1 #region Copyright notice and license 2 // Copyright 2015-2016 gRPC authors. 3 // 4 // Licensed under the Apache License, Version 2.0 (the "License"); 5 // you may not use this file except in compliance with the License. 6 // You may obtain a copy of the License at 7 // 8 // http://www.apache.org/licenses/LICENSE-2.0 9 // 10 // Unless required by applicable law or agreed to in writing, software 11 // distributed under the License is distributed on an "AS IS" BASIS, 12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 // See the License for the specific language governing permissions and 14 // limitations under the License. 15 #endregion 16 17 using System; 18 using System.Collections.Generic; 19 using System.Threading.Tasks; 20 using Grpc.Core; 21 using Grpc.Core.Utils; 22 23 namespace Math 24 { 25 public static class MathExamples 26 { DivExample(Math.MathClient client)27 public static void DivExample(Math.MathClient client) 28 { 29 DivReply result = client.Div(new DivArgs { Dividend = 10, Divisor = 3 }); 30 Console.WriteLine("Div Result: " + result); 31 } 32 DivAsyncExample(Math.MathClient client)33 public static async Task DivAsyncExample(Math.MathClient client) 34 { 35 DivReply result = await client.DivAsync(new DivArgs { Dividend = 4, Divisor = 5 }); 36 Console.WriteLine("DivAsync Result: " + result); 37 } 38 FibExample(Math.MathClient client)39 public static async Task FibExample(Math.MathClient client) 40 { 41 using (var call = client.Fib(new FibArgs { Limit = 5 })) 42 { 43 List<Num> result = await call.ResponseStream.ToListAsync(); 44 Console.WriteLine("Fib Result: " + string.Join("|", result)); 45 } 46 } 47 SumExample(Math.MathClient client)48 public static async Task SumExample(Math.MathClient client) 49 { 50 var numbers = new List<Num> 51 { 52 new Num { Num_ = 1 }, 53 new Num { Num_ = 2 }, 54 new Num { Num_ = 3 } 55 }; 56 57 using (var call = client.Sum()) 58 { 59 await call.RequestStream.WriteAllAsync(numbers); 60 Console.WriteLine("Sum Result: " + await call.ResponseAsync); 61 } 62 } 63 DivManyExample(Math.MathClient client)64 public static async Task DivManyExample(Math.MathClient client) 65 { 66 var divArgsList = new List<DivArgs> 67 { 68 new DivArgs { Dividend = 10, Divisor = 3 }, 69 new DivArgs { Dividend = 100, Divisor = 21 }, 70 new DivArgs { Dividend = 7, Divisor = 2 } 71 }; 72 73 using (var call = client.DivMany()) 74 { 75 await call.RequestStream.WriteAllAsync(divArgsList); 76 Console.WriteLine("DivMany Result: " + string.Join("|", await call.ResponseStream.ToListAsync())); 77 } 78 } 79 DependentRequestsExample(Math.MathClient client)80 public static async Task DependentRequestsExample(Math.MathClient client) 81 { 82 var numbers = new List<Num> 83 { 84 new Num { Num_ = 1 }, 85 new Num { Num_ = 2 }, 86 new Num { Num_ = 3 } 87 }; 88 89 Num sum; 90 using (var sumCall = client.Sum()) 91 { 92 await sumCall.RequestStream.WriteAllAsync(numbers); 93 sum = await sumCall.ResponseAsync; 94 } 95 96 DivReply result = await client.DivAsync(new DivArgs { Dividend = sum.Num_, Divisor = numbers.Count }); 97 Console.WriteLine("Avg Result: " + result); 98 } 99 100 /// <summary> 101 /// Shows how to handle a call ending with non-OK status. 102 /// </summary> HandleErrorExample(Math.MathClient client)103 public static async Task HandleErrorExample(Math.MathClient client) 104 { 105 try 106 { 107 DivReply result = await client.DivAsync(new DivArgs { Dividend = 5, Divisor = 0 }); 108 } 109 catch (RpcException ex) 110 { 111 Console.WriteLine(string.Format("RPC ended with status {0}", ex.Status)); 112 } 113 } 114 115 /// <summary> 116 /// Shows how to send request headers and how to access response headers 117 /// and response trailers. 118 /// </summary> MetadataExample(Math.MathClient client)119 public static async Task MetadataExample(Math.MathClient client) 120 { 121 var requestHeaders = new Metadata 122 { 123 { "custom-header", "custom-value" } 124 }; 125 126 var call = client.DivAsync(new DivArgs { Dividend = 5, Divisor = 0 }, requestHeaders); 127 128 // Get response headers 129 Metadata responseHeaders = await call.ResponseHeadersAsync; 130 131 var result = await call; 132 133 // Get response trailers after the call has finished. 134 Metadata responseTrailers = call.GetTrailers(); 135 } 136 } 137 } 138