About TIdTCPClient receive buffer...

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5 total messages Started by Umberto Spagnoli Thu, 01 Mar 2007 15:01

#1207

Author: Umberto Spagnoli
Date: Thu, 01 Mar 2007 15:01

7 lines
1100 bytes

I'm using Indy components provided with BDS 2006 (v. 9.0.50)

How can I know how many bytes I currently received in the input buffer of my 
TIdTCPClient component without reading the buffer?

Thanks in advance for your replies
Umberto

Re: About TIdTCPClient receive buffer...

#1208

Author: Remy Lebeau (TeamB)
Date: Thu, 01 Mar 2007 16:05

18 lines
1483 bytes

"Umberto Spagnoli" <jumby@tiscali.it> wrote in message
news:45e6eac2$1@newsgroups.borland.com...

> How can I know how many bytes I currently received in the
> input buffer of my TIdTCPClient component without reading
> the buffer?

TIdTCPClient derives from TIdTCPConnection, which has an InputBuffer
property, which in turn has a Size property.

Note that data is not put into the InputBuffer until you call one of
TIdTCPConnection's reading methods first.  If you want to know how
many bytes are pending in the socket's internal receive buffer, then
you have to use the ioctlsocket() API function directly for that.


Gambit

Re: About TIdTCPClient receive buffer...

#1209

Author: Umberto Spagnoli
Date: Thu, 01 Mar 2007 18:13

14 lines
1243 bytes

Please, could you post a sample code using ioctlsocket() API function ?
I was not able to  find any example....

Thanks in advance


>  If you want to know how
> many bytes are pending in the socket's internal receive buffer, then
> you have to use the ioctlsocket() API function directly for that.
>
>
> Gambit
>
>

Re: About TIdTCPClient receive buffer...

#1211

Author: Remy Lebeau (TeamB)
Date: Thu, 01 Mar 2007 20:09

27 lines
1688 bytes

"Umberto Spagnoli" <jumby@tiscali.it> wrote in message
news:45e717b9$1@newsgroups.borland.com...

> Please, could you post a sample code using ioctlsocket() API
function ?

    u_long bytes = 0;
    if( ioctlsocket((SOCKET)IdTCPClient1->Socket->Binding->Handle,
FIONREAD, &bytes) == 0 )
    {
        // bytes specified the number of unread bytes in the socket's
internal buffer...
    }

Typically, you should need to use the socket API directly when using
Indy, though.  An alternative approach is to simply call the
connection's ReadFromStack() method to read all pending data into
Indy's InputBuffer, ie:

    if( IdTCPClient1->ReadFromStack(true, 0, false) > 0 )
    {
        // pending data was read ...
    }


Gambit

Re: About TIdTCPClient receive buffer...

#1210

Author: Umberto Spagnoli
Date: Thu, 01 Mar 2007 20:20

4 lines
1036 bytes

Great!

Thank you very much for your help
Umberto

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