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transport.go
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transport.go
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/*
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package thrift
import (
"errors"
"io"
)
var errTransportInterrupted = errors.New("Transport Interrupted")
// Flusher is the interface that wraps the basic Flush method
type Flusher interface {
Flush() (err error)
}
// ReadSizeProvider is the interface that wraps the basic RemainingBytes method
type ReadSizeProvider interface {
RemainingBytes() (numBytes uint64)
}
// Transport is an encapsulation of the I/O layer
type Transport interface {
io.ReadWriteCloser
Flusher
ReadSizeProvider
// Opens the transport for communication
Open() error
// Returns true if the transport is open
IsOpen() bool
}
type stringWriter interface {
WriteString(s string) (n int, err error)
}
// RichTransport is an "enhanced" transport with extra capabilities.
// You need to use one of these to construct protocol.
// Notably, Socket does not implement this interface, and it is always a mistake to use
// Socket directly in protocol.
type RichTransport interface {
io.ReadWriter
io.ByteReader
io.ByteWriter
stringWriter
Flusher
ReadSizeProvider
}
// UnknownRemaining is used by transports that can not return a real answer
// for RemainingBytes()
const UnknownRemaining = ^uint64(0)