我该如何编写一个简单的测试应用程序,以演示如何使用IPC/命名管道?
例如,如果要编写一个控制台应用程序,其中程序1向程序2发送“Hello World”消息,然后程序2接收到该消息并回复“Roger That”给程序1,应如何编写代码?
我该如何编写一个简单的测试应用程序,以演示如何使用IPC/命名管道?
例如,如果要编写一个控制台应用程序,其中程序1向程序2发送“Hello World”消息,然后程序2接收到该消息并回复“Roger That”给程序1,应如何编写代码?
using System;
using System.IO;
using System.IO.Pipes;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
StartServer();
Task.Delay(1000).Wait();
//Client
var client = new NamedPipeClientStream("PipesOfPiece");
client.Connect();
StreamReader reader = new StreamReader(client);
StreamWriter writer = new StreamWriter(client);
while (true)
{
string input = Console.ReadLine();
if (String.IsNullOrEmpty(input)) break;
writer.WriteLine(input);
writer.Flush();
Console.WriteLine(reader.ReadLine());
}
}
static void StartServer()
{
Task.Factory.StartNew(() =>
{
var server = new NamedPipeServerStream("PipesOfPiece");
server.WaitForConnection();
StreamReader reader = new StreamReader(server);
StreamWriter writer = new StreamWriter(server);
while (true)
{
var line = reader.ReadLine();
writer.WriteLine(String.Join("", line.Reverse()));
writer.Flush();
}
});
}
}
}
对于初学者来说,如果涉及到IPC和命名管道,我发现以下NuGet包是非常有帮助的。
要使用此包,请首先安装它:
PS> Install-Package NamedPipeWrapper
然后是一个示例服务器(从链接中复制):
var server = new NamedPipeServer<SomeClass>("MyServerPipe");
server.ClientConnected += delegate(NamedPipeConnection<SomeClass> conn)
{
Console.WriteLine("Client {0} is now connected!", conn.Id);
conn.PushMessage(new SomeClass { Text: "Welcome!" });
};
server.ClientMessage += delegate(NamedPipeConnection<SomeClass> conn, SomeClass message)
{
Console.WriteLine("Client {0} says: {1}", conn.Id, message.Text);
};
server.Start();
示例客户端:
var client = new NamedPipeClient<SomeClass>("MyServerPipe");
client.ServerMessage += delegate(NamedPipeConnection<SomeClass> conn, SomeClass message)
{
Console.WriteLine("Server says: {0}", message.Text);
};
client.Start();
对我来说最好的一点是,与此处被接受的答案不同,它支持多个客户端与单个服务器通信。
echo Hello > \\.\pipe\PipeName
Linux dotnet core 不支持命名管道!
如果部署到 Linux,请尝试 TcpListener。
这个 NamedPipe 客户端/服务器代码通过服务器往返传递一个字节。
DotNet Core 2.0 服务器控制台应用程序。
using System;
using System.IO.Pipes;
using System.Threading.Tasks;
namespace Server
{
class Program
{
static void Main(string[] args)
{
var server = new NamedPipeServerStream("A", PipeDirection.InOut);
server.WaitForConnection();
for (int i =0; i < 10000; i++)
{
var b = new byte[1];
server.Read(b, 0, 1);
Console.WriteLine("Read Byte:" + b[0]);
server.Write(b, 0, 1);
}
}
}
}
DotNet Core 2.0 客户端控制台应用程序
using System;
using System.IO.Pipes;
using System.Threading.Tasks;
namespace Client
{
class Program
{
public static int threadcounter = 1;
public static NamedPipeClientStream client;
static void Main(string[] args)
{
client = new NamedPipeClientStream(".", "A", PipeDirection.InOut, PipeOptions.Asynchronous);
client.Connect();
var t1 = new System.Threading.Thread(StartSend);
var t2 = new System.Threading.Thread(StartSend);
t1.Start();
t2.Start();
}
public static void StartSend()
{
int thisThread = threadcounter;
threadcounter++;
StartReadingAsync(client);
for (int i = 0; i < 10000; i++)
{
var buf = new byte[1];
buf[0] = (byte)i;
client.WriteAsync(buf, 0, 1);
Console.WriteLine($@"Thread{thisThread} Wrote: {buf[0]}");
}
}
public static async Task StartReadingAsync(NamedPipeClientStream pipe)
{
var bufferLength = 1;
byte[] pBuffer = new byte[bufferLength];
await pipe.ReadAsync(pBuffer, 0, bufferLength).ContinueWith(async c =>
{
Console.WriteLine($@"read data {pBuffer[0]}");
await StartReadingAsync(pipe); // read the next data <--
});
}
}
}
Task.Run
替换Task.Factory.StartNew
。请参考链接:https://dev59.com/BWEh5IYBdhLWcg3wvFjY#22087211。 - Rudeyreader
/writer
吗?如果是这样,你只需要处理其中一个吗?我从来没有见过两个都附加在同一个流上的例子。 - JoshVarty