moved Read/Send code to http.Connection

internal/server/PUT-OPTIONS.go

@@ -0,0 +1,12 @@
+package server
+
+import "serveg/internal/http"
+
+// TODO implement file uploading
+func (conn *TcpConnection) handleUpload(req *http.Request) *http.Response {
+	// TODO: use os.OpenFile(filePath + ".upload", os.O_CREATE|os.O_EXCL|os.O_WRONLY, 0o644)
+	// if such file exists, send response like
+	// "somebody is uploading such file right now"
+	// TODO: defer { if !renamed { os.Remove(tmp) } }
+	panic("unimplemented")
+}