py: Show POST request header and body.

server.py

import http.server

class handler(http.server.BaseHTTPRequestHandler):
    def do_POST(self):
        """ show request header """
        print()
        print('=== POST REQUEST HEADER ===')
        print(self.headers)

        content_length = self.headers.get("content-length")
        if content_length:
            print('=== POST REQUEST BODY ===')
            length = int(content_length)
            body = self.rfile.read(length)
            if length < 600:
                print(body)
            else:
                print(body[:300])
                print('  :')
                print(body[-300:])
        print('=== END ===')

        """ send response """
        self.send_response(200)
        self.send_header('Content-type', 'text/html; charset=utf-8')
        self.end_headers()


if __name__ == '__main__':
    httpd = http.server.HTTPServer(('0.0.0.0', 80), handler)
    httpd.serve_forever()