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sander · Guest

The purpose of this code is to get data from ISAPI ddl 2 into ISAPI dll
1. Both ISAPI dll's are written by me. In ISAPI dll 1 I use a IdHTTP
client to make a Get() request to ISAPI dll 2. Four request are made at
the same time (multi-threaded). If ISAPI dll 2 is not active and
therefore needs to be launghed by IIS, it misses the first request.
IdHTTP generates a "Connection Closed Gracefully". The other three
request are processed correctly. If I look in the webserver's logfile all
four request are logged so they have been received by the server.

This is the client-code:

SS := TMemoryStream.Create;
URL := 'http://'+RDOBackdoorServername+RDOBackdoorScriptname+'/getpict?
pictname='+Pictname+'&ModuleName=KDI';
DM.IdHTTP1.Get(URL,SS);
Response.StatusCode := DM.IdHTTP1.ResponseCode;

Starting ISAPI dll 2 takes a few hundreds of a second (connection to
MySQL, logfiles are generated, etc).
I asume that IdHTTP is thread-safe. Every thread has it's own copy.
Putting down criticalsections solves the problem but I think it also
slows down the process.

Does anybody know why it goes wrong?

Alexander van Meerten
VMSD

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