mirror of
https://github.com/cwinfo/yggdrasil-go.git
synced 2024-11-10 06:20:26 +00:00
only create one interface, but still opens duplicate connections before it catches this, so more work is needed
This commit is contained in:
parent
f95663e923
commit
12c0e019dc
@ -8,13 +8,21 @@ import (
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"time"
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"time"
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"github.com/yggdrasil-network/yggdrasil-go/src/crypto"
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"github.com/yggdrasil-network/yggdrasil-go/src/crypto"
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//"github.com/yggdrasil-network/yggdrasil-go/src/util"
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"github.com/yggdrasil-network/yggdrasil-go/src/util"
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)
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)
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type link struct {
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type link struct {
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core *Core
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core *Core
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mutex sync.RWMutex // protects interfaces below
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mutex sync.RWMutex // protects interfaces below
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interfaces map[string]*linkInterface
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interfaces map[linkInfo]*linkInterface
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}
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type linkInfo struct {
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box crypto.BoxPubKey // Their encryption key
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sig crypto.SigPubKey // Their signing key
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linkType string // Type of link, e.g. TCP, AWDL
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local string // Local name or address
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remote string // Remote name or address
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}
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}
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type linkInterfaceMsgIO interface {
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type linkInterfaceMsgIO interface {
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@ -27,16 +35,18 @@ type linkInterfaceMsgIO interface {
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}
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}
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type linkInterface struct {
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type linkInterface struct {
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name string
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name string
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link *link
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link *link
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peer *peer
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peer *peer
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msgIO linkInterfaceMsgIO
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msgIO linkInterfaceMsgIO
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info linkInfo
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closed chan struct{}
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}
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}
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func (l *link) init(c *Core) error {
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func (l *link) init(c *Core) error {
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l.core = c
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l.core = c
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l.mutex.Lock()
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l.mutex.Lock()
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l.interfaces = make(map[string]*linkInterface)
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l.interfaces = make(map[linkInfo]*linkInterface)
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l.mutex.Unlock()
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l.mutex.Unlock()
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if err := l.core.awdl.init(c); err != nil {
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if err := l.core.awdl.init(c); err != nil {
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@ -47,18 +57,19 @@ func (l *link) init(c *Core) error {
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return nil
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return nil
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}
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}
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func (l *link) create(msgIO linkInterfaceMsgIO, name string) (*linkInterface, error) {
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func (l *link) create(msgIO linkInterfaceMsgIO, name, linkType, local, remote string) (*linkInterface, error) {
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l.mutex.Lock()
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// Technically anything unique would work for names, but lets pick something human readable, just for debugging
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defer l.mutex.Unlock()
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if _, ok := l.interfaces[name]; ok {
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return nil, errors.New("Interface with this name already exists")
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}
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intf := linkInterface{
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intf := linkInterface{
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name: name,
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name: name,
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link: l,
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link: l,
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msgIO: msgIO,
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msgIO: msgIO,
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info: linkInfo{
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linkType: linkType,
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local: local,
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remote: remote,
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},
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}
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}
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l.interfaces[intf.name] = &intf
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//l.interfaces[intf.name] = &intf
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//go intf.start()
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//go intf.start()
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return &intf, nil
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return &intf, nil
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}
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}
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@ -89,7 +100,25 @@ func (intf *linkInterface) handler() error {
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intf.link.core.log.Println("Failed to connect to node: " + intf.name + " version: " + fmt.Sprintf("%d.%d", meta.ver, meta.minorVer))
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intf.link.core.log.Println("Failed to connect to node: " + intf.name + " version: " + fmt.Sprintf("%d.%d", meta.ver, meta.minorVer))
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return errors.New("failed to connect: wrong version")
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return errors.New("failed to connect: wrong version")
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}
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}
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// FIXME we *must* stop here and check that we don't already have a connection to this peer. Need to figure out a sane way how to do that. Otherwise you'll have things like duplicate connections (one in each direction) for auto-discovered peers.
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// Check if we already have a link to this node
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intf.info.box = meta.box
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intf.info.sig = meta.sig
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intf.link.mutex.Lock()
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if oldIntf, isIn := intf.link.interfaces[intf.info]; isIn {
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intf.link.mutex.Unlock()
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// FIXME we should really return an error and let the caller block instead
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// That lets them do things like close connections before blocking
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intf.link.core.log.Println("DEBUG: found existing interface for", intf.name)
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<-oldIntf.closed
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return nil
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} else {
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intf.closed = make(chan struct{})
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intf.link.interfaces[intf.info] = intf
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defer close(intf.closed)
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intf.link.core.log.Println("DEBUG: registered interface for", intf.name)
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}
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intf.link.mutex.Unlock()
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// Create peer
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shared := crypto.GetSharedKey(myLinkPriv, &meta.link)
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shared := crypto.GetSharedKey(myLinkPriv, &meta.link)
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intf.peer = intf.link.core.peers.newPeer(&meta.box, &meta.sig, shared, intf.name)
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intf.peer = intf.link.core.peers.newPeer(&meta.box, &meta.sig, shared, intf.name)
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if intf.peer == nil {
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if intf.peer == nil {
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@ -111,7 +140,6 @@ func (intf *linkInterface) handler() error {
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go intf.peer.linkLoop()
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go intf.peer.linkLoop()
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// Start the writer
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// Start the writer
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go func() {
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go func() {
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// TODO util.PutBytes etc.
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interval := 4 * time.Second
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interval := 4 * time.Second
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timer := time.NewTimer(interval)
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timer := time.NewTimer(interval)
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clearTimer := func() {
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clearTimer := func() {
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@ -142,6 +170,7 @@ func (intf *linkInterface) handler() error {
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return
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return
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}
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}
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intf.msgIO.writeMsg(msg)
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intf.msgIO.writeMsg(msg)
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util.PutBytes(msg)
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if true {
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if true {
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// TODO *don't* do this if we're not reading any traffic
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// TODO *don't* do this if we're not reading any traffic
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// In such a case, the reader is responsible for resetting it the next time we read something
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// In such a case, the reader is responsible for resetting it the next time we read something
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@ -285,15 +285,17 @@ func (iface *tcpInterface) handler(sock net.Conn, incoming bool) {
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iface.setExtraOptions(sock)
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iface.setExtraOptions(sock)
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stream := stream{}
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stream := stream{}
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stream.init(sock, nil)
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stream.init(sock, nil)
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name := sock.LocalAddr().String() + sock.RemoteAddr().String()
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local, _, _ := net.SplitHostPort(sock.LocalAddr().String())
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link, err := iface.core.link.create(&stream, name)
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remote, _, _ := net.SplitHostPort(sock.RemoteAddr().String())
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name := "tcp://" + sock.RemoteAddr().String()
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link, err := iface.core.link.create(&stream, name, "tcp", local, remote)
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if err != nil {
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if err != nil {
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iface.core.log.Println(err)
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iface.core.log.Println(err)
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panic(err)
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panic(err)
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}
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}
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iface.core.log.Println("DEBUG: starting handler")
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iface.core.log.Println("DEBUG: starting handler for", name)
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link.handler()
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link.handler()
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iface.core.log.Println("DEBUG: stopped handler")
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iface.core.log.Println("DEBUG: stopped handler for", name)
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}
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}
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// This exchanges/checks connection metadata, sets up the peer struct, sets up the writer goroutine, and then runs the reader within the current goroutine.
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// This exchanges/checks connection metadata, sets up the peer struct, sets up the writer goroutine, and then runs the reader within the current goroutine.
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