I have this ASP application that delivers binary files (by calling C++ COM
object) to a C++ client application. On the server side I read from a file
and write it using Response.Binary Write function. On the client side I read
using the MFC CHttpFile::Read () function.
This code has been working for 5 years on Win2000/IIS5. Recently we moved
the ASP application as is into Windows 2003/IIS6. Since then we are seeing
that some large size files are delivered incomplete. There is no error on
both side. I have run the server side C++ COM object via debugger and found
no error, it writes the entire 5MB file without error. I have also run the
client side C++ application via debugger, and it receives 1.6MB and then
terminates without any error.
Whatever happened to rest of the file? I can reproduce this error everytime
for a given file. However, this doesn't happen for most of the files.
Please shed some light here...
4  2682 
Do you have URLScan configured on your server? I think this can limit the
download size of files.
Paul
"Samurai" wrote: I have this ASP application that delivers binary files (by calling C++ COM
object) to a C++ client application. On the server side I read from a file
and write it using Response.Binary Write function. On the client side I read
using the MFC CHttpFile::Read () function.
This code has been working for 5 years on Win2000/IIS5. Recently we moved
the ASP application as is into Windows 2003/IIS6. Since then we are seeing
that some large size files are delivered incomplete. There is no error on
both side. I have run the server side C++ COM object via debugger and found
no error, it writes the entire 5MB file without error. I have also run the
client side C++ application via debugger, and it receives 1.6MB and then
terminates without any error.
Whatever happened to rest of the file? I can reproduce this error everytime
for a given file. However, this doesn't happen for most of the files.
Please shed some light here...
Urlscan, not on Win2003. The old Win2000 had it, but that never caused any
problem.
"Paul" <Pa**@discussio ns.microsoft.co m> wrote in message
news:93******** *************** ***********@mic rosoft.com... Do you have URLScan configured on your server? I think this can limit the
download size of files.
Paul
"Samurai" wrote:
I have this ASP application that delivers binary files (by calling C++
COM
object) to a C++ client application. On the server side I read from a
file
and write it using Response.Binary Write function. On the client side I
read
using the MFC CHttpFile::Read () function.
This code has been working for 5 years on Win2000/IIS5. Recently we moved
the ASP application as is into Windows 2003/IIS6. Since then we are
seeing
that some large size files are delivered incomplete. There is no error on
both side. I have run the server side C++ COM object via debugger and
found
no error, it writes the entire 5MB file without error. I have also run
the
client side C++ application via debugger, and it receives 1.6MB and then
terminates without any error.
Whatever happened to rest of the file? I can reproduce this error
everytime
for a given file. However, this doesn't happen for most of the files.
Please shed some light here...
Do you have ASP Response buffering enabled. I believe it is on by default.
And on IIS6, the default maximum ASP buffered response is 4MB. Configurable.
W3SVC/AspBufferingLim it
This limit is introduced for security reasons -- on IIS5, it is possible to
run a rogue ASP page in an infinite loop doing a Response.Write( ) with
buffering enabled to consume all system memory.
--
//David
IIS http://blogs.msdn.com/David.Wang
This posting is provided "AS IS" with no warranties, and confers no rights.
//
"Samurai" <sa*****@newsgr oup.nospam> wrote in message
news:%2******** ********@TK2MSF TNGP03.phx.gbl. .. Urlscan, not on Win2003. The old Win2000 had it, but that never caused any
problem.
"Paul" <Pa**@discussio ns.microsoft.co m> wrote in message
news:93******** *************** ***********@mic rosoft.com... Do you have URLScan configured on your server? I think this can limit the
download size of files.
Paul
"Samurai" wrote:
I have this ASP application that delivers binary files (by calling C++
COM
object) to a C++ client application. On the server side I read from a
file
and write it using Response.Binary Write function. On the client side I
read
using the MFC CHttpFile::Read () function.
This code has been working for 5 years on Win2000/IIS5. Recently we
moved
the ASP application as is into Windows 2003/IIS6. Since then we are
seeing
that some large size files are delivered incomplete. There is no error
on
both side. I have run the server side C++ COM object via debugger and
found
no error, it writes the entire 5MB file without error. I have also run
the
client side C++ application via debugger, and it receives 1.6MB and then
terminates without any error.
Whatever happened to rest of the file? I can reproduce this error
everytime
for a given file. However, this doesn't happen for most of the files.
Please shed some light here...
You probably have a high tech network card sitting in that new server, try
swapping it for a 10 dollar one and see what happens. (I have seen this
exact behaviour before)
"Samurai" <sa*****@newsgr oup.nospam> schreef in bericht
news:uc******** ******@TK2MSFTN GP05.phx.gbl... I have this ASP application that delivers binary files (by calling C++ COM
object) to a C++ client application. On the server side I read from a file
and write it using Response.Binary Write function. On the client side I read
using the MFC CHttpFile::Read () function.
This code has been working for 5 years on Win2000/IIS5. Recently we moved
the ASP application as is into Windows 2003/IIS6. Since then we are seeing
that some large size files are delivered incomplete. There is no error on
both side. I have run the server side C++ COM object via debugger and
found no error, it writes the entire 5MB file without error. I have also
run the client side C++ application via debugger, and it receives 1.6MB
and then terminates without any error.
Whatever happened to rest of the file? I can reproduce this error
everytime for a given file. However, this doesn't happen for most of the
files.
Please shed some light here... This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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