modify default_handler_from base => pre protocol

[rhoninl]

What this PR does / why we need it:
modify default_handler_from base => pre protocol
Will this PR make the community happier?
Yes
Which issue this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close that issue when PR gets merged): fixes #

Special notes for your reviewer:

Release note:

[codecov]

Codecov Report

Merging #248 (4bdb201) into main (abd2141) will increase coverage by 0.74%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #248      +/-   ##
==========================================
+ Coverage   21.85%   22.60%   +0.74%     
==========================================
  Files           8        8              
  Lines         828      836       +8     
==========================================
+ Hits          181      189       +8     
  Misses        628      628              
  Partials       19       19              

Impacted Files	Coverage Δ
pkg/deviceshifu/deviceshifuhttp/deviceshifuhttp.go	16.16% <100.00%> (+0.63%)	⬆️
pkg/deviceshifu/deviceshifumqtt/deviceshifumqtt.go	28.57% <100.00%> (+1.03%)	⬆️
...g/deviceshifu/deviceshifuopcua/deviceshifuopcua.go	11.39% <100.00%> (+0.92%)	⬆️
...deviceshifu/deviceshifusocket/deviceshifusocket.go	27.89% <100.00%> (+0.99%)	⬆️

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[tomqin93]

LGTM