Bump grpcio from 1.8.4 to 1.21.1

[dependabot-preview]

Bumps grpcio from 1.8.4 to 1.21.1.

Release notes

Sourced from grpcio's releases.

Release v1.21.1

This is the 1.21.1 patch release of gRPC Core. This patch is for gRPC-Python only. gRPC Python pkgs for 1.21.0 release could not be uploaded to PyPi due to the issue https://github-redirect.dependabot.com/grpc/grpc/pull/19105.

Please see the notes for the previous releases here: https://github.com/grpc/grpc/releases. Please consult https://grpc.io/ for all information regarding this product.

This release contains refinements, improvements, and bug fixes, with highlights listed below.

Release v1.21.0

Note: gRPC Python pkgs for this release are not available due to the issue https://github-redirect.dependabot.com/grpc/grpc/pull/19105. We will soon be releasing 1.21.1 patch to address this issue.

This is the 1.21.0 release (gandalf) of gRPC Core.

Please see the notes for the previous releases here: https://github.com/grpc/grpc/releases. Please consult https://grpc.io/ for all information regarding this product.

This release contains refinements, improvements, and bug fixes, with highlights listed below.

Note: gRPC Python packages are now marked as deprecated for Python 2.7. See the previous announcement here. Python 2.7 support will be removed on January 1, 2020.

Core

• Service Config Changes to set channel in transient failure on invalid service config. (#18946)
• Add a backup poller to c-ares resolver to take better advantage of c-ares query timeout/retry logic. (#17688)
• Pass WSA_FLAG_NO_HANDLE_INHERIT flag to the WSASocketA() to avoid handle leaking on the Windows in case of using CreateProcess() on the server. (#18060)
• Add fallback-at-startup into xds. (#18665)
• Retire the GRPC_ARENA_INIT_STRATEGY env variable. (#18797)
• Fix gevent segfault with C-Ares as DNS resolver. (#18547)
• Explicitly call getsockname after accept for unix sockets to get the sun_path. (#18556)
• RBE Windows c-core build. (#18546)
• Loosen the dependency on the googleapis-common-protos-types gem. (#18635)
• pick_first: don't go into TRANSIENT_FAILURE upon empty update when in IDLE. (#18598)
• Add guard to the tv_nsec field of gpr_now return value. (#18601)
• Re-enable ALPN check in gRPC C core SSL stack. (#18563)

C++

• Global config variables migration. (#18931)
• Make cc_grpc_library compatible with native proto_library and cc_proto_library rules. (#18955)
• Add alarm in callback streaming test. (#18858)
• Make C++ Channel Interceptors work for lame channels. (#18630)

C#

• Support slice-by-slice deserialization (allow accessing payload as ReadOnlySequence when on netstandard2.0). (#18865)
• Add VS integration for design time build of C# projects. (#18678)
• Migrate interceptor types for server-side interceptors to Grpc.Core.Api. (#18914)
• Add info about C# nightly nuget feed. (#18876)

... (truncated)

Changelog

Sourced from grpcio's changelog.

gRPC Release Schedule

Below is the release schedule for gRPC Java, Go and Core and its dependent languages C++, C#, Objective-C, PHP, Python and Ruby.

Releases are scheduled every six weeks on Tuesdays on a best effort basis. In some unavoidable situations a release may be delayed or a language may skip a release altogether and do the next release to catch up with other languages. See the past releases in the links above. A six-week cycle gives us a good balance between delivering new features/fixes quickly and keeping the release overhead low.

Releases are cut from release branches. For Core and Java repos, the release branch is cut two weeks before the scheduled release date. For Go, the branch is cut just before the release. An RC (release candidate) is published for Core and its dependent languages just after the branch cut. This RC is later promoted to release version if no further changes are made to the release branch. We do our best to keep head of master branch stable at all times regardless of release schedule. Daily build packages from master branch for C#, PHP, Python, Ruby and Protoc plugins are published on packages.grpc.io. If you depend on gRPC in production we recommend to set up your CI system to test the RCs and, if possible, the daily builds.

Names of gRPC releases are here.

Release	Scheduled Branch Cut	Scheduled Release Date
v1.17.0	Nov 19, 2018	Dec 4, 2018
v1.18.0	Jan 2, 2019	Jan 15, 2019
v1.19.0	Feb 12, 2019	Feb 26, 2019
v1.20.0	Mar 26, 2019	Apr 9, 2019
v1.21.0	May 7, 2019	May 21, 2019
v1.22.0	Jun 18, 2019	Jul 2, 2019
v1.23.0	Jul 30, 2019	Aug 13, 2019
v1.24.0	Sept 10, 2019	Sept 24, 2019
v1.25.0	Oct 22, 2019	Nov 5, 2019
v1.26.0	Dec 3, 2019	Dec 17, 2019

Commits

• 75475f0 Merge pull request #19135 from srini100/v1.21.x
• 8a01f63 regenerate projects
• a016488 Bump version to v1.21.1
• 1d3b591 Merge pull request #19105 from gnossen/twine_check_artifacts
• 385e206 Merge pull request #19052 from murgatroid99/node_interop_build_script_fix_bac...
• d721b3a Compensate for no virtualenv module on Linux kokoro workers
• 0108ee8 Merge pull request #19107 from srini100/v1.21.x
• a651957 Use a virtual environment
• 7dae1b9 And the same on Posix systems
• e9ab0e0 Ensure twine is installed on Windows
• Additional commits viewable in compare view

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[dependabot-preview]

Superseded by #67.