mirror of
https://github.com/yggdrasil-network/yggdrasil-go.git
synced 2025-10-31 17:25:06 +03:00
WIP moving IP-specific checks from tuntap to core
This commit is contained in:
Arceliar
parent
bb66851c2b
commit
1147ee1934
9 changed files with 339 additions and 220 deletions
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@ -1,157 +0,0 @@
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package tuntap
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import (
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"crypto/ed25519"
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"sync"
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"time"
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iwt "github.com/Arceliar/ironwood/types"
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"github.com/yggdrasil-network/yggdrasil-go/src/address"
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)
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const keyStoreTimeout = 2 * time.Minute
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type keyStore struct {
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tun *TunAdapter
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mutex sync.Mutex
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keyToInfo map[keyArray]*keyInfo
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addrToInfo map[address.Address]*keyInfo
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addrBuffer map[address.Address]*buffer
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subnetToInfo map[address.Subnet]*keyInfo
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subnetBuffer map[address.Subnet]*buffer
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}
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type keyArray [ed25519.PublicKeySize]byte
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type keyInfo struct {
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key keyArray
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address address.Address
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subnet address.Subnet
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timeout *time.Timer // From calling a time.AfterFunc to do cleanup
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}
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type buffer struct {
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packets [][]byte
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timeout *time.Timer
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}
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func (k *keyStore) init(tun *TunAdapter) {
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k.tun = tun
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k.keyToInfo = make(map[keyArray]*keyInfo)
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k.addrToInfo = make(map[address.Address]*keyInfo)
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k.addrBuffer = make(map[address.Address]*buffer)
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k.subnetToInfo = make(map[address.Subnet]*keyInfo)
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k.subnetBuffer = make(map[address.Subnet]*buffer)
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}
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func (k *keyStore) sendToAddress(addr address.Address, bs []byte) {
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k.mutex.Lock()
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if info := k.addrToInfo[addr]; info != nil {
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k.resetTimeout(info)
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k.mutex.Unlock()
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_, _ = k.tun.core.WriteTo(bs, iwt.Addr(info.key[:]))
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} else {
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var buf *buffer
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if buf = k.addrBuffer[addr]; buf == nil {
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buf = new(buffer)
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k.addrBuffer[addr] = buf
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}
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msg := append([]byte(nil), bs...)
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buf.packets = append(buf.packets, msg)
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if buf.timeout != nil {
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buf.timeout.Stop()
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}
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buf.timeout = time.AfterFunc(keyStoreTimeout, func() {
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k.mutex.Lock()
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defer k.mutex.Unlock()
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if nbuf := k.addrBuffer[addr]; nbuf == buf {
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delete(k.addrBuffer, addr)
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}
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})
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k.mutex.Unlock()
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k.tun.sendKeyLookup(addr.GetKey())
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}
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}
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func (k *keyStore) sendToSubnet(subnet address.Subnet, bs []byte) {
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k.mutex.Lock()
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if info := k.subnetToInfo[subnet]; info != nil {
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k.resetTimeout(info)
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k.mutex.Unlock()
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_, _ = k.tun.core.WriteTo(bs, iwt.Addr(info.key[:]))
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} else {
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var buf *buffer
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if buf = k.subnetBuffer[subnet]; buf == nil {
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buf = new(buffer)
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k.subnetBuffer[subnet] = buf
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}
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msg := append([]byte(nil), bs...)
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buf.packets = append(buf.packets, msg)
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if buf.timeout != nil {
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buf.timeout.Stop()
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}
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buf.timeout = time.AfterFunc(keyStoreTimeout, func() {
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k.mutex.Lock()
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defer k.mutex.Unlock()
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if nbuf := k.subnetBuffer[subnet]; nbuf == buf {
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delete(k.subnetBuffer, subnet)
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}
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})
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k.mutex.Unlock()
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k.tun.sendKeyLookup(subnet.GetKey())
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}
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}
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func (k *keyStore) update(key ed25519.PublicKey) *keyInfo {
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k.mutex.Lock()
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var kArray keyArray
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copy(kArray[:], key)
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var info *keyInfo
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if info = k.keyToInfo[kArray]; info == nil {
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info = new(keyInfo)
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info.key = kArray
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info.address = *address.AddrForKey(ed25519.PublicKey(info.key[:]))
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info.subnet = *address.SubnetForKey(ed25519.PublicKey(info.key[:]))
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k.keyToInfo[info.key] = info
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k.addrToInfo[info.address] = info
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k.subnetToInfo[info.subnet] = info
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k.resetTimeout(info)
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k.mutex.Unlock()
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if buf := k.addrBuffer[info.address]; buf != nil {
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for _, bs := range buf.packets {
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_, _ = k.tun.core.WriteTo(bs, iwt.Addr(info.key[:]))
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}
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delete(k.addrBuffer, info.address)
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}
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if buf := k.subnetBuffer[info.subnet]; buf != nil {
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for _, bs := range buf.packets {
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_, _ = k.tun.core.WriteTo(bs, iwt.Addr(info.key[:]))
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}
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delete(k.subnetBuffer, info.subnet)
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}
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} else {
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k.resetTimeout(info)
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k.mutex.Unlock()
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}
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return info
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}
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func (k *keyStore) resetTimeout(info *keyInfo) {
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if info.timeout != nil {
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info.timeout.Stop()
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}
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info.timeout = time.AfterFunc(keyStoreTimeout, func() {
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k.mutex.Lock()
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defer k.mutex.Unlock()
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if nfo := k.keyToInfo[info.key]; nfo == info {
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delete(k.keyToInfo, info.key)
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}
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if nfo := k.addrToInfo[info.address]; nfo == info {
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delete(k.addrToInfo, info.address)
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}
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if nfo := k.subnetToInfo[info.subnet]; nfo == info {
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delete(k.subnetToInfo, info.subnet)
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}
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})
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}
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@ -1,189 +0,0 @@
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package tuntap
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import (
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"encoding/hex"
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"encoding/json"
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"errors"
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"net"
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"runtime"
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"strings"
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"time"
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iwt "github.com/Arceliar/ironwood/types"
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"github.com/Arceliar/phony"
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//"github.com/yggdrasil-network/yggdrasil-go/src/crypto"
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"github.com/yggdrasil-network/yggdrasil-go/src/address"
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"github.com/yggdrasil-network/yggdrasil-go/src/version"
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)
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// NodeInfoPayload represents a RequestNodeInfo response, in bytes.
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type NodeInfoPayload []byte
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type nodeinfo struct {
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phony.Inbox
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proto *protoHandler
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myNodeInfo NodeInfoPayload
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callbacks map[keyArray]nodeinfoCallback
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}
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type nodeinfoCallback struct {
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call func(nodeinfo NodeInfoPayload)
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created time.Time
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}
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// Initialises the nodeinfo cache/callback maps, and starts a goroutine to keep
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// the cache/callback maps clean of stale entries
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func (m *nodeinfo) init(proto *protoHandler) {
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m.Act(nil, func() {
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m._init(proto)
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})
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}
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func (m *nodeinfo) _init(proto *protoHandler) {
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m.proto = proto
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m.callbacks = make(map[keyArray]nodeinfoCallback)
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m._cleanup()
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}
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func (m *nodeinfo) _cleanup() {
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for boxPubKey, callback := range m.callbacks {
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if time.Since(callback.created) > time.Minute {
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delete(m.callbacks, boxPubKey)
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}
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}
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time.AfterFunc(time.Second*30, func() {
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m.Act(nil, m._cleanup)
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})
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}
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func (m *nodeinfo) _addCallback(sender keyArray, call func(nodeinfo NodeInfoPayload)) {
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m.callbacks[sender] = nodeinfoCallback{
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created: time.Now(),
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call: call,
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}
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}
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// Handles the callback, if there is one
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func (m *nodeinfo) _callback(sender keyArray, nodeinfo NodeInfoPayload) {
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if callback, ok := m.callbacks[sender]; ok {
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callback.call(nodeinfo)
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delete(m.callbacks, sender)
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}
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}
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func (m *nodeinfo) _getNodeInfo() NodeInfoPayload {
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return m.myNodeInfo
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}
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// Set the current node's nodeinfo
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func (m *nodeinfo) setNodeInfo(given interface{}, privacy bool) (err error) {
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phony.Block(m, func() {
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err = m._setNodeInfo(given, privacy)
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})
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return
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}
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func (m *nodeinfo) _setNodeInfo(given interface{}, privacy bool) error {
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defaults := map[string]interface{}{
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"buildname": version.BuildName(),
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"buildversion": version.BuildVersion(),
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"buildplatform": runtime.GOOS,
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"buildarch": runtime.GOARCH,
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}
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newnodeinfo := make(map[string]interface{})
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if !privacy {
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for k, v := range defaults {
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newnodeinfo[k] = v
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}
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}
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if nodeinfomap, ok := given.(map[string]interface{}); ok {
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for key, value := range nodeinfomap {
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if _, ok := defaults[key]; ok {
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if strvalue, strok := value.(string); strok && strings.EqualFold(strvalue, "null") || value == nil {
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delete(newnodeinfo, key)
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}
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continue
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}
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newnodeinfo[key] = value
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}
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}
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newjson, err := json.Marshal(newnodeinfo)
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if err == nil {
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if len(newjson) > 16384 {
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return errors.New("NodeInfo exceeds max length of 16384 bytes")
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}
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m.myNodeInfo = newjson
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return nil
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}
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return err
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}
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func (m *nodeinfo) sendReq(from phony.Actor, key keyArray, callback func(nodeinfo NodeInfoPayload)) {
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m.Act(from, func() {
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m._sendReq(key, callback)
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})
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}
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func (m *nodeinfo) _sendReq(key keyArray, callback func(nodeinfo NodeInfoPayload)) {
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if callback != nil {
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m._addCallback(key, callback)
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}
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_, _ = m.proto.tun.core.WriteTo([]byte{typeSessionProto, typeProtoNodeInfoRequest}, iwt.Addr(key[:]))
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}
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func (m *nodeinfo) handleReq(from phony.Actor, key keyArray) {
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m.Act(from, func() {
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m._sendRes(key)
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})
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}
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func (m *nodeinfo) handleRes(from phony.Actor, key keyArray, info NodeInfoPayload) {
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m.Act(from, func() {
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m._callback(key, info)
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})
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}
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func (m *nodeinfo) _sendRes(key keyArray) {
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bs := append([]byte{typeSessionProto, typeProtoNodeInfoResponse}, m._getNodeInfo()...)
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_, _ = m.proto.tun.core.WriteTo(bs, iwt.Addr(key[:]))
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}
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// Admin socket stuff
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type GetNodeInfoRequest struct {
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Key string `json:"key"`
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}
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type GetNodeInfoResponse map[string]interface{}
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func (m *nodeinfo) nodeInfoAdminHandler(in json.RawMessage) (interface{}, error) {
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var req GetNodeInfoRequest
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if err := json.Unmarshal(in, &req); err != nil {
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return nil, err
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}
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var key keyArray
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var kbs []byte
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var err error
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if kbs, err = hex.DecodeString(req.Key); err != nil {
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return nil, err
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}
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copy(key[:], kbs)
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ch := make(chan []byte, 1)
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m.sendReq(nil, key, func(info NodeInfoPayload) {
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ch <- info
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})
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timer := time.NewTimer(6 * time.Second)
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defer timer.Stop()
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select {
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case <-timer.C:
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return nil, errors.New("timeout")
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case info := <-ch:
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var msg json.RawMessage
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if err := msg.UnmarshalJSON(info); err != nil {
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return nil, err
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}
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ip := net.IP(address.AddrForKey(kbs)[:])
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res := GetNodeInfoResponse{ip.String(): msg}
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return res, nil
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}
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}
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@ -1,349 +0,0 @@
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package tuntap
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import (
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"encoding/hex"
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"encoding/json"
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"errors"
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"fmt"
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"net"
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"time"
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iwt "github.com/Arceliar/ironwood/types"
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"github.com/Arceliar/phony"
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"github.com/yggdrasil-network/yggdrasil-go/src/address"
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)
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const (
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typeDebugDummy = iota
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typeDebugGetSelfRequest
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typeDebugGetSelfResponse
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typeDebugGetPeersRequest
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typeDebugGetPeersResponse
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typeDebugGetDHTRequest
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typeDebugGetDHTResponse
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)
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type reqInfo struct {
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callback func([]byte)
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timer *time.Timer // time.AfterFunc cleanup
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}
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type protoHandler struct {
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phony.Inbox
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tun *TunAdapter
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nodeinfo nodeinfo
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sreqs map[keyArray]*reqInfo
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preqs map[keyArray]*reqInfo
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dreqs map[keyArray]*reqInfo
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}
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func (p *protoHandler) init(tun *TunAdapter) {
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p.tun = tun
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p.nodeinfo.init(p)
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p.sreqs = make(map[keyArray]*reqInfo)
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p.preqs = make(map[keyArray]*reqInfo)
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p.dreqs = make(map[keyArray]*reqInfo)
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}
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func (p *protoHandler) handleProto(from phony.Actor, key keyArray, bs []byte) {
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if len(bs) == 0 {
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return
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}
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switch bs[0] {
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case typeProtoDummy:
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case typeProtoNodeInfoRequest:
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p.nodeinfo.handleReq(p, key)
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case typeProtoNodeInfoResponse:
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p.nodeinfo.handleRes(p, key, bs[1:])
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case typeProtoDebug:
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p._handleDebug(key, bs[1:])
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}
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}
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func (p *protoHandler) _handleDebug(key keyArray, bs []byte) {
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if len(bs) == 0 {
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return
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}
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switch bs[0] {
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case typeDebugDummy:
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case typeDebugGetSelfRequest:
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p._handleGetSelfRequest(key)
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case typeDebugGetSelfResponse:
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p._handleGetSelfResponse(key, bs[1:])
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case typeDebugGetPeersRequest:
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p._handleGetPeersRequest(key)
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case typeDebugGetPeersResponse:
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p._handleGetPeersResponse(key, bs[1:])
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case typeDebugGetDHTRequest:
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p._handleGetDHTRequest(key)
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case typeDebugGetDHTResponse:
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p._handleGetDHTResponse(key, bs[1:])
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}
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}
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func (p *protoHandler) sendGetSelfRequest(key keyArray, callback func([]byte)) {
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p.Act(nil, func() {
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if info := p.sreqs[key]; info != nil {
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info.timer.Stop()
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delete(p.sreqs, key)
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}
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info := new(reqInfo)
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info.callback = callback
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info.timer = time.AfterFunc(time.Minute, func() {
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p.Act(nil, func() {
|
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if p.sreqs[key] == info {
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delete(p.sreqs, key)
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}
|
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})
|
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})
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p.sreqs[key] = info
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p._sendDebug(key, typeDebugGetSelfRequest, nil)
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})
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}
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|
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func (p *protoHandler) _handleGetSelfRequest(key keyArray) {
|
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self := p.tun.core.GetSelf()
|
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res := map[string]string{
|
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"key": hex.EncodeToString(self.Key[:]),
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"coords": fmt.Sprintf("%v", self.Coords),
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}
|
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bs, err := json.Marshal(res) // FIXME this puts keys in base64, not hex
|
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if err != nil {
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return
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}
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p._sendDebug(key, typeDebugGetSelfResponse, bs)
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}
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|
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func (p *protoHandler) _handleGetSelfResponse(key keyArray, bs []byte) {
|
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if info := p.sreqs[key]; info != nil {
|
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info.timer.Stop()
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info.callback(bs)
|
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delete(p.sreqs, key)
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}
|
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}
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|
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func (p *protoHandler) sendGetPeersRequest(key keyArray, callback func([]byte)) {
|
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p.Act(nil, func() {
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if info := p.preqs[key]; info != nil {
|
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info.timer.Stop()
|
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delete(p.preqs, key)
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}
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info := new(reqInfo)
|
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info.callback = callback
|
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info.timer = time.AfterFunc(time.Minute, func() {
|
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p.Act(nil, func() {
|
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if p.preqs[key] == info {
|
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delete(p.preqs, key)
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}
|
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})
|
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})
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p.preqs[key] = info
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p._sendDebug(key, typeDebugGetPeersRequest, nil)
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})
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}
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|
||||
func (p *protoHandler) _handleGetPeersRequest(key keyArray) {
|
||||
peers := p.tun.core.GetPeers()
|
||||
var bs []byte
|
||||
for _, pinfo := range peers {
|
||||
tmp := append(bs, pinfo.Key[:]...)
|
||||
const responseOverhead = 2 // 1 debug type, 1 getpeers type
|
||||
if uint64(len(tmp))+responseOverhead > p.tun.maxSessionMTU() {
|
||||
break
|
||||
}
|
||||
bs = tmp
|
||||
}
|
||||
p._sendDebug(key, typeDebugGetPeersResponse, bs)
|
||||
}
|
||||
|
||||
func (p *protoHandler) _handleGetPeersResponse(key keyArray, bs []byte) {
|
||||
if info := p.preqs[key]; info != nil {
|
||||
info.timer.Stop()
|
||||
info.callback(bs)
|
||||
delete(p.preqs, key)
|
||||
}
|
||||
}
|
||||
|
||||
func (p *protoHandler) sendGetDHTRequest(key keyArray, callback func([]byte)) {
|
||||
p.Act(nil, func() {
|
||||
if info := p.dreqs[key]; info != nil {
|
||||
info.timer.Stop()
|
||||
delete(p.dreqs, key)
|
||||
}
|
||||
info := new(reqInfo)
|
||||
info.callback = callback
|
||||
info.timer = time.AfterFunc(time.Minute, func() {
|
||||
p.Act(nil, func() {
|
||||
if p.dreqs[key] == info {
|
||||
delete(p.dreqs, key)
|
||||
}
|
||||
})
|
||||
})
|
||||
p.dreqs[key] = info
|
||||
p._sendDebug(key, typeDebugGetDHTRequest, nil)
|
||||
})
|
||||
}
|
||||
|
||||
func (p *protoHandler) _handleGetDHTRequest(key keyArray) {
|
||||
dinfos := p.tun.core.GetDHT()
|
||||
var bs []byte
|
||||
for _, dinfo := range dinfos {
|
||||
tmp := append(bs, dinfo.Key[:]...)
|
||||
const responseOverhead = 2 // 1 debug type, 1 getdht type
|
||||
if uint64(len(tmp))+responseOverhead > p.tun.maxSessionMTU() {
|
||||
break
|
||||
}
|
||||
bs = tmp
|
||||
}
|
||||
p._sendDebug(key, typeDebugGetDHTResponse, bs)
|
||||
}
|
||||
|
||||
func (p *protoHandler) _handleGetDHTResponse(key keyArray, bs []byte) {
|
||||
if info := p.dreqs[key]; info != nil {
|
||||
info.timer.Stop()
|
||||
info.callback(bs)
|
||||
delete(p.dreqs, key)
|
||||
}
|
||||
}
|
||||
|
||||
func (p *protoHandler) _sendDebug(key keyArray, dType uint8, data []byte) {
|
||||
bs := append([]byte{typeSessionProto, typeProtoDebug, dType}, data...)
|
||||
_, _ = p.tun.core.WriteTo(bs, iwt.Addr(key[:]))
|
||||
}
|
||||
|
||||
// Admin socket stuff
|
||||
|
||||
type DebugGetSelfRequest struct {
|
||||
Key string `json:"key"`
|
||||
}
|
||||
|
||||
type DebugGetSelfResponse map[string]interface{}
|
||||
|
||||
func (p *protoHandler) getSelfHandler(in json.RawMessage) (interface{}, error) {
|
||||
var req DebugGetSelfRequest
|
||||
if err := json.Unmarshal(in, &req); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
var key keyArray
|
||||
var kbs []byte
|
||||
var err error
|
||||
if kbs, err = hex.DecodeString(req.Key); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
copy(key[:], kbs)
|
||||
ch := make(chan []byte, 1)
|
||||
p.sendGetSelfRequest(key, func(info []byte) {
|
||||
ch <- info
|
||||
})
|
||||
timer := time.NewTimer(6 * time.Second)
|
||||
defer timer.Stop()
|
||||
select {
|
||||
case <-timer.C:
|
||||
return nil, errors.New("timeout")
|
||||
case info := <-ch:
|
||||
var msg json.RawMessage
|
||||
if err := msg.UnmarshalJSON(info); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
ip := net.IP(address.AddrForKey(kbs)[:])
|
||||
res := DebugGetSelfResponse{ip.String(): msg}
|
||||
return res, nil
|
||||
}
|
||||
}
|
||||
|
||||
type DebugGetPeersRequest struct {
|
||||
Key string `json:"key"`
|
||||
}
|
||||
|
||||
type DebugGetPeersResponse map[string]interface{}
|
||||
|
||||
func (p *protoHandler) getPeersHandler(in json.RawMessage) (interface{}, error) {
|
||||
var req DebugGetPeersRequest
|
||||
if err := json.Unmarshal(in, &req); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
var key keyArray
|
||||
var kbs []byte
|
||||
var err error
|
||||
if kbs, err = hex.DecodeString(req.Key); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
copy(key[:], kbs)
|
||||
ch := make(chan []byte, 1)
|
||||
p.sendGetPeersRequest(key, func(info []byte) {
|
||||
ch <- info
|
||||
})
|
||||
timer := time.NewTimer(6 * time.Second)
|
||||
defer timer.Stop()
|
||||
select {
|
||||
case <-timer.C:
|
||||
return nil, errors.New("timeout")
|
||||
case info := <-ch:
|
||||
ks := make(map[string][]string)
|
||||
bs := info
|
||||
for len(bs) >= len(key) {
|
||||
ks["keys"] = append(ks["keys"], hex.EncodeToString(bs[:len(key)]))
|
||||
bs = bs[len(key):]
|
||||
}
|
||||
js, err := json.Marshal(ks)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
var msg json.RawMessage
|
||||
if err := msg.UnmarshalJSON(js); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
ip := net.IP(address.AddrForKey(kbs)[:])
|
||||
res := DebugGetPeersResponse{ip.String(): msg}
|
||||
return res, nil
|
||||
}
|
||||
}
|
||||
|
||||
type DebugGetDHTRequest struct {
|
||||
Key string `json:"key"`
|
||||
}
|
||||
|
||||
type DebugGetDHTResponse map[string]interface{}
|
||||
|
||||
func (p *protoHandler) getDHTHandler(in json.RawMessage) (interface{}, error) {
|
||||
var req DebugGetDHTRequest
|
||||
if err := json.Unmarshal(in, &req); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
var key keyArray
|
||||
var kbs []byte
|
||||
var err error
|
||||
if kbs, err = hex.DecodeString(req.Key); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
copy(key[:], kbs)
|
||||
ch := make(chan []byte, 1)
|
||||
p.sendGetDHTRequest(key, func(info []byte) {
|
||||
ch <- info
|
||||
})
|
||||
timer := time.NewTimer(6 * time.Second)
|
||||
defer timer.Stop()
|
||||
select {
|
||||
case <-timer.C:
|
||||
return nil, errors.New("timeout")
|
||||
case info := <-ch:
|
||||
ks := make(map[string][]string)
|
||||
bs := info
|
||||
for len(bs) >= len(key) {
|
||||
ks["keys"] = append(ks["keys"], hex.EncodeToString(bs[:len(key)]))
|
||||
bs = bs[len(key):]
|
||||
}
|
||||
js, err := json.Marshal(ks)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
var msg json.RawMessage
|
||||
if err := msg.UnmarshalJSON(js); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
ip := net.IP(address.AddrForKey(kbs)[:])
|
||||
res := DebugGetDHTResponse{ip.String(): msg}
|
||||
return res, nil
|
||||
}
|
||||
}
|
||||
|
|
@ -189,41 +189,3 @@ func (tun *TunAdapter) _stop() error {
|
|||
return nil
|
||||
}
|
||||
|
||||
func (tun *TunAdapter) oobHandler(fromKey, toKey ed25519.PublicKey, data []byte) {
|
||||
if len(data) != 1+ed25519.SignatureSize {
|
||||
return
|
||||
}
|
||||
sig := data[1:]
|
||||
switch data[0] {
|
||||
case typeKeyLookup:
|
||||
snet := *address.SubnetForKey(toKey)
|
||||
if snet == tun.subnet && ed25519.Verify(fromKey, toKey[:], sig) {
|
||||
// This is looking for at least our subnet (possibly our address)
|
||||
// Send a response
|
||||
tun.sendKeyResponse(fromKey)
|
||||
}
|
||||
case typeKeyResponse:
|
||||
// TODO keep a list of something to match against...
|
||||
// Ignore the response if it doesn't match anything of interest...
|
||||
if ed25519.Verify(fromKey, toKey[:], sig) {
|
||||
tun.store.update(fromKey)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (tun *TunAdapter) sendKeyLookup(partial ed25519.PublicKey) {
|
||||
sig := ed25519.Sign(tun.core.PrivateKey(), partial[:])
|
||||
bs := append([]byte{typeKeyLookup}, sig...)
|
||||
_ = tun.core.SendOutOfBand(partial, bs)
|
||||
}
|
||||
|
||||
func (tun *TunAdapter) sendKeyResponse(dest ed25519.PublicKey) {
|
||||
sig := ed25519.Sign(tun.core.PrivateKey(), dest[:])
|
||||
bs := append([]byte{typeKeyResponse}, sig...)
|
||||
_ = tun.core.SendOutOfBand(dest, bs)
|
||||
}
|
||||
|
||||
func (tun *TunAdapter) maxSessionMTU() uint64 {
|
||||
const sessionTypeOverhead = 1
|
||||
return tun.core.MTU() - sessionTypeOverhead
|
||||
}
|
||||
|
|
|
|||
|
|
@ -1,23 +0,0 @@
|
|||
package tuntap
|
||||
|
||||
// Out-of-band packet types
|
||||
const (
|
||||
typeKeyDummy = iota // nolint:deadcode,varcheck
|
||||
typeKeyLookup
|
||||
typeKeyResponse
|
||||
)
|
||||
|
||||
// In-band packet types
|
||||
const (
|
||||
typeSessionDummy = iota // nolint:deadcode,varcheck
|
||||
typeSessionTraffic
|
||||
typeSessionProto
|
||||
)
|
||||
|
||||
// Protocol packet types
|
||||
const (
|
||||
typeProtoDummy = iota
|
||||
typeProtoNodeInfoRequest
|
||||
typeProtoNodeInfoResponse
|
||||
typeProtoDebug = 255
|
||||
)
|
||||
Loading…
Add table
Add a link
Reference in a new issue