pub const DEFAULT_MAX_CONNECTIONS: u32 = 256;Expand description
Default cap on simultaneously open QUIC connections.
Sized against the rest of the budget rather than picked at random: what the
startup check compares against RLIMIT_NOFILE is
max_connections * max_targets_per_conn plus 64 descriptors of headroom,
which is 256 * 256 + 64 = 65600 here, against the LimitNOFILE=131072 the
shipped systemd unit sets. Raising either limit past that point means raising
LimitNOFILE with it.