iOS 集成grpc

主要介绍在ios中objective-c如何集成和请求grpc。

集成grpc

我们对Markdown编辑器进行了一些功能拓展与语法支持，除了标准的Markdown编辑器功能，我们增加了如下几点新功能，帮助你用它写博客：

1. 打开项目，把proto文件存放到根路径下，如：

   

2. 创建podspec文件，把底下内容复制podspec文件中,只要修改s.name和src ，其他不用

Pod::Spec.new do |s|
  s.name     = 'GuessSong' //修改你的项目名
  s.version  = '0.0.1'
  s.license  = '...'
  s.authors  = { 'Smile' => '[email protected]' }
  s.homepage = '...'
  s.summary = '...'
  s.source = { :git => 'https://github.com/...' }

  s.ios.deployment_target = '9.0'
  s.osx.deployment_target = '10.10'

  # Base directory where the .proto files are.
  src = 'proto' //修改存放proto文件的目录

  # We'll use protoc with the gRPC plugin.
  s.dependency '!ProtoCompiler-gRPCPlugin', '~> 1.0'

  # Pods directory corresponding to this app's Podfile, relative to the location of this podspec.
  pods_root = 'Pods'

  # Path where Cocoapods downloads protoc and the gRPC plugin.
  protoc_dir = "#{pods_root}/!ProtoCompiler"
  protoc = "#{protoc_dir}/protoc"
  plugin = "#{pods_root}/!ProtoCompiler-gRPCPlugin/grpc_objective_c_plugin"

  # Directory where you want the generated files to be placed. This is an example.
  dir = "#{pods_root}/#{s.name}"

  # Run protoc with the Objective-C and gRPC plugins to generate protocol messages and gRPC clients.
  # You can run this command manually if you later change your protos and need to regenerate.
  # Alternatively, you can advance the version of this podspec and run `pod update`.
  s.prepare_command = <<-CMD
    mkdir -p #{dir}
    #{protoc} \
        --plugin=protoc-gen-grpc=#{plugin} \
        --objc_out=#{dir} \
        --grpc_out=#{dir} \
        -I #{src} \
        -I #{protoc_dir} \
        #{src}/*.proto
  CMD

  # The --objc_out plugin generates a pair of .pbobjc.h/.pbobjc.m files for each .proto file.
  s.subspec 'Messages' do |ms|
    ms.source_files = "#{dir}/*.pbobjc.{h,m}"
    ms.header_mappings_dir = dir
    ms.requires_arc = false
    # The generated files depend on the protobuf runtime.
    ms.dependency 'Protobuf'
  end

  # The --objcgrpc_out plugin generates a pair of .pbrpc.h/.pbrpc.m files for each .proto file with
  # a service defined.
  s.subspec 'Services' do |ss|
    ss.source_files = "#{dir}/*.pbrpc.{h,m}"
    ss.header_mappings_dir = dir
    ss.requires_arc = true
    # The generated files depend on the gRPC runtime, and on the files generated by `--objc_out`.
    ss.dependency 'gRPC-ProtoRPC'
    ss.dependency "#{s.name}/Messages"
  end

  s.pod_target_xcconfig = {
    # This is needed by all pods that depend on Protobuf:
    'GCC_PREPROCESSOR_DEFINITIONS' => '$(inherited) GPB_USE_PROTOBUF_FRAMEWORK_IMPORTS=1',
    # This is needed by all pods that depend on gRPC-RxLibrary:
    'CLANG_ALLOW_NON_MODULAR_INCLUDES_IN_FRAMEWORK_MODULES' => 'YES',
  }
end


           

1. 在Podfile文件中加入 pod ‘GuessSong’, :path => ‘.’；
2. 打开终端，进入项目跟路径，执行pod install (该步骤需要翻墙，否则不会成功)
3. 到时集成完成;

grpc 请求（不带头部）

[GRPCCall useInsecureConnectionsForHost:kHostAddress];
    HelloRequest *request = [[HelloRequest alloc]init];
    request.name =@"Objcetive-C";
    Greeter *greeter = [[Greeter alloc]initWithHost: kHostAddress];
    [greeter sayHelloWithRequest:request handler:^(HelloReply * _Nullable response, NSError * _Nullable error) {
        
        if (response) {
          NSLog(@"response %@",response.message);
        }
        NSLog(@"error %@",error);
        
    }];
           

grpc 请求(带头部)

[GRPCCall useInsecureConnectionsForHost:kHostAddress];
    HelloRequest *request = [[HelloRequest alloc]init];
    request.name =@"Objcetive-C";
   
    Greeter *greeter = [[Greeter alloc]initWithHost: kHostAddress];

    GRPCProtoCall *grpcCall = [greeter RPCToSayHelloWithRequest:request handler:^(HelloReply * _Nullable response, NSError * _Nullable error) {
        if (response) {
            NSLog(@"response %@",response.message);
        }
        NSLog(@"error %@",error);

    }];
    grpcCall.requestHeaders[@"appId"] = @"368748510071361536";

    [grpcCall start];