func (d *tcpDialer) reuseDial(raddr ma.Multiaddr) (manet.Conn, error) {
logdial := lgbl.Dial("conn", "", "", d.laddr, raddr)
rpev := log.EventBegin(context.TODO(), "tptDialReusePort", logdial)
network, netraddr, err := manet.DialArgs(raddr)
if err != nil {
return nil, err
}
con, err := d.rd.Dial(network, netraddr)
if err == nil {
logdial["reuseport"] = "success"
rpev.Done()
return manet.WrapNetConn(con)
}
if !ReuseErrShouldRetry(err) {
logdial["reuseport"] = "failure"
logdial["error"] = err
rpev.Done()
return nil, err
}
logdial["reuseport"] = "retry"
logdial["error"] = err
rpev.Done()
return d.madialer.Dial(raddr)
}
func logProtocolMismatchDisconnect(c inet.Conn, protocol, agent string) {
lm := make(lgbl.DeferredMap)
lm["remotePeer"] = func() interface{} { return c.RemotePeer().Pretty() }
lm["remoteAddr"] = func() interface{} { return c.RemoteMultiaddr().String() }
lm["protocolVersion"] = protocol
lm["agentVersion"] = agent
log.Event(context.TODO(), "IdentifyProtocolMismatch", lm)
log.Debug("IdentifyProtocolMismatch %s %s %s (disconnected)", c.RemotePeer(), protocol, agent)
}
func (ids *IDService) IdentifyConn(c inet.Conn) {
ids.currmu.Lock()
if wait, found := ids.currid[c]; found {
ids.currmu.Unlock()
log.Debugf("IdentifyConn called twice on: %s", c)
<-wait // already identifying it. wait for it.
return
}
ids.currid[c] = make(chan struct{})
ids.currmu.Unlock()
s, err := c.NewStream()
if err != nil {
log.Debugf("error opening initial stream for %s", ID)
log.Event(context.TODO(), "IdentifyOpenFailed", c.RemotePeer())
c.Close()
return
} else {
bwc := ids.Host.GetBandwidthReporter()
s = mstream.WrapStream(s, ID, bwc)
// ok give the response to our handler.
if err := msmux.SelectProtoOrFail(ID, s); err != nil {
log.Debugf("error writing stream header for %s", ID)
log.Event(context.TODO(), "IdentifyOpenFailed", c.RemotePeer())
s.Close()
return
} else {
ids.ResponseHandler(s)
}
}
ids.currmu.Lock()
ch, found := ids.currid[c]
delete(ids.currid, c)
ids.currmu.Unlock()
if !found {
log.Debugf("IdentifyConn failed to find channel (programmer error) for %s", c)
return
}
close(ch) // release everyone waiting.
}
func addPortMapping(nmgr *natManager, intaddr ma.Multiaddr) {
nat := nmgr.NAT()
if nat == nil {
panic("natManager addPortMapping called without a nat.")
}
// first, check if the port mapping already exists.
for _, mapping := range nat.Mappings() {
if mapping.InternalAddr().Equal(intaddr) {
return // it exists! return.
}
}
ctx := context.TODO()
lm := make(lgbl.DeferredMap)
lm["internalAddr"] = func() interface{} { return intaddr.String() }
defer log.EventBegin(ctx, "natMgrAddPortMappingWait", lm).Done()
select {
case <-nmgr.proc.Closing():
lm["outcome"] = "cancelled"
return // no use.
case <-nmgr.ready: // wait until it's ready.
}
// actually start the port map (sub-event because waiting may take a while)
defer log.EventBegin(ctx, "natMgrAddPortMapping", lm).Done()
// get the nat
m, err := nat.NewMapping(intaddr)
if err != nil {
lm["outcome"] = "failure"
lm["error"] = err
return
}
extaddr, err := m.ExternalAddr()
if err != nil {
lm["outcome"] = "failure"
lm["error"] = err
return
}
lm["outcome"] = "success"
lm["externalAddr"] = func() interface{} { return extaddr.String() }
log.Infof("established nat port mapping: %s <--> %s", intaddr, extaddr)
}
// ResolveUnspecifiedAddresses expands unspecified ip addresses (/ip4/0.0.0.0, /ip6/::) to
// use the known local interfaces.
func ResolveUnspecifiedAddresses(unspecAddrs, ifaceAddrs []ma.Multiaddr) ([]ma.Multiaddr, error) {
// todo optimize: only fetch these if we have a "any" addr.
if len(ifaceAddrs) < 1 {
var err error
ifaceAddrs, err = InterfaceAddresses()
if err != nil {
return nil, err
}
// log.Debug("InterfaceAddresses:", ifaceAddrs)
}
var outputAddrs []ma.Multiaddr
for _, a := range unspecAddrs {
// unspecified?
resolved, err := ResolveUnspecifiedAddress(a, ifaceAddrs)
if err != nil {
continue // optimistic. if we cant resolve anything, we'll know at the bottom.
}
// log.Debug("resolved:", a, resolved)
outputAddrs = append(outputAddrs, resolved...)
}
if len(outputAddrs) < 1 {
return nil, fmt.Errorf("failed to specify addrs: %s", unspecAddrs)
}
log.Event(context.TODO(), "interfaceListenAddresses", func() logging.Loggable {
var addrs []string
for _, addr := range outputAddrs {
addrs = append(addrs, addr.String())
}
return logging.Metadata{"addresses": addrs}
}())
log.Debug("ResolveUnspecifiedAddresses:", unspecAddrs, ifaceAddrs, outputAddrs)
return outputAddrs, nil
}
