// Copyright (c) 2014 Baidu, Inc. // // 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. // A server to receive EchoRequest and send back EchoResponse. #include <gflags/gflags.h> #include <butil/logging.h> #include <brpc/server.h> #include <brpc/nshead_service.h> DEFINE_int32(port, 8010, "TCP Port of this server"); DEFINE_int32(idle_timeout_s, -1, "Connection will be closed if there is no " "read/write operations during the last `idle_timeout_s'"); DEFINE_int32(max_concurrency, 0, "Limit of request processing in parallel"); // Adapt your own nshead-based protocol to use brpc class MyNsheadProtocol : public brpc::NsheadService { public: void ProcessNsheadRequest(const brpc::Server&, brpc::Controller* cntl, const brpc::NsheadMessage& request, brpc::NsheadMessage* response, brpc::NsheadClosure* done) { // This object helps you to call done->Run() in RAII style. If you need // to process the request asynchronously, pass done_guard.release(). brpc::ClosureGuard done_guard(done); if (cntl->Failed()) { // NOTE: You can send back a response containing error information // back to client instead of closing the connection. cntl->CloseConnection("Close connection due to previous error"); return; } *response = request; // Just echo the request to client } }; int main(int argc, char* argv[]) { // Parse gflags. We recommend you to use gflags as well. GFLAGS_NS::ParseCommandLineFlags(&argc, &argv, true); brpc::Server server; brpc::ServerOptions options; options.nshead_service = new MyNsheadProtocol; options.idle_timeout_sec = FLAGS_idle_timeout_s; options.max_concurrency = FLAGS_max_concurrency; // Start the server. if (server.Start(FLAGS_port, &options) != 0) { LOG(ERROR) << "Fail to start EchoServer"; return -1; } // Wait until Ctrl-C is pressed, then Stop() and Join() the server. server.RunUntilAskedToQuit(); return 0; }