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TcpClient::Connect Method (String, Int32)

Connects the client to the specified port on the specified host.

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

public:
void Connect(
	String^ hostname, 
	int port
)

Parameters

hostname
Type: System::String

The DNS name of the remote host to which you intend to connect.

port
Type: System::Int32

The port number of the remote host to which you intend to connect.

ExceptionCondition
ArgumentNullException

The hostname parameter is nullptr.

ArgumentOutOfRangeException

The port parameter 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.

Call this method to establish a synchronous remote host connection to the specified host name 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.

If IPv6 is enabled and the Connect(String, Int32) method is called to connect to a host that resolves to both IPv6 and IPv4 addresses, the connection to the IPv6 address will be attempted first before the IPv4 address. This may have the effect of delaying the time to establish the connection if the host is not listening on the IPv6 address.

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.

The following code example uses the host name and port number to connect with a remote host.

//Uses a host name and port number to establish a socket connection.
TcpClient^ tcpClient = gcnew TcpClient;
tcpClient->Connect( "www.contoso.com", 11002 );

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

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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