initial commit

backend/internal/api/flush_writer.go

@@ -0,0 +1,27 @@
+package api
+
+import (
+	"net/http"
+)
+
+type flushWriter struct {
+	w http.ResponseWriter
+	f http.Flusher
+}
+
+func (fw *flushWriter) Write(p []byte) (n int, err error) {
+	// Write Data
+	n, err = fw.w.Write(p)
+	if err == nil && fw.f != nil {
+		fw.f.Flush()
+	}
+	return
+}
+
+func newFlushWriter(w http.ResponseWriter) *flushWriter {
+	flusher, _ := w.(http.Flusher)
+	return &flushWriter{
+		w: w,
+		f: flusher,
+	}
+}