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use local port in listener config, when set

This commit is contained in:
Megan Marsh 2020-05-08 10:20:47 -07:00
parent 81e043f2b0
commit dde162622d
1 changed files with 24 additions and 16 deletions
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14
builder/googlecompute/step_start_tunnel.go
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@ -138,11 +138,19 @@ type StepStartTunnel struct {
} }
func (s *StepStartTunnel) ConfigureLocalHostPort(ctx context.Context) error { func (s *StepStartTunnel) ConfigureLocalHostPort(ctx context.Context) error {
minPortNumber, maxPortNumber := 8000, 9000
if s.IAPConf.IAPLocalhostPort == 0 { if s.IAPConf.IAPLocalhostPort == 0 {
minPortNumber = s.IAPConf.IAPLocalhostPort
maxPortNumber = minPortNumber
log.Printf("Using TCP port for %d IAP proxy", s.IAPConf.IAPLocalhostPort)
} else {
log.Printf("Finding an available TCP port for IAP proxy") log.Printf("Finding an available TCP port for IAP proxy")
}
l, err := net.ListenRangeConfig{ l, err := net.ListenRangeConfig{
Min: 8000, Min: minPortNumber,
Max: 9000, Max: maxPortNumber,
Addr: "0.0.0.0", Addr: "0.0.0.0",
Network: "tcp", Network: "tcp",
}.Listen(ctx) }.Listen(ctx)
@ -156,7 +164,7 @@ func (s *StepStartTunnel) ConfigureLocalHostPort(ctx context.Context) error {
l.Close() l.Close()
log.Printf("Setting up proxy to listen on localhost at %d", log.Printf("Setting up proxy to listen on localhost at %d",
s.IAPConf.IAPLocalhostPort) s.IAPConf.IAPLocalhostPort)
}
return nil return nil
} }