Merge pull request #5782 from ipfs/feat/http-context

Switch to using request.Context()

Author: Stebalien

core/corehttp/gateway_handler.go

@@ -64,23 +64,11 @@ func (i *gatewayHandler) newDagFromReader(r io.Reader) (ipld.Node, error) {
 		chunker.DefaultSplitter(r))
 }
 
-// TODO(btc): break this apart into separate handlers using a more expressive muxer
 func (i *gatewayHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
-	ctx, cancel := context.WithTimeout(i.node.Context(), time.Hour)
 	// the hour is a hard fallback, we don't expect it to happen, but just in case
+	ctx, cancel := context.WithTimeout(r.Context(), time.Hour)
 	defer cancel()
 
-	if cn, ok := w.(http.CloseNotifier); ok {
-		clientGone := cn.CloseNotify()
-		go func() {
-			select {
-			case <-clientGone:
-			case <-ctx.Done():
-			}
-			cancel()
-		}()
-	}
-
 	defer func() {
 		if r := recover(); r != nil {
 			log.Error("A panic occurred in the gateway handler!")