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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,114 @@ | ||
| // Copyright 2021-2023 antlabs. All rights reserved. | ||
| // | ||
| // 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 quickws | ||
|
|
||
| import ( | ||
| "bufio" | ||
| "bytes" | ||
| "net" | ||
| "net/http" | ||
|
|
||
| "github.com/antlabs/wsutil/bufio2" | ||
| "github.com/antlabs/wsutil/bytespool" | ||
| "github.com/antlabs/wsutil/enum" | ||
| "github.com/antlabs/wsutil/fixedreader" | ||
| "github.com/antlabs/wsutil/rsp" | ||
| ) | ||
|
|
||
| type UpgradeServer struct { | ||
| config Config | ||
| } | ||
|
|
||
| func NewUpgrade(opts ...ServerOption) *UpgradeServer { | ||
| var conf ConnOption | ||
| conf.defaultSetting() | ||
| for _, o := range opts { | ||
| o(&conf) | ||
| } | ||
| return &UpgradeServer{config: conf.Config} | ||
| } | ||
|
|
||
| func (u *UpgradeServer) Upgrade(w http.ResponseWriter, r *http.Request) (c *Conn, err error) { | ||
| return upgradeInner(w, r, &u.config) | ||
| } | ||
|
|
||
| func Upgrade(w http.ResponseWriter, r *http.Request, opts ...ServerOption) (c *Conn, err error) { | ||
| var conf ConnOption | ||
| conf.defaultSetting() | ||
| for _, o := range opts { | ||
| o(&conf) | ||
| } | ||
| return upgradeInner(w, r, &conf.Config) | ||
| } | ||
|
|
||
| func upgradeInner(w http.ResponseWriter, r *http.Request, conf *Config) (c *Conn, err error) { | ||
| if ecode, err := checkRequest(r); err != nil { | ||
| http.Error(w, err.Error(), ecode) | ||
| return nil, err | ||
| } | ||
|
|
||
| hi, ok := w.(http.Hijacker) | ||
| if !ok { | ||
| return nil, ErrNotFoundHijacker | ||
| } | ||
|
|
||
| var read *bufio.Reader | ||
| var conn net.Conn | ||
| var rw *bufio.ReadWriter | ||
| if conf.parseMode == ParseModeWindows { | ||
| // 这里不需要rw，直接使用conn | ||
| conn, rw, err = hi.Hijack() | ||
| bufio2.ClearReadWriter(rw) | ||
| rsp.ClearRsp(w) | ||
| rw = nil | ||
| } else { | ||
| var rw *bufio.ReadWriter | ||
| conn, rw, err = hi.Hijack() | ||
| read = rw.Reader | ||
| rw = nil | ||
| } | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| // 是否打开解压缩 | ||
| // 外层接收压缩, 并且客户端发送扩展过来 | ||
| if conf.decompression { | ||
| conf.decompression = needDecompression(r.Header) | ||
| } | ||
|
|
||
| buf := bytespool.GetUpgradeRespBytes() | ||
|
|
||
| tmpWriter := bytes.NewBuffer((*buf)[:0]) | ||
| defer func() { | ||
| bytespool.PutUpgradeRespBytes(buf) | ||
| tmpWriter = nil | ||
| }() | ||
| if err = prepareWriteResponse(r, tmpWriter, conf); err != nil { | ||
| return | ||
| } | ||
|
|
||
| if _, err := conn.Write(tmpWriter.Bytes()); err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| var fr fixedreader.FixedReader | ||
| var bp bytespool.BytesPool | ||
| bp.Init() | ||
| if conf.parseMode == ParseModeWindows { | ||
| fr.Init(conn, bytespool.GetBytes(conf.initPayloadSize()+enum.MaxFrameHeaderSize)) | ||
| } | ||
| return newConn(conn, false, conf, fr, read, bp), nil | ||
| } |