mirror of
https://github.com/octoleo/restic.git
synced 2024-12-24 11:55:28 +00:00
134 lines
4.1 KiB
Go
134 lines
4.1 KiB
Go
// Copyright 2014 The Go Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package http2
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
)
|
|
|
|
// An ErrCode is an unsigned 32-bit error code as defined in the HTTP/2 spec.
|
|
type ErrCode uint32
|
|
|
|
const (
|
|
ErrCodeNo ErrCode = 0x0
|
|
ErrCodeProtocol ErrCode = 0x1
|
|
ErrCodeInternal ErrCode = 0x2
|
|
ErrCodeFlowControl ErrCode = 0x3
|
|
ErrCodeSettingsTimeout ErrCode = 0x4
|
|
ErrCodeStreamClosed ErrCode = 0x5
|
|
ErrCodeFrameSize ErrCode = 0x6
|
|
ErrCodeRefusedStream ErrCode = 0x7
|
|
ErrCodeCancel ErrCode = 0x8
|
|
ErrCodeCompression ErrCode = 0x9
|
|
ErrCodeConnect ErrCode = 0xa
|
|
ErrCodeEnhanceYourCalm ErrCode = 0xb
|
|
ErrCodeInadequateSecurity ErrCode = 0xc
|
|
ErrCodeHTTP11Required ErrCode = 0xd
|
|
)
|
|
|
|
var errCodeName = map[ErrCode]string{
|
|
ErrCodeNo: "NO_ERROR",
|
|
ErrCodeProtocol: "PROTOCOL_ERROR",
|
|
ErrCodeInternal: "INTERNAL_ERROR",
|
|
ErrCodeFlowControl: "FLOW_CONTROL_ERROR",
|
|
ErrCodeSettingsTimeout: "SETTINGS_TIMEOUT",
|
|
ErrCodeStreamClosed: "STREAM_CLOSED",
|
|
ErrCodeFrameSize: "FRAME_SIZE_ERROR",
|
|
ErrCodeRefusedStream: "REFUSED_STREAM",
|
|
ErrCodeCancel: "CANCEL",
|
|
ErrCodeCompression: "COMPRESSION_ERROR",
|
|
ErrCodeConnect: "CONNECT_ERROR",
|
|
ErrCodeEnhanceYourCalm: "ENHANCE_YOUR_CALM",
|
|
ErrCodeInadequateSecurity: "INADEQUATE_SECURITY",
|
|
ErrCodeHTTP11Required: "HTTP_1_1_REQUIRED",
|
|
}
|
|
|
|
func (e ErrCode) String() string {
|
|
if s, ok := errCodeName[e]; ok {
|
|
return s
|
|
}
|
|
return fmt.Sprintf("unknown error code 0x%x", uint32(e))
|
|
}
|
|
|
|
// ConnectionError is an error that results in the termination of the
|
|
// entire connection.
|
|
type ConnectionError ErrCode
|
|
|
|
func (e ConnectionError) Error() string { return fmt.Sprintf("connection error: %s", ErrCode(e)) }
|
|
|
|
// StreamError is an error that only affects one stream within an
|
|
// HTTP/2 connection.
|
|
type StreamError struct {
|
|
StreamID uint32
|
|
Code ErrCode
|
|
Cause error // optional additional detail
|
|
}
|
|
|
|
func streamError(id uint32, code ErrCode) StreamError {
|
|
return StreamError{StreamID: id, Code: code}
|
|
}
|
|
|
|
func (e StreamError) Error() string {
|
|
if e.Cause != nil {
|
|
return fmt.Sprintf("stream error: stream ID %d; %v; %v", e.StreamID, e.Code, e.Cause)
|
|
}
|
|
return fmt.Sprintf("stream error: stream ID %d; %v", e.StreamID, e.Code)
|
|
}
|
|
|
|
// 6.9.1 The Flow Control Window
|
|
// "If a sender receives a WINDOW_UPDATE that causes a flow control
|
|
// window to exceed this maximum it MUST terminate either the stream
|
|
// or the connection, as appropriate. For streams, [...]; for the
|
|
// connection, a GOAWAY frame with a FLOW_CONTROL_ERROR code."
|
|
type goAwayFlowError struct{}
|
|
|
|
func (goAwayFlowError) Error() string { return "connection exceeded flow control window size" }
|
|
|
|
// connError represents an HTTP/2 ConnectionError error code, along
|
|
// with a string (for debugging) explaining why.
|
|
//
|
|
// Errors of this type are only returned by the frame parser functions
|
|
// and converted into ConnectionError(Code), after stashing away
|
|
// the Reason into the Framer's errDetail field, accessible via
|
|
// the (*Framer).ErrorDetail method.
|
|
type connError struct {
|
|
Code ErrCode // the ConnectionError error code
|
|
Reason string // additional reason
|
|
}
|
|
|
|
func (e connError) Error() string {
|
|
return fmt.Sprintf("http2: connection error: %v: %v", e.Code, e.Reason)
|
|
}
|
|
|
|
type pseudoHeaderError string
|
|
|
|
func (e pseudoHeaderError) Error() string {
|
|
return fmt.Sprintf("invalid pseudo-header %q", string(e))
|
|
}
|
|
|
|
type duplicatePseudoHeaderError string
|
|
|
|
func (e duplicatePseudoHeaderError) Error() string {
|
|
return fmt.Sprintf("duplicate pseudo-header %q", string(e))
|
|
}
|
|
|
|
type headerFieldNameError string
|
|
|
|
func (e headerFieldNameError) Error() string {
|
|
return fmt.Sprintf("invalid header field name %q", string(e))
|
|
}
|
|
|
|
type headerFieldValueError string
|
|
|
|
func (e headerFieldValueError) Error() string {
|
|
return fmt.Sprintf("invalid header field value %q", string(e))
|
|
}
|
|
|
|
var (
|
|
errMixPseudoHeaderTypes = errors.New("mix of request and response pseudo headers")
|
|
errPseudoAfterRegular = errors.New("pseudo header field after regular")
|
|
)
|