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compose a http.Response in h2quic client
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,111 @@ | ||
| package h2quic | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "errors" | ||
| "io" | ||
| "io/ioutil" | ||
| "net/http" | ||
| "net/textproto" | ||
| "strconv" | ||
| "strings" | ||
|
|
||
| "golang.org/x/net/http2" | ||
| ) | ||
|
|
||
| // copied from net/http2/transport.go | ||
|
|
||
| var errResponseHeaderListSize = errors.New("http2: response header list larger than advertised limit") | ||
| var noBody io.ReadCloser = ioutil.NopCloser(bytes.NewReader(nil)) | ||
|
|
||
| // from the handleResponse function | ||
| func responseFromHeaders(f *http2.MetaHeadersFrame) (*http.Response, error) { | ||
| if f.Truncated { | ||
| return nil, errResponseHeaderListSize | ||
| } | ||
|
|
||
| status := f.PseudoValue("status") | ||
| if status == "" { | ||
| return nil, errors.New("missing status pseudo header") | ||
| } | ||
| statusCode, err := strconv.Atoi(status) | ||
| if err != nil { | ||
| return nil, errors.New("malformed non-numeric status pseudo header") | ||
| } | ||
|
|
||
| if statusCode == 100 { | ||
| // TODO: handle this | ||
|
|
||
| // traceGot100Continue(cs.trace) | ||
| // if cs.on100 != nil { | ||
| // cs.on100() // forces any write delay timer to fire | ||
| // } | ||
| // cs.pastHeaders = false // do it all again | ||
| // return nil, nil | ||
| } | ||
|
|
||
| header := make(http.Header) | ||
| res := &http.Response{ | ||
| Proto: "HTTP/2.0", | ||
| ProtoMajor: 2, | ||
| Header: header, | ||
| StatusCode: statusCode, | ||
| Status: status + " " + http.StatusText(statusCode), | ||
| } | ||
| for _, hf := range f.RegularFields() { | ||
| key := http.CanonicalHeaderKey(hf.Name) | ||
| if key == "Trailer" { | ||
| t := res.Trailer | ||
| if t == nil { | ||
| t = make(http.Header) | ||
| res.Trailer = t | ||
| } | ||
| foreachHeaderElement(hf.Value, func(v string) { | ||
| t[http.CanonicalHeaderKey(v)] = nil | ||
| }) | ||
| } else { | ||
| header[key] = append(header[key], hf.Value) | ||
| } | ||
| } | ||
|
|
||
| return res, nil | ||
| } | ||
|
|
||
| // continuation of the handleResponse function | ||
| func setLength(res *http.Response, isHead, streamEnded bool) *http.Response { | ||
| if !streamEnded || isHead { | ||
| res.ContentLength = -1 | ||
| if clens := res.Header["Content-Length"]; len(clens) == 1 { | ||
| if clen64, err := strconv.ParseInt(clens[0], 10, 64); err == nil { | ||
| res.ContentLength = clen64 | ||
| } else { | ||
| // TODO: care? unlike http/1, it won't mess up our framing, so it's | ||
| // more safe smuggling-wise to ignore. | ||
| } | ||
| } else if len(clens) > 1 { | ||
| // TODO: care? unlike http/1, it won't mess up our framing, so it's | ||
| // more safe smuggling-wise to ignore. | ||
| } | ||
| } | ||
| return res | ||
| } | ||
|
|
||
| // copied from net/http/server.go | ||
|
|
||
| // foreachHeaderElement splits v according to the "#rule" construction | ||
| // in RFC 2616 section 2.1 and calls fn for each non-empty element. | ||
| func foreachHeaderElement(v string, fn func(string)) { | ||
| v = textproto.TrimString(v) | ||
| if v == "" { | ||
| return | ||
| } | ||
| if !strings.Contains(v, ",") { | ||
| fn(v) | ||
| return | ||
| } | ||
| for _, f := range strings.Split(v, ",") { | ||
| if f = textproto.TrimString(f); f != "" { | ||
| fn(f) | ||
| } | ||
| } | ||
| } |