some improvement

[qicosmos]

related with #164

[github-actions]

Code Coverage Report
for detail, goto summary download Artifacts

Filename                    Functions  Missed Functions  Executed       Lines      Missed Lines     Cover    Branches   Missed Branches     Cover
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
client_util.hpp                     4                 0   100.00%          25                 4    84.00%           4                 2    50.00%
codec.h                             4                 0   100.00%          24                 0   100.00%           0                 0         -
connection.h                       40                 4    90.00%         380                93    75.53%          72                37    48.61%
io_service_pool.h                   5                 0   100.00%          32                 1    96.88%          12                 1    91.67%
md5.hpp                            19                 2    89.47%         127                 8    93.70%          24                 0   100.00%
router.h                           19                 1    94.74%         152                26    82.89%           8                 2    75.00%
rpc_client.hpp                     75                 6    92.00%         687               119    82.68%         138                55    60.14%
rpc_server.h                       28                 3    89.29%         205                20    90.24%          44                10    77.27%
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
TOTAL                             194                16    91.75%        1632               271    83.39%         302               107    64.57%

[github-actions]

Code Coverage Report
for detail, goto summary download Artifacts

Filename                    Functions  Missed Functions  Executed       Lines      Missed Lines     Cover    Branches   Missed Branches     Cover
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
client_util.hpp                     4                 0   100.00%          25                 4    84.00%           4                 2    50.00%
codec.h                             4                 0   100.00%          24                 0   100.00%           0                 0         -
connection.h                       40                 4    90.00%         380                93    75.53%          72                37    48.61%
io_service_pool.h                   5                 0   100.00%          32                 1    96.88%          12                 1    91.67%
md5.hpp                            19                 2    89.47%         127                 8    93.70%          24                 0   100.00%
router.h                           19                 1    94.74%         152                26    82.89%           8                 2    75.00%
rpc_client.hpp                     75                 6    92.00%         687               119    82.68%         138                55    60.14%
rpc_server.h                       28                 3    89.29%         205                20    90.24%          44                10    77.27%
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
TOTAL                             194                16    91.75%        1632               271    83.39%         302               107    64.57%