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Client lport disconn/reconn works, somewhat..

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This commit is contained in:
Russ Magee 2018-11-11 11:45:37 -08:00
parent 3b35751e2e
commit b94f25e5ae
2 changed files with 3 additions and 9 deletions
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8
hkexnet/hkexnet.go
View file

@ -816,7 +816,6 @@ func (hc Conn) Read(b []byte) (n int, err error) {
// server side tunnel setup in response to client
lport := binary.BigEndian.Uint16(payloadBytes[0:2])
rport := binary.BigEndian.Uint16(payloadBytes[2:4])
logger.LogDebug(fmt.Sprintf("mapkey is %d", rport))
if _, ok := (*hc.tuns)[rport]; !ok {
// tunnel first-time open
logger.LogDebug(fmt.Sprintf("[Server] Got Initial CSOTunSetup [%d:%d]", lport, rport))
@ -828,7 +827,6 @@ func (hc Conn) Read(b []byte) (n int, err error) {
} else if ctrlStatOp == CSOTunSetupAck {
lport := binary.BigEndian.Uint16(payloadBytes[0:2])
rport := binary.BigEndian.Uint16(payloadBytes[2:4])
logger.LogDebug(fmt.Sprintf("mapkey is %d\n", rport))
if _, ok := (*hc.tuns)[rport]; !ok {
// tunnel first-time open
logger.LogDebug(fmt.Sprintf("[Client] Got Initial CSOTunSetupAck [%d:%d]", lport, rport))
@ -843,27 +841,23 @@ func (hc Conn) Read(b []byte) (n int, err error) {
// for client-side on lport.
lport := binary.BigEndian.Uint16(payloadBytes[0:2])
rport := binary.BigEndian.Uint16(payloadBytes[2:4])
logger.LogDebug(fmt.Sprintf("mapkey is %d\n", rport))
logger.LogDebug(fmt.Sprintf("[Client] Got CSOTunRefused [%d:%d]", lport, rport))
(*hc.tuns)[rport].Ctl <- 'r' // client should NOT Listen()
//(*hc.tuns)[rport].Ctl <- 'r' // client should NOT Listen()
} else if ctrlStatOp == CSOTunDisconn {
// server side's rport has disconnected (server lost)
lport := binary.BigEndian.Uint16(payloadBytes[0:2])
rport := binary.BigEndian.Uint16(payloadBytes[2:4])
logger.LogDebug(fmt.Sprintf("mapkey is %d\n", rport))
logger.LogDebug(fmt.Sprintf("[Client] Got CSOTunDisconn [%d:%d]", lport, rport))
(*hc.tuns)[rport].Ctl <- 'x' // client should hangup on current lport conn
} else if ctrlStatOp == CSOTunHangup {
// client side's lport has hung up
lport := binary.BigEndian.Uint16(payloadBytes[0:2])
rport := binary.BigEndian.Uint16(payloadBytes[2:4])
logger.LogDebug(fmt.Sprintf("mapkey is %d\n", rport))
logger.LogDebug(fmt.Sprintf("[Server] Got CSOTunHangup [%d:%d]", lport, rport))
(*hc.tuns)[rport].Ctl <- 'h' // server should hang up on currently-dialled rport
} else if ctrlStatOp == CSOTunData {
lport := binary.BigEndian.Uint16(payloadBytes[0:2])
rport := binary.BigEndian.Uint16(payloadBytes[2:4])
logger.LogDebug(fmt.Sprintf("mapkey is %d\n", rport))
//fmt.Printf("[Got CSOTunData: [lport %d:rport %d] data:%v\n", lport, rport, payloadBytes[4:])
if _, ok := (*hc.tuns)[rport]; ok {
logger.LogDebug(fmt.Sprintf("[Writing data to rport [%d:%d]", lport, rport))

4
hkexnet/hkextun.go
View file

@ -173,6 +173,7 @@ func (hc *Conn) StartServerTunnel(lport, rport uint16) {
weAreDialled := false
for cmd := range t.Ctl {
var c net.Conn
logger.LogDebug(fmt.Sprintf("[ServerTun] got Ctl '%c'. weAreDialled: %v", cmd, weAreDialled))
if cmd == 'd' && !weAreDialled {
logger.LogDebug("[ServerTun] dialling...")
c, err = net.Dial("tcp", fmt.Sprintf(":%d", rport))
@ -253,8 +254,7 @@ func (hc *Conn) StartServerTunnel(lport, rport uint16) {
}
} else if cmd == 'h' {
// client side has hung up
logger.LogDebug(fmt.Sprintf("[ServerTun] Client hung up: hanging up on rport %v", t))
weAreDialled = false
logger.LogDebug(fmt.Sprintf("[ServerTun] Client hung up on rport %v", t))
}
} // t.Ctl read loop
logger.LogDebug("[ServerTun] Tunnel exiting t.Ctl read loop - channel closed??")