inet.af/netstack@v0.0.0-20220214151720-7585b01ddccf/tcpip/transport/datagram.go (about)

     1  // Copyright 2021 The gVisor Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package transport
    16  
    17  import (
    18  	"fmt"
    19  
    20  	"inet.af/netstack/tcpip"
    21  )
    22  
    23  // DatagramEndpointState is the state of a datagram-based endpoint.
    24  type DatagramEndpointState tcpip.EndpointState
    25  
    26  // The states a datagram-based endpoint may be in.
    27  const (
    28  	_ DatagramEndpointState = iota
    29  	DatagramEndpointStateInitial
    30  	DatagramEndpointStateBound
    31  	DatagramEndpointStateConnected
    32  	DatagramEndpointStateClosed
    33  )
    34  
    35  // String implements fmt.Stringer.
    36  func (s DatagramEndpointState) String() string {
    37  	switch s {
    38  	case DatagramEndpointStateInitial:
    39  		return "INITIAL"
    40  	case DatagramEndpointStateBound:
    41  		return "BOUND"
    42  	case DatagramEndpointStateConnected:
    43  		return "CONNECTED"
    44  	case DatagramEndpointStateClosed:
    45  		return "CLOSED"
    46  	default:
    47  		panic(fmt.Sprintf("unhandled %[1]T variant = %[1]d", s))
    48  	}
    49  }