Asynchronous Sockets

[Andrew Ducker]

I have the following code, which throws an error of "An invalid argument
was supplied" when I run it.

Can anyone tell me the stupid mistake I'm obviously making?

Socket listener = new Socket(*snipped*);
listener.Bind(localEndPoint);
while (true)
{
AsyncCallback MyCallback = new AsyncCallback(ConnectionMade);
listener.BeginAccept(MyCallback,listener);
}

public void ConnectionMade( IAsyncResult ar)
{
MessageBox.Show("Got an attempt to connect!");
}

The error happens on the line BeginAccept.

Any suggestions?

Andy D

[Steven Cheng[MSFT]]

Hi Andrew,

Thank you for posting here. Regarding on the issue, we're
finding proper resource to assist you and we will update as soon as posible.

Regards,

Steven Cheng
Microsoft Online Support

Get Secure! www.microsoft.com/security(This posting is provided "AS IS",
with no warranties, and confers no rights.)

[Robert Jordan]

Andrew Ducker wrote:

I have the following code, which throws an error of "An invalid argument
was supplied" when I run it.

Can anyone tell me the stupid mistake I'm obviously making?

Socket listener = new Socket(*snipped*);
listener.Bind(localEndPoint);
while (true)
{
AsyncCallback MyCallback = new AsyncCallback(ConnectionMade);
listener.BeginAccept(MyCallback,listener);
}

public void ConnectionMade( IAsyncResult ar)
{
MessageBox.Show("Got an attempt to connect!");
}

The error happens on the line BeginAccept.

1. you don't call listener.Listen() before BeginAccept
2. you spin with the while(true){}-loop. BeginAccept is
asynchronous, so it doesn't block.

bye
Rob

[Andrew Ducker]

Robert Jordan <ro*****@gmx.net> wrote in
news:cl************@news.t-online.com:

Andrew Ducker wrote:

I have the following code, which throws an error of "An invalid
argument was supplied" when I run it.

Can anyone tell me the stupid mistake I'm obviously making?

Socket listener = new Socket(*snipped*);
listener.Bind(localEndPoint);
while (true)
{
AsyncCallback MyCallback = new
AsyncCallback(ConnectionMade);
listener.BeginAccept(MyCallback,listener);
}

public void ConnectionMade( IAsyncResult ar)
{
MessageBox.Show("Got an attempt to connect!");
}

The error happens on the line BeginAccept.

1. you don't call listener.Listen() before BeginAccept

Aaaah! Thank you! That did it.

I feel particularly stupid.

Andy D