Vendor main dependencies.

vendor/github.com/vulcand/oxy/forward/responseflusher.go

@@ -0,0 +1,53 @@
+package forward
+
+import (
+	"bufio"
+	"fmt"
+	"net"
+	"net/http"
+)
+
+var (
+	_ http.Hijacker      = &responseFlusher{}
+	_ http.Flusher       = &responseFlusher{}
+	_ http.CloseNotifier = &responseFlusher{}
+)
+
+type responseFlusher struct {
+	http.ResponseWriter
+	flush bool
+}
+
+func newResponseFlusher(rw http.ResponseWriter, flush bool) *responseFlusher {
+	return &responseFlusher{
+		ResponseWriter: rw,
+		flush:          flush,
+	}
+}
+
+func (wf *responseFlusher) Write(p []byte) (int, error) {
+	written, err := wf.ResponseWriter.Write(p)
+	if wf.flush {
+		wf.Flush()
+	}
+	return written, err
+}
+
+func (wf *responseFlusher) Hijack() (net.Conn, *bufio.ReadWriter, error) {
+	hijacker, ok := wf.ResponseWriter.(http.Hijacker)
+	if !ok {
+		return nil, nil, fmt.Errorf("the ResponseWriter doesn't support the Hijacker interface")
+	}
+	return hijacker.Hijack()
+}
+
+func (wf *responseFlusher) CloseNotify() <-chan bool {
+	return wf.ResponseWriter.(http.CloseNotifier).CloseNotify()
+}
+
+func (wf *responseFlusher) Flush() {
+	flusher, ok := wf.ResponseWriter.(http.Flusher)
+	if ok {
+		flusher.Flush()
+	}
+}