ThingMagic Mercury API v1.23.0 - Manual (Page 106)

Custom Serial Transport Naming
106 Advanced Customization

Call the factory function with the already-parsed URI (e.g., Reader rdr =
CreateSerialReader(uri))
For new functions, the user needs to modify the code in two places:
 Create one new file to implement the serial transport. (We already have files
encapsulating the implementations of SerialReader and LlrpReader.)

Initialize the dispatch table in your application code before calling Reader.Create().
Note
Currently Mercury API supports the addition of custom transport schemes
only for serial readers. The user will not be able to use this scheme addition
for LLRP readers. TMR_setSerialReader() will pop up an “UNSUPPORTED”
message if it is attempted.
Note
Thingmagic universal Reader (“tmr”) scheme does not support user-
generated transport schemes, including the tcp example we provide in the
API SDK.