Merge branch '0.10.7' of github.com:wkh237/react-native-fetch-blob into 0.10.7

android/src/main/java/com/RNFetchBlob/RNFetchBlobReq.java

 import android.content.IntentFilter;
 import android.database.Cursor;
 import android.net.Uri;
+import android.os.Build;
 import android.util.Base64;
 
 import com.RNFetchBlob.Response.RNFetchBlobDefaultResp;
 import com.RNFetchBlob.Response.RNFetchBlobFileResp;
+import com.facebook.common.logging.FLog;
 import com.facebook.react.bridge.Arguments;
 import com.facebook.react.bridge.Callback;
 import com.facebook.react.bridge.ReactApplicationContext;
 import com.facebook.react.bridge.WritableMap;
 import com.facebook.react.modules.core.DeviceEventManagerModule;
 import com.facebook.react.modules.network.OkHttpClientProvider;
+import com.facebook.react.modules.network.TLSSocketFactory;
 
 import java.io.File;
 import java.io.FileOutputStream;
 import java.nio.charset.Charset;
 import java.nio.charset.CharsetEncoder;
 import java.util.ArrayList;
+import java.util.List;
 import java.util.HashMap;
+
 import java.util.concurrent.TimeUnit;
 
 import okhttp3.Call;
 import okhttp3.ConnectionPool;
+import okhttp3.ConnectionSpec;
 import okhttp3.Headers;
 import okhttp3.Interceptor;
 import okhttp3.MediaType;
 import okhttp3.RequestBody;
 import okhttp3.Response;
 import okhttp3.ResponseBody;
+import okhttp3.TlsVersion;
+
 
 public class RNFetchBlobReq extends BroadcastReceiver implements Runnable {
 
             clientBuilder.retryOnConnectionFailure(false);
             clientBuilder.followRedirects(options.followRedirect);
             clientBuilder.followSslRedirects(options.followRedirect);
+            clientBuilder.retryOnConnectionFailure(true);
 
+            OkHttpClient client = enableTls12OnPreLollipop(clientBuilder).build();
 
-            OkHttpClient client = clientBuilder.retryOnConnectionFailure(true).build();
             Call call =  client.newCall(req);
             taskTable.put(taskId, call);
             call.enqueue(new okhttp3.Callback() {
         }
     }
 
+    public static OkHttpClient.Builder enableTls12OnPreLollipop(OkHttpClient.Builder client) {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN && Build.VERSION.SDK_INT <= Build.VERSION_CODES.KITKAT) {
+            try {
+                client.sslSocketFactory(new TLSSocketFactory());
+
+                ConnectionSpec cs = new ConnectionSpec.Builder(ConnectionSpec.MODERN_TLS)
+                        .tlsVersions(TlsVersion.TLS_1_2)
+                        .build();
+
+                List< ConnectionSpec > specs = new ArrayList < > ();
+                specs.add(cs);
+                specs.add(ConnectionSpec.COMPATIBLE_TLS);
+                specs.add(ConnectionSpec.CLEARTEXT);
+
+                client.connectionSpecs(specs);
+            } catch (Exception exc) {
+                FLog.e("OkHttpClientProvider", "Error while enabling TLS 1.2", exc);
+            }
+        }
+
+        return client;
+    }
+
 
 }

ios/RNFetchBlobFS.m

 
 // Write file chunk into an opened stream
 - (void)writeEncodeChunk:(NSString *) chunk {
-    NSMutableData * decodedData = [NSData alloc];
+    NSData * decodedData = nil;
     if([[self.encoding lowercaseString] isEqualToString:@"base64"]) {
-        decodedData = [[NSData alloc] initWithBase64EncodedData:chunk options:0];
-    }
-    if([[self.encoding lowercaseString] isEqualToString:@"utf8"]) {
+        decodedData = [[NSData alloc] initWithBase64EncodedString:chunk options: NSDataBase64DecodingIgnoreUnknownCharacters];
+    } 
+    else if([[self.encoding lowercaseString] isEqualToString:@"utf8"]) {
         decodedData = [chunk dataUsingEncoding:NSUTF8StringEncoding];
     }
     else if([[self.encoding lowercaseString] isEqualToString:@"ascii"]) {
     return;
 }
 
-@end
+@end

polyfill/Blob.js

     // Blob data from file path
     else if(typeof data === 'string' && data.startsWith('RNFetchBlob-file://')) {
       log.verbose('create Blob cache file from file path', data)
+      // set this flag so that we know this blob is a wrapper of an existing file
+      this._isReference = true
       this._ref = String(data).replace('RNFetchBlob-file://', '')
       let orgPath = this._ref
       if(defer)
     })
   }
 
+  safeClose() {
+    if(this._closed)
+      return Promise.reject('Blob has been released.)
+    this._closed = true
+    if(!this._isReference) {
+      return fs.unlink(this._ref).catch((err) => {
+        console.warn(err)
+      })   
+    }
+    else {
+      return Promise.resolve()
+    }
+  }
+
   _invokeOnCreateEvent() {
     log.verbose('invoke create event', this._onCreated)
     this._blobCreated = true