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TcpClient.EndConnect Method

.NET Framework 4

Other Versions

Asynchronously accepts an incoming connection attempt.

Namespace: System.Net.Sockets
Assembly: System (in System.dll)

Syntax

C++

Copy

public void EndConnect(
	IAsyncResult asyncResult
)

Parameters

asyncResult: Type: System.IAsyncResult
An IAsyncResult object returned by a call to BeginConnect.

Exceptions

Exception	Condition
ArgumentNullException	The asyncResult parameter is null.
ArgumentException	The asyncResult parameter was not returned by a call to a BeginConnect method.
InvalidOperationException	The EndConnect method was previously called for the asynchronous connection.
SocketException	An error occurred when attempting to access the Socket. See the Remarks section for more information.
ObjectDisposedException	The underlying Socket has been closed.

Remarks

This method blocks until the operation is complete. To perform this operation synchronously, use a Connect method.

Note
If you receive a SocketException, use SocketException.ErrorCode to obtain the specific error code. After you have obtained this code, you can refer to the Windows Sockets version 2 API error code documentation in the MSDN library at http://msdn.microsoft.com/library for a detailed description of the error.

Examples

The following code example ends the asynchronous connection attempt.

C++

Copy


public static ManualResetEvent connectDone = 
    new ManualResetEvent(false);

public static void ConnectCallback(IAsyncResult ar)
{
    connectDone.Set();
    TcpClient t = (TcpClient)ar.AsyncState;
    t.EndConnect(ar);
}

Version Information

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Platforms

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Reference

TcpClient Class

System.Net.Sockets Namespace

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