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Content-type: text/plain
Dear Mar,
CommTCP is a driver for CommStreams. The CommStreams documentation contains
the following preconditions for WriteBytes:
PROCEDURE (s: Stream) WriteBytes (IN x: ARRAY OF BYTE; beg, len: INTEGER;
OUT written: INTEGER)NEW, ABSTRACT
Pre
beg >= 0 20
len > 0 21
LEN(x) >= beg + len 22
Thus, Trap 21 means "len <= 0".
Regards,
Thomas,
Oberon microsystems, Inc.
-----Original Message-----
From: Mar NDIAYE [mailto:mar.ndiaye{([at]})nowhere.xy
Sent: Freitag, 21. November 2003 16:53
To: Blackbox Mailing-List
Subject: ctApplicationOctetStream
Hello every body,
I use the O3WebServices and I try to send to the user a response by
binary data. I wrote down in my program the fellowing instruction:
Response.ContentType := ctApplicationOctetStream;
and the type of Response.data is POINTER to ARRAY of BYTE
When I execute the program, I get a
Trap 21 ( precondition violated)
in the procedure CommTCP.Stream.WriteBytes
Thank you in advance ! Best regards.
Mar NDIAYE
----------------------------------------------------------------------------
--------
Mar NDIAYE
Laboratoire d'Analyse et de
Technologie du Langage
Université de Genève
2, rue de Candolle
CH-1211 Genève 4
Bureau : L 706
Tel : ++41 (0)22 /379 63 32
Natel: ++41 (0) 078/ 8 55 06 20
http://www.latl.unige.ch
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Received on Sat Nov 22 2003 - 10:00:13 UTC