HttpListener Class
Definition
Important
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Provides a simple, programmatically controlled HTTP protocol listener. This class cannot be inherited.
public ref class HttpListener sealed : IDisposable
public sealed class HttpListener : IDisposable
type HttpListener = class
interface IDisposable
Public NotInheritable Class HttpListener
Implements IDisposable
- Inheritance
-
HttpListener
- Implements
Examples
// This example requires the System and System.Net namespaces.
public static void SimpleListenerExample(string[] prefixes)
{
if (!HttpListener.IsSupported)
{
Console.WriteLine ("Windows XP SP2 or Server 2003 is required to use the HttpListener class.");
return;
}
// URI prefixes are required,
// for example "http://contoso.com:8080/index/".
if (prefixes == null || prefixes.Length == 0)
throw new ArgumentException("prefixes");
// Create a listener.
HttpListener listener = new HttpListener();
// Add the prefixes.
foreach (string s in prefixes)
{
listener.Prefixes.Add(s);
}
listener.Start();
Console.WriteLine("Listening...");
// Note: The GetContext method blocks while waiting for a request.
HttpListenerContext context = listener.GetContext();
HttpListenerRequest request = context.Request;
// Obtain a response object.
HttpListenerResponse response = context.Response;
// Construct a response.
string responseString = "<HTML><BODY> Hello world!</BODY></HTML>";
byte[] buffer = System.Text.Encoding.UTF8.GetBytes(responseString);
// Get a response stream and write the response to it.
response.ContentLength64 = buffer.Length;
System.IO.Stream output = response.OutputStream;
output.Write(buffer,0,buffer.Length);
// You must close the output stream.
output.Close();
listener.Stop();
}
Public Shared Sub SimpleListenerExample(prefixes As String())
If Not HttpListener.IsSupported Then
Console.WriteLine("Windows XP SP2 or Server 2003 is required to use the HttpListener class.")
Return
End If
' URI prefixes are required,
' for example "http://contoso.com:8080/index/".
If prefixes Is Nothing Or prefixes.Length = 0 Then
Throw New ArgumentException("prefixes")
End If
' Create a listener
Dim listener = New HttpListener()
For Each s As String In prefixes
listener.Prefixes.Add(s)
Next
listener.Start()
Console.WriteLine("Listening...")
' Note: The GetContext method blocks while waiting for a request.
Dim context As HttpListenerContext = listener.GetContext()
Console.WriteLine("Listening...")
' Obtain a response object
Dim request As HttpListenerRequest = context.Request
' Construct a response.
Dim response As HttpListenerResponse = context.Response
Dim responseString As String = "<HTML><BODY> Hello world!</BODY></HTML>"
Dim buffer As Byte() = System.Text.Encoding.UTF8.GetBytes(responseString)
' Get a response stream and write the response to it.
response.ContentLength64 = buffer.Length
Dim output As System.IO.Stream = response.OutputStream
output.Write(buffer, 0, buffer.Length)
'You must close the output stream.
output.Close()
listener.Stop()
End Sub
Remarks
For more information about this API, see Supplemental API remarks for HttpListener.
Constructors
HttpListener() |
Initializes a new instance of the HttpListener class. |
Properties
AuthenticationSchemes |
Gets or sets the scheme used to authenticate clients. |
AuthenticationSchemeSelectorDelegate |
Gets or sets the delegate called to determine the protocol used to authenticate clients. |
DefaultServiceNames |
Gets a default list of Service Provider Names (SPNs) as determined by registered prefixes. |
ExtendedProtectionPolicy |
Gets or sets the ExtendedProtectionPolicy to use for extended protection for a session. |
ExtendedProtectionSelectorDelegate |
Gets or sets the delegate called to determine the ExtendedProtectionPolicy to use for each request. |
IgnoreWriteExceptions |
Gets or sets a Boolean value that specifies whether your application receives exceptions that occur when an HttpListener sends the response to the client. |
IsListening |
Gets a value that indicates whether HttpListener has been started. |
IsSupported |
Gets a value that indicates whether HttpListener can be used with the current operating system. |
Prefixes |
Gets the Uniform Resource Identifier (URI) prefixes handled by this HttpListener object. |
Realm |
Gets or sets the realm, or resource partition, associated with this HttpListener object. |
TimeoutManager |
The timeout manager for this HttpListener instance. |
UnsafeConnectionNtlmAuthentication |
Gets or sets a Boolean value that controls whether, when NTLM is used, additional requests using the same Transmission Control Protocol (TCP) connection are required to authenticate. |
Methods
Abort() |
Shuts down the HttpListener object immediately, discarding all currently queued requests. |
BeginGetContext(AsyncCallback, Object) |
Begins asynchronously retrieving an incoming request. |
Close() |
Shuts down the HttpListener. |
EndGetContext(IAsyncResult) |
Completes an asynchronous operation to retrieve an incoming client request. |
Equals(Object) |
Determines whether the specified object is equal to the current object. (Inherited from Object) |
GetContext() |
Waits for an incoming request and returns when one is received. |
GetContextAsync() |
Waits for an incoming request as an asynchronous operation. |
GetHashCode() |
Serves as the default hash function. (Inherited from Object) |
GetType() |
Gets the Type of the current instance. (Inherited from Object) |
MemberwiseClone() |
Creates a shallow copy of the current Object. (Inherited from Object) |
Start() |
Allows this instance to receive incoming requests. |
Stop() |
Causes this instance to stop receiving new incoming requests and terminates processing of all ongoing requests. |
ToString() |
Returns a string that represents the current object. (Inherited from Object) |
Explicit Interface Implementations
IDisposable.Dispose() |
Releases the resources held by this HttpListener object. |