Struct SocketConfig 

pub struct SocketConfig {
    pub recv_buffer_size: usize,
    pub send_buffer_size: usize,
    pub busy_poll_us: u32,
    pub ip_tos: u8,
    pub priority: u32,
    pub reuse_addr: bool,
    pub reuse_port: bool,
    pub tcp_nodelay: bool,
}

Socket tuning configuration for low-latency networking.

Fields

recv_buffer_size: usize

Receive buffer size in bytes (SO_RCVBUF). Larger values reduce packet drops under load. Default: 4MB

send_buffer_size: usize

Send buffer size in bytes (SO_SNDBUF). Larger values allow more in-flight packets. Default: 4MB

busy_poll_us: u32

Busy poll timeout in microseconds (SO_BUSY_POLL). Set to 0 to disable. Requires CAP_NET_ADMIN. Trades CPU for lower latency. Default: 50µs

ip_tos: u8

IP Type of Service / DSCP value (IP_TOS). Common values:

• 0x00: Best effort
• 0x10: Low delay (DSCP CS1)
• 0xB8: Expedited forwarding (DSCP EF, 46 << 2) Default: 0xB8 (EF - Expedited Forwarding for real-time)

priority: u32

Socket priority (SO_PRIORITY). Higher values = higher priority (0-6). Default: 6 (highest)

reuse_addr: bool

Enable SO_REUSEADDR. Default: true

reuse_port: bool

Enable SO_REUSEPORT (Linux 3.9+). Allows multiple sockets on same port for load balancing. Default: false

tcp_nodelay: bool

Disable Nagle’s algorithm for TCP (TCP_NODELAY). Already disabled by default in most cases. Default: true

Implementations

impl SocketConfig

pub fn low_latency() -> Self

Configuration optimized for minimal latency. Uses aggressive CPU polling.

pub fn high_throughput() -> Self

Configuration optimized for high throughput. Larger buffers, less CPU polling.

pub fn apply_udp(&self, socket: &UdpSocket) -> Result<()>

Apply configuration to a UDP socket.

Trait Implementations

impl Clone for SocketConfig

fn clone(&self) -> SocketConfig

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SocketConfig

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for SocketConfig

fn default() -> Self

Returns the “default value” for a type.