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package memlistener
import "net"
import "errors"
import "sync/atomic"
type MemoryListener struct {
connections chan net.Conn
state chan int
isStateClosed uint32
}
func NewMemoryListener() *MemoryListener {
ml := &MemoryListener{}
ml.connections = make(chan net.Conn)
ml.state = make(chan int)
return ml
}
func (ml *MemoryListener) Accept() (net.Conn, error) {
select {
case newConnection := <-ml.connections:
return newConnection, nil
case <-ml.state:
return nil, errors.New("Listener closed")
}
}
func (ml *MemoryListener) Close() error {
if atomic.CompareAndSwapUint32(&ml.isStateClosed, 0, 1) {
close(ml.state)
}
return nil
}
func (ml *MemoryListener) Dial(network, addr string) (net.Conn, error) {
select {
case <-ml.state:
return nil, errors.New("Listener closed")
default:
}
//Create an in memory transport
serverSide, clientSide := net.Pipe()
//Pass half to the server
ml.connections <- serverSide
//Return the other half to the client
return clientSide, nil
}
type memoryAddr int
func (memoryAddr) Network() string {
return "memory"
}
func (memoryAddr) String() string {
return "local"
}
func (ml *MemoryListener) Addr() net.Addr {
return memoryAddr(0)
}
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