SWI-Prolog -- http_post/4

Documentation
- Reference manual
- Packages
  - SWI-Prolog HTTP support
    - The HTTP client libraries
      - library(http/http_client): HTTP client library
        
        http_get/3
        
        http_delete/3
        
        http_post/4
        
        http_put/4
        
        http_patch/4
        
        http_read_data/3
        
        http_convert_data/4
        
        http_disconnect/1
        
        post_data_hook/3

code. Without, codes other than 200 are interpreted as an error.

See also: Implemented on top of http_get/3.
To be done: Properly map the 201, 202 and 204 replies.