gRPC官方快速上手学习笔记(C#版)
上手前准备工作
支持操作系统:windows、OS X、Linux。实例采用.net、.net core sdk。
- The .NET Core SDK command line tools.
- The .NET framework 4.5 (for OS X and Linux, the open source .NET Framework implementation, “Mono”, at version 4+, is suitable)
- Git (to download the sample code)
在windows系统开发环境, 采用 Visual Studio开发工具, 需要满足以下要求:
- .NET Framework 4.5+
- Visual Studio 2013 or 2015.
Git (to download the sample code)
在OS X 系统开发环境, 采用Xamarin Studio开发工具, 需要满足以下要求:
- Mono 4.4.2+ (or Mono 4+ is sufficient if you manually update NuGet to version 2.12+)
- Xamarin Studio 6.0+
Git (to download the sample code)
在 Linux 系统开发环境, 采用 the Monodevelop IDE,需要满足以下要求 :
- Mono 4.4.2+ (or Mono 4+ is sufficient if you manually update nuget to version 2.12+)
- MonoDevelop 5.9+
- A NuGet executable, at version 2.12+ (you’ll need to restore NuGet package dependencies from the command line)
Git (to download the sample code)
下载官方demo
git clone -b v1.6.x https://github.com/grpc/grpc
- 打开下载的demo文
C:\Users\YPF\Desktop\grpc
- 进入目录
examples/csharp/helloworld
Build the example
- 使用Visual Studio打开
Greeter.sln
- 在该项目的解决右键
重新生成解决方案
项目会自动使用NuGet进行必要的package的安装。
运行 a gRPC application
运行服务
> cd GreeterServer/bin/Debug > GreeterServer.exe
运行客户端
> cd GreeterClient/bin/Debug > GreeterClient.exe
更新 a gRPC service
打开目录examples/protos/helloworld.proto
将原来的文件修改为如下并保存:
// The greeting service definition. service Greeter { // Sends a greeting rpc SayHello (HelloRequest) returns (HelloReply) {} // Sends another greeting rpc SayHelloAgain (HelloRequest) returns (HelloReply) {} } // The request message containing the user's name. message HelloRequest { string name = 1; } // The response message containing the greetings message HelloReply { string message = 1; }
生成 gRPC code
在demo的根目录(examples/csharp/helloworld
)下执行如下命令:
packages\Grpc.Tools.1.6.1\tools\windows_x86\protoc.exe -I../../protos --csharp_out Greeter --grpc_out Greeter ../../protos/helloworld.proto --plugin=protoc-gen-grpc=packages/Grpc.Tools.1.6.1/tools/windows_x86/grpc_csharp_plugin.exe
这里的Grpc.Tools.1.6.1
这个命令必须是跟项目中使用NuGet安装的版本一致,否则会报错。
更新并从新运行
修改服务端代码
GreeterServer/Program.cs
class GreeterImpl : Greeter.GreeterBase { // Server side handler of the SayHello RPC public override Task<HelloReply> SayHello(HelloRequest request, ServerCallContext context) { return Task.FromResult(new HelloReply { Message = "Hello " + request.Name }); } // Server side handler for the SayHelloAgain RPC public override Task<HelloReply> SayHelloAgain(HelloRequest request, ServerCallContext context) { return Task.FromResult(new HelloReply { Message = "Hello again " + request.Name }); } }
修改服务端代码
GreeterClient/Program.cs
public static void Main(string[] args) { Channel channel = new Channel("127.0.0.1:50051", ChannelCredentials.Insecure); var client = new Greeter.GreeterClient(channel); String user = "you"; var reply = client.SayHello(new HelloRequest { Name = user }); Console.WriteLine("Greeting: " + reply.Message); var secondReply = client.SayHelloAgain(new HelloRequest { Name = user }); Console.WriteLine("Greeting: " + secondReply.Message); channel.ShutdownAsync().Wait(); Console.WriteLine("Press any key to exit..."); Console.ReadKey(); }
运行 a gRPC application
运行服务
cd GreeterServer/bin/Debug
GreeterServer.exe运行客户端
cd GreeterClient/bin/Debug
GreeterClient.exe
参考文章:
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