Clean code

app/src/main/java/com/fongmi/android/tv/server/process/Local.java

@@ -127,8 +127,8 @@ public class Local implements Process {
         if (headerIfRangeMissingOrMatching && range != null && startFrom >= 0 && startFrom < fileLen) {
             if (headerIfNoneMatchPresentAndMatching) {
                 res = NanoHTTPD.newFixedLengthResponse(NanoHTTPD.Response.Status.NOT_MODIFIED, mime, "");
-                res.addHeader("Accept-Ranges", "bytes");
-                res.addHeader("ETag", etag);
+                res.addHeader(HttpHeaders.ACCEPT_RANGES, "bytes");
+                res.addHeader(HttpHeaders.ETAG, etag);
             } else {
                 if (endAt < 0) endAt = fileLen - 1;
                 long newLen = endAt - startFrom + 1;

app/src/main/java/com/fongmi/android/tv/utils/Download.java

@@ -3,6 +3,7 @@ package com.fongmi.android.tv.utils;
 import com.fongmi.android.tv.App;
 import com.github.catvod.net.OkHttp;
 import com.github.catvod.utils.Path;
+import com.google.common.net.HttpHeaders;
 
 import java.io.BufferedInputStream;
 import java.io.File;
@@ -41,7 +42,7 @@ public class Download {
         try {
             Path.clear(file);
             Response response = OkHttp.newCall(url).execute();
-            download(response.body().byteStream(), Double.parseDouble(response.header("Content-Length", "1")));
+            download(response.body().byteStream(), Double.parseDouble(response.header(HttpHeaders.CONTENT_LENGTH, "1")));
             if (callback != null) App.post(() -> callback.success(Path.chmod(file)));
         } catch (Exception e) {
             if (callback != null) App.post(() -> callback.error(e.getMessage()));