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TcpClient::ConnectAsync Method (IPAddress, Int32)

.NET Framework 4.5

Connects the client to a remote TCP host using the specified IP address and port number as an asynchronous operation.

Namespace:  System.Net.Sockets
Assembly:  System (in System.dll)
[HostProtectionAttribute(SecurityAction::LinkDemand, ExternalThreading = true)]
public:
Task^ ConnectAsync(
	IPAddress^ address, 
	int port
)

Parameters

address
Type: System.Net::IPAddress

The IPAddress of the host to which you intend to connect.

port
Type: System::Int32

The port number to which you intend to connect.

Return Value

Type: System.Threading.Tasks::Task
Returns Task
The task object representing the asynchronous operation.
ExceptionCondition
ArgumentNullException

The address parameter is nullptr.

ArgumentOutOfRangeException

The port is not between MinPort and MaxPort.

SocketException

An error occurred when accessing the socket. See the Remarks section for more information.

ObjectDisposedException

TcpClient is closed.

This operation will not block. The returned Returns Task object will complete after the TCP connection has been established. This method does not block the calling thread while the connection request is underway.

Call this method to establish a synchronous remote host connection to the specified IPAddress and port number as an asynchronous operation. After connecting with the remote host, use the GetStream method to obtain the underlying NetworkStream. Use this NetworkStream to send and receive data.

NoteNote

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 MSDN for a detailed description of the error.

NoteNote

This member outputs trace information when you enable network tracing in your application. For more information, see Network Tracing in the .NET Framework.

NoteNote

The HostProtectionAttribute attribute applied to this type or member has the following Resources property value: ExternalThreading. The HostProtectionAttribute does not affect desktop applications (which are typically started by double-clicking an icon, typing a command, or entering a URL in a browser). For more information, see the HostProtectionAttribute class or SQL Server Programming and Host Protection Attributes.

.NET Framework

Supported in: 4.5.1, 4.5

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

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