67 lines
2.2 KiB
Go
67 lines
2.2 KiB
Go
/*
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*
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* Copyright 2018 gRPC authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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// Package internal contains common core functionality for ALTS.
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package internal
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import (
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"context"
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"net"
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"google.golang.org/grpc/credentials"
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)
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const (
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// ClientSide identifies the client in this communication.
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ClientSide Side = iota
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// ServerSide identifies the server in this communication.
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ServerSide
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)
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// PeerNotRespondingError is returned when a peer server is not responding
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// after a channel has been established. It is treated as a temporary connection
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// error and re-connection to the server should be attempted.
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var PeerNotRespondingError = &peerNotRespondingError{}
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// Side identifies the party's role: client or server.
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type Side int
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type peerNotRespondingError struct{}
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// Return an error message for the purpose of logging.
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func (e *peerNotRespondingError) Error() string {
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return "peer server is not responding and re-connection should be attempted."
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}
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// Temporary indicates if this connection error is temporary or fatal.
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func (e *peerNotRespondingError) Temporary() bool {
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return true
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}
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// Handshaker defines a ALTS handshaker interface.
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type Handshaker interface {
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// ClientHandshake starts and completes a client-side handshaking and
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// returns a secure connection and corresponding auth information.
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ClientHandshake(ctx context.Context) (net.Conn, credentials.AuthInfo, error)
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// ServerHandshake starts and completes a server-side handshaking and
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// returns a secure connection and corresponding auth information.
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ServerHandshake(ctx context.Context) (net.Conn, credentials.AuthInfo, error)
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// Close terminates the Handshaker. It should be called when the caller
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// obtains the secure connection.
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Close()
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}
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