emissary-core 0.4.0

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use crate::i2cp::message::{MessageType, I2CP_HEADER_SIZE};

use bytes::{BufMut, BytesMut};

/// `BandwidthLimits` message.
///
/// https://geti2p.net/spec/i2cp#bandwidthlimitsmessage
pub struct BandwidthLimits(());

impl BandwidthLimits {
    /// Create new [`BandwidthLimits`] message.
    pub fn new() -> BytesMut {
        let mut out = BytesMut::with_capacity(I2CP_HEADER_SIZE + 16 * 4);

        out.put_u32(16 * 4);
        out.put_u8(MessageType::BandwidthLimits.as_u8());

        out.put_u32(50); // client inbound limit (KBps)
        out.put_u32(50); // client outbound limit (KBps)
        out.put_u32(20); // router inbound limit (KBps)
        out.put_u32(20); // router inbound burst limit (KBps)
        out.put_u32(20); // router outbound limit (KBps)
        out.put_u32(20); // router outbound burst limit (KBps)
        out.put_u32(0); // router burst time (seconds)

        // nine 4-byte integers, undefined
        for _ in 0..9 {
            out.put_u32(0);
        }

        out
    }
}