failed to apply TLS configuration: {e}") from e
@ -267,7 +270,7 @@ class QUICTransport(ITransport):
# Get appropriate QUIC client configuration
config_key = TProtocol(f"{quic_version}_client")
print("config_key", config_key, self._quic_configs.keys())
logger.debug("config_key", config_key, self._quic_configs.keys())
config = self._quic_configs.get(config_key)
if not config:
raise QUICDialError(f"Unsupported QUIC version: {quic_version}")
@ -303,7 +306,7 @@ class QUICTransport(ITransport):
transport=self,
security_manager=self._security_manager,
)
print("QUIC Connection Created")
logger.debug("QUIC Connection Created")
if self._background_nursery is None:
logger.error("No nursery set to execute background tasks")
@ -353,8 +356,8 @@ class QUICTransport(ITransport):
f"{expected_peer_id}, got {verified_peer_id}"
)
print(f"Peer identity verified: {verified_peer_id}")
print(f"Peer identity verified: {verified_peer_id}")
logger.debug(f"Peer identity verified: {verified_peer_id}")
logger.debug(f"Peer identity verified: {verified_peer_id}")
except Exception as e:
raise QUICSecurityError(f"Peer identity verification failed: {e}") from e
@ -392,7 +395,7 @@ class QUICTransport(ITransport):
)
self._listeners.append(listener)
print("Created QUIC listener with security")
logger.debug("Created QUIC listener with security")
return listener
def can_dial(self, maddr: multiaddr.Multiaddr) -> bool:
@ -438,7 +441,7 @@ class QUICTransport(ITransport):
return
self._closed = True
print("Closing QUIC transport")
logger.debug("Closing QUIC transport")
# Close all active connections and listeners concurrently using trio nursery
async with trio.open_nursery() as nursery:
@ -453,7 +456,7 @@ class QUICTransport(ITransport):
self._connections.clear()
self._listeners.clear()
print("QUIC transport closed")
logger.debug("QUIC transport closed")
async def _cleanup_terminated_connection(self, connection: QUICConnection) -> None:
"""Clean up a terminated connection from all listeners."""