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https://github.com/cwinfo/yggdrasil-go.git
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Experiment with new API
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@ -13,6 +13,7 @@ It also defines NodeID and TreeID as hashes of keys, and wraps hash functions
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import (
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"crypto/rand"
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"crypto/sha512"
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"encoding/hex"
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"golang.org/x/crypto/ed25519"
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"golang.org/x/crypto/nacl/box"
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@ -32,6 +33,14 @@ type NodeID [NodeIDLen]byte
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type TreeID [TreeIDLen]byte
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type Handle [handleLen]byte
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func (n *NodeID) String() string {
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return hex.EncodeToString(n[:])
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}
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func (n *NodeID) Network() string {
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return "nodeid"
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}
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func GetNodeID(pub *BoxPubKey) *NodeID {
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h := sha512.Sum512(pub[:])
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return (*NodeID)(&h)
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113
src/yggdrasil/api.go
Normal file
113
src/yggdrasil/api.go
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@ -0,0 +1,113 @@
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package yggdrasil
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import (
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"encoding/hex"
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"errors"
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"time"
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"github.com/yggdrasil-network/yggdrasil-go/src/crypto"
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)
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func (c *Core) Dial(network, address string) (Conn, error) {
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var nodeID *crypto.NodeID
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var nodeMask *crypto.NodeID
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// Process
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switch network {
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case "nodeid":
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// A node ID was provided - we don't need to do anything special with it
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dest, err := hex.DecodeString(address)
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if err != nil {
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return Conn{}, err
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}
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copy(nodeID[:], dest)
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var m crypto.NodeID
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for i := range dest {
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m[i] = 0xFF
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}
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copy(nodeMask[:], m[:])
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default:
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// An unexpected address type was given, so give up
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return Conn{}, errors.New("unexpected address type")
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}
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// Try and search for the node on the network
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doSearch := func() {
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sinfo, isIn := c.searches.searches[*nodeID]
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if !isIn {
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sinfo = c.searches.newIterSearch(nodeID, nodeMask)
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}
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c.searches.continueSearch(sinfo)
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}
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var sinfo *sessionInfo
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var isIn bool
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switch {
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case !isIn || !sinfo.init:
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// No or unintiialized session, so we need to search first
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doSearch()
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case time.Since(sinfo.time) > 6*time.Second:
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if sinfo.time.Before(sinfo.pingTime) && time.Since(sinfo.pingTime) > 6*time.Second {
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// We haven't heard from the dest in a while
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// We tried pinging but didn't get a response
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// They may have changed coords
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// Try searching to discover new coords
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// Note that search spam is throttled internally
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doSearch()
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} else {
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// We haven't heard about the dest in a while
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now := time.Now()
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if !sinfo.time.Before(sinfo.pingTime) {
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// Update pingTime to start the clock for searches (above)
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sinfo.pingTime = now
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}
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if time.Since(sinfo.pingSend) > time.Second {
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// Send at most 1 ping per second
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sinfo.pingSend = now
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c.sessions.sendPingPong(sinfo, false)
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}
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}
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}
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return Conn{
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session: sinfo,
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}, nil
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}
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type Conn struct {
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session *sessionInfo
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readDeadline time.Time
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writeDeadline time.Time
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}
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func (c *Conn) Read(b []byte) (int, error) {
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return 0, nil
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}
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func (c *Conn) Write(b []byte) (int, error) {
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return 0, nil
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}
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func (c *Conn) Close() error {
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return nil
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}
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func (c *Conn) LocalAddr() crypto.NodeID {
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return *crypto.GetNodeID(&c.session.core.boxPub)
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}
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func (c *Conn) RemoteAddr() crypto.NodeID {
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return *crypto.GetNodeID(&c.session.theirPermPub)
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}
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func (c *Conn) SetDeadline(t time.Time) error {
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c.SetReadDeadline(t)
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c.SetWriteDeadline(t)
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return nil
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}
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func (c *Conn) SetReadDeadline(t time.Time) error {
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c.readDeadline = t
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return nil
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}
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func (c *Conn) SetWriteDeadline(t time.Time) error {
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c.writeDeadline = t
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return nil
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}
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