Transport Configuration
Describes transport protocol selection and related inter-node communication knobs.
The dataplane supports multiple transport protocols for inter-node communication. The default protocol is TCP.
Runtime Configuration
All tuning happens through the standard dataplane configuration (config.toml or CLI flags):
Configuration file
# Transport protocol: tcp (default) | udp | quic
protocol = "tcp"
# When using QUIC, configure congestion control (bbr | cubic)
# quic_congestion_control = "bbr"To use QUIC instead of TCP:
protocol = "quic"
quic_congestion_control = "bbr"CLI Flags
Use --protocol quic --quic-congestion-control cubic on the CLI to switch to QUIC with CUBIC congestion control, and use --protocol udp to run dataplane links over UDP.
Operational Notes
The server keeps QUIC keep-alives enabled so idle tunnels remain established during quiet periods. MTU behavior is controlled by LocalConfig.mtu, so reduce that value when paths require tighter framing. On connection failures, endpoints retry automatically up to 10 times before aborting; if a node does not join, inspect dataplane logs for the remote address and failure reason.
The Python bindings always send a single TCP frame per send_to_node call; the OS networking stack handles any link-layer segmentation automatically, and the dataplane clamps lossless chunk sizes to respect the configured MTU. That keeps configuration simple — set mtu once, and both the Rust dataplane and the Python bindings inherit the same envelope.