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error.go
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error.go
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/*
* Copyright 2022 CloudWeGo Authors
*
* 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.
*
* The MIT License (MIT)
*
* Copyright (c) 2015-present Aliaksandr Valialkin, VertaMedia, Kirill Danshin, Erik Dubbelboer, FastHTTP Authors
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
* This file may have been modified by CloudWeGo authors. All CloudWeGo
* Modifications are Copyright 2022 CloudWeGo Authors.
*/
package ext
import (
"errors"
"fmt"
"io"
errs "github.com/cloudwego/hertz/pkg/common/errors"
)
var (
errNeedMore = errs.New(errs.ErrNeedMore, errs.ErrorTypePublic, "cannot find trailing lf")
errBodyTooLarge = errs.New(errs.ErrBodyTooLarge, errs.ErrorTypePublic, "ext")
)
func HeaderError(typ string, err, errParse error, b []byte) error {
if !errors.Is(errParse, errs.ErrNeedMore) {
return headerErrorMsg(typ, errParse, b)
}
if err == nil {
return errNeedMore
}
// Buggy servers may leave trailing CRLFs after http body.
// Treat this case as EOF.
if isOnlyCRLF(b) {
return io.EOF
}
return headerErrorMsg(typ, err, b)
}
func headerErrorMsg(typ string, err error, b []byte) error {
return errs.NewPublic(fmt.Sprintf("error when reading %s headers: %s. Buffer size=%d, contents: %s", typ, err, len(b), BufferSnippet(b)))
}