-
-
Save djhohnstein/2188b0b85fc228752abf948e5713e42d to your computer and use it in GitHub Desktop.
Async named pipes example
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
<Project Sdk="Microsoft.NET.Sdk"> | |
<PropertyGroup> | |
<OutputType>exe</OutputType> | |
<TargetFrameworks>net472;net5.0-windows</TargetFrameworks> | |
</PropertyGroup> | |
<ItemGroup> | |
<PackageReference Include="System.IO.Pipes.AccessControl" Version="5.0.0" /> | |
</ItemGroup> | |
</Project> |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
using System; | |
using System.IO; | |
using System.IO.Pipes; | |
using System.Threading.Tasks; | |
class Program | |
{ | |
static void Main(string[] args) | |
{ | |
const string pipeName = @"testpipe"; | |
Task serverTask = RunServerAsync(pipeName); | |
Task clientTask = RunClientAsync(pipeName); | |
Task.WaitAll(serverTask, clientTask); | |
} | |
private static async Task RunServerAsync(string pipeName) | |
{ | |
PipeSecurity security = new PipeSecurity(); | |
security.AddAccessRule(new PipeAccessRule($"{Environment.UserDomainName}\\{Environment.UserName}", PipeAccessRights.ReadWrite, System.Security.AccessControl.AccessControlType.Allow)); | |
#if NET5_0 // .NET Core 3.1 does not support setting ACLs on named pipes. | |
NamedPipeServerStream serverPipe = NamedPipeServerStreamAcl.Create(pipeName, PipeDirection.InOut, 1, PipeTransmissionMode.Message, PipeOptions.Asynchronous, 4096, 4096, security); | |
#elif NETFRAMEWORK | |
NamedPipeServerStream serverPipe = new NamedPipeServerStream(pipeName, PipeDirection.InOut, 1, PipeTransmissionMode.Message, PipeOptions.Asynchronous); | |
#endif | |
await serverPipe.WaitForConnectionAsync(); | |
var writer = new StreamWriter(serverPipe); | |
writer.AutoFlush = true; | |
var reader = new StreamReader(serverPipe); | |
await writer.WriteLineAsync("HELLO"); | |
do | |
{ | |
string line = await reader.ReadLineAsync(); | |
if (line == "BYE" || line == null) | |
{ | |
break; | |
} | |
await writer.WriteLineAsync(line); | |
} while (true); | |
serverPipe.Disconnect(); | |
} | |
private static async Task RunClientAsync(string pipeName) | |
{ | |
var clientPipe = new NamedPipeClientStream(".", pipeName, PipeDirection.InOut, PipeOptions.Asynchronous); | |
await clientPipe.ConnectAsync(); | |
var writer = new StreamWriter(clientPipe); | |
writer.AutoFlush = true; | |
var reader = new StreamReader(clientPipe); | |
string line = await reader.ReadLineAsync(); | |
if (line != "HELLO") | |
{ | |
throw new ApplicationException("Error"); | |
} | |
await writer.WriteLineAsync("1+1=2"); | |
line = await reader.ReadLineAsync(); | |
if (line != "1+1=2") | |
{ | |
throw new ApplicationException("Error"); | |
} | |
await writer.WriteLineAsync("BYE"); | |
clientPipe.WaitForPipeDrain(); | |
clientPipe.Close(); | |
} | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment