obtains value of the coreprotocolpnames #http_content_charset parameter.if not set , defaults to iso-8859-1 . concode_field_sep PlaceHolder placeHolder concode_field_sep ProtocolVersion getVersion concode_elem_sep boolean useExpectContinue concode_elem_sep void setHttpElementCharset concode_elem_sep void setVersion concode_elem_sep String getUserAgent concode_elem_sep void setUserAgent concode_elem_sep void setUseExpectContinue concode_elem_sep String getHttpElementCharset concode_elem_sep void setContentCharset