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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;
+}