🚀 go-pugleaf

"Dennis Cote" <denniscote@gmail.com> wrote in message 
news:47e28ff7$1@newsgroups.borland.com...

> is there a way to get Indy 10 to read directly into the existing char 
> buffer?

Indy does not support direct memory buffers anymore, by design.  One thing 
you can do, though, is derive a new class from TCustomMemoryStream that uses 
the char* buffer as its underlying memory block.  You could then use 
ReadStream() to receive the data directly into the buffer.  For example:

    class TBufferStream : public TCustomMemoryStream
    {
    public:
        __fastcall TBufferStream(void *Buffer, int Length)
            : TCustomMemoryStream()
        {
            SetPointer(Buffer, Length);
        }

        int __fastcall Write(void *Buffer, int Count)
        {
            Count = min(Count, Size-Position);
            if( Count > 0 )
            {
                memcpy(((LPBYTE)Memory) + Position, Buffer, Count);
                Seek(Count, soFromCurrent);
                return Count;
            }
            return 0;
        }
    };


    char* Buffer;
    int Length;
    ...
    TBufferStream *strm = new TBufferStream(Buffer, Length);
    IOHandler->ReadStream(strm, Length);
    delete strm;


Gambit 

What you can also probably do, as I did using indy 9
(sorry I do not use indy 10 yet) is get the socket handle
similar to this...
int isocket = AThread->Connection->Socket->Binding->Handle;
and do this....
unsigned char * s = new unsigned char [8200];
int r = recv(isocket, s, 8192, 0);
if r == 0 then do this.....
AThread->Connection->Disconnect();
and terminate else if
r == -1
this is an error so go look up WSAGetLastError();
and if r > 0 then you got data in s and r is the
length!





Dennis Cote wrote:
> I am porting an application from Indy 9 to Indy 10.
> 
> In Indy 9 I had code to read data into a dynamically allocated char 
> buffer using ReadBuffer.
> 
>     char* Buffer;
>     int Length;
> 
>     ...
>     ReadBuffer(Buffer, Length);
>     ...
> 
> I have found that I need to do the following instead in Indy 10.
> 
>     char* Buffer;
>     int Length;
> 
>     ...
>     TIdBytes byteBuf;
>     byteBuf.Length = Length;
>     IOHandler->ReadBytes(byteBuf, Length);
>     BytesToRaw(byteBuf, Buffer, Length);
>     ...
> 
> My question is, is there a way to get Indy 10 to read directly into the 
> existing char buffer? I would like to avoid the extra allocations and 
> the buffer copy if possible.
> 
> TIA
> Dennis Cote

"Colin B Maharaj" <noreply@myhost.com> wrote in message 
news:47e5a1fb$1@newsgroups.borland.com...

> What you can also probably do, as I did using indy 9
> (sorry I do not use indy 10 yet) is get the socket handle
> similar to this...

You shouldn't be doing that.  That completely bypasses Indy's ability to 
manage and track the socket state.


Gambit