TcpClient.Connect Method (IPAddress, Int32) (System.Net.Sockets)

Connect Method (IPAddress, Int32)

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This page is specific to

Microsoft Visual Studio 2008/.NET Framework 3.5

Other versions are also available for the following:

.NET Framework Class Library

TcpClient..::.Connect Method (IPAddress, Int32)

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

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

Syntax

Visual Basic (Declaration)

Public Sub Connect ( _
    address As IPAddress, _
    port As Integer _
)

Visual Basic (Usage)

Dim instance As TcpClient
Dim address As IPAddress
Dim port As Integer

instance.Connect(address, port)

public void Connect(
    IPAddress address,
    int port
)

Visual C++

public:
void Connect(
    IPAddress^ address, 
    int port
)

JScript

public function Connect(
    address : IPAddress, 
    port : int
)

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.

Exceptions

Exception	Condition
ArgumentNullException	The address parameter is nullNothingnullptra null reference (Nothing in Visual Basic).
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.

Remarks

Call this method to establish a synchronous remote host connection to the specified IPAddress and port number. The Connect method will block until it either connects or fails. After connecting with the remote host, use the GetStream method to obtain the underlying NetworkStream. Use this NetworkStream to send and receive data.

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 MSDN for a detailed description of the error.

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

Examples

The following code example uses an IP Address and port number to connect with a remote host.

Visual Basic

'Uses the IP address and port number to establish a socket connection.
Dim tcpClient As New TcpClient
Dim ipAddress As IPAddress = Dns.GetHostEntry("www.contoso.com").AddressList(0)
tcpClient.Connect(ipAddress, 11003)

//Uses the IP address and port number to establish a socket connection.
TcpClient tcpClient = new TcpClient ();
IPAddress ipAddress = Dns.GetHostEntry ("www.contoso.com").AddressList[0];

tcpClient.Connect (ipAddress, 11003);

Visual C++

//Uses the IP address and port number to establish a socket connection.
TcpClient^ tcpClient = gcnew TcpClient;
IPAddress^ ipAddress = Dns::Resolve( "www.contoso.com" )->AddressList[ 0 ];
tcpClient->Connect( ipAddress, 11003 );

Platforms

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC

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

Version Information

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0

Reference

TcpClient Class

TcpClient Members

Connect Overload

System.Net.Sockets Namespace

GetStream