solana/sdk/src/quic.rs

pub const QUIC_PORT_OFFSET: u16 = 6;
// Empirically found max number of concurrent streams
// that seems to maximize TPS on GCE (higher values don't seem to
// give significant improvement or seem to impact stability)
pub const QUIC_MAX_CONCURRENT_STREAMS: usize = 2048;

pub const QUIC_MAX_TIMEOUT_MS: u32 = 2_000;
pub const QUIC_KEEP_ALIVE_MS: u64 = 1_000;