feat(request-timeout): set proper timeout for HTTP requests

set connect timeout to 5s
set read and write timeout to 5s
set call timeout to 10s
for image-downloading requests, set call timeout to 0 (no timeout)

app/src/main/java/com/hippo/ehviewer/EhApplication.java

@@ -132,9 +132,10 @@ public class EhApplication extends RecordingApplication {
         EhApplication application = ((EhApplication) context.getApplicationContext());
         if (application.mOkHttpClient == null) {
             application.mOkHttpClient = new OkHttpClient.Builder()
-                    .connectTimeout(10, TimeUnit.SECONDS)
-                    .readTimeout(10, TimeUnit.SECONDS)
-                    .writeTimeout(10, TimeUnit.SECONDS)
+                    .connectTimeout(5, TimeUnit.SECONDS)
+                    .readTimeout(5, TimeUnit.SECONDS)
+                    .writeTimeout(5, TimeUnit.SECONDS)
+                    .callTimeout(10, TimeUnit.SECONDS)
                     .cookieJar(getEhCookieStore(application))
                     .dns(new EhDns(application))
                     .proxySelector(getEhProxySelector(application))

app/src/main/java/com/hippo/ehviewer/spider/SpiderQueen.java

@@ -1219,7 +1219,10 @@ public final class SpiderQueen implements Runnable {
                         Log.d(TAG, "Start download image " + index);
                     }
 
-                    Call call = mHttpClient.newCall(new EhRequestBuilder(targetImageUrl, referer).build());
+                    // disable Call Timeout for image-downloading requests
+                    Call call = mHttpClient.newBuilder()
+                            .callTimeout(0, TimeUnit.SECONDS).build()
+                            .newCall(new EhRequestBuilder(targetImageUrl, referer).build());
                     Response response = call.execute();
                     ResponseBody responseBody = response.body();