Google的ProtoBuf序列化器性能的牛逼已经有目共睹了，可以把它应用到Socket通讯，队列，Wcf中，身为dotnet程序员一边期待着不久后Grpc对dotnet core的支持更期待着Wcf有一天能在Linux平台上闪瞎所有人。现在简单表述下Wcf中应用ProtoBuf替代默认的序列化器。
准备：
首先，新建一套Wcf的解决方案，包含服务，宿主外加两个客户端用来测试调用：
Wcf_ProtoBufSample.ClientViaMetaData会通过添加服务引用的方式调用服务，Wcf_ProtoBufSample.ClientViaReference则直接通过对Wcf_ProtoBufSample.Service添加引用来调动服务。
分别为每个项目对protobuf-net添加引用： install-package protobuf-net -Version 2.0.0.668（此处现在比较纠结，protobuf-net的最新版本是2.1.0.0，但现在移除了ProtoBuf.ServiceModel，目测是为了兼容dotnet core，估计以后还会再回来的。）
接下来在Wcf_ProtoBufSample.Service中简单定义个服务：
[ServiceContract, ProtoContract] public interface IGreeterService { [OperationContract] Reply Get(Request request); } public class GreeterService : IGreeterService { public Reply Get(Request request) { Reply reply = new Reply() { GreetInfo = "你好！" + request.Name + ",恭喜你" + request.Age + "岁了！" }; return reply; } } [DataContract] [ProtoContract] public class Request { [DataMember(Order = 0)] [ProtoMember(1)] public string Name { set; get; } [DataMember(Order = 1)] [ProtoMember(2)] public int Age { set; get; } } [DataContract] [ProtoContract] public class Reply { [DataMember(Order = 0)] [ProtoMember(1)] public string GreetInfo { set; get; } }View Code
代码中对DataMember添加了Order的特性，方便过会用。
配置宿主
在宿主中进行配置：
<system.serviceModel> <services> <service behaviorConfiguration="GreeterServiceBehavior" name="Wcf_ProtoBufSample.Service.GreeterService"> <endpoint address="net.tcp://127.0.0.1:6978/GreeterService" binding="netTcpBinding" behaviorConfiguration="protoEndpointBehavior" bindingConfiguration="DefaultTcpBinding" contract="Wcf_ProtoBufSample.Service.IGreeterService"> </endpoint> <endpoint address="net.tcp://127.0.0.1:6976/mex" binding="mexTcpBinding" contract="IMetadataExchange"> </endpoint> </service> </services> <behaviors> <serviceBehaviors> <behavior name="GreeterServiceBehavior"> <serviceMetadata/> <serviceDebug includeExceptionDetailInFaults="true"/> </behavior> </serviceBehaviors> <endpointBehaviors> <behavior name="protoEndpointBehavior"> <protobuf/> </behavior> </endpointBehaviors> </behaviors> <extensions> <behaviorExtensions> <add name="protobuf" type="ProtoBuf.ServiceModel.ProtoBehaviorExtension, protobuf-net, Version=2.0.0.668, Culture=neutral, PublicKeyToken=257b51d87d2e4d67"/> </behaviorExtensions> </extensions> <bindings> <netTcpBinding> <binding name="DefaultTcpBinding" closeTimeout="00:00:30" openTimeout="00:00:30" receiveTimeout="00:05:00" sendTimeout="00:50:00" transactionFlow="true" transferMode="Buffered" listenBacklog="100" maxBufferPoolSize="524288" maxBufferSize="6553600" maxConnections="100" maxReceivedMessageSize="6553600" > </binding> </netTcpBinding> </bindings> </system.serviceModel>
View Code
共享元数据的方式调用
然后在Wcf_ProtoBufSample.ClientViaReference项目中添加对Wcf_ProtoBufSample.Service的引用并配置客户端的调用信息：
<system.serviceModel> <bindings> <netTcpBinding> <binding name="DefaultTcpBinding" closeTimeout="00:00:30" openTimeout="00:00:30" receiveTimeout="00:05:00" sendTimeout="00:50:00" transactionFlow="true" transferMode="Buffered" listenBacklog="100" maxBufferPoolSize="524288" maxBufferSize="6553600" maxConnections="100" maxReceivedMessageSize="6553600" > </binding> </netTcpBinding> </bindings> <behaviors> <endpointBehaviors> <behavior name="protoEndpointBehavior"> <protobuf/> </behavior> </endpointBehaviors> </behaviors> <extensions> <behaviorExtensions> <add name="protobuf" type="ProtoBuf.ServiceModel.ProtoBehaviorExtension, protobuf-net, Version=2.0.0.668, Culture=neutral, PublicKeyToken=257b51d87d2e4d67"/> </behaviorExtensions> </extensions> <client> <endpoint address="net.tcp://127.0.0.1:6978/GreeterService" binding="netTcpBinding" bindingConfiguration="DefaultTcpBinding" contract="Wcf_ProtoBufSample.Service.IGreeterService" behaviorConfiguration="protoEndpointBehavior" name="GreeterService"> </endpoint> </client> </system.serviceModel>
View Code
简单测试一下:
ChannelFactory<IGreeterService> factory = new ChannelFactory<IGreeterService>("GreeterService"); IGreeterService client = factory.CreateChannel(); var res = client.Get(new Request() {Name = "liam",Age = 18}); Console.WriteLine(res.GreetInfo); Console.ReadKey();View Code
通过添加服务引用或者WcfUtil
添加服务引用才是我们的最爱，简单快捷，易于维护：
在Wcf_ProtoBufSample.ClientViaMetaData中右键添加服务引用，这里我公开的地址是：net.tcp://127.0.0.1:6976/mex，
拿过来直接用肯定是不行的，毕竟我们已经修改了默认的序列化器，所以在配置中添加对ProtoBuf的配置信息，所以还是需要在配置中引用ProtoBuf的配置的：
<system.serviceModel> <bindings> <netTcpBinding> <binding name="NetTcpBinding_IGreeterService" /> </netTcpBinding> </bindings> <client> <endpoint address="net.tcp://127.0.0.1:6978/GreeterService" behaviorConfiguration="protoEndpointBehavior" binding="netTcpBinding" bindingConfiguration="NetTcpBinding_IGreeterService" contract="ServiceReference.IGreeterService" name="NetTcpBinding_IGreeterService"> <identity> <userPrincipalName value="DESKTOP-078UA43\admin" /> </identity> </endpoint> </client> <behaviors> <serviceBehaviors> <behavior name="GreeterServiceBehavior"> <serviceMetadata/> <serviceDebug includeExceptionDetailInFaults="true"/> </behavior> </serviceBehaviors> <endpointBehaviors> <behavior name="protoEndpointBehavior"> <protobuf/> </behavior> </endpointBehaviors> </behaviors> <extensions> <behaviorExtensions> <add name="protobuf" type="ProtoBuf.ServiceModel.ProtoBehaviorExtension, protobuf-net, Version=2.0.0.668, Culture=neutral, PublicKeyToken=257b51d87d2e4d67"/> </behaviorExtensions> </extensions> </system.serviceModel>
View Code
简单调用一下进行测试：
GreeterServiceClient client=new GreeterServiceClient("NetTcpBinding_IGreeterService"); var res = client.Get(new Request() { Name = "liam", Age = 18 }); Console.WriteLine(res.GreetInfo);View Code
运行后发现报错了！
细致一些就不难发现，尽管我们的代理类生成的很简单快捷，但公开元数据的描述不会包含ProtoBuf特性的描述，所以此时我们定义的 [DataMember(Order = 0)]的Order属性此时就要发光发热了！接下来要修改的就是生成的代理类，添加ProtoBuf的序列号特性，在类上标注ProtoContract特性在属性上标注ProtoMember的特性，而且可以看着Order的顺序就行标注：
ProtoBuf的序列化是有顺序的，所以为了保证与服务端一致，此处需要谨慎（此处需要注意，更新服务引用小心自己定义的属性被覆盖）
简单测试：
Over!
（备注：貌似这么做比较复杂，毕竟开源的项目还是挺多的：https://github.com/maingi4/ProtoBuf.Services）
原标题：在Wcf中应用ProtoBuf替代默认的序列化器
关键词：wcf
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