mirror of
https://github.com/caddyserver/caddy.git
synced 2024-12-16 21:56:40 -05:00
e4ce40f8ff
* reverseproxy: Sync up `handleUpgradeResponse` with stdlib I had left this as a TODO for when we bump to minimum 1.17, but I should've realized it was under `internal` so it couldn't be used directly. Copied the functions we needed for parity. Hopefully this is ok! * Add tests and fix godoc comments Co-authored-by: Matthew Holt <mholt@users.noreply.github.com>
57 lines
1.8 KiB
Go
57 lines
1.8 KiB
Go
// Copyright 2015 Matthew Holt and The Caddy 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.
|
|
|
|
// Most of the code in this file was initially borrowed from the Go
|
|
// standard library and modified; It had this copyright notice:
|
|
// Copyright 2021 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.
|
|
|
|
// Original source, copied because the package was marked internal:
|
|
// https://github.com/golang/go/blob/5c489514bc5e61ad9b5b07bd7d8ec65d66a0512a/src/net/http/internal/ascii/print.go
|
|
|
|
package reverseproxy
|
|
|
|
// asciiEqualFold is strings.EqualFold, ASCII only. It reports whether s and t
|
|
// are equal, ASCII-case-insensitively.
|
|
func asciiEqualFold(s, t string) bool {
|
|
if len(s) != len(t) {
|
|
return false
|
|
}
|
|
for i := 0; i < len(s); i++ {
|
|
if asciiLower(s[i]) != asciiLower(t[i]) {
|
|
return false
|
|
}
|
|
}
|
|
return true
|
|
}
|
|
|
|
// asciiLower returns the ASCII lowercase version of b.
|
|
func asciiLower(b byte) byte {
|
|
if 'A' <= b && b <= 'Z' {
|
|
return b + ('a' - 'A')
|
|
}
|
|
return b
|
|
}
|
|
|
|
// asciiIsPrint returns whether s is ASCII and printable according to
|
|
// https://tools.ietf.org/html/rfc20#section-4.2.
|
|
func asciiIsPrint(s string) bool {
|
|
for i := 0; i < len(s); i++ {
|
|
if s[i] < ' ' || s[i] > '~' {
|
|
return false
|
|
}
|
|
}
|
|
return true
|
|
}
|