Response.TransmitFile fail in the middle for modem user?

[Oct]

I have implemented an ISAPI filter to authenticate user download based on SQL
data. It works great for all high speed users but it fail after 20-30 mins
download on modem (yes, 56k!) user. The error message on the client side is
"The connection with the server has been reset".

I have tried increasing Server.ScriptTimeout to 2 hours also Session timeout
to very long. I've set this on both the site property and explicitly run
time. It doesn't change a thing.

Here is some code

<httpHandlers>
<add verb="*" path="*.exe" type="MyHandler.NewHandler,httpHandler"/>
</httpHandlers>

Here is the code to send file to user

string strFileName =
context.Request.MapPath(context.Request.ServerVari ables["PATH_INFO"]);
FileInfo myFile = new FileInfo(strFileName);
objResponse.AddHeader("Content-Disposition","attachment; filename=" +
myFile.Name);
objResponse.ContentType = "application/octet-stream";
objResponse.TransmitFile(myFile.Name);
objResponse.End();

BTW, I have tried Response.BinaryWrite. It doesn't experience this problem
but it seems to have quite worse performance than Response.TransmitFile.

[Oct]

"Oct@ESI" wrote:

I have implemented an ISAPI filter to authenticate user download based on SQL
data. It works great for all high speed users but it fail after 20-30 mins
download on modem (yes, 56k!) user. The error message on the client side is
"The connection with the server has been reset".

I have tried increasing Server.ScriptTimeout to 2 hours also Session timeout
to very long. I've set this on both the site property and explicitly run
time. It doesn't change a thing.

Here is some code

<httpHandlers>
<add verb="*" path="*.exe" type="MyHandler.NewHandler,httpHandler"/>
</httpHandlers>

Here is the code to send file to user

string strFileName =
context.Request.MapPath(context.Request.ServerVari ables["PATH_INFO"]);
FileInfo myFile = new FileInfo(strFileName);
objResponse.AddHeader("Content-Disposition","attachment; filename=" +
myFile.Name);
objResponse.ContentType = "application/octet-stream";
objResponse.TransmitFile(myFile.Name);
objResponse.End();

BTW, I have tried Response.BinaryWrite. It doesn't experience this problem
but it seems to have quite worse performance than Response.TransmitFile.