func (h *Headers) wrapResponseWriter(w http.ResponseWriter) http.ResponseWriter {
var newW = httputils.NewFlexibleResponseWriter(func(frw *httputils.FlexibleResponseWriter) {
httputils.CopyHeaders(frw.Header(), w.Header())
h.response.rewrite(w.Header())
frw.BodyWriter = utils.NopCloser(w)
w.WriteHeader(frw.Code)
})
httputils.CopyHeaders(w.Header(), newW.Header())
return newW
}
func (m *mp4Handler) RequestHandle(ctx context.Context, w http.ResponseWriter, r *http.Request) {
// Handle only GET requests with ContentLength of 0 without a Range header
if r.Method != "GET" || len(r.Header.Get("Range")) > 0 || r.ContentLength > 0 {
m.next.RequestHandle(ctx, w, r)
return
}
// parse the request
var start, err = strconv.Atoi(r.URL.Query().Get(startKey))
if err != nil || 0 >= start { // that start is not ok
m.next.RequestHandle(ctx, w, r)
return
}
var startTime = time.Duration(start) * time.Second
var newreq = copyRequest(r)
removeQueryArgument(newreq.URL, startKey)
var header = make(http.Header)
var rr = &rangeReader{
ctx: ctx,
req: copyRequest(newreq),
location: m.loc,
next: m.next,
callback: func(frw *httputils.FlexibleResponseWriter) bool {
if len(header) == 0 {
httputils.CopyHeadersWithout(frw.Header(), header, skipHeaders...)
} else {
return frw.Header().Get("Last-Modified") == header.Get("Last-Modified")
}
return true
},
}
var video *mp4.MP4
video, err = mp4.Decode(rr)
if err != nil {
m.loc.Logger.Errorf("error from the mp4.Decode - %s", err)
m.next.RequestHandle(ctx, w, r)
return
}
if video == nil || video.Moov == nil { // missing something?
m.next.RequestHandle(ctx, w, r)
return
}
cl, err := clip.New(video, startTime, rr)
if err != nil {
m.loc.Logger.Errorf("error while clipping a video(%+v) - %s", video, err)
m.next.RequestHandle(ctx, w, r)
return
}
httputils.CopyHeaders(header, w.Header())
w.Header().Set("Content-Length", strconv.FormatUint(cl.Size(), 10))
size, err := cl.WriteTo(w)
m.loc.Logger.Debugf("wrote %d", size)
if err != nil {
m.loc.Logger.Logf("error on writing the clip response - %s", err)
}
if uint64(size) != cl.Size() {
m.loc.Logger.Debugf("handler.mp4[%p]: expected to write %d but wrote %d", m, cl.Size(), size)
}
}
func (h *reqHandler) knownRanged() {
ranges, err := httputils.ParseRequestRange(h.req.Header.Get("Range"), h.obj.Size)
if err != nil {
err := http.StatusRequestedRangeNotSatisfiable
http.Error(h.resp, http.StatusText(err), err)
return
}
if len(ranges) != 1 {
// We do not support multiple ranges but maybe the upstream does
//!TODO: implement support for multiple ranges
h.carbonCopyProxy()
return
}
reqRange := ranges[0]
httputils.CopyHeaders(h.obj.Headers, h.resp.Header())
h.resp.Header().Set("Content-Range", reqRange.ContentRange(h.obj.Size))
h.resp.Header().Set("Content-Length", strconv.FormatUint(reqRange.Length, 10))
h.rewriteTimeBasedHeaders()
h.resp.WriteHeader(http.StatusPartialContent)
if h.req.Method == "HEAD" {
return
}
h.lazilyRespond(ranges[0].Start, ranges[0].Start+ranges[0].Length-1)
}
func copyRequest(r *http.Request) *http.Request {
req := *r
req.Header = http.Header{}
url := *r.URL
req.URL = &url
httputils.CopyHeaders(r.Header, req.Header)
return &req
}
func (h *reqHandler) knownFull() {
httputils.CopyHeaders(h.obj.Headers, h.resp.Header())
h.resp.Header().Set("Content-Length", strconv.FormatUint(h.obj.Size, 10))
h.rewriteTimeBasedHeaders()
h.resp.WriteHeader(h.obj.Code)
if h.req.Method == "HEAD" {
return
}
h.lazilyRespond(0, h.obj.Size-1)
}
func (p *ReverseProxy) ServeHTTP(ctx context.Context, rw http.ResponseWriter, req *http.Request) {
var upstream = p.defaultUpstream
res, err := p.doRequestFor(rw, req, upstream)
if err != nil {
p.Logger.Logf("[%p] Proxy error: %v", req, err)
httputils.Error(rw, http.StatusInternalServerError)
return
}
if newUpstream, ok := p.CodesToRetry[res.StatusCode]; ok {
upstream = getUpstreamFromContext(ctx, newUpstream)
if upstream != nil {
if err = res.Body.Close(); err != nil {
p.Logger.Logf("[%p] Proxy error on closing response which will be retried: %v", req, err)
}
res, err = p.doRequestFor(rw, req, upstream)
if err != nil {
p.Logger.Logf("[%p] Proxy error: %v", req, err)
httputils.Error(rw, http.StatusInternalServerError)
return
}
} else {
p.Logger.Errorf("[%p] Proxy was configured to retry on code %d with upstream %s but no such upstream exist",
req, res.StatusCode, newUpstream)
}
}
for _, h := range hopHeaders {
res.Header.Del(h)
}
httputils.CopyHeaders(res.Header, rw.Header())
// The "Trailer" header isn't included in the Transport's response,
// at least for *http.Transport. Build it up from Trailer.
if len(res.Trailer) > 0 {
var trailerKeys []string
for k := range res.Trailer {
trailerKeys = append(trailerKeys, k)
}
rw.Header().Add("Trailer", strings.Join(trailerKeys, ", "))
}
rw.WriteHeader(res.StatusCode)
if len(res.Trailer) > 0 {
// Force chunking if we saw a response trailer.
// This prevents net/http from calculating the length for short
// bodies and adding a Content-Length.
if fl, ok := rw.(http.Flusher); ok {
fl.Flush()
}
}
if _, err := io.Copy(rw, res.Body); err != nil {
p.Logger.Logf("[%p] Proxy error during copying: %v", req, err)
}
// Close now, instead of defer, to populate res.Trailer
if err := res.Body.Close(); err != nil {
p.Logger.Errorf("[%p] Proxy error during response close: %v", req, err)
}
httputils.CopyHeaders(res.Trailer, rw.Header())
}
