473,320 Members | 1,713 Online
Bytes | Software Development & Data Engineering Community
Post Job

Home Posts Topics Members FAQ

Join Bytes to post your question to a community of 473,320 software developers and data experts.

Socket question - remote close or empty message?

From MSDN dox:

WinSock select():
For connection-oriented sockets, readability can also indicate that a
request to close the socket has been received from the peer. If the
virtual circuit was closed gracefully, and all data was received, then a
recv will return immediately with zero bytes read.

..NET Socket.Select():
Readability can also indicate whether the remote Socket has shut down
the connection; in that case a call to Receive will return immediately,
with zero bytes returned.

Now for the question:
It's possible to send an empty message (socket.Send(new byte[]{}).
How on earth would a receving socket distinguish between this and a
remote shutdown?

/Per
Jul 21 '05 #1
0 1193

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

3
by: Robert A. van Ginkel | last post by:
In news:OZ0W9RsdDHA.2432@TK2MSFTNGP10.phx.gbl... I ask the question how I can see if all the data is on the other side of the connection. I got as answer that I should use the blocking property. I...
0
by: Per Bergland | last post by:
From MSDN dox: WinSock select(): For connection-oriented sockets, readability can also indicate that a request to close the socket has been received from the peer. If the virtual circuit was...
10
by: Hendrik van Rooyen | last post by:
While doing a netstring implementation I noticed that if you build a record up using socket's recv(1), then when you close the remote end down, the recv(1) hangs, despite having a short time out...
2
by: manasap | last post by:
Hi all! I've written a server and a client application using asynchronous sockets.The client sends data packets for every 7 seconds.The server receives the packets. This process proceeds...
0
by: ryjfgjl | last post by:
ExcelToDatabase: batch import excel into database automatically...
0
isladogs
by: isladogs | last post by:
The next Access Europe meeting will be on Wednesday 6 Mar 2024 starting at 18:00 UK time (6PM UTC) and finishing at about 19:15 (7.15PM). In this month's session, we are pleased to welcome back...
1
isladogs
by: isladogs | last post by:
The next Access Europe meeting will be on Wednesday 6 Mar 2024 starting at 18:00 UK time (6PM UTC) and finishing at about 19:15 (7.15PM). In this month's session, we are pleased to welcome back...
0
by: Vimpel783 | last post by:
Hello! Guys, I found this code on the Internet, but I need to modify it a little. It works well, the problem is this: Data is sent from only one cell, in this case B5, but it is necessary that data...
0
by: jfyes | last post by:
As a hardware engineer, after seeing that CEIWEI recently released a new tool for Modbus RTU Over TCP/UDP filtering and monitoring, I actively went to its official website to take a look. It turned...
1
by: PapaRatzi | last post by:
Hello, I am teaching myself MS Access forms design and Visual Basic. I've created a table to capture a list of Top 30 singles and forms to capture new entries. The final step is a form (unbound)...
1
by: Defcon1945 | last post by:
I'm trying to learn Python using Pycharm but import shutil doesn't work
1
by: Shællîpôpï 09 | last post by:
If u are using a keypad phone, how do u turn on JavaScript, to access features like WhatsApp, Facebook, Instagram....
0
isladogs
by: isladogs | last post by:
The next Access Europe User Group meeting will be on Wednesday 3 Apr 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome former...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.