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-rw-r--r--examples/cpp/metadata/greeter_server.cc94
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diff --git a/examples/cpp/metadata/greeter_server.cc b/examples/cpp/metadata/greeter_server.cc
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--- a/examples/cpp/metadata/greeter_server.cc
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-/*
- *
- * Copyright 2015 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 <iostream>
-#include <memory>
-#include <string>
-
-#include <grpcpp/grpcpp.h>
-
-#ifdef BAZEL_BUILD
-#include "examples/protos/helloworld.grpc.pb.h"
-#else
-#include "helloworld.grpc.pb.h"
-#endif
-
-using grpc::Server;
-using grpc::ServerBuilder;
-using grpc::ServerContext;
-using grpc::Status;
-using helloworld::HelloRequest;
-using helloworld::HelloReply;
-using helloworld::Greeter;
-
-// Logic and data behind the server's behavior.
-class GreeterServiceImpl final : public Greeter::Service {
- Status SayHello(ServerContext* context, const HelloRequest* request,
- HelloReply* reply) override {
- std::string prefix("Hello ");
-
- // Get the client's initial metadata
- std::cout << "Client metadata: " << std::endl;
- const std::multimap<grpc::string_ref, grpc::string_ref> metadata = context->client_metadata();
- for (auto iter = metadata.begin(); iter != metadata.end(); ++iter) {
- std::cout << "Header key: " << iter->first << ", value: ";
- // Check for binary value
- size_t isbin = iter->first.find("-bin");
- if ((isbin != std::string::npos) && (isbin + 4 == iter->first.size())) {
- std::cout << std::hex;
- for (auto c : iter->second) {
- std::cout << static_cast<unsigned int>(c);
- }
- std::cout << std::dec;
- } else {
- std::cout << iter->second;
- }
- std::cout << std::endl;
- }
-
- context->AddInitialMetadata("custom-server-metadata", "initial metadata value");
- context->AddTrailingMetadata("custom-trailing-metadata", "trailing metadata value");
- reply->set_message(prefix + request->name());
- return Status::OK;
- }
-};
-
-void RunServer() {
- std::string server_address("0.0.0.0:50051");
- GreeterServiceImpl service;
-
- ServerBuilder builder;
- // Listen on the given address without any authentication mechanism.
- builder.AddListeningPort(server_address, grpc::InsecureServerCredentials());
- // Register "service" as the instance through which we'll communicate with
- // clients. In this case it corresponds to an *synchronous* service.
- builder.RegisterService(&service);
- // Finally assemble the server.
- std::unique_ptr<Server> server(builder.BuildAndStart());
- std::cout << "Server listening on " << server_address << std::endl;
-
- // Wait for the server to shutdown. Note that some other thread must be
- // responsible for shutting down the server for this call to ever return.
- server->Wait();
-}
-
-int main(int argc, char** argv) {
- RunServer();
-
- return 0;
-}