Client applications can transfer three types of bulk data to Open Server applications: bulk copy data, text data, and image data. The SRV_T_BULKTYPE property is used to set or retrieve the type of bulk data transfer being initiated by a client.
Table 2-29 describes the legal values for the SRV_T_BULKTYPE thread property:
Value  | 
Meaning  | 
|---|---|
SRV_BULKLOAD  | 
The client is preparing to transfer bulk copy data.  | 
SRV_TEXTLOAD  | 
The client is preparing to transfer text data.  | 
SRV_IMAGELOAD  | 
The client is preparing to transfer image data.  | 
SRV_UNITEXTLOAD  | 
The client is preparing to transfer unitext data.  | 
Open Server cannot determine automatically the type of bulk data stream a client sends. The Open Server application must obtain this information and give it to Open Server in advance of the actual SRV_BULK event, using the srv_thread_props routine. The application then retrieves the data inside the SRV_BULK event handler once the actual bulk request has been made.
See the Open Client and Open Server Common Libraries Reference Manual. See “Text and image”.