code: func (this *FCGIClient) Post(p map[string]string, bodyType string, body io.Reader, l int) (resp *http.Response, err error) {
  
  	if len(p["REQUEST_METHOD"]) == 0 || p["REQUEST_METHOD"] == "GET" {
  		p["REQUEST_METHOD"] = "POST"
  	}
  	p["CONTENT_LENGTH"] = strconv.Itoa(l)
  	if len(bodyType) > 0 {
  		p["CONTENT_TYPE"] = bodyType
  	} else {
  		p["CONTENT_TYPE"] = "application/x-www-form-urlencoded"
  	}
  
  	return this.Request(p, body)
  }
docs: // Get issues a Post request to the fcgi responder. with request body
  // in the format that bodyType specified