Implement client default_encoding

[cnpryer]

No description provided.

[github-actions]

Benchmark Results

Commit: 077e960

get  (n=5000)
  package      mean   median    stdev      min      max  (ms)    ratio
  --------------------------------------------------------------------
  httprs      0.277    0.272    0.029    0.237    0.585
  httpx       0.788    0.821    0.131    0.659    8.263    2.84x slower
  requests    0.849    0.829    0.057    0.758    1.159    3.06x slower

post_bytes  (n=5000)
  package      mean   median    stdev      min      max  (ms)    ratio
  --------------------------------------------------------------------
  httprs      0.401    0.410    0.036    0.324    0.580
  httpx       0.892    0.889    0.086    0.732    1.268    2.22x slower
  requests    1.006    0.955    0.094    0.878    2.032    2.51x slower

post_json  (n=5000)
  package      mean   median    stdev      min      max  (ms)    ratio
  --------------------------------------------------------------------
  httprs      0.807    0.800    0.045    0.744    1.223
  httpx       1.212    1.245    0.091    1.038    1.708    1.50x slower
  requests    1.255    1.191    0.107    1.119    1.686    1.56x slower

post_form  (n=5000)
  package      mean   median    stdev      min      max  (ms)    ratio
  --------------------------------------------------------------------
  httprs      0.335    0.331    0.021    0.299    0.718
  httpx       1.022    1.045    0.084    0.868    1.388    3.05x slower
  requests    1.109    1.082    0.078    0.972    3.679    3.31x slower

[github-actions]

Ecosystem Tests

Commit: 077e960

repo	baseline package	baseline passed	compat passed	accepted regressions	remaining real regressions	total score
openai/openai-python	httpx	559	462	96 (17.2%)	1 (0.2%)	558/559 (99.8%)
anthropics/anthropic-sdk-python	httpx	583	484	89 (15.3%)	10 (1.7%)	573/583 (98.3%)
python-telegram-bot/python-telegram-bot	httpx	94	94	0 (0.0%)	0 (0.0%)	94/94 (100.0%)