[Q] EndReceive Asynchron C# Socket

[Andre]

Hi,

I'm implementing an asynchron socket Receiving method and I have a
question about EndReceive.

Read()
{
Socket.BeginReceive(buf,0,buf.Length,0,new
AsyncCallback(ReadCallback),dp);
}

ReadCallback(IAsyncResult asyncRes)
{
...
int bytesRead = Socket.EndReceive(asyncRes);
...
}

My question is now, what happens if I try to receive a datapacket
which is greater than the buffer buf? EndReceive returns when when the
buffer buf is full. Can I call EndReceive again? or should I restart
Read()? But how can I know that there are datas waiting for reading?

Thanks
André Betz
http://www.andrebetz.de

 

[Ivar]

Hi,

EndReceive returns when when the buffer buf is full.

No, it may retrun less bytes than buffer, because of it ALWAYS see hwo much
int bytesRead = Socket.EndReceive recived.

Can I call EndReceive again? or should I restart

No, you must start from BeginRecieve again

Read()? But how can I know that there are datas waiting for reading?

You don't need to know that, BeginRecieve waits data to arrive.