simnet

package module

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Versions in this module

v0

v0.0.7

May 2, 2026

v0.0.6

Mar 31, 2026

v0.0.5

Jan 26, 2026

v0.0.4

Dec 1, 2025

Changes in this version

+ const DefaultFlowBucketCount

+ func StaticLatency(duration time.Duration) func(*Packet) time.Duration

+ type DropReason string

+ const DropReasonFirewalled

+ const DropReasonUnknownDestination

+ const DropReasonUnknownSource

type LinkSettings

+ FlowBucketCount int

+ type OnDrop func(packet Packet, reason DropReason)

+ func LogOnDrop(logger *slog.Logger) OnDrop

type Packet

+ func (p *Packet) Hash(h *maphash.Hash) uint64

type PerfectRouter

+ OnDrop OnDrop

+ func (r *PerfectRouter) RecvPacket(p Packet)

+ type RateLink struct

+ BitsPerSecond int

+ Receiver PacketReceiver

+ func NewRateLink(bandwidth int, burstSize int, receiver PacketReceiver) *RateLink

+ func (l *RateLink) RecvPacket(p Packet)

+ func (l *RateLink) Reserve(now time.Time, packetSize int) time.Duration

type SimConn

+ func (c *SimConn) SetUpPacketReceiver(r PacketReceiver)

+ type Simlink struct

+ func NewSimlink(closeSignal chan struct{}, linkSettings NodeBiDiLinkSettings, ...) *Simlink

+ func (l *Simlink) Start(wg *sync.WaitGroup)

type Simnet

+ LatencyFunc func(*Packet) time.Duration

+ Logger *slog.Logger

type SimpleFirewallRouter

+ OnDrop OnDrop

+ func (r *SimpleFirewallRouter) RecvPacket(p Packet)

+ type VariableLatencyRouter struct

+ CloseSignal chan struct{}

+ LatencyFunc func(packet *Packet) time.Duration

+ func (r *VariableLatencyRouter) RecvPacket(p Packet)

+ func (r *VariableLatencyRouter) Start(wg *sync.WaitGroup)

v0.0.3

Oct 22, 2025

v0.0.2

Oct 20, 2025

Changes in this version

type NodeBiDiLinkSettings

+ Latency time.Duration

+ LatencyFunc func(Packet) time.Duration

type SimulatedLink

+ Latency time.Duration

+ LatencyFunc func(Packet) time.Duration

v0.0.1

Aug 13, 2025

Changes in this version

+ const Mibps

+ var ErrDeadlineExceeded = errors.New("deadline exceeded")

+ func IntToPublicIPv4(n int) net.IP

+ type ConnStats struct

+ BytesRcvd int

+ BytesSent int

+ PacketsRcvd int

+ PacketsSent int

+ type DelayedPacketReciever struct

+ func (r *DelayedPacketReciever) RecvPacket(p Packet)

+ type FixedLatencyRouter struct

+ func (r *FixedLatencyRouter) AddNode(addr net.Addr, conn PacketReceiver)

+ func (r *FixedLatencyRouter) SendPacket(p Packet) error

+ type LinkSettings struct

+ BitsPerSecond int

+ Latency time.Duration

+ MTU int

+ type NodeBiDiLinkSettings struct

+ Downlink LinkSettings

+ Uplink LinkSettings

+ type Packet struct

+ From net.Addr

+ To net.Addr

+ type PacketReceiver interface

+ RecvPacket func(p Packet)

+ type PerfectRouter struct

+ func (r *PerfectRouter) AddNode(addr net.Addr, conn PacketReceiver)

+ func (r *PerfectRouter) RemoveNode(addr net.Addr)

+ func (r *PerfectRouter) SendPacket(p Packet) error

+ type Router interface

+ AddNode func(addr net.Addr, receiver PacketReceiver)

+ SendPacket func(p Packet) error

+ type SimConn struct

+ func NewBlockingSimConn(addr *net.UDPAddr, rtr Router) *SimConn

+ func NewSimConn(addr *net.UDPAddr, rtr Router) *SimConn

+ func (c *SimConn) Close() error

+ func (c *SimConn) LocalAddr() net.Addr

+ func (c *SimConn) ReadFrom(p []byte) (n int, addr net.Addr, err error)

+ func (c *SimConn) RecvPacket(p Packet)

+ func (c *SimConn) SetDeadline(t time.Time) error

+ func (c *SimConn) SetLocalAddr(addr net.Addr)

+ func (c *SimConn) SetReadBuffer(n int) error

+ func (c *SimConn) SetReadDeadline(t time.Time) error

+ func (c *SimConn) SetWriteBuffer(n int) error

+ func (c *SimConn) SetWriteDeadline(t time.Time) error

+ func (c *SimConn) Stats() ConnStats

+ func (c *SimConn) UnicastAddr() net.Addr

+ func (c *SimConn) WriteTo(p []byte, addr net.Addr) (n int, err error)

+ type Simnet struct

+ func (n *Simnet) Close() error

+ func (n *Simnet) NewEndpoint(addr *net.UDPAddr, linkSettings NodeBiDiLinkSettings) *SimConn

+ func (n *Simnet) Start() error

+ type SimpleFirewallRouter struct

+ func (r *SimpleFirewallRouter) AddNode(addr net.Addr, conn PacketReceiver)

+ func (r *SimpleFirewallRouter) RemoveNode(addr net.Addr)

+ func (r *SimpleFirewallRouter) SendPacket(p Packet) error

+ func (r *SimpleFirewallRouter) SetAddrPubliclyReachable(addr net.Addr)

+ func (r *SimpleFirewallRouter) String() string

+ type SimulatedLink struct

+ DownlinkSettings LinkSettings

+ UplinkSettings LinkSettings

+ UploadPacket Router

+ func (l *SimulatedLink) AddNode(addr net.Addr, receiver PacketReceiver)

+ func (l *SimulatedLink) Close() error

+ func (l *SimulatedLink) RecvPacket(p Packet)

+ func (l *SimulatedLink) SendPacket(p Packet) error

+ func (l *SimulatedLink) Start()

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