AsiaInfo package cmpp1.21 the api package, dll core without source code, header files only reference the reference value package. Cmpp actually have a 3, this is old stuff.

yx_cmppapi
..........\API
..........\...\cmpp121api
..........\...\..........\doc
..........\...\..........\...\apiguide121.pdf
..........\...\..........\FreeBSD-3.2
..........\...\..........\...........\cmpp12api.tar.gz
..........\...\..........\FreeBSD-4.2
..........\...\..........\...........\cmpp12api.tar.gz
..........\...\..........\java
..........\...\..........\....\jcmpp12api.tar.gz
..........\cmpp121api
..........\..........\bin
..........\..........\...\a.arg
..........\..........\...\CMPPAPI.dll
..........\..........\...\cmppconf.exe
..........\..........\...\gethostid.exe
..........\..........\...\msgid.txt
..........\..........\...\phoneno.txt
..........\..........\...\query.txt
..........\..........\...\QueryISMG.exe
..........\..........\...\readme.txt
..........\..........\...\RecvSM.exe
..........\..........\...\SendSM.exe
..........\..........\...\SetKey.exe
..........\..........\...\sm.par
..........\..........\...\sm1.txt
..........\..........\...\TestAPI.exe
..........\..........\...\TestAPI.SUP
..........\..........\...\vssver.scc
..........\..........\config
..........\..........\......\cmppc.ini
..........\..........\......\readme.txt
..........\..........\......\vssver.scc
..........\..........\include
..........\..........\.......\CMPPAPI.h
..........\..........\.......\CMPPAPI.hpp
..........\..........\.......\readme.txt
..........\..........\.......\vssver.scc
..........\..........\lib
..........\..........\...\CMPPAPI.exp
..........\..........\...\CMPPAPI.lib
..........\..........\...\readme.txt
..........\..........\...\vssver.scc
..........\..........\sample
..........\..........\......\QueryISMG
..........\..........\......\.........\Makefile
..........\..........\......\.........\mssccprj.scc
..........\..........\......\.........\QueryISMG.cpp
..........\..........\......\.........\QueryISMG.dsp
..........\..........\......\.........\QueryISMG.dsw
..........\..........\......\.........\QueryISMG.ncb
..........\..........\......\.........\QueryISMG.opt
..........\..........\......\.........\QueryISMG.plg
..........\..........\......\.........\readme.txt
..........\..........\......\.........\vssver.scc
..........\..........\......\readme.txt
..........\..........\......\RecvSM
..........\..........\......\......\Makefile
..........\..........\......\......\mssccprj.scc
..........\..........\......\......\readme.txt
..........\..........\......\......\RecvSM.cpp
..........\..........\......\......\RecvSM.dsp
..........\..........\......\......\RecvSM.dsw
..........\..........\......\......\RecvSM.ncb
..........\..........\......\......\RecvSM.opt
..........\..........\......\......\RecvSM.plg
..........\..........\......\......\vssver.scc
..........\..........\......\SendSM
..........\..........\......\......\Makefile
..........\..........\......\......\mssccprj.scc
..........\..........\......\......\readme.txt
..........\..........\......\......\SendSM.cpp
..........\..........\......\......\SendSM.dsp
..........\..........\......\......\SendSM.dsw
..........\..........\......\......\SendSM.ncb
..........\..........\......\......\SendSM.opt
..........\..........\......\......\SendSM.plg
..........\..........\......\......\vssver.scc
..........\..........\vssver.scc

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