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Background documentationBuffered Connection Handles Locate this document in the navigation structure


To hide fragmentation of messages from the application, NI supports buffered connections, which provide the assembly of the fragments. In NI_MESG_IO and NI_ROUTE_IO the data block length is given, which is necessary for buffering the incoming data until the block is completed. NI_RAW_IO does not support buffering.

For an incoming data block, the data buffer is created after the first received packet (particularly after receiving the whole data block header; 4 bytes). To prevent running out of memory, a limit for the maximal message length can be set.

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Communication Modes