add cronet and zlip files

include/grpc/grpc_cronet.h

@@ -0,0 +1,37 @@
+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#ifndef GRPC_GRPC_CRONET_H
+#define GRPC_GRPC_CRONET_H
+
+#include <grpc/grpc.h>
+#include <grpc/support/port_platform.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+GRPCAPI grpc_channel* grpc_cronet_secure_channel_create(
+    void* engine, const char* target, const grpc_channel_args* args,
+    void* reserved);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GRPC_GRPC_CRONET_H */

include/grpcpp/security/cronet_credentials.h

@@ -0,0 +1,33 @@
+//
+//
+// Copyright 2019 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
+
+#ifndef GRPCPP_SECURITY_CRONET_CREDENTIALS_H
+#define GRPCPP_SECURITY_CRONET_CREDENTIALS_H
+
+#include <memory>
+
+namespace grpc {
+
+class ChannelCredentials;
+
+/// Credentials for a channel using Cronet.
+std::shared_ptr<ChannelCredentials> CronetChannelCredentials(void* engine);
+
+}  // namespace grpc
+
+#endif  // GRPCPP_SECURITY_CRONET_CREDENTIALS_H

src/core/ext/transport/cronet/client/secure/cronet_channel_create.cc

@@ -0,0 +1,59 @@
+//
+//
+// Copyright 2016 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/ext/transport/cronet/client/secure/cronet_channel_create.h"
+
+#include "absl/status/statusor.h"
+
+#include <grpc/impl/channel_arg_names.h>
+#include <grpc/support/log.h>
+
+#include "src/core/ext/transport/cronet/transport/cronet_transport.h"
+#include "src/core/lib/channel/channel_args.h"
+#include "src/core/lib/channel/channel_args_preconditioning.h"
+#include "src/core/lib/config/core_configuration.h"
+#include "src/core/lib/gprpp/ref_counted_ptr.h"
+#include "src/core/lib/iomgr/exec_ctx.h"
+#include "src/core/lib/surface/channel.h"
+#include "src/core/lib/surface/channel_create.h"
+#include "src/core/lib/surface/channel_stack_type.h"
+#include "src/core/lib/transport/transport.h"
+
+GRPCAPI grpc_channel* grpc_cronet_secure_channel_create(
+    void* engine, const char* target, const grpc_channel_args* args,
+    void* reserved) {
+  gpr_log(GPR_DEBUG,
+          "grpc_create_cronet_transport: stream_engine = %p, target=%s", engine,
+          target);
+
+  // Disable client authority filter when using Cronet
+  auto channel_args = grpc_core::CoreConfiguration::Get()
+                          .channel_args_preconditioning()
+                          .PreconditionChannelArgs(args)
+                          .Set(GRPC_ARG_DISABLE_CLIENT_AUTHORITY_FILTER, 1);
+
+  grpc_core::Transport* ct = grpc_create_cronet_transport(
+      engine, target, channel_args.ToC().get(), reserved);
+
+  grpc_core::ExecCtx exec_ctx;
+  auto channel = grpc_core::ChannelCreate(target, channel_args,
+                                          GRPC_CLIENT_DIRECT_CHANNEL, ct);
+  return channel.ok() ? channel->release()->c_ptr() : nullptr;
+}

src/core/ext/transport/cronet/client/secure/cronet_channel_create.h

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+//
+//
+// Copyright 2016 gRPC authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+//
+
+#ifndef GRPC_SRC_CORE_EXT_TRANSPORT_CRONET_CLIENT_SECURE_CRONET_CHANNEL_CREATE_H
+#define GRPC_SRC_CORE_EXT_TRANSPORT_CRONET_CLIENT_SECURE_CRONET_CHANNEL_CREATE_H
+#include <grpc/support/port_platform.h>
+
+#include <grpc/grpc.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+GRPCAPI grpc_channel* grpc_cronet_secure_channel_create(
+    void* engine, const char* target, const grpc_channel_args* args,
+    void* reserved);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif  // GRPC_SRC_CORE_EXT_TRANSPORT_CRONET_CLIENT_SECURE_CRONET_CHANNEL_CREATE_H