Failed to reindex to remote cluster

[xmudall]

@marevol
As you said, I open a new issue to report this problem.
But unfortunately, I haven't got any log from ES log file about this problem. There's nothing printed during the reindexing operation.
I have to correct a mistake I wrote yesterday. I said the reindex process finished after some time, but actually it won't finished itself until I delete it manually.

------- What I post yesterday ------
I've 2 clusters with 3 nodes for each and i've installed this plugin for all 6 nodes.
I can do this request successfully:
-XPOST http://host1:9200/index1/_reindex/index2/?url=http%3A%2F%2Fhost2%3A9200%2F
and get correct response with a name from it.
After some time the process seems finished from -XGET http://host1:9200/_reindex API, but nothing changed to the host2

[marevol]

Need more info...
What is a version of es and reindexing plugin?
Does it work curl -XPOST http://host1:9200/index1/_reindex/index2?
Is host1 able to access to host2?

[xmudall]

es version: 2.2.1
plugin version: 2.1.1
Reindex inner cluster works fine.
I can get correct response if curl -XGET http://host2:9200/index2/_search from host1