Accurately determine whether the network is available

Source: Internet
Author: User
Tags readable socket
The connection attribute of the Socket class often cannot accurately determine whether the network is Connected. The following code can solve this problem.
/// <Summary>
/// Whether the connection is established
/// </Summary>
Public virtual bool Connected
// Check whether the socket status is readable
If (m_socket.Connected & m_socket.Poll (0, SelectMode. SelectRead ))
Byte [] aByte = new byte [1];
// The TCP/IP protocol cannot accurately determine whether the network is available.
// Try to read a character. The specified read character in the Peek parameter will not be removed from the buffer.
// If it is readable, the connection is available.
If (m_socket.Receive (aByte, 0, 1, SocketFlags. Peek )! = 0)
Return true;
Close ("Disconnected .");
Return false;
Catch (SocketException e)
OnException (e );
Return m_socket.Connected;

Related Article

E-Commerce Solutions

Leverage the same tools powering the Alibaba Ecosystem

Learn more >

Apsara Conference 2019

The Rise of Data Intelligence, September 25th - 27th, Hangzhou, China

Learn more >

Alibaba Cloud Free Trial

Learn and experience the power of Alibaba Cloud with a free trial worth $300-1200 USD

Learn more >

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: and provide relevant evidence. A staff member will contact you within 5 working days.