The version of okhttp is not up-to-date

[trywarrior]

Please answer these questions before submitting your issue.

What version of gRPC are you using?

1.0.2

What JVM are you using (java -version)?

1.8.0_51

What did you do?

If possible, provide a recipe for reproducing the error.

grpc used the old version of okhttp 2.5.0

What did you expect to see?

Update the version of okhttp to the latest version

What did you see instead?

[carl-mastrangelo]

I believe we have vendored copies of OkHttp in our code, which have since been modified. It may be difficult to update OkHttp.

[ejona86]

The code is vendored, which means it doesn't really change much the version in the dependency chain. See #2999